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Stimulation of Bud Production in Eucalyptus globulus by Paclobutrazol Application

Item type: Journal Article • Journal: South African Forestry Journal • Authors: S. Hetherington --- , K.M. Jones --- Department of Primary Industries New Town Research Laboratories, Australia T.B. Koen --- Department of Primary Industries New Town Research Laboratories, Australia

Trunk injection of paclobutrazol (Clipper) significantly increased the bud crop on 7-year-old Eucalyptus globulus (Labill.) seed orchard trees, within one year of application. This is the first reported stimulation of reproduction to occur, with eucalypts, in the season of application...

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Herbicide treatments applied to stems and stumps of bugweed, Solanum mauritianum

Item type: Journal Article • Journal: South African Forestry Journal • Authors: R.P. Denny --- Cedara Weeds Laboratory, South Africa J.M. Goodall --- Cedara Weeds Laboratory, South Africa

Herbicide treatments applied to stems and stumps are necessary for bugweed, Solanum mauritianum, Scop because it is not always possible to spray the aerial parts when the plants are at an ideal height. Triclopyr in diesel and 2,4-D:2,4-DP ready-to-use were...

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A Field Demonstration of the Effect on Streamflow of Clearing Invasive Pine and Wattle Trees from a Riparian Zone

Item type: Journal Article • Journal: South African Forestry Journal • Authors: P.J. Dye --- Division of Forest Science and Technology, A.G. Poulter --- Division of Forest Science and Technology,

Two portable weirs were used to quantify changes in streamflow following clearfelling of a dense stand of self-sown Pinus patula and Acacia mearnsii along a riparian zone on Kalmoesfontein, a SAPPI forest plantation south-east of Lydenburg, Eastern Transvaal. The weirs...

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The Effect of Site Preparation and Tending on the Growth of Pinus radiata in the Southern Cape: Five Year Results

Item type: Journal Article • Journal: South African Forestry Journal • Authors: Lee Cunningham --- ,

This paper details the latest results of site preparation and tending experiments in Pinus radiata on regenerated sites, on both Kruisfontein Plantation in the Southern Cape District of the Western Cape Forest Region and Blueliliesbush Plantation in the Tsitsikamma Forest...

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Growth patterns of Italian ryegrass cultivars established in different seasons

Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: D.C.W. Goodenough --- Department of Agriculture (Natal Region), C.I. Macdonald --- Department of Agriculture (Natal Region), A.R.J. Morrison --- Department of Agriculture (Natal Region),

A comparison is made between various Italian ryegrass cultivars established under irrigation on a well‐drained upland site during the traditional autumn months, with plantings of the same cultivars at other times of the year.

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The production potential of pure and mixed stands of Eragrostis curvula and Medicago sativa on the eastern transvaal highveld

Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: N.F.G. Rethman --- Department of Agriculture (Transvaal Region), C.C. De Witt --- Department of Agriculture (Transvaal Region),

Over a five year period pure stands of Medicago sativa and mixtures of M. sativa and Eragrostis curvula have done as well and better than E. curvula receiving 300 kg N/ha, and considerably better than treatments receiving 200 and 100...

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A study of variations in floristic composition of highveld in the eastern Transvaal

Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: D.L. Barnes --- Department of Agriculture (Transvaal Region), B.H. Beukes --- Department of Agriculture (Transvaal Region), G.D. Kotzé --- Department of Agriculture (Transvaal Region),

Floristic surveys of two 1500m line transects in veld provided data which indicated the nature of variations in veld composition, expressed in terms of species, palatability classes or weighted palatability classes. The transects were subjectively subdivided into units comprising relatively...

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The influence of nitrogen fertilization, spring burning and height of stubble on hay and seed production of eragrostis curvula ¹

Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: N.F.G. Rethman --- Department of Plant Production, B.H. Beukes --- Department of Agriculture & Water Supply,

This investigation, conducted over a three‐year period, emphasized the strong effect of nitrogen fertilization on both hay and seed production. The optimum level of nitrogen, for conditions on the Eastern Highveld being 100–150 kg N/ha applied in spring, followed by...

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The influence of level and distribution of nitrogenous fertilizer on the dry matter production of Eragrostis curvula

Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: N.F.G. Rethman --- Department of Agriculture and Water Supply, Republic of South Africa L.G. vanZy1 --- Department of Agriculture and Water Supply, Republic of South Africa B.H. Beukes --- Department of Agriculture and Water Supply, Republic of South Africa

212 kg N/ha was the most profitable level. With the probability of poor seasons (when 106–159 kg N/ha was more profitable), the optimum level of spring fertilization being in the region of 100 kg N and the improved distribution of...

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Die beheer van Amaranthus spp. en die invloed daarvan op Digitaria eriantha gedurende die vestigingsjaar

Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: C.S. Dannhauser --- Departement Landbou en Watervoorsiening, Republiek van Suid‐Afrika AnnelieS. deBeer --- Departement Landbou en Watervoorsiening, Republiek van Suid‐Afrika

The control of Amaranthus spp. and the influence thereof on Digitaria eriantha during the season of establishment. Chemical control of Amaranthus spp. in newly established Smuts finger grass (D. eriantha) was investigated. A mixture of 800 ml 2,4‐D Amine+1200 ml...

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A survey of grazed and ungrazed grassland in the south‐eastern Transvaal highveld 1. Palatability composition and grazing capacity

Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: D.L. Barnes --- Department of Agricultural Development (Transvaal Region), Republic of South Africa

The floristic composition of selected veld communities which by virtue of their location were ungrazed, but regularly burned, and which were judged to reflect potential floristic composition, was measured at 112 sites in the southeastern Transvaal highveld. At each site...

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Forage potential of Japanese radish (Raphanus sativus) as influenced by planting date and cultivar choice

Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: A. Verschoor --- Division of Grassland Science, Department of Plant Production, Republic of South Africa N.F.G. Rethman --- Division of Grassland Science, Department of Plant Production, Republic of South Africa

Japanese radish shows potential as a winter forage. If planted early (Dec/Jan.), high temperatures can damage seedlings. With late plantings (Mar./Apr.), the growing season can become a limiting factor. A study to establish the optimum planting date for warmer areas...

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Effects of animal activity on the absorption rate of soils in the southern Karoo, South Africa

Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: W.R.J. Dean --- FitzPatrick Institute, Republic of South Africa

The rates of absorption into various microsites in Karoo soils were compared. The absorption of water by hard, bare intershrub soils was significantly increased by the presence of emergence holes of adult cicadas (Homoptera: Cicadidae) and near nest‐mounds of the...

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Evidence of a germination inhibitor in senescent soybean pod walls

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J. Chapman --- , Republic of South Africa

Water based pod extracts of the pod wall material of four soybean cultivars were found to reduce the germination rate of mustard (Sinapis alba L.) seeds. Highly significant differences were also observed in this respect between the different pod extracts.

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Influence of temperature and daylength on the phenological development of annual Medicago species with particular reference to M. truncatula, cv. Jemalong

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.M. van Heerden --- Department of Agriculture,

In a glasshouse and two growth-room trials, carried out in conjunction with 12 serial plantings in pots in the open, it was found that the phenological development of Medicago truncatula, M. tornata, M. aculeata, M. polymorpha, M. scutellata and M...

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Physical properties of some highveld Vertisols

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: K. Snyman --- , M.V. Fey --- Department of Soil Science and Agrometeorology, A. Cass --- Department of Soil Science and Agrometeorology,

Surface (0–20 cm) soils were sampled at 100 m intervals along a 3 km transect through Vertisols derived from dolerite and Ecca group mudstone near Standerton, Transvaal. The two geologically correlated soil bodies, which historically appear to have formed the...

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The influence of lime and phosphorus on the growth of white clover on highly weathered Natal soils

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: N. Miles --- , P.E. Bartholomew --- , C.I. Macdonald --- ,

Results of field studies conducted on highly weathered Natal soils in which the performance of white clover (Trifolium repens cv. Regal ladino) was examined under a range of lime and P treatments applied in factorial combination, are presented. Despite adverse...

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Physical and clay mineralogical properties of some Natal and eastern Transvaal soils

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A. Cass --- , Australia M.A. Johnston --- Department of Agriculture and Water Supply,

Soils, collected from the south-eastern Transvaal, Natal north coast and the more arid areas of the Natal interior, were examined using physical, chemical and mineralogical methods. Most of the soils were associated with particular management problems such as poor internal...

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An evaluation of the problem of volunteer ryegrass in seed production

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J. van Staden --- UN/CSIR Plant Growth and Development Research Unit, Department of Botany, N.S. Hendry --- UN/CSIR Plant Growth and Development Research Unit, Department of Botany,

This investigation was conducted to establish the degree and means of eliminating unwanted volunteers of Lolium multiflorum from fields used for seed production of a cultivar of the same species. This information is necessary in order to make recommendations with...

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Quantitative criteria for distinguishing melanic from vertic soil horizons in the central Kruger National Park

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: S.W. Fraser --- Department of Geography, T.H. van Rooyen --- Department of Geography, E. Verster --- Department of Geography,

Criteria based on shrink-swell potential, viz. linear shrinkage and COLErod, were used to distinguish between melanic and vertic soil horizons of the Mooiplaas region in central Kruger National Park. For linear shrinkage the proposed boundary value separating melanic and vertic...

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Effect of planting date on the phenology, seed yield, and fatty acid composition of three sunflower (Helianthus annuus L.) cultivars

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: R.N. de Vos --- , J. Dreyer --- , J.D. Lea --- Department of Crop Science,

Four planting dates (early October to mid-January) were used to obtain a range of environmental conditions for growing three sunflower cultivars. The effect of planting date on phenological development was small compared to that of genotype though the hybrid S0404...

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Invloed van bemesting op die oliekonsentrasie oliekwaliteit van sonneblomsaad

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: H.L. Loubser --- Olie- en Proteïensadesentrum, Departement Landbou en Watervoorsiening, C.L. Grimbeek --- Olie- en Proteïensadesentrum, Departement Landbou en Watervoorsiening,

Influence of fertilization on the oil concentration and oil quality of sunflower seed. Fertilizer trials (N,P,K and lime) were conducted over two seasons at three localities. Results indicate that 150 kg N ha−1 fertilizer decreased the oil concentration of the...

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Invloed van bewerking en besproeiing op die verwering van gneis in die Augrabies-gebied

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.F. Eloff --- Departement van Landbou en Watervoorsiening, W. F.A. Kirsten --- Departement van Landbou en Watervoorsiening, B.L. Plath --- Departement van Landbou en Watervoorsiening,

Fisiese, chemiese en mineralogiese kriteria is gebruik om te bepaal of veranderinge in eienskappe van gronde op gneise, in die Augrabies-gebied, as gevolg van bewerking en besproeiing plaasgevind het. Bewerking en besproeiing van die halfverweerde gneise het die verweringsproses versnel...

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Evaluation of the effects of scorching caused by the directed application of a paraquat-containing herbicide mixture to the base of maize plants at various ages

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: P. E.L. Thomas --- ,

The effect of herbicides which scorched the lower leaves of maize was compared in three seasons. The first season was relatively dry whilst the other two were wetter seasons. A mixture of cyanazine + atrazine + paraquat + a wetting...

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'n Nuwe benadering tot die bepaling van hitte-eenhede vir sonneblom

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: H.L. Loubser --- ,

Die konvensionele metode vir die bepaling van hitte-eenhede is vergelyk met 'n nuwe benadering. Data uit sewe kultivarproewe insluitende daaglikse maksimum en minimum temperature is gebruik om die hitte-eenhedevereistes van drie kultivars te bepaal. Twee vergelykings is gebruik, een verteenwoordig...

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The influence of photoperiod and temperature on the pre-flowering phase length of eleven soybean cultivars in northern Natal

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J. Chapman --- Agricultural Research Station,

The effect of photoperiod and temperature on the pre-flowering phase length of 11 soybean cultivars was studied. Heat units (10 to 30°C) and night hours (sunset to sunrise) were used as measures of temperature and photoperiod respectively. Highly significant negative...

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Screening of candidate herbicides in field trials for chemical control of Chromolaena odorata

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: D.J. Erasmus --- , J. van Staden --- UN/CSIR Research Unit for Plant Growth and Development, Department of Botany,

A range of concentrations of a number of herbicides was tested in field trials, for the control of Chromolaena odorata (L.) R.M. King and H. Robinson. The results obtained show that triclopyr, 2,4,5-T and tebuthiuron were consistently the most effective,...

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Die effek van plantpopulasie op die saadopbrengs van sonneblomkultivars

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: H.L. Loubser --- , C.L. Grimbeek --- , L. A.S. Robertson --- , Beulah Bronkhorst --- , C. Serfontein --- , J.C. van der Sandt --- ,

'n Aantal sonneblombasters is vergelyk by drie plantpopulasies oor twee seisoene te Ermelo, Sandvet en Warmbad. Die doel was om die kompensasievermoë van kultivars te bepaal vir 'n swak stand. Onder laepotensiaal-toestande was die kultivar X plantpopulasie-interaksie nie beduidend nie,...

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Variations in floristic and palatability composition, yield of veld and of soil characteristics on a paddock scale

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: D.L. Barnes --- Department of Agriculture and Water Supply (Transvaal Region), Republic of South Africa G.D. Kotzé --- Department of Agriculture and Water Supply (Transvaal Region), Republic of South Africa B.H. Beukes --- Department of Agriculture and Water Supply (Transvaal Region), Republic of South Africa C. Kohlmeyer --- Department of Agriculture and Water Supply (Transvaal Region), Republic of South Africa

Five parallel 900-m line-transects were laid out 100 m apart in relatively homogeneous veld. Floristic composition, yields of dry matter, soil forms and series, effective depth, clay content of the top and subsoil, and the pH of the topsoil were...

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Sterile Lanterna camara: fact or theory

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.J. Spies --- Department of Agriculture and Water Supply, Republic of South Africa Henriette du Plessis --- Department of Agriculture and Water Supply, Republic of South Africa

Attempts are being made to legalize the sale of ‘sterile’ Lantana camara varieties in South Africa. Several so-called sterile varieties have been investigated cytogenetically. All these. plants proved to be triploids.(2n = 33). A mechanism exists through which an unexpectedly...

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Typifying late-season weather for maize yield prediction

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: B. St. E. Clemence --- , Republic of South Africa J.B. Mallett --- , Republic of South Africa

Long-term weather data were used to generate typical weather records. By substituting typical weather data for actual late-season weather data it was possible to compute yield predictions using the model CERES-Maize, and compare these with predictions based on full season...

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Invloed van bemesting op sonneblomme. I. Saadopbrengs

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: H.L. Loubser --- , Republiek van Suid-Afrika C.L. Grimbeek --- , Republiek van Suid-Afrika Beulah Bronkhorst --- , Republiek van Suid-Afrika

Bemestingsproewe is by drie lokaliteite oor vier seisoene uitgevoer deur 'n ongerepliseerde 43-gestrengelde faktoriaaluitleg te gebruik. Peile het gewissel van 0 tot 150 kg N ha−1, 0 tot 45 kg P ha−1, 0 tot 60 kg K ha−1 by twee...

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Changes in soil aggregate stability during simulated weather cycles

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M.B. Molope --- Geography Department,

The effects of wetting and drying, and freezing and thawing on the stability of aggregates produced by laboratory manipulation or field tillage were studied on two British soils. Changes in aggregate stability were assessed by turbidimetry, with some information from...

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Variasie in lipied- en proteïeninhoud van sonneblomsaad en oliekoekmele in Suid-Afrika

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: G.A. Smith --- Departement Veekunde, Republiek van Suid-Afrika J.P. Hayes --- Departement Pluimveekunde, Republiek van Suid-Afrika Naomi Smith --- Navorsingsinstituut vir Vee- en Suiwelkunde, Republiek van Suid-Afrika

Die variasie in die chemiese samestelling van sonneblom- saad, wat uit verskillende areas aan oliepersers gelewer is, en die invloed daarvan op die samestelling van die geproduseerde oliekoekmele is in die studie ondersoek. Die ontleding van die sade het 'n...

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Effect of a foliar application of paclobutrazol in autumn on the reproductive development of ‘Songold’ plum

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: O.J. Olivier --- Department of Horticultural Science, Republic of South Africa G. Jacobs --- Department of Horticultural Science, Republic of South Africa D.K. Strydom --- Department of Horticultural Science, Republic of South Africa

A foliar application of paclobutrazol (1- (4-chlorophenyl) −4,4-dimethyl-2- (1,2,4- triazol-1-yl) pentan-3-ol) at 250 or 500 mg dm−3 a.i. in autumn, or late winter applications of dinitro-o-cresol oil emulsion (DNOC) in water at 3% v/v, increased the percentage of ‘Songold’ plum...

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The importance of certain insects as pollinators of sunflower (Helianthus annuus L.)

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A.P. du Toit --- , Republic of South Africa

This study reports the effects of Apis mellifera L. (honeybees), Astylus atromaculatus Blanchard (spotted maize beetles), Heliothis armigera Hübner (American bollworm larvae) and Musca domestica L. (house flies) on seed set in commercial sunflower. The pollination efficiency of these insects...

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A simple method for supplementing long-term weather records in a maize-modelling exercise

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: B. S.E. Clemence --- , Republic of South Africa

Missing weather data is a very real problem when using daily-incrementing crop growth simulation models. This is especially true in the case of daily air temperature and solar radiation data. The aim of this study was to compare two simple...

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The effect of Oxalis latifolia competition in maize

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: P. E.L. Thomas --- Summer Grain Sub-centre, Republic of South Africa

The competitive effect of Oxalis latifolia H.B.K, (red garden sorrel) in maize has been investigated in the past four seasons at Cedara. The site chosen had a heavy O. latifolia infestation. In each of the four seasons initial weed control...

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Patrone van opkoms van sekere onkruide in veldtoestande

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A. E.J du Toit --- , Republiek van Suid-Afrika M.R. Le Court De Billot --- , Republiek van Suid-Afrika

Opkomspatrone van 24 onkruidspesies, wat algemeen in bewerkte lande in somerreënvalgebiede voorkom, is ondersoek. Saad van onkruidspesies is gedurende die vorige herfs in die veld versamel. Een duisend sade van elk van die onkruide is ewekansig gekies uit die versamelde...

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The effect of bendioxide and 2,4-DB on the early growth and leaf development of three soybean (Glycine max (L.) Merr.) cultivars and the control of morning glory (Ipomoea purpurea (L.) Roth.)

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: P.L. Greenfield --- Department of Agronomy, Republic of South Africa M.R. Lagesse --- Department of Agronomy, Republic of South Africa

Three soybean (Glycine max (L.) Merr.) cultivars (Edgar, Duiker and Komati) were grown in pots together with morning glory (Ipomoea purpurea (L.) Roth.). Plants were exposed to three levels of bendioxide (0, 0.96 and 1.44 kg a.i. ha−1) in combination...

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Diversity, abundance and behaviour of diurnal insects on flowering capitula of commercial sunflower in the Transvaal

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A.P. du Toit --- Apicultural Unit, Republic of South Africa E. Holm --- Department of Entomology, Republic of South Africa

Sunflower, Helianthus annuus L., is an insect-pollinated crop and the different insect taxa visiting the flowering head play a role of greater or lesser importance in cross-pollination. Species diversity, abundance and behaviour of insects visiting commercial sunflower during flowering are...

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Allelopathic effect of sweetpotato (Ipomoea batatas) cultivars on certain weed and vegetable species

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: C.F. Reinhardt --- Department of Plant Production, Republic of South Africa Ruth Meissner --- Department of Plant Production, Republic of South Africa P.C. Nel --- Department of Plant Production, Republic of South Africa

A glasshouse study was conducted to determine the allelopathic potential of sweetpotato (Ipomoea batatas (L.) Lam.) cultivars Bosbok, Brandal and Koedoe. Nine indicator plants, three weeds: yellow nutsedge (Cyperus esculentus L.), purple nutsedge (Cyperus rotundus L.) and common pigweed (Amaranthus...

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Influence of intensive irrigation and cultivation on selected soil properties: Arid southern Namibia

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: E. Verster --- Department of Geography, Republic of South Africa T.H. van Rooyen --- Department of Geography, Republic of South Africa

The effect of long-term (25 years) intensive irrigation on selected soil properties of the Hardap Irrigation Scheme was determined by comparing soil profiles in irrigated and adjacent non-irrigated areas. The major differences detected between five soil pairs were rubification of...

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Bepaling van optimale blom en plantdatums vir koring in die sentrale besproeiingsgebiede van die RSA met behulp van 'n groeimodel

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A. Singels --- Departement Landbouweerkunde, Republiek van Suid-Afrika

Optimale blom- en plantperiodes vir besproeiingskoring is bepaal vir 15 lokaliteite in die sentrale besproeiingsgebiede van die RSA deur gebruik te maak van historiese temperatuurdata en die PUTU koringgroeimodel. Die hoogste gemiddelde opbrengs is gesimuleer met blomperiodes wat oor die...

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Pistilloidy in common wheat resulting from a spontaneous mutation

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: G.F. Marais --- Department of Genetics and Institute for Biotechnology, South Africa B. Lombard --- , Republic of South Africa

A plant that produced more than one kernel in many of its florets was isolated from breeding material. The condition was found to be transmitted in monogenic fashion as a recessive character. Transmission of the mutation through the egg cells...

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Evidence that alachlor selectivity in sunflower is based on depth-protection

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J. Allemann --- Department of Plant Production and Soil Science, Republic of South Africa C.F. Reinhardt --- Department of Plant Production and Soil Science, Republic of South Africa

The relative importance of the underground shoot parts (hypocotyl) and roots of sunflower (Helianthus annuus L.) seedlings on the absorption of alachlor [a-chloro-2′,6′-diethyl- N-(methoxymethyl) acetanilide] was studied in a glasshouse experiment. A layer of activated charcoal divided the soil in...

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Soil fumigation for lettuce production

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: D.M. Holcroft --- Department of Horticultural Science, Republic of South Africa I.E. Smith --- Department of Horticultural Science, Republic of South Africa

A Clovelly soil in Tala Valley (Natal) was fumigated with different concentrations of dazomet (300, 400, 500 kg ha−1) (granular formulation), and metham sodium (500, 750, 1000 L ha−1) (liquid formulation). Half the treatments were covered with plastic sheets during...

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High availability of alachlor affects the roots and general growth of sunflower seedlings

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J. Allemann --- Department of Plant Production and Soil Science, Republic of South Africa C.F. Reinhardt --- Department of Plant Production and Soil Science, Republic of South Africa

The tolerance to alachlor [α-chloro-2′,6′?diethyl-N-(metoxy- methyl) acetanilide] of three sunflower (Helianthus annuus L.) cultivars was evaluated in an aqueous medium in a glass- house. Alachlor (0.79 - 6.32 mg L−1) caused significant reductions in the root and shoot growth of...

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Suppression of seed germination and early seedling growth by plantation harvest residues

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A.W. Schumann --- , Republic of South Africa K.M. Little --- , Republic of South Africa N.S. Eccles --- , Republic of South Africa

The role of forestry plantation residues (leaf and branch) in the suppression of establishment of four weed species (Conyza sumatrensis, Trifolium spp., Echinochloa utilis and Lactica sativa) was investigated. Of the three residue types used, Pinus patula residues were found...

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Some observations on rodent and antelope damage in commercial forest plantations

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: N.S. Eccles --- , Republic of South Africa K.M. Little --- , Republic of South Africa

The impact of various weeding and site-preparation treatments on Acacia mearnsii and Pinus patula damage by mammalian pests was assessed. Browsing by small antelope on Acacia mearnsii was significantly less in areas where harvesting residues had been retained rather than...

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Improved criteria for classifying hydric soils in South Africa

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: D.C. Kotze --- Department of Grassland Science, Republic of South Africa J.R. Klug --- Department of Grassland Science, Republic of South Africa J.C. Hughes --- Department of Agronomy, Republic of South Africa C.M. Breen --- , Republic of South Africa

There is an increasing awareness of the ecological and agricultural importance of hydric (wetland) soils. Because of the scarcity of information in South Africa, this study aimed to critically examine systems currently being applied to the hydric soils of South...

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Allelopathic effects of Chenopodium album L. and Chenopodium polyspermum L. on another weed and two crop species

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: C.F. Reinhardt --- Department of Plant Production and Soil Science, South Africa Ruth Meissner --- Department of Plant Production and Soil Science, South Africa L.J. van Wyk --- Department of Plant Production and Soil Science, South Africa

Chenopodium album L. and Chenopodium polyspermum L. are cosmopolitan weeds that often cause serious crop yield losses. Although it is well known that both species compete strongly with crops, nothing has been published on their relative allelopathic potentials. Experiments for...

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The effect of a diurnal period of supra-optimal temperature on the seed vigour of sunflower

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A.A. Nel --- , Republic of South Africa

The daily maximum temperature in the upper 20 mm of sandy soils is often higher than 45°C on cloudless days during November, December and January in the summer rainfall region of South Africa. At these supra-optimal temperatures, sunflower seedling vigour...

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The response of germinating sunflower seed to heat tolerance induction

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A.A. Nel --- , Republic of South Africa

Vigour of pre-emergent sunflower (Helianthus annuus L.) seedlings is reduced when daily peak soil temperatures exceed 44°C resulting in poor emergence. Seedlings of sorghum (Sorghum bicolor L. Moench) are known to acquire thermotolerance to temperatures of 45–50°C as a consequence...

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Die invloed van die voginhoud op die dopbaarheid van sonneblomsaad

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A.A. Nel --- , Republiek van Suid-Afrika H.L. Loubser --- , Republiek van Suid-Afrika P.S. Hammes --- Departement Plantproduksie en Grondkunde, Republiek van Suid Afrika

Die voginhoud van sonneblomsaad (Helianthus annuns L.) wat vir persing gebruik word, wissel tussen 5.5% (ongeveer die laagste inhoud waartoe saad natuurlik droog) en 10% (die hoogste toelaatbare inhoud vir berging). Die doel van die ondersoek was om vas te...

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Die sif van sonneblomsaad vir die verbetering van olie- en proteienherwinning

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A.A. Nel --- , Republiek van Suid-Afrika H.L. Loubser --- , Republiek van Suid-Afrika P.S. Hammes --- Departement Plantproduksie en Grondkunde, Republiek van Suid-Afrika

Voor die olie van sonneblomsaad (Helianthus annuus L.) uitgepers word, word dit ontdop om onder andere die kwaliteit van die oliekoek so hoog moontlik te kry. Dopbaarheid, of die gemak van ontdopping, het 'n positiewe verwantskap met saadgrootte. Aangesien saadmonsters...

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A comparison of head infection and blight development caused by Fusarium graminearum and Fusarium crookwellense in wheat

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: W. H.P. Boshoff --- Department of Plant Pathology, Republic of South Africa Z.A. Pretorius --- Department of Plant Pathology, Republic of South Africa W.J. Swart --- Department of Plant Pathology, Republic of South Africa

The objectives of this study were to compare the infection of wheat heads by Fusarium graminearum and F. crookwellense and to determine the effect of temperature on head blight development induced by these species. Scanning electron microscopy of spikes of...

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Influence of adjuvants on tetrapion efficacy for nassella tussock (Stipa trichotoma Nees) control and subsequent seedling establishment: a preliminary study

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: B.D. Viljoen --- , Republic of South Africa

Nassella tussock (Stipa trichotoma Nees) is a perennial grass weed that seeds prolifically, resulting in build-up of a large soil seed bank. Due to it's vigorous growth it has the potential to spread rapidly in disturbed environments and overgrazed areas...

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Bromus diandrus Roth. control with MON 37532 in spring wheat (Triticum aestivum L.). 2. Effect of relative weed density and time of spraying

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: G.A. Agenbag --- Department of Agronomy and Pastures, Republic of South Africa R. Crous --- , Republic of South Africa

Bromus diandrus Roth, is one of the most troublesome weeds in spring wheat crops of the western Cape wheat producing area of the Republic of South Africa and Australia. The selective control of this weed in wheat crops may, in...

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Application of Empirical Soil Loss Models in southern Africa: a review

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: H.J. Smith --- , Republic of South Africa

Empirical soil loss models are relatively simple and have been applied in many parts of the world. The application of the Soil Loss Estimation Model for Southern Africa (SLEMSA), the Universal Soil Loss Equation (USLE) and the Revised Universal Soil...

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The effect of plant population on the quality of sunflower seed for processing

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A.A. Nel --- , Republic of South Africa H.L. Loubser --- , Republic of South Africa P.S. Hammes --- Department of Plant Production and Soil Science, Republic of South Africa

Among other disadvantages, low hullability of sunflower seed results in oil cake with a high fibre and low protein content. Hullability is known to increase with increased seed size. Seed size generally decreases with an increase in plant density. The...

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Preliminary investigation on the potential of Clivia miniata Regel as a cut flower

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: P.J. Robbertse --- Department of Plant Production and Soil Science, Republic of South Africa C.B. Honiball --- Department of Plant Production and Soil Science, Republic of South Africa

Clivia miniata Regel is widely cultivated as a garden ornamental and a pot plant. It occurs in many attractive shades of orange, red, yellow and pink but little information exists regarding its use as a cut flower. The possibility of...

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The effect of environment and cultivar on sunflower seed. I. Yield, hullability and physical seed characteristics

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A.A. Nel --- , Republic of South Africa H.L. Loubser --- , Republic of South Africa P.S. Hammes --- Department of Plant Production and Soil Science, Republic of South Africa

The quality of South African sunflower oil cake varies and often has an unacceptably low protein and high crude fibre content. Poor hullability of the seed is generally regarded as the primary cause thereof. This study examines the contribution of...

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The effect of environment and cultivar on sunflower seed. II. Composition and processing quality

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A.A. Nel --- , Republic of South Africa H.L. Loubser --- , Republic of South Africa P.S. Hammes --- Department of Plant Production and Soil Science, Republic of South Africa

The processing quality of sunflower seed is determined by its oil yield, oil cake yield and oil cake composition. Quality of the oil cake is determined by its protein and crude fibre content. Seed composition is affected by both cultivar...

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The yield and processing quality of sunflower seed as affected by the amount and timing of nitrogen fertiliser

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A.A. Nel --- , Republic of South Africa H.L. Loubser --- , Republic of South Africa P.S. Hammes --- Department of Plant Production and Soil Science, Republic of South Africa

The response of sunflower (Helianthus annuus L.) seed yield and seed processing quality to the amount and timing of nitrogen were studied in a field trial. Nitrogen application rates were 20, 70 and 120 kg ha−1 with limestone ammonium nitrate...

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The effect of water stress during grain filling on the yield and processing quality of sunflower seed

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A.A. Nel --- , Republic of South Africa H.L. Loubser --- , Republic of South Africa P.S. Hammes --- Department of Plant Production and Soil Science, Republic of South Africa

The oil and protein contents of sunflower seed are affected by water stress. Hullability is a seed quality trait which affects the efficiency of oil extrusion and the quality of the oil cake produced from the seed. Apart from cultivars,...

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Effect of seeding date on the performance of grasses and broadleaf species evaluated for cover crop management in two wine grape regions of South Africa

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.C. Fourie --- , Republic of South Africa P. J.E. Louw --- , Republic of South Africa G.A. Agenbag --- Department of Agronomy, Republic of South Africa

A selection of species suitable for cover crop management in the different wine grape regions is required to enable more producers to apply this environment friendly practice in a sustainable manner as part of an integrated production strategy. The effect...

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Low temperature treatment advances flowering in Clivia miniata (Lindley) Regel

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: C.B. Honiball --- Department of Plant Production and Soil Science, P.J. Robbertse --- Department of Plant Production and Soil Science,

Clivia miniata plants were exposed to a cold treatment of 7.5–10 °C for 14 days in the dark from 24 April 2000. Compared to the non-cold treated control plants, the cold-treated plants started flowering four weeks earlier resulting in 80%...

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Effects of early winter gibberellic acid and mineral oil applications on flowering of young non-bearing clementine (Citrus reticulata Blanco.) and satsuma (Citrus unshiu Marc.) trees

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M.J. Mudzunga --- Department of Horticultural Science, South Africa K.I. Theron --- Department of Horticultural Science, South Africa E. Rabe --- Department of Horticultural Science, South Africa

Gibberellic acid (GA3) and heavy mineral oil (Bac-oil) treatments, either individually or in combination, applied during the flower initiation period in early winter (April to July) were evaluated as a means to reduce flowering levels in young non-bearing citrus trees...

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Effects of nutrient regime on bulb yield and plant quality of Lachenalia Jacq. (Hyacinthaceae)

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: F. Roodbol --- , South Africa E. Louw --- , South Africa J.G. Niederwieser --- , South Africa

The effects of different nutrient regimes on the Lachenalia cvs ‘Romelia’ and ‘Namakwa’ were studied over two successive seasons. The basic formulation of the Commisie Glastuinbouw (1992), viz 0.37 g KNO3 + 0.36 g Ca(NO3)2 + 0.06 g MgS04 +...

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Phosphorous sorption study of selected South African soils

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: P.C. Henry --- , MarieF. Smith --- ,

Phosphorous isotherms for 21 selected soils from the Republic of South Africa were constructed and the Langmuir, Freundlich and Temkin sorption models were compared using regression analysis. Over a range of solution concentrations of 0.025 - 2.00 mg P I−1,...

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Development and validation of relationships between sunflower seed quality and easily measurable seed characteristics for grading purposes

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A.A. Nel --- , Republic of South Africa H.L. Loubser --- , Republic of South Africa P.S. Hammes --- Department of Plant Production and Soil Science, Republic of South Africa

Sunflower seed delivered by farmers is usually traded without taking seed quality into account, owing to the lack of a quick and inexpensive method for quality assessment at delivery points. Seed quality parameters (oil content, protein content, hullability and amount...

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Effects of nutrient supply on nutrient element content of two lachenalia cultivars

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: F. Roodbol --- , Republic of South Africa J.G. Niederwieser --- , Republic of South Africa

The N, K, Ca, P and Mg content (% dry mass) of bulbs and leaves of two lachenalia cultivars, Romelia and Namakwa, was determined at different application levels of a basic nutrient formulation to develop norms for tissue analysis and...

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Effect of leaf feeding by Melanaphis sacchari (Zehntner) (Homoptera: Aphididae), on sorghum grain quality

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J. van den Berg --- , South Africa A.J. Pretorius --- , South Africa M. van Loggerenberg --- , South Africa

A study was conducted to determine the effect of leaf feeding by the aphid, Melanaphis sacchari, on grain quality of sorghum. A field trial was planted with two sub-blocks. Each sub-block was planted with ten similar sorghum hybrids. One sub-block...

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The measurement of low organic matter contents in soils

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M.J. Rowell --- Agricultural Laboratory, Ministry of Agriculture, Water and Rural Development, Namibia M.E. Coetzee --- Agricultural Laboratory, Ministry of Agriculture, Water and Rural Development, Namibia

Four methods were compared to measure the small amounts of organic matter present in many Namibian soils and to detect organic amendments added to improve fertility. Two Walkley-Black wet oxidation methods involving titration (WBT-C) and colourimetry (WBC-C) and two loss...

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Evaluation of maize cultivars and rotation crops for resistance to damage by fungus-growing termites

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: H.F. Riekert --- , South Africa J. van den Berg --- , South Africa

The fungus-growing termites, Microtermes spp. and Allodontermes spp. are important maize pests in sub-Saha- ran Africa. The use of sunflower and sorghum as alternate or rotation crops with maize to reduce termite infestations was evaluated in field trials in South...

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CLIMGEN-UP: A user-friendly weather data generator

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: N.Z. Jovanovic --- Department of Earth Sciences, South Africa J.G. Annandale --- Department Plant Production and Soil Science, South Africa N. Benadè --- , South Africa G.S. Campbell --- , USA

User-friendly Windows software, CLIMGEN-UP, was developed based on the CLIMGEN weather data generator. CLIMGEN-UP calculates and stores monthly statistical parameters, based on historic data of daily rainfall, minimum and maximum temperature. It can then generate and store long-series of daily...

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Weed survey in cotton (Gossypium hirsutum L.) and sunflower (Helianthus annuus L.) fields in the Pandamatenga plains of northeastern Botswana

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A.E. Abdullahi --- Department of Agricultural Research, Botswana

Sunflower and cotton fields in the Pandamatenga plains of northeastern Botswana were surveyed in 1998 and 1999 for weed infestations. Twenty-seven and 24 species were identified from the fields in 1998 and 1999, respectively. Nineteen and 17 species were found...

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Effect of temperature, soil moisture content and type of cutting on establishment of sweet potato cuttings

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: T. Belehu --- Department of Plant Production and Soil Science, Republic of South Africa P.S. Hammes --- Department of Plant Production and Soil Science, Republic of South Africa

Effective rooting is essential for successful crop establishment from cuttings. The objective of this study was to determine the effect of temperature and soil water content on the root and shoot growth during the early establishment of sweet potato cuttings...

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Sorghum malting quality as affected by availability of suitable cultivars

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M. van Loggerenberg --- , A.J. Pretorius --- ,

Malting quality of grain samples of commercially available malting class sorghum cultivars was determined over five seasons and three localities for each season. The number of cultivars included in the National Sorghum Cultivar Trials has declined in recent years. The...

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The effect of temperature on the germination of six selected weed species

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: MarthaM. Manoto --- Department of Agriculture: Western Cape, Republic of South Africa MI. Ferreira --- Department of Agriculture: Western Cape, Republic of South Africa GA Agenbag --- Department of Agronomy, Republic of South Africa

Field-collected seeds were incubated in a germination cabinet at three temperature regimes and germination percentage was determined after incubation. Species such as Arctotheca calendula, Avena fatua, Bromus diandrus and Raphanus raphanistrum germinated best when subjected to a diurnal temperature regime...

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Potassium nitrate and urea sprays affect flowering and yields of ‘Tommy Atkins’ (Mangifera indica) mango in Ethiopia

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: T. Yeshitela --- Department of Plant Production and Soil Sciences, South Africa P.J. Robbertse --- Department of Plant Production and Soil Sciences, South Africa P. J.C. Stassen --- Department of Horticulture, South Africa

The effects of leaf applications of potassium nitrate (KNO3), alone and in combination with urea at different concentrations on flowering, fruit set and fruit quality of Tommy Atkins' mango grown in the rift valley of Ethiopia were evaluated. The trees...

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Chemical control of Nysius natalensis Evans (Hemiptera: Orsillidae), a pest of sunflower in South Africa

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: H. du Plessis --- , South Africa M.J. Byrne --- Ecophysiological Studies Research Group, South Africa J. van den Berg --- School of Environmental Sciences and Development, South Africa

No insecticide is currently registered for Nysius natalensis Evans (Hemiptera: Orsillidae), control on sunflower [Helianthus annuus L. (Asteraceae)]. Field as well as laboratory trials were conducted to evaluate efficacy of insecticides for N. natalensis control. During budding prior to anthesis,...

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Modelling of rainfall occurrences at Grootfontein (Karoo, South Africa)

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.C. Venter --- Department of Soil, South Africa M.T. Mebrhatu --- Department of Soil, South Africa

The modelling approach that was followed in this study makes use of a record of daily rainfall, dealing with seasonality by partitioning the year into a number of approximately homogeneous ‘seasons’. The capabilities of two models to preserve various observed...

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Effects of Artemisia afra leaf extracts on seed germination of selected crop and weed species

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: N. Ammann --- Department of Agronomy, Republic of South Africa P.J. Pieterse --- Department of Agronomy, Republic of South Africa

Herbicide resistance in weeds is a phenomenon threatening sustainable cereal production in the winter rainfall region of South Africa. Every possible weed control measure that may be used to complement chemical weed control measures should be investigated. The effect of...

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Cattle manure increases soil weed population and species diversity in a semi-arid environment

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: S.A. Materechera --- Department of Plant Production, Faculty of Agriculture, Science & Technology, South Africa L.N. Modiakgotla --- Department of Plant Production, Faculty of Agriculture, Science & Technology, South Africa

This study investigated the quality of available cattle manure resources in selected villages of the North West province and its influence as a weed seed source when applied to soil. Analysis of manure samples showed a large variation in the...

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The effect of MCPA and paclobutrazol on flowering, berry set, biomass production, tuber yield and quality of potato

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: T. Tekalign --- Department of Plant Production and Soil Science, South Africa P.S. Hammes --- Department of Plant Production and Soil Science, South Africa

The effects of MCPA and paclobutrazol on potato (Solanum tuberosum L.) flowering, berry formation, dry matter production and allocation, tuber yield and quality were investigated under greenhouse and field conditions at the Experimental Farm of the University of Pretoria. Both...

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Screening of South African sunflower (Helianthus annuus L.) cultivars for alachlor sensitivity

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J. Allemann --- Department of Soil, Crop and Climate Sciences, South Africa G.M. Ceronio --- Department of Soil, Crop and Climate Sciences, South Africa

Occasionally a herbicide that is considered safe to use at prescribed rates causes damage to crop plants at those same rates. Alachlor (Lasso EC®) is registered for use on sunflower at a rate of 1.5 to 1.92 kg ai ha−1...

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Influence of long-term wheat residue management on organic matter in an Avalon soil

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: E. Kotzé --- Department of Soil, Crop and Climate Sciences, Republic of South Africa C.C. du Preez --- Department of Soil, Crop and Climate Sciences, Republic of South Africa

This study was initiated to determine the influence of different wheat residue management practices, that were sustained for about 20 years, on the organic matter content of an Avalon soil in a long-term trial near Bethlehem in the Eastern Free...

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Evaluation of selected herbicides for the control of European gorse (Ulex europaeus L) by cut-stump and foliar treatment

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: B.D. Viljoen --- Agricultural Research Council, South Africa C.W. Stoltsz --- Agricultural Research Council, South Africa

European gorse (Ulex europaeus L) is a persistent, declared weed (Category 1) of South Africa. Current distribution is limited to the moist, high altitude regions of the Drakensberg (KwaZulu Natal Province) and Amatola (Eastern Cape Province) mountains. Gorse poses a...

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Genotype × environment interaction for root yield of elite sweet potato (Ipomoea batatas (L) lam.) genotypes

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: T. Tekalign --- Department of Plant Sciences, Ethiopia

A study was conducted to determine stability of root yield, and the nature and magnitude of genotype × environment interaction in sweet potato using six recently introduced and one farmers' cultivar, which were grown at four locations for three consecutive...

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Duration of water saturation in selected soils of Weatherley, South Africa

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: C.W. van Huyssteen --- Department of Soil, South Africa P. A.L. le Roux --- Department of Soil, South Africa M. Hensley --- Department of Soil, South Africa T.B. Zere --- Department of Soil, South Africa

Soil water contents were measured weekly for six years (1997–2005) in the Weatherley catchment in the northern Eastern Cape Province of South Africa, and used to calculate average duration of water saturation above 70% of porosity (ADs>0.7). Data were used...

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Effect of the organo-trisiloxane surfactant, Break-Thru S240, on the depth of penetration of insecticides into maize whorls and chemical control of stem borers

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J. van den Berg --- , South Africa D. Viljoen --- , South Africa

Chemical control of the stem borers Busseola fusca (Lepidoptera: Noctuidae) and Chilo partellus (Lepidoptera: Pyralidae) is complicated because of cryptic feeding deep inside plant whorls where larvae do not easily come into contact with insecticides. In this study the effect...

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Influence of long-term wheat residue management on acidity and some macronutrients in an Avalon soil

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: E. Kotzé --- Department of Soil, Crop and Climate Sciences, 9300 Republic of South Africa C.C. du Preez --- Department of Soil, Crop and Climate Sciences, 9300 Republic of South Africa

This study was initiated to determine the influence of different wheat residue management practices, that were sustained for about 20 years, on some fertility indicators of an Avalon soil in a long-term trial near Bethlehem in the eastern Free State...

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Control of black wattle (Acacia mearnsii De Wild.) seedlings with Garlon herbicide applied by backpack mistblower

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: B.D. Viljoen --- , South Africa C.W. Stoltsz --- , South Africa

Black wattle (Acacia mearnsii De Wild) has great economic value for South Africa, but also poses a tremendous threat to our natural ecosystems once it “escapes” from plantations into the surrounding grassland and watercourses, often forming dense, impenetrable thickets that...

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Grain yield and rainfall use efficiency responses of maize and alternative rotating crops under marginal production conditions in the western Highveld of South Africa

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A.A. Nel --- ,

Crop rotation is known to enhance crop yields. It is therefore recommended, regardless of rainfall and soil type, as a counter measure for the risks associated with monoculture maize (Zea mays). Experience in the western Highveld where rainfall is low...

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Herbicide resistance in weeds – a threat to effective chemical weed control in South Africa

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: P.J. Pieterse --- Department of Agronomy,

Apart from the last 40 to 50 years, weed control in crops has always been a labour-intensive and time-consuming mechanical practice. Relief came in the form of chemical compounds that could control weeds, in particular selective herbicides. The development of...

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Preliminary evaluation of soil-residual herbicides for the control of silver-leaf bitter apple (Solanum elaeagnifolium Cav.)

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: B.D. Viljoen --- , 6230 Republic of South Africa C.W. Stoltsz --- , 6230 Republic of South Africa M. van der Rijst --- , Republic of South Africa

Solanum elaeagnifolium Cav., commonly known as silver-leaf bitter apple, silverleaf nightshade or “satansbos”, has become one of the most important emerging weeds in South Africa, with the potential to spread throughout some of the major crop growing areas of the...

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A rapid demonstration of the self-thinning rule using radish

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: F.R. Smith --- , South Africa

The self-thinning rule describes the relationship between individual mass and density in crowded evenly-aged plant populations in which the slope of the relationship is always greater than -1. This study investigated whether the rule could be demonstrated in six weeks...

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Hydrological classification of orthic A horizons in Weatherley, South Africa

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: CW van Huyssteen --- Department of Soil-, Crop- and Climate Science, South Africa

Orthic A horizons carry little interpretive, especially hydrological, value. This paper aims to elucidate the hydrological interpretation of orthic A horizons. Measured water contents in the orthic A horizons of 28 profiles in the Weatherley catchment of South Africa were...

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Winter cover crops and fertiliser effects on the weed seed bank in a low-input maize-based conservation agriculture system

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: E Dube --- Department of Agronomy, Faculty of Science and Agriculture, South Africa C Chiduza --- School of Agricultural Sciences, Faculty of Agriculture, Science and Technology, South Africa P Muchaonyerwa --- School of Agricultural, Earth and Environmental Sciences, South Africa M Fanadzo --- Department of Agronomy, Faculty of Science and Agriculture, South Africa TS Mthoko --- Department of Agronomy, Faculty of Science and Agriculture, South Africa

This study investigated the effects of grazing vetch (Vicia dasycarpa L.) and oat (Avena sativa L.) cover crops and fertiliser on the seed bank of some problematic weeds in a maize-based conservation agriculture system. Soil sampling for seed bank analysis...

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Biomass production, weed suppression, nitrogen and phosphorus uptake in white oat (Avena sativa L.) and grazing vetch (Vicia dasycarpa L.) cover crop bicultures under an irrigated no-till system

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: L Muzangwa --- Department of Agronomy, Faculty of Science and Agriculture, South Africa C Chiduza --- Department of Crop Science, School of Agricultural Sciences, South Africa P Muchaonyerwa --- School of Agricultural, Earth and Environmental Sciences, South Africa

Cultivation of a multipurpose cover crop is of interest to Eastern Cape farmers experiencing soil infertility and weed pressures. The objective of the study was to investigate effects of oat–vetch bicultures on biomass production, weed suppression, and nitrogen (N) and...

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Influence of mono- and biculture cover cropping systems on soil polysaccharides and aggregate stability in a sandy loam Oakleaf soil in Eastern Cape, South Africa

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: HA Mupambwa --- Department of Agronomy, South Africa IIC Wakindiki --- Department of Agronomy, South Africa

Mono- and biculture cropping systems are thought to affect aggregate stability by influencing soil polysaccharides but the exact relationship is uncertain. The objective of this study was to determine the effects of cover cropping systems on polysaccharides and aggregate stability...

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Estimation of leaf wetness duration for a short-grass surface

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: MJ Savage --- Agrometeorology Discipline, Soil-Plant-Atmosphere Continuum Research Unit, South Africa

The measurement of leaf wetness duration (LWD) was investigated using subhourly dielectric, infrared surface temperature, dewpoint temperature, grass temperature and relative humidity (RH) measurements. Near real-time LWD data and information displays and alerts were made available timeously via a web-based...

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Host-specificity testing of Puccinia xanthii var. parthenii-hysterophorae, a potential biocontrol agent for Parthenium hysterophorus in South Africa

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Estianne Retief --- , South Africa Khayalethu Ntushelo --- , South Africa AlanR Wood --- , South Africa

Following its introduction into Australia, the rust fungus Puccinia xanthii var. parthenii-hysterophorae has played an important role in the integrated approach to manage Parthenium hysterophorus. The rust was imported from Australia and established within quarantine facilities in South Africa. Supplementary...

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Evaluation of electrical conductivity of the fertiliser solution on growth and flowering of a Cymbidium hybrid

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: SK Naik --- , India D Barman --- , India Rampal --- , India RP Medhi --- , India

The effects of three fertiliser solutions (20:20:20, 15:5:25 and 12:30:10 NPK) with electrical conductivity (EC) of 1, 1.5 or 2 mS cm−1 on growth and flowering of Cymbidium ‘Sleeping Nymph’ were investigated over three years. One-year-old tissue-cultured propagules of ‘Sleeping...

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Elucidation of seasonal pigmentation patterns in the involucral leaves of Leucadendron ‘Safari Sunset’

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Michael Schmeisser --- Department of Horticultural Science, South Africa Gerard J Jacobs --- Department of Horticultural Science, South Africa Willem J Steyn --- Department of Horticultural Science, South Africa

This study investigates seasonal pigmentation patterns found in the involucral leaves of Leucadendron ‘Safari Sunset’, with the long-term aim of colour manipulation. Treatments comprised deconed shoots and shoots in which the opening of the flower head was physically prevented. During...

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Effects of soil surface management practices on soil and tree parameters in a ‘Cripps Pink’/M7 apple orchard 1. Mineral nutrition

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: John Wooldridge --- Soil and Water Science, South Africa Johan Fourie --- Soil and Water Science, South Africa Marlise E Joubert --- Soil and Water Science, South Africa

Effects on soil, leaf and fruit element concentrations of organic (compost, straw mulch and hand weeding) and integrated (inorganic fertilisers and herbicide usage; IP) soil surface management practices in the tree rows, in combination with weed covers, cover crops and...

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Identification and distribution of viruses infecting sweet potato (Ipomoea batatas L.) in KwaZulu-Natal province, South Africa

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Benice J Sivparsad --- Discipline of Plant Pathology, School of Agricultural, Earth and Environmental Sciences, College of Agriculture and Environmental Sciences, South Africa Augustine Gubba --- Discipline of Plant Pathology, School of Agricultural, Earth and Environmental Sciences, College of Agriculture and Environmental Sciences, South Africa

A survey to determine occurrence and distribution of viruses infecting sweet potato (Ipomoea batatas (L.) Lam.) was conducted in major sweet potato growing areas in KwaZulu-Natal (KZN), South Africa. Eighty-four symptomatic vine samples were collected and graft-inoculated onto universal indicator...

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The effect of canola (Brassica napus) as a biofumigant on soil microbial communities and plant vitality: a pot study

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Clarissa Potgieter --- North-West University, South Africa Misha De Beer --- North-West University, South Africa Sarina Claassens --- North-West University, South Africa

Canola (Brassica napus) may be incorporated into soil as a biofumigant for control of pathogens such as Sclerotinia sclerotiorum. Yet, the effect of biofumigants on natural microbial communities required to maintain soil functions is still unclear. A pot experiment with...

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Observations on the linefish resources of Namibia, 1990?2000, with special reference to West Coast steenbras and silver kob

Item type: Journal Article • Journal: South African Journal of Marine Science • Authors: J. A. Holtzhausen C. H. Kirchner S. F. Voges

The Namibian linefishery is a multisector fishery, with recreational and commercial sectors targeting overlapping species. Prior to 1990, catch data were recorded for the boat sector, but little research was done on the population dynamics of any of the species...

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Age and growth of two populations of West Coast steenbras Lithognathus aureti in Namibian waters, based on otolith readings and mark-recapture data

Item type: Journal Article • Journal: South African Journal of Marine Science • Authors: J. A. Holtzhausen C. H. Kirchner

Age and growth of West Coast steenbras Lithognathus aureti, sampled from two separate populations (northern and southern) along Namibia's coast, was determined using sectioned otoliths, and the results were validated using mark-recapture data. For both populations, the special three-parameter Von...

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Quantifying commercial catch and effort of monkfish Lophius vomerinus and L. vaillanti off Namibia

Item type: Journal Article • Journal: South African Journal of Marine Science • Authors: L. Maartens A. J. Booth

Abundance and exploitation patterns of monkfish Lophius vomerinus and L. vaillanti were investigated for use as inputs into a stock assessment framework to be used for management of the Namibian monkfish resource. Total numbers of monkfish caught per size-class were...

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An assessment of the current status and potential yield of Namibia's northern West Coast steenbras Lithognathus aureti population

Item type: Journal Article • Journal: South African Journal of Marine Science • Authors: J. A. Holtzhausen C. H. Kirchner

Two distinct populations of West Coast steenbras Lithognathus aureti are found in Namibian waters; one, the northern population, is exploited recreationally and commercially. Data collected between 1995 and 1999 were used to evaluate its current state and potential yield, using...

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Seaweed species diversity in South Africa

Item type: Journal Article • Journal: South African Journal of Marine Science • Authors: J. J. Bolton H. Stegenga

A dataset is presented on the diversity of South African seaweed species and their distribution in contiguous 50-km coastal sections, to demonstrate current knowledge of the flora in various coastal regions. The coastline has a rich flora, consisting of some...

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A new species of electric ray of the genus Narcine Henle, 1834 from the South-Western Indian Ocean (Chondrichthyes: Torpediniformes: Narcinidae)

Item type: Journal Article • Journal: South African Journal of Marine Science • Authors: M. R. de Carvalho B. Séret L. J. V. Compagno

A new species of electric ray of the genus Narcine Henle, 1834 is described from seven specimens collected from two localities off the western coast of Madagascar, in the Moçambique Channel. Narcine insolita, sp. nov. is distinguished from all other...

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RATE OF EROSION IN THE CATCHMENT OF THE BULBERGFONTEIN DAM NEAR REDDERSBURG IN THE ORANGE FREE STATE

Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: J.S. Ie Roux --- Department of Geography, South Africa Z.N. Roos --- Department of Geography, South Africa

The volume of sediment in the Bulbergfontein Dam was computed after mapping the area of the dam and ascertaining the depth of the sediment by digging and augering. The watershed of the impoundment had been delimited by means of aerial...

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AQUATIC MACROPHYTE COMMUNITIES OF THE WILDERNESS LAKES: COMMUNITY STRUCTURE AND ASSOCIATED ENVIRONMENTAL CONDITIONS

Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: Clive Howard-Williams --- , South Africa

The structure and summer biomass (g m−2 dry mass) of the principal aquatic macrophyte communities of the Wilderness Lakes were measured. Both emergent and submerged communities were included in the study. Productivity estimates were made by multiplying biomass by production/biomass...

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LEAF AREA AS A MEASURE OF STANDING CROP OF FLOATING AQUATIC MACROPHYTES

Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: P.C. Keulder --- Department of Botany, South Africa

Leaf area is evaluated as a measure of standing crop of Salvinia molesta Mitchell and Azolla filiculoides Lam. cultures under controlled conditions. Growth rates as derived from leaf area determinations agreed with pigment extractions and fresh and dry weight measures...

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A COMPARISON OF DIFFERENT METHODS OF AGE DETERMINATION IN THE SHARPTOOTH CATFISH CLARIAS GARIEPINUS

Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: Douglas Clay --- Department of Zoology, U. K.

Growth of the sharptooth catfish Clarias gariepinus from four southern African impoundments was estimated by back-calculating age from vertebrae and spines. Length frequency analysis supported the growth estimates derived from vertebrae but not those from spines.- Spines under-estimated the age...

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A PRELIMINARY LIMNOLOGICAL INVESTIGATION OF TWELVE SOUTHERN AFRICAN GEOTHERMAL WATERS

Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: P.J. Ashton --- National Institute for Water Research, South Africa F.R. Schoeman --- National Institute for Water Research, South Africa

The ionic composition and algal flora of twelve geothermal waters in southern South West Africa and north-western South Africa are described, many for the first time. Water temperatures ranged from 24,9 to 66 °C and salinity values indicated moderate mineralization...

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PRODUCTION OF THE AFRICAN CATFISH (CLARIAS GARIEPINUS) II. POPULATION PRODUCTION AS ESTIMATED FROM SURPLUS PRODUCTION MODELS FOR LAKE MCILWAINE, ZIMBABWE

Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: Douglas Clay --- Marine Fish Division, Department of Fisheries and Oceans, Canada

The population production of Clarias gariepinus was studied by Schaefer type surplus production models. The maximum sustainable yield of African catfish in Lake McIlwaine, Zimbabwe was found to be in the range of 33 000 to 41 000 kg (13,46...

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NUTRIENT CYCLING IN MARINE ECOSYSTEMS

Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: P. Chapman --- , South Africa

The overall cycles of nitrogen, phosphorus and silicon in the sea are described and compared. Data on the fluxes and rates of change between various pools of each nutrient are given, where available, and gaps in knowledge are pointed out...

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A SYSTEM DYNAMICS MODEL OF PART OF THE PONGOLO RIVER FLOODPLAIN: DEVELOPMENT AND WATER MANAGEMENT POLICY ANALYSIS

Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: A.K. Drewes --- ,

The issue of allowing the Liming, duration and magnitude of a flood release to be determined by man has led to a wide spectrum of viewpoints as to which values of these parameters are most suitable for the Pongolo River...

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BEHAVIOUR OF A RADIO-TAGGED TILAPIA RENDALLI BOULENGER IN LAKE NGEZI, ZIMBABWE

Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: CharlesH. Hocutt --- Horn Point Environmental Laboratories, United States of America

The behaviour of a single specimen of Tilapia rendalli Boulenger was observed June through October 1986 in Lake Ngezi, Zimbabwe, by the use of a surgically-implanted radiotransmitter. The individual displayed a distinct homing response on two occasions, returning to the...

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Leksikografiese hantering van seksuele uitdrukkings in Afrikaans

Item type: Journal Article • Journal: South African Journal of Linguistics • Authors: Gerhardus Beukes van Huyssteen --- Departement Afrikaans en Nederlands, Republiek van Suid-Afrika

Leksikale items wat na aspekte van die seksuele domein verwys, lewer dikwels probleme op vir die leksikograaf. So byvoorbeeld is dit dikwels moeilik om die werking van uitbreidingsmeganismes soos metaforiek en metonimie in die leksikografiese bewerking van seksuele uitdrukkings te...

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THE DISTRIBUTION OF WETLANDS IN THE SOUTH-WESTERN CAPE PROVINCE, SOUTH AFRICA

Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: M.J. Silberbauer --- Department of Water Affairs and Forestry, South Africa J.M. King --- Freshwater Research Unit, Zoology Department, South Africa

The hydrological and habitat value of wetlands is beginning to be recognised in South Africa, but only in parts of Natal Province has an effort been made to map wetlands and to record their status over large areas. While the...

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GEOGRAPHICAL TRENDS IN THE WATER CHEMISTRY OF WETLANDS IN THE SOUTH-WESTERN CAPE PROVINCE, SOUTH AFRICA

Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: M.J. Silberbauer --- Department of Water Affairs, South Africa J.M. King --- Freshwater Research Unit, Zoology Department, South Africa

Although it is becoming increasingly important for the aquatic chemistry of wetlands to be understood, little chemical information is available for the wetlands of South Africa. During a project aimed at beginning to redress this gap in our knowledge, conductivity...

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THE EFFECTS OF TROUT-FARM EFFLUENTS ON BENTHIC INVERTEBRATE COMMUNITY STRUCTURE IN RIVERS IN THE SOUTH-WESTERN CAPE, SOUTH AFRICA

Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: C.A. Brown --- Freshwater Research Unit, Zoology Department, J.M. King --- Freshwater Research Unit, Zoology Department,

The south-western Cape is currently responsible for 45% of the total annual trout production in South Africa and further expansion of this industry in the region is likely. A preliminary survey of seven trout farms situated on the upper reaches...

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RELATIVELY NEGATIVE δ¹³C RATIOS OF MESOZOOPLANKTON IN THE SUNDAYS RIVER ESTUARY, COMMENTS ON POTENTIAL CARBON SOURCES

Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: H.L. Jerling --- Department of Zoology, South Africa T.H. Wooldridge --- Department of Zoology, South Africa

Mesozooplankton, submergent and fringing macrophytes and particles suspended in the water column in the Sundays River estuary South Africa were analyzed for δ13C isotope ratios. Highly negative values (−28.3‰ to −32.0‰) for the mesozooplankton species suggest the possibility of phytoplankton...

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A LIMNOLOGICAL PROFILE OF THE UPPER OKAVANGO DELTA AT LOW WATER LEVEL

Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: Rob C. Hart --- ,

Selected limnological attributes of the Okavango Delta panhandle were measured during a brief summer survey of “open-water” habitats extending from the permanent mainstream channel, through contiguous off-channel lagoons and still backwaters, to seasonally isolated floodplain lagoon and temporary pool biotopes...

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MANAGEMENT, CONSERVATION AND RESEARCH OF INTERNATIONALLY SHARED WATERCOURSES IN SOUTIIERN AFRICA—NAMIBIAN EXPERIENCE WITH THE OKAVANGO RIVER AND RIVERS OF THE EASTERN CAPRIVI

Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: E. D. Taylor --- , England S. Bethune --- , Namibia

Although the emphasis of the recent National Rivers Research Initiative (now the Research Programme for the Management of Rivers) in South Africa was on river research in that country, the reality is that in southern Africa many watercourses are shared...

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THE BARRED MINNOWS (TELEOSTEI: CYPRINIDAE) OF ZIMBABWE: IS THERE CAUSE FOR CONCERN?

Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: B. E. Marshall --- , , Zimbabwe B. Gratwicke --- , , Zimbabwe

Two species of barred minnow, Opsaridium zambezense and O. peringueyi, occur in Zimbabwe. The former is widely distributed in the Zambezi basin and some other rivers but is now absent from Lake Kariba and possibly some of its tributaries. The...

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Use of the dry-weight-rank method of botanical analysis in semi-arid savanna communities

Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: B Dekker KP Kirkman SI du Plessis

When used in combination with the double sampling (or comparative yield) method of yield estimation, the dry-weight-rank method of botanical analysis provides a rapid non-destructive means of estimating botanical composition. The composition is expressed in terms of the contribution of...

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Quantified range condition assessment of open Camelthorn savanna along a degradation gradient

Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: I Zimmermanno FP Graz MH Berry NNT Imasiku ND Muroua MM Sibalatani CS Sikopo

Measurements were taken at 20 different sites in a relatively homogenous area of open Camelthorn savanna in eastern Namibia. Ordination of grass species composition did not provide a good degradation gradient, due to domination by different species of annual grasses...

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Spatial and temporal variation in a mesic savanna fire regime: responses to variation in annual rainfall

Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: DA Balfour OE Howison

This paper analyses the fire regime over 41 years (1956 to 1996) in Hluhluwe-Umfolozi Park, a mesic savanna area in South Africa. The study focuses at the landscape scale of tens of kilometres and at the medium term temporal scale...

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Merino sheep responses to different stocking rates and seasonal variation under rangeland conditions of Lesotho

Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: LM Mpiti-Shakhane GY Kanyama-Phiri WO Odenya JW Banda

Merino sheep responses to stocking rates were determined over a one-year period. The experimental design consisted of three stocking rates; light (2.0ha LSU-1), moderate (1.25ha LSU-1) and heavy (0.5ha LSU-1) in a Randomised Complete Block Design with three replicates per...

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The influence of various types and frequencies of rest on the production and condition of sourveld grazed by sheep or cattle. 2. Vigour

Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: KP Kirkman

Treatments involving a full growing season rest in alternate years, half a growing season rest (late season) in alternate years and no rest were applied to veld grazed by sheep or cattle at similar stocking rates. Residual effects of the...

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The response of wild oats (Avena fatua L.) to sowing rate and herbicide application

Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: MA Turk AM Tawaha NH Samarah

A 2-year field study was conducted during the rainy seasons of 1999 and 2000 at Houfa in northern Jordan, to study the influence of various sowing rates (20kg ha-1, 40kg ha-1 and 60kg ha-1) and 2,4-D application at two growth...

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Factors affecting in sacco dietary degradation by Ankole cattle grazing natural range pastures in Uganda

Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: S Okello EN Sabiiti HJ Schwartz

The in sacco disappearance of dietary dry matter after 48h of incubation in the rumen (DMd) was examined for its relationship with seasonal changes in neutral detergent fibre (NDFd), crude protein (CPd), cellulose (CELL), hemicellulose (HCELL), acid detergent lignin (ADLd)...

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The extent of grass species composition in Braklaagte, Zeerust District, North-West Province, South Africa

Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: PW Malan S Van Niekerk

Grassland retrogression in tribal areas is evident. Long-term overgrazing by livestock plays an important role in grassland retrogression. Palatable species are the first to disappear and are then followed by the non-palatable species. Mismanagement and the incorrect grazing strategies by...

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Effects of regrowth period, season and harvesting frequency on the yield and nutritive value of Chloris gayana in the southern highlands of Tanzania

Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: EJ Mtengeti Magne Mo ECJ Phiri RT Chibunda GH Laswai NA Urio AE Pereka LA Mtenga R Mbwile MN Mgasa VR Muhikambele SH Israeli A Mwakilembe E Ayo

Two experiments were conducted in the Makambako division of the southern highlands of Tanzania to investigate the effects of regrowth period, season and harvesting frequency on the yield and nutritive value of Chloris gayana. The first experiment was conducted in...

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Pilot survey to assess sample size for herbaceous species composition assessments using a wheel-point apparatus on the Zululand coastal plain

Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: BH Brockett

A pilot survey to determine sub-sample size (number of point observations per plot) for herbaceous species composition assessments, using a wheel-point apparatus applying the nearest-plant method, was conducted. Three plots differing in species composition on the Zululand coastal plain were...

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Research note: Vernalization requirements of Lolium multiflorum Lam. cv. Tetrone

Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: A. Landman --- Agricultural Research Council, Republic of South Africa P.J. Robbertse --- Department of Botany, Republic of South Africa A. Smith --- Agricultural Research Council, Republic of South Africa

This study was undertaken mainly to attempt to understand why Italian type plants of Lolium multiflorum Lam. (Italian ryegrass) fail to become vernalized in certain climatic regions of South Africa. The vernalization requirements of seed and plants for the induction...

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Effect of grazing frequency and intensity on Lolium perenne L. pastures under subtropical conditions: Herbage production

Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: F.R. Mckenzie --- Department of Grassland Science, Republic of South Africa N.M. Tainton --- Department of Grassland Science, Republic of South Africa

The dry matter (DM) production of Lolium perenne (perennial ryegrass) pastures was evaluated under subtropical conditions for two years, under five combinations of grazing frequency and intensity, each applied in a rotational grazing system. Simulated continuous grazing (CG) was also...

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The influence of organic mulches on soil temperatures with the establishment of Smuts finger and white buffalo grasses on a vertic soil

Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: F.P. Jordaan --- Department of Agriculture, Republic of South Africa G.F. Rautenbach --- Department of Agriculture, Republic of South Africa

Fine‐seeded grasses are established with great difficulty, especially on heavy clay soil, but the literature suggests that organic mulches may counteract constraining soil factors which result in poor germination. Various organic mulches were used in this study in order to...

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Study on the early effects of several weed-control methods on Parthenium hysterophorus L.

Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: J Goodall --- , South Africa M Braack --- KZN Department of Agriculture and Environmental Affairs, South Africa J de Klerk --- , South Africa C Keen --- , South Africa

We carried out a trial in the Hluhluwe-iMfolozi Park comparing three herbicides and two manual control techniques for controlling the annual weed Parthenium hysterophorus L. The herbicides 2,4-D amine (480 g ai l−1), metsulfuron methyl (600 g kg−1) and picloram...

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Community dynamics and phytomass of herbaceous species in the Sudaniansavanna-woodlands of Burkina Faso: short-term impact of burning season

Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: SD Dayamba --- Tropical Silviculture and Seed Laboratory, Southern Swedish Forest Research Centre, Faculty of Forest Sciences, Sweden P Savadogo --- Tropical Silviculture and Seed Laboratory, Southern Swedish Forest Research Centre, Faculty of Forest Sciences, Sweden L Sawadogo --- Département Productions Forestières, Burkina Faso D Tiveau --- , République Démocratique du Congo D Zida --- Département Productions Forestières, Burkina Faso M Tigabu --- Tropical Silviculture and Seed Laboratory, Southern Swedish Forest Research Centre, Faculty of Forest Sciences, Sweden PC Oden --- Tropical Silviculture and Seed Laboratory, Southern Swedish Forest Research Centre, Faculty of Forest Sciences, Sweden

Fire is important for the maintenance and conservation of African savanna ecosystems, and prescribed fire is used in the Sudanian savanna-woodlands of West Africa as a forest management tool. Yet, the effects of fire on savanna ecosystems and especially on...

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Analysis of individual tree volume equations for Cupressus lusitanica in Munessa forest, Ethiopia

Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: T. Teshome

Three different volume equations were fitted to individual tree volume (V) data collected on 260 Cupressus lusitanica trees from 49 plantations in Munessa Shashemene Forest, Ethiopia. The data were first split randomly into equation development and equation testing data sets...

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Towards reduced herbicide use in forest vegetation management

Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: K.M. Little I. Willoughby R.G. Wagner P. Adams H. Frochot J. Gava S. Gous R.A. Lautenschlager G. örlander K.V. Sankaran R.P. Wei

Mechanical, manual, thermal, biological and chemical methods of managing forest vegetation have, to a large extent, been developed independently. The effectiveness and relatively low cost of chemical herbicides, however, have led to systems of vegetation management that rely on their...

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Kraft Pulping Properties of Acacia mearnsii and Eucalyptus grandis Grown in Zimbabwe

Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: A. Muneri --- , Australia

Pulpwood samples from 8-year old Acacia mearnsii and Eucalyptus grandis plantations grown in Zimbabwe were evaluated for kraft pulping, bleaching and papermaking properties. The possibility of co-pulping the two species was also investigated.

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Nutrient levels of three Eucalyptus species/provenances, measured over four seasons in a trial along the sandy, dry, Cape West Coast of South Africa

Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: F. Ellis --- Faculty of Forestry, A. van Laar --- Faculty of Forestry,

Foliage nutrient content of 3 to 6-year old Eucalyptus species/provenances (E. camaldulensis, E. globulus and E. grandis x E. tereticornis) were analysed for eleven elements over a four-year period. The trial was planted on three sites, adjacent to each other,...

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Certification: Situation analysis of private timber growers in South Africa

Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: Cori Ham --- Faculty of Agricultural and Forestry Sciences,

Forest certification has become an important aspect to consider in forestry. The South African forestry industry has adopted to a system of forest certification fairly easily. The private timber growers are also expected to implement certification, but can they adapt...

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Home Brewed Alcohol use Among High School Students in a Rural South African Community

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Hans Onya --- University of Limpopo, Alan Flisher --- University of Cape Town,

This study investigates the use of home brewed alcoholic beverages among adolescents in high schools in a rural community in South Africa. There is much concern about alcohol misuse among young people and very little information exists on alcohol produced...

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Perceptions of Child Abuse by Teacher Trainees in Zimbabwean Schools

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Almon Shumba --- School of Education Studies,

This study is a part of a larger study that examined the epidemiology and aetiology of child abuse by teachers in Zimbabwean primary schools. The purpose of the study was to determine teacher trainees' conception of sexual abuse of pupils...

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Training of Professional Psychologists for Africa: Community Psychology or Community Work?

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Olaniyi Bojuwoye --- University of Kwazulu-Natal, South Africa

If the practice of psychology is to be relevant to environmental realities and context sensitive then conscious consideration must be given to the psychology training programme. Training programmes should give due recognition to the historical, political, social, economic and cultural...

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Community Psychology in Ghana: Challenges, Successes and Prospects

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Charity S. Akotia --- Department of Psychology, Ghana Kofi Bobi Barimah --- Faculty of Economics and Business Administration, Ghana

Community psychology gained formal recognition in Ghana when a few students were admitted to Wilfrid Laurier University, in Canada, to pursue master's degree in the early 1990s. In Ghana, community psychology is enacted through the operations of non-governmental organizations (NGOs)...

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Domestic Workers' Experiences of Power and Oppression in South Africa

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Fiona M. Donald --- School of Human and Community Development, University of the Witwatersrand, Lerato Mahlatji --- School of Human and Community Development, University of the Witwatersrand,

This study examines the work experiences of domestic workers in the context of socio-economic-political legislation promulgated to protect their social rights in the new South Africa. It gains insight into the power relations and embedded tensions between employers and domestic...

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Psychological Well-Being and the Metabolic Syndrome in African and Caucasian Women in South Africa

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Elsabé M. Botha --- North-West University, South Africa Marié P. Wissing --- North-West University, South Africa Suria M. Ellis --- North-West University, South Africa Hester H Vorster --- North-West University, South Africa

This study explored the association between comprehensive psychological well-being and the metabolic syndrome (MS), as well as whether women without MS markers differ significantly from women with MS (three or more markers) on specific facets of psychological well-being. African (N=102)...

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Students' Self-Concept and Academic Achievement in Zimbabwe: A Preliminary Study

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Pesanayi Gwirayi --- Midlands State University, Almon Shumba --- University of Fort Hare, South Africa

Students' personal beliefs about their capabilities to learn influence their motivation and learning. This study determined the relationship between self-concept and academic achievement of Zimbabwean primary school students. A qualitative approach was used to collect data from 75 pupils (36...

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The Structure of Psychological Well-Being in Cultural Context: Towards a Hierarchical Model of Psychological Health

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Marié P. Wissing --- North-West University, South Africa Q. Michael Temane --- North-West University, South Africa

This study explored whether an overlap exists in the empirical manifestations of various constructs for psychological well-being. Secondary factor analyses were conducted on data obtained from four studies, comprising 2,024 participants from relatively individualist and collectivist cultural contexts. Questionnaires varied...

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Dimensions of Social Well-Being in a Motor Manufacturing Organisation in South Africa

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Melanie de Jager --- University of South Africa, Sanet Coetzee --- University of South Africa, Deléne Visser --- University of South Africa,

The study examined the psychometric properties of the 15-item version of the Social Well-being Scale (SWBS-15: Keyes, 1998) for a South African sample with diversity in culture. The SWBS-15 and a biographical questionnaire were administered to employees in a motor...

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The Role of Personality Factors in the Dynamics of Context and Psychological Well-Being

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Q. Michael Temane --- North-West University, Marié. P. Wissing --- North-West University,

The purpose of this study was to determine personality factors that mediate between context and psychological well-being. A convenience sample of 514 mutlicultural participants from Potchefstroom (n=384) and Mafikeng (n=130) comprising mainly of black and white students was drawn. The...

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Validation of a Coping Scale in an African Context

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Carelyn van der Walt --- North-West University, South Africa Johan C. Potgieter --- North-West University, South Africa Marié P. Wissing --- North-West University, South Africa Michael Q. Temane --- North-West University, South Africa

The research aims were to compile and validate a multi-dimensional coping measure, taking African-centred coping behaviour into consideration. In a pilot study the Setswana-COPE (S-COPE) and the Africultural Coping Systems Inventory (ACSI) were administered to Setswana-speaking participants (N = 274)...

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Views from Africa on Positive Psychology

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Irma Eloff --- University of Pretoria, South Africa Mustapha Achoui --- King Fahd University of Petroleum & Minerals, Saudi Arabia Regis Chireshe --- Great Zimbabwe University, Zimbabwe Megan Mutepfa --- Zimbabwe Psychological Association, Caroline Ofovwe --- University of Benin, Nigeria

This study explored the state of Positive Psychology in six African countries. Thirty-seven participants from the six African countries responded to a survey on the status and prospects for positive psychology in the respective countries. Data was analyzed qualitatively and...

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Validation of a Community Collective Efficacy Scale in an African Context

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Wilmien van Straten --- North-West University, South Africa Q. Michael Temane --- North-West University, South Africa Marie P. Wissing --- North-West University, South Africa Johan Potgieter --- North-West University, South Africa

The aim of this study was to validate a community collective efficacy scale in an African context. An abridged version of the Community Collective Efficacy Scale was validated in a cross-sectional survey design. Participants (N = 1050) from urban (n...

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Pupils' Perceptions of Sexual Abuse by Teachers in Zimbabwe

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Almon Shumba --- University of Fort Hare, Pesanayi Gwirayi --- Midlands State University, Jenny Shumba --- Morgan ZINTEC College, Cosmas Maphosa --- Zimbabwe Open University, Regis Chireshe --- Great Zimbabwe University, Ephias Gudyanga --- Midlands State University, Alfred Henry Makura --- University of Fort Hare,

Most studies available on sexual abuse of pupils in schools have examined the epidemiology of the phenomenon by teachers but have not looked at what the pupils themselves say about why some teachers sexually abuse them. This study sought to...

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Childhood Sexual Abuse Experiences of Female Student Teachers in Zimbabwe

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Pesanayi Gwirayi --- Midlands State University, Zimbabwe Almon Shumba --- University of Fort Hare, South Africa

The study investigated childhood sexual abuse (CSA) experiences of female student teachers in Zimbabwe. A convenience sample of 112 female respondents (mean age = 27.4 years) responded to a retrospective questionnaire which assessed childhood sexual experiences. Data were analysed descriptively...

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The Design and Evaluation of a Hope Enhancement Programme for Adults

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Charl Pretorius --- University of the North-West, Chris Venter --- University of the North-West, Michael Temane --- University of the North-West, Mariè Wissing --- University of the North-West,

The study evaluated the effectiveness of a hope enhancement programme for a group of adults and its impact on general psychological well-being. The intervention programme focused on participants' abilities to set feasible goals, planning ways to reach those goals (pathways)...

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Relations of Power in Different Spaces: An Exploration of the Schooling Experiences of Children in an HIV/AIDS Context

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Anitha Ramsuran --- University of KwaZulu-Natal, Fikile Lurwengu --- University of KwaZulu-Natal,

In this article we explore how the concept of relations of power in different spaces plays out in the lives of school children living in an HIV/AIDS context, and how processes of inclusion and exclusion are associated with particular spaces...

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Psychometric Properties of Various Scales Measuring Psychological Well-Being in a South African Context: The FORT 1 Project

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Jan A. B. Wissing --- North-West University, Marié P. Wissing --- North-West University, Marietjie M. du Toit --- North-West University, Q. Michael Temane --- North-West University,

The aim of this study was to do a first phase screening of psychometric properties of various scales measuring facets of psychological well-being so as to address further questions in the FORT 1 project (FORT 1 = Clarifying the nature...

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Lived Experiences of Subclinical Eating Disorder: Female Students' Perceptions

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Doret K. Kirsten --- North-West University, Wynand F. du Plessis --- North-West University,

The aim of this study was to obtain an “insiders' perspective” on the lived experience of Subclinical Eating Disorder (SED) in female university students. Participants were 30 white, undergraduate females from the Potchefstroom campus of the North-West University in South...

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The Islamic Careline Ladies Lifeskills Program: An Empowerment Initiative

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Sumaya Laher --- University of the Witwatersrand, South Africa

The Islamic Careline established a Ladies Lifeskills program in response to a shared view by clients, volunteers and management at the Careline that females within the community were experiencing feelings of disempowerment and low self esteem. In practice, the program...

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Forgiveness and the Well-Being of Members of the South African National Defence Force (SANDF): A Process for Discussion

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Gideon A.J. van Dyk --- Stellenbosch University,

Africa is a continent of conflict, violence and war. South Africa, with a recent history of apartheid and current high percentage of crime is no exception. Members of the South African National Defence Force (SANDF) take part in peacekeeping operations...

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Reasons and Justifications Used by Child Abuse Perpetrators in Zimbabwean Schools

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Almon Shumba --- University of Fort Hare, South Africa

This study sought to determine reasons and justifications used by child abuse perpetrators as viewed by education officers who handle and process cases of child abuse by teachers in Zimbabwe. Six education officers were interviewed. They were purposefully selected for...

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Management of Child Sexual Abuse Cases by Female School Heads in Zimbabwe

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Alfred Henry Makura --- University of Fort Hare, South Africa Almon Shumba --- University of Fort Hare, South Africa

This study determined the nature, extent and causes of child sexual abuse cases and how Zimbabwean female primary school heads handle such cases in their schools. Seven female primary school heads from the southern province were interviewed. data were analysed...

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Child Physical Abuse Among Urban Secondary School Pupils in Zimbabwe

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Pesanayi Gwirayi --- University of Fort Hare, South Africa Almon Shumba --- University of Fort Hare, South Africa

The study had two main objectives: (a) to examine the nature and prevalence of child physical abuse among urban secondary school pupils in Zimbabwe; and (b) to investigate pupils' views on the causes of child physical abuse among urban secondary...

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Gender, Spirituality and Psychological Well-Being

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Cristel Vosloo --- North-West University, Marié P. Wissing --- North-West University, Q. Michael Temane --- North-West University,

The aim of this study was to determine whether gender moderates the relationship between spirituality and psychological well-being. A secondary data analysis based on a cross sectional survey was implemented. A convenience sample of 508 participants (males = 143, females...

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The Experience of Stress and Trauma: Black Lesbians in South Africa

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Marlene Arndt --- University of Johannesburg, Helena Hewat --- University of Johannesburg,

The qualitative study explored the socio-cultural experiences of Black lesbians in South Africa. Participants were ten Black lesbians living around Johannesburg, Gauteng Region. Their ages ranged between 20 and 37 years. We used a phenomenological approach. The interview technique adopted...

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Child Abuse: Psychosocial and Religious Intervention Strategies in Zimbabwe

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Regis Chireshe --- Walter Sisulu University, Excellent Chireshe --- Great Zimbabwe University, Pilot Mudhovozi --- University of Venda,

The article examines psychosocial and religious intervention strategies used to prevent and manage child abuse in Zimbabwe. Psychosocial interventions used include primary, secondary and tertiary interventions. Religious interventions include primary and tertiary intervention. It appears that the intervention strategies are...

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Psychometric Properties of the Short Self-Regulation Questionnaire (SSRQ) in a South African Context

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Johan C. Potgieter --- North-West University, South Africa Karel F.H. Botha --- North-West University, South Africa

Self-regulation (SR), an important construct within the psychological well-being context, involves the ability to monitor behaviour, to contrast it with reference values and to introduce adjustments where necessary. A lack of validated measures of SR in the South African context...

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Emotional Intelligence, Work, and Psychological Outcomes in a Public Service Context

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Shelley-Ann Williams --- North-West University, South Africa Marié P. Wissing --- North-West University, South Africa Sebastiaan Rothmann --- North-West University, South Africa Q. Michael Temane --- North-West University, South Africa

This study examines the role of emotional intelligence in the relationship between work context (conceptualised as job demands and job resources) and psychological outcomes (conceptualised as engagement and psychological well-being) in a sample of public sector employees (N=459). The Job...

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Counselling for Psychological Well-Being in Persons Living with HIV/AIDS

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Stephen D. Edwards --- University of Zululand, South Africa David J. Edwards --- University of Zululand, South Africa

A psychological well-being counselling program, which provided person centered, group counselling interventions for inpatients infected with HIV/AIDS was evaluated at Amangwe therapeutic village in KwaZulu-Natal, South Africa. The aim was to improve the psychological well-being of participants (9 male, 21...

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Development and Initial Validation of a General Psychological Well-being Scale (GPWS) in an African Context

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Itumeleng P. Khumalo --- North-West University, South Africa Q. Michael Temane --- North-West University, South Africa Marié P. Wissing --- North-West University, South Africa

This study aimed to develop and validate the General Psychological Well-being Scale (GPWS) in an African sample, based on the empirical overlap between hedonic and eudaimonic facets of well-being as found in previous research. The quantitative cross-sectional study was conducted...

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Self-efficacy, Work, and Psychological Outcomes in a Public Service Context

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Shelley-Ann Williams --- North-West University (Potchefstroom Campus), South Africa Marié P. Wissing --- North-West University (Potchefstroom Campus), South Africa Sebastiaan Rothmann --- North-West University (Vaal Triangle Campus), South Africa Q. Michael Temane --- North-West University (Potchefstroom Campus), South Africa

The study examined the prediction of psychological outcomes (conceptualized as psychological well-being and engagement) by general self-efficacy (GSE) and work context (conceptualized as job demands and job resources). The role of GSE as a moderator between work context and psychological...

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Psychosocial Well-being in a Group of South African Adolescents

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Izanette van Schalkwyk --- North-West University (Potchefstroom Campus), South Africa Marié P. Wissing --- North-West University (Potchefstroom Campus), South Africa

The aim of this study was to explore the psychosocial well-being of a group of South African adolescents. Participants (N=665, ages 15–17 years; males = 214, females = 451) from three high schools completed questionnaires on psychosocial well-being. Structured interviews...

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The Impact of Poverty on Women's Psychosocial Well-being: Narratives from Zimbabwean Migrant Women in South Africa

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Regis Chireshe --- Walter Sisulu University, South Africa

The study investigated the psychosocial impact poverty has had on Zimbabwean migrant women. The sample comprised 7 female participants (3 professional teachers and 4 informal traders) who had migrated to South Africa because of poverty. Their age ranged from 16...

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Poverty and HIV/AIDS in Sub-Saharan Africa: Implications for Psychological Well-being

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Joseph M. Kasayira --- University of Malawi, Regis Chireshe --- Walter Sisulu University, South Africa

The study examines the literature on poverty and HIV/AIDS in an effort to explore the various psychological resources available for affected individuals. Poverty is an increased risk for HIV and AIDS for a majority of the citizens of sub-Saharan Africa,...

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Constructions of Masculinity, Mental Toughness and the Inexpressibility of Distress among a Selected Group of South African Veterans of the ‘Bush War’ in Namibia

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Diana Gibson --- University of the Western Cape,

The study examined the manner in which conscripted combat veterans make meaning of their violent experiences during the apartheid-era ‘Bush War’ in the border area between Namibia and Angola. A total of 43 ex-combatants participated in the study (23 Afrikaans-speaking;...

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Psychosocial Health of an African Group before Awareness of HIV Status: A Comparative Study

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Lanél Maré --- North-West University (Potchefstroom Campus), South Africa Marié P. Wissing --- North-West University (Potchefstroom Campus), South Africa Mada J. Watson --- North-West University (Potchefstroom Campus), South Africa Suria M. Ellis --- North-West University (Potchefstroom Campus), South Africa

This study aimed to explore the psychosocial health profiles of people with and without HIV before they learned their infection status. A total of 1,025 participants (males = 386, females = 639, age range = between 32 and 87, infected...

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Coping, Occupational Wellbeing and Job Satisfaction of Nurses

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Johanna H. Buitendach --- University of KwaZulu Natal, Mohammed Abed Moola --- University of KwaZulu Natal,

The study determined the relationship between coping, occupational wellbeing (as measured by burnout and work engagement), and job satisfaction of nurses in two private hospitals in Namibia. A cross-sectional research design was used. One-hundred and ninety-one nurses employed in two...

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Coping Self-Efficacy as Mediator in the Dynamics of Psychological Well-Being in Various Contexts

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Marié P. Wissing --- North-West University (Potchefstroom Campus), South Africa Itumeleng P. Khumalo --- North-West University (Potchefstroom Campus), South Africa Tertia M. Oosthuizen --- North-West University (Potchefstroom Campus), South Africa Alida Nienaber --- North-West University (Potchefstroom Campus), South Africa Annamarie Kruger --- North-West University (Potchefstroom Campus), South Africa Johan C. Potgieter --- North-West University (Potchefstroom Campus), South Africa Q. Michael Temane --- North-West University (Potchefstroom Campus), South Africa

The aim of this study was to explore whether coping self-efficacy mediates between various distress related variables on the one hand (symptoms of stress and depression), and the degree of psycho-social well-being as measured on the upper end of the...

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African Female Adolescents' Experience of Parenting and Their Sense of Well-Being

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Vicki Koen --- North-West University, South Africa Chrizanne van Eeden --- North-West University, South Africa Chris Venter --- North-West University, South Africa

The objective of this study was to explore and describe South African, African female adolescents' experience of parent-adolescent relationships and their perceptions of the influence of the parent-adolescent relationship on aspects of their sense of well-being. Sixty-two African female adolescents...

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Identifying and Dealing with the Adaptability Needs of an Unwed Pregnant Teenager

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Jacobus G. Maree --- University of Pretoria, South Africa Esta Hansen --- University of Pretoria, South Africa

This article describes a way of identifying and dealing with the adaptability needs of a pregnant teenager from a life design perspective. The participant was selected purposively from among a group of undergraduate students at an institution for unwed mothers...

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Tomatis Method Stimulation: Effects on Student Educational Interpreters

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Ina-Marí du Toit --- North-West University, South Africa Wynand F. du Plessis --- North-West University, South Africa Doret K. Kirsten --- North-West University, South Africa

This study explored the impact of the Tomatis Method of sound stimulation on student interpreters at a merged higher education institution in South Africa. Interpreters were randomly allocated to a pre-post, experimental (n=9) and non-intervention control group (n=9) (age range...

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Well-Being in the Batswana Cultural Context: Constructs and Measures

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Itumeleng P. Khumalo --- North-West University, South Africa Q. Michael Temane --- North-West University, South Africa Marié P. Wissing --- North-West University, South Africa

The study investigated wellbeing in a Setswana-speaking sample. Participants (n=459, males =141 females =318; 22% = aged between 30 and 40 years) completed the General Psychological Well-being Scale (GPWS: Khumalo, Temane & Wissing, 2010) and the Mental Health Continuum Short-Form...

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Lived Experiences of Informal Settlers in Peri-Urban Districts in Zimbabwe

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Excellent Chireshe --- Great Zimbabwe University, Zimbabwe Takupiwa Nyanga --- Great Zimbabwe University, Zimbabwe John S. Mapfumo --- Africa University, Zimbabwe Regis Chireshe --- University of South Africa,

The study explored the lived experiences of informal settlers in two peri-urban cities of Zimbabwe (n=53, males=19, females=34; Age range 18 to 76 years). The settlers self-reported on aspects of wellbeing, including perceived neighborliness of habitats. Data were thematically analyzed...

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Cultural Embeddedness of Health, Illness and Healing: Prospects for Integrating Indigenous and Western Healing Practices

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Tholene Sodi --- University of Limpopo, South Africa Olaniyi Bojuwoye --- University of the Western Cape, South Africa

Culture influences conceptualizations about illness, health and healthcare. In this article we argue that Western-oriented health care models have limited success when applied to health conditions of people of non-Western cultures and contend that culture is an important factor in...

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Psychological Empowerment, Work Engagement and Turnover Intention: The Role of Leader Relations and Role Clarity in a Financial Institution

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Japie R. de Villiers --- North-West University, South Africa Marius W. Stander --- North-West University, South Africa

This study investigated the relationship between leader-member exchange, role clarity, psychological empowerment, engagement and turnover intention within a financial institution in South Africa. A cross-sectional survey design was used. A convenience sample (N = 278) was taken (males =31%, females...

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The Effect of the Lifeplan® Programme on the Psychological Wellbeing of a Rural Community in South Africa

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Annelize Bonthuys --- North-West University (Potchefstroom Campus), South Africa Karel F. H. Botha --- North-West University (Potchefstroom Campus), South Africa Alida W. Nienaber --- North-West University (Potchefstroom Campus), South Africa Fazel E. Freeks --- North-West University (Potchefstroom Campus), South Africa Annamarie Kruger --- North-West University (Potchefstroom Campus), South Africa

This study explored the effect of the Lifeplan® programme on a rural South African community's psychological wellbeing. Participants were adult individuals (N=99) between 20 and 83 years (mean age = 43 years, SD=13.28). A mixed method sequential explanatory research design...

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Self-Efficacy and Physical Self-Concept as Mediators of Parenting Influence on Adolescents' School and Health Wellbeing

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Said Aldhafri --- Sultan Qaboos University, Oman

The current study examines the role of parenting styles (permissive, authoritative, and authoritarian) in predicting adolescents' school and health wellbeing through the mediational role of adolescents' academic self-efficacy and physical self-concept. Data were collected from 1599 Omani adolescents (mean age...

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Hope, Psychosocial Well-Being and Socioeconomic Status Among a Group of South African Adolescents

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Tharina Guse --- University of Johannesburg, South Africa Yvonne Vermaak --- University of Johannesburg, South Africa

The aim of this study was to explore hope and psychosocial well-being among South African adolescents (N = 1169; males = 573, females = 596, mean age = 15.1) from different socioeconomic contexts. Data was collected by means of convenience...

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Psychofortology of Women Undergoing Infertility Treatment

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Paul Fouché --- University of the Free State, South Africa Nico Nortjé --- University of the Free State, South Africa Kerry Phillips --- Nelson Mandela Metropolitan University, Louise Stroud --- Nelson Mandela Metropolitan University,

This study explored the coping and subjective well-being of women undergoing infertility treatment. Participants were 61 South African women attending a fertility clinic was selected by means of non- probability purposive sampling (mean age = 34.5). Data were gathered by...

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The Meaning of Emotion in the White Afrikaans Language Group: A Componential Emotion Theory Approach

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Cara Jonker --- North-West University, Potchefstroom Campus, South Africa Althea van der Merwe --- North-West University, Potchefstroom Campus, South Africa Johnny Fontaine --- Gent University, Belgium Deon Meiring --- University of Pretoria, South Africa

This study determined the meaning of emotion in a sample of white Afrikaans-speaking adults (n=120; males =32, females=88, age range =18–48+ years). Data were collected using the Meaning Grid (Scherer, 2005). The analysis examined the factor loadings of emotion words...

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Influences on Fertility Control and Early Parenthood in a Rural District of Zimbabwe

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Nyengeterai Chemhuru --- Zimbabwe Open University, Zimbabwe Jephias Matunhu --- Midlands State University, Zimbabwe Almon Shumba --- Central University of Technology, South Africa Winifrida S. Nyamande --- Zimbabwe Open University, Zimbabwe Janet P. Mahlatini --- Zimbabwe Open University, Zimbabwe

This study investigated influences on fertility control and early parenthood among teenage learners from a rural district in Zimbabwe. Data on perceived influences on risks for early parenthood were collected from 1320 female secondary school learners (mean age=16 years, SD=1.35)...

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Prevalence and Characteristics of Unresolved Paternal Identity in Families of a South African Community

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Mzikazi Nduna --- University of the Witwatersrand, Mambwe Kasese-Hara --- University of the Witwatersrand, Misheck Ndebele --- University of the Witwatersrand, Noleen Pillay --- University of the Witwatersrand, Leseho Manala --- , South Africa

This study investigated the unresolved and unknown paternal identity among families in Alexandra Township in South Africa. Fifty-four guardians who had children registered at the Centre completed face-to-face, one-on-one structured interviews. We conducted descriptive and bivariate analyses. About 31.5% of...

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Guidelines with Strategies for Enhancement of Resilience and Psycho-Social Well-Being in Professional Nurses

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Magdalena P. Koen --- North-West University, South Africa Chrizanne van Eeden --- North-West University, South Africa Marié P. Wissing --- North-West University, South Africa Vicki Koen --- North-West University, South Africa

There are currently no guidelines available for enhancement of resilience in professional nurses. This study aims to provide broad guidelines with specific strategies that may enhance resilience and psycho-social well-being in professional nurses. These guidelines are based findings from previous...

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A Case of Tragic Optimism: Volunteer Counsellors' Experience of Meaning

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Henry D. Mason --- Tshwane University of Technology, Juan A. Nel --- University of South Africa,

This study applied concepts from logotherapy to construct the meaning that volunteer crisis counsellors experienced by working with victims of crime. Data were collected from seven participants who delivered services at community-driven crisis centre using a qualitative approach. The data...

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Normative Indicators for Xhosa Speaking Unskilled Workers on the Wechsler Memory Scale Associate Learning and Visual Reproduction Subtests

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Lauren Fike --- Rhodes University, South Africa Jan Knoetze --- Rhodes University, South Africa Ann Shuttleworth-Edwards --- Rhodes University, South Africa Sarah Radloff --- Rhodes University, South Africa

This study set out to provide preliminary cross-cultural normative data for educationally disadvantaged Black South African Xhosa individuals (N=33; age range = 18 to 40 years; highest educational level = Grade 11 or Grade 12), on the Associate Learning and...

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An Exploration of Families' Psychosocial Well-Being in a South African Context

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Vicki Koen --- North-West University, South Africa Chrizanne van Eeden --- North-West University, South Africa Sebastiaan Rothmann --- North-West University, South Africa

The aim of this study was to explore and describe aspects that contribute to the psychosocial well-being of families from diverse cultures in a South African context by analysing data obtained through narratives, drawings and interviews with families. Participant families...

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Victim Empowerment Programme in a Selected Municipality of the Eastern Cape, South Africa: Service Provider Perceptions

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Nancy Phaswana-Mafuya --- Human Sciences Research Council, South Africa Karl Peltzer --- Human Sciences Research Council, South Africa Gladys Mlambo --- Human Sciences Research Council, South Africa Seth Mkhonto --- Human Sciences Research Council, South Africa Cily Tabane --- University of the Witwatersrand,

An exploratory qualitative study was conducted to assess service providers' perceptions of the Victim Empowerment Programme (VEP) with a focus on VEP knowledge, management, communication, empowerment, utilization and accessibility of services in a selected district of the Eastern Cape of...

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Community-Based Participatory Research a Low-Income Setting: An Illustrative Case of Study

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Sandy Lazarus --- Medical Research Council, South Africa Naiema Taliep --- Medical Research Council, South Africa Abdulsamed Bulbulia --- University of South Africa, South Africa Shaun Phillips --- Hearts of Men, Mohamed Seedat --- University of South Africa, South Africa

This article describes a community-based participatory research (CBPR) approach in a low-income setting. Using the SCRATCHMAPS project as a case example and with literature control, we show that CBPR is influenced by dynamics relating to knowledge and power, resources and...

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Merging Professional Training and Community Engagement Agendas: A Case Study

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Tanya M. Graham --- University of the Witwatersrand, South Africa Kerry J. Gordon --- University of the Witwatersrand, South Africa Sarah A. Uren --- Independent Counselling and Advisory Services, South Africa Lauren Fitchet --- Independent Counselling and Advisory Services, South Africa Victoria A. Hall --- Independent Counselling and Advisory Services, South Africa Malose Langa --- University of the Witwatersrand, South Africa

This case study explored the emancipatory foundations of community work through a schools-based peer support intervention. We use a case study approach to describe the context in which the intervention was developed, its emancipatory theoretical foundations, and the project's implementation...

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Exploring Perceptions of Xenophobia in a Sample of South African Employees

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Elzabé Coetzee --- University of South Africa, South Africa

This brief report aimed to explore the perceptions of xenophobia within a sample of South African employees. Data on participants' views regarding xenophobia, related xenophobic violence and causes were collected from 127 respondents (males=43%, females=57%, with the majority of respondents...

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The Prevalence of Coping Behaviour, Posttraumatic Growth and Psychological Well-Being in Women who Experienced Childhood Sexual Abuse

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Hayley J. Walker-Williams --- North-West University, South Africa Chrizanne van Eeden --- North-West University, South Africa Karen van der Merwe --- North-West University, South Africa

This study investigated the prevalence of coping behaviour, posttraumatic growth and psychological well-being in adult South African women (n=60, mean age=32, ethnicity=70% European, 28% African and 2% Asian descent). Specifically, the study considered the prevalence of constructive coping, posttraumatic growth...

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The Factor Structure and Reliability of a Six-Item Sense of Coherence Measure

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Antoni Barnard --- University of South Africa, Helene Muller --- University of South Africa,

The study investigated the factor structure and reliability of a six-item sense of coherence (SOC) measure. Participants were a South African white collar employee sample (n=7185) purposively selected from over 300 different companies across various business sectors. The sample constituted...

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Psychological Well-Being and Resilience as Predictors of First-Year Students' Academic Performance

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Martina Kotzé --- University of the Free State, Ronel Kleynhans --- University of the Free State,

This study investigated aspects of psychological well-being (burnout and engagement) and resilience as predictors of the academic performance of a group of first-year students at a higher education institution. Participants included 789 first-year students at a South African university (females...

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The Psychometric Properties of the Adapted and Revised Organisational Climate Description Questionnaire (AAROCDQ)

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Werner de Klerk --- North-West University, South Africa Q. Michael Temane --- North-West University, South Africa Alida W. Nienaber --- North-West University, South Africa

This study validated the Adapted and Revised Organisational Climate Description Questionnaire (AAROCDQ) for school climate as experienced by teachers. Participants were 394 school teachers (72 male and 322 female) from 40 schools in South Africa. Internal consistency and factor structure...

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A Model for Psychosocial Well-Being of Families in a South African Context

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Vicki Koen --- North-West University, South Africa Chrizanne van Eeden --- North-West University, South Africa Sebastiaan Rothmann --- North-West University, South Africa

This study applied the approach of Dickoff, James, and Wiedenbach (1968) to construct a conceptual framework and a model for the psychosocial well-being of families from diverse cultures in a South African context. Findings from previous qualitative research served as...

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Coping Behaviour, Posttraumatic Growth and Psychological Well-Being in Women with Childhood Sexual Abuse

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Hayley J. Walker-Williams --- North-West University, South Africa Chrizanne van Eeden --- North-West University, South Africa Karen van der Merwe --- North-West University, South Africa

This study investigated the coping behaviours and posttraumatic growth of women with sexual abuse in childhood (CSA) and long-term effects on their psychological well-being in adulthood. Participants were 10 women survivors of CSA (ages ranging from 23–48 years). Data on...

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Access to Sexuality Information by Zimbabwean School Teenagers

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Martin Musengi --- University of the Witwatersrand, South Africa Almon Shumba --- Central University of Technology, South Africa

This study reports on the findings on access to sexuality information by Zimbabwean school teenagers from a region with cultural rites of passage to adulthood. Participants were a convenience sample of 100 Shangaan speaking high school students (females = 50%)...

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Psychosocial Well-Being of Families in a South African Context: A Prospective Multifactorial Model

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Vicki Koen --- North-West University, South Africa Chrizanne van Eeden --- North-West University, South Africa Sebastiaan Rothmann --- North-West University, South Africa

This study investigated the psychosocial well-being of a group of South African families by determining the prevalence of psychosocial well-being indicators. A cross-sectional survey design and a purposive, voluntary sampling technique were used. Data on family well-being were collected from...

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The Prevalence of Well-Being on Teachers in Afri Twin Schools as Well as Non Afri Twin Schools

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Werner de Klerk --- North-West University, South Africa Q. Michael Temane --- North-West University, South Africa Alida W. Nienaber --- North-West University, South Africa

This study explored the prevalence of well-being in Afri Twin and non Afri Twin teachers. The Afri Twin project allows schools of comparable type and size in Britain and South Africa to be ‘twinned’ with each other, with a possible...

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Psychological Well-Being Among Tanzanian University Students

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Janvier Rugira --- North-West University: Potchefstroom Campus, South Africa Alida W. Nienaber --- North-West University: Potchefstroom Campus, South Africa Marié P. Wissing --- North-West University: Potchefstroom Campus, South Africa

This study explored the prevalence of levels of psychological well-being in a group of Tanzanian university students. A quantitative cross-sectional survey design was implemented for data-gathering. A convenience sample of 279 undergraduate students (19 to 40 years, mean age 29...

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Narratives on Death and Bereavement From Three South African Cultures: An Exploratory Study

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Denise Appel --- University of South Africa, Maria Papaikonomou --- University of South Africa,

The study aimed to explore how three culturally diverse South African women (n=3) constructed death and bereavement. Data were qualitatively gathered and thematically analyzed. Findings revealed grand narratives (other than western dominance) on death perceptions and bereavement within the Tswana...

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Work Related Well-Being: Burnout, Work Engagement, Occupational Stress and Job Satisfaction Within a Medical Laboratory Setting

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Kalashni Narainsamy --- University of South Africa, Sanet Van Der Westhuizen --- University of South Africa,

This study investigated work-related well-being in a medical laboratory setting. A cross-sectional survey design was used to gather data from a convenience sample of 202 medical laboratory staff (females = 35.64%; majority ethnicity = Indian). Participants completed the Burnout Inventory—General...

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A Psycho-Diagnostic Tool for Psychotherapy: Interactional Pattern Analysis (IPA)

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Charl Vorster --- North-West University, South Africa Vera Roos --- North-West University, South Africa Mari Beukes --- North-West University, South Africa

This article proposes a description of a psycho-diagnostic tool for psychotherapists, the Interactional Pattern Analysis (IPA). Sixteen interpersonal variables are proposed to describe the observable behaviour that constitutes a client's interpersonal style within the context of a particular relationship, such...

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Self-Efficacy, Collective Efficacy and the Psychological Well-Being of Groups in Transition

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Sarah M. Roos --- North-West University, South Africa Johan C. Potgieter --- North-West University, South Africa Michael Q. Temane --- North-West University, South Africa

This study sought to determine the differential influence of self- and collective efficacy beliefs on the psychological well-being of individuals within a community in transition. A cross-sectional survey design was used to collect data from 1050 Setswana speaking participants from...

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The Metric Theory of Tensor Products (Grothendieck's Résumé Revisited) Part 3: Vector Sequence Spaces

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Joe Diestel Jan Fourie Johan Swart

In this part of our exposition and expansion of Grothendieck's work on the metric theory of tensor products we look at the behaviour of the injective and surjective tensor norms in the case where one of the component spaces is...

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On the Relationship Between Several Basic Categories in Fuzzy Topology

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Dexue Zhang

In this paper, a process, which associates with every fibre-small topo- logical category A and every completely distributive lattice L another topological category called the co-tower extension of A, is introduced to investigate the relationship between several basic categories in...

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Striking differences between ZF and ZF+weak choice in view of metric spaces

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Horst Herrlich Kyriakos Keremedis Eleftherios Tachtsis

Well-known properties held by metric spaces with the countable chain condition (ccc) such as separability, second countability, Lindelöf, paracompactness may fail in the absence of the axiom of choice AC. In the long catalogue of weak choice principles, see [10],...

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A lower bound for certain Ramsey type problems

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: N.V. Tejaswi R. Thangadurai

One of the main results in this article is to present a new and simple proof of the following theorem; The Diophantine equation a 1/y 1 + a 2/y 2 + ··· + an /y n = 0, where...

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Spectral Properties, Including Spectral Singularities, of a Quadratic Pencil of Schrödinger Operators on the Whole Real Axis

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Elgiz Bairamov Öner Çakar AllanM. Krall

We consider the Quadratic Pencil of Schr¨ odinger Operator L generated in L 2 (R) by the differential expression

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An Addendum to Popa's Paper

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: BerhaneT. Ghaim

In this note we make a few simple observations regarding examples of D. Popa (cf. [3]) concerning weakly compact operators on C[0, 1] and other related classes.

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Some Extremal Properties of Section Spaces of Banach Bundles and Their Duals, II

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Terje Hoim D.A.. Robbins

Let π : E → X be a real Banach bundle with section space Γ(π), where X is a compact Hausdorff space. We complete the characterization of weak-* and sequential weak-* points of continuity in the unit ball of Γ(π)...

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The Dual Space of an Asymmetric Normed Linear Space

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: L.M. García-Raffi Romaguera Sanchez-Pérez

Given an asymmetric normed linear space (X, q), we construct and study its dual space (X ∗ , q ∗). In particular, we show that (X ∗ , q ∗) is a biBanach semilinear space and prove that (X, q)...

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Spectral Mapping Theorems For Evolution Semigroups on Spaces of Almost Periodic Functions

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Walter Hutter Frank Räbiger

. We show that the weak spectral mapping theorem holds for evolution semigroups on spaces of periodic functions. Furthermore, we prove the spectral mapping theorem for evolution semigroups on spaces of (weakly asymptotically) almost periodic functions. The results are applied...

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A Pointfree Study of Bases For Spaces Of Minimal Prime Ideals

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Melvin Henriksen Joanne Walters-Wayland

Let C (X) denote the ring of all real-valued continuous functions on a topological space X, and mX its space of minimal prime ideals with the hull-kernel topology. It has a base consisting of clopen sets and which contains the...

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On the Difference of Orthonormal Polynomials

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: D.G. Kubayi H.P. Mashele

We establish an estimate on the difference of orthonormal polynomials for a general class of exponential weights.

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A Non-topologically Generated Hutton-lowen Uniformizable Space

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Sanjiang Li Dexue Zhang

In this note, it is shown that there exist non-topologically generated spaces which are both Lowen uniformizable and Hutton uniformizable. On the other hand, the FNS-coreflection of the Hutton unit interval I(I) is neither Lowen uniformizable nor Hutton uniformizable.

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Extension of the Dirichlet-Jordan Convergence Criterion for Exponential Weights

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: H.P. Mashele

The well-known Dirichlet-Jordan Criterion for Fourier series states that the trigonometric Fourier series of a 2π periodic function f having bounded variation converges to ½[f(x + 0) + f(x – 0)] for every x and this convergence is uniform on...

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On the duality problem for weakly compact, strictly singular operators

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Manuel González

We show that there exists a weakly compact, strictly singular operator T such that the conjugate operator T * is not strictly cosingular. This example gives a negative answer to an old question of Pełczyński.

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The Galois Approach to Uniform Structures

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Maria João Ferreira Jorge Picado

Entourages in uniform spaces, being binary relations, may be easily described by polarities (i.e. Galois connections between power sets) and axialities (i.e. residuated pairs between power sets). Here we consider this in the pointfree context of the category of frames,...

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Function spaces and d-separability

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: VladimirV. Tkachuk

The object of this paper is to study when a function space is d-separable, i.e., has a dense σ-discrete subspace. Several sufficient conditions are obtained for C p(X) to be d-separable; as an application it is proved that C p(X)...

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On rings generating supernilpotent and special atoms

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: H. France-Jackson N.J. Groenewald

We study prime rings which generate supernilpotent (respectively special) atoms, that is, atoms of the lattice of all supernilpotent (respectively special) radicals. A prime ring A is called a **-ring if the smallest special class containing A is closed under...

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Decomposability and uniform integrability in Pettis integration

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: C. Godet-Thobie B. Satco

In this paper, we give several characterizations of decomposable subsets of the space of Pettis integrable functions (in particular, a characterization similar to that already known in the Bochner integrability setting). We also introduce the notion WPUI of uniform integrability,...

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A note on localized directional weak lower semi-continuity

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: E. Brüning

In minimization problems for functionals f : M → R, M ⊆ E a subset of some infinite dimensional Banach space E, we typically have to rely on weak (sequential) lower semi-continuity of f on the whole space E even...

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Operator valued integral multiplier functions

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: JanH. Fourie IlseM. Schoeman

In recent years, several papers were devoted to the study of (p, q)-summing sequences of operators and their applications in the theory of Banach spaces. In the present paper we initiate a similar study of "integral multiplier functions", thereby introducing...

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Sequences of measures on atomic subalgebras of P(N)

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Antonio Aizpuru Antonio Gutiérrez-Dávila

A vector form of Phillips' theorem, for atomic Boolean algebras with countably many atoms, is given. As a consequence we obtain a new characterization of weak compact sets of σ-additive measures.

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On a Weaker Form of Countable Compactness

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Maddalena Bonanzinga Filippo Cammaroto MikhailV. Matveev

A star covering property which is equivalent to countable compactness for regular spaces and weaker than countable compactness for Hausdorff spaces is introduced and considered. Various kinds of irregularity of topological spaces are discussed.

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Hwang's Quasi-Power-Theorem in Dimension Two

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Clemens Heuberger

In a frequently used theorem, H.K. Hwang proved convergence rates for the central limit theorem of a class of random variables whose moment generating function has a "quasi-power" structure. We generalise this result to random vectors of two variables.

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Bi-Alexandroff spaces

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Phethiwe Matutu

Bi-Alexandroff spaces are defined as extensions of Alexandroff spaces. Urysohn's lemma for bi-Alexandroff spaces is used to show that upper and lower cozero sets of bitopological spaces are bi-Alexandroff spaces. An adjunction between bi-Alexandroff spaces and pairwise completely regular bitopological...

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On tangent cones of Frölicher spaces

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: B. Dugmore P.P. Ntumba

Tangent spaces, tangent cones, invertible pairs, and various other notions common to differential geometry are defined for Frölicher spaces in a natural way and seen to coincide with their counterparts for smooth finite dimensional manifolds. The geometry of the wedge...

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ON THE SPECTRUM OF A SINGULAR HAMILTONIAN SYSTEM, II

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: D.B. Hinton --- Department of Mathematics, J.K. Shaw --- Department of Mathematics Virginia Tech,

In this paper we connect the pole structure of the Titchmarsh-Weyl m-coefficients with the spectrum of a Hamiltonian system which is singular at each end of an interval. Characterizations are given for the resolvent set, point spectrum, continuous spectrum and...

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IS THE CONSTRUCT OF L-TOPOLOGICAL SPACES A CO-TOWER EXTENSION OF SOME SIMPLER CONSTRUCT?

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Horst Herrlich --- Fachbereich 3, Mathematik, University of Bremen, Bremen, Germany, Dexue Zhang --- Department of Mathematics, Sichuan University, Chengdu, China,

In an earlier paper, the second author associated with any fibre-small topological construct A and any completely distributive lattice L, an extension of A, called the (L-)-co-tower extension of A. He demonstrated that many familiar constructs in fuzzy topology can...

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WELL-BOUNDED OPERATORS ON NON-REFLEXIVE BANACH SPACES II

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Qingping Cheng --- Institute of Mathematics, Hebrew University of Jerusalem, Givat-Ram, Jerusalem, Israel, Ian Doust --- School of Mathematics, University of New South Wales, Sydney, NSW, Australia,

In this paper we examine the relationship between the various subclasses of well-bounded operators. Although some of these subclasses have been shown to coincide on certain families of Banach spaces, we show here that apart from these previously known cases,...

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BOUNDED SUBSETS AND WEAK REALCOMPACTNESS CONDITIONS

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: S. Kundu --- Department Of Mathematics, Indian Institute of Technology, Delhi, New Delhi, India, A. B. Raha --- Stat-Math Division, Indian Statistical Institute, Calcutta, India, M. A. Swardson --- Department of Mathematics, Ohio University, Athens, Ohio, USA,

A subset A of X is bounded if every continuous real-valued function on X is bounded on A. A completely regular Hausdorff space X is said to have the bz-property if every bounded subset of X is contained in a...

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UG-Differentiability Entails Hahn-Banach

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Marianne Morillon --- ERMIT, Département de Mathématiques et Informatique, France

Denoting by ACN the countable axiom of choice, we show in ZF+AC N that the dual ball of a uniformly Gâteaux-differentiable normed space is compact in the weak* topology.In ZF, we prove that this dual ball is (closely) convex-compact in...

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Locally convex cones and the Schröder-Simpson theorem

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Klaus Keimel --- Fachbereich Mathematik, Germany

This paper paper has two goals: Firstly, to present the conceptual proof of the Schröder-Simpson theorem. The Schröder-Simpson theorem is stated in terms of domain theory and uses directed complete partially ordered cones and Scott-continuous maps. These structures are used...

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Schur spaces and weighted spaces of type H ^∞

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Alejandro Miralles --- Instituto Universitario de Matemáticas y Aplicaciones de Castelló (IMAC), Departamento de Matemáticas, Spain

We extend some results related to composition operators on H υ(G) to arbitrary linear operators on H υ0(G) and H υ(G). We also give examples of rank-one operators on H υ(G) which cannot be approximated by composition operators.

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On the solutions of the exponential Diophantine equation a ^x + b ^y = (m ² + 1)^z

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Bo He --- Department of Mathematics, P.R. China Alain Togbé --- Mathematics Department, USA Shichun Yang --- Department of Mathematics, P.R. China

In this paper, we consider the Diophantine equation a x + b y = c z . Combining Laurent's result on lower bounds for linear forms in two logarithms, Bugeaud's result on upper bounds for the p-adic...

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Superposition operators between weighted spaces of analytic functions

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Christopher Boyd --- School of Mathematical Sciences, Ireland Pilar Rueda --- Departamento de Análisis Matemático, Facultad de Matemáticas, Spain

We study the existence and the continuity of superposition operators between weighted spaces of holomorphic functions in terms of the weights.

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'Kusvika taparadzaniswa nerufu' (Until death do us part)

Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: N Spark-du Preez B Zaba C Nyamukapa M Mlilo S Gregson

A cross-sectional study of 7 667 non-virgins between 15 and 54 years of age was carried out to assess the protective effect of marriage against HIV acquisition in a rural population in Zimbabwe, whilst taking into account gender-differentials in risk...

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The impact of participatory and non-participatory evaluations on meeting project objectives

Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Mercy Niba J Maryann Green

This study investigates the value of participation on meeting a project's objectives by comparing the impact of participatory and non-participatory evaluation frameworks. We assessed HIV/AIDS projects that shared similarities in terms of objectives and implementation strategies, but differed in their...

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Childcare in poor urban settlements in Swaziland in an era of HIV/AIDS

Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Lynne Jones

This paper explores the role of the family in caring for orphans and other children in poor urban communities having some of the highest levels of HIV/AIDS prevalence in the world. A range of family forms in Swaziland was found...

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Positioning children and institutions of childcare in contemporary Uganda

Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Catrine Christiansen

Currently more than half the population of Uganda is under 18 years — a demographic dispensation caused by civil war, poverty, high fertility rates, and the AIDS epidemic. Drawing upon ethnographic research in south-eastern Uganda, the study analyses the difficulties...

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Relationships, partnerships and politics in the lives of the urban poor in AIDS-afflicted Swaziland

Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Lynne Jones

This paper seeks to better understand how poor urban families caring for children are able to access help from beyond the kinship group in a setting where HIV prevalence has risen to over 40%. The fieldwork shows that livelihoods were...

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'We will eat when I get the grant': negotiating AIDS, poverty and antiretroviral treatment in South Africa

Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Suzanne Leclerc-Madlala

The maturing HIV epidemic has led to a decline in the health status of many South Africans. One result is an increasing number of AIDS-affected poor who qualify for a government disability grant. Recent research has drawn attention to the...

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Reconceptualising vulnerable children by acknowledging their assets

Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Irma Eloff Liesel Ebersöhn Jeandré Viljoen

We report on a study that sought to find alternative pathways to conceptualising vulnerable children. We have extracted a section from a longitudinal study that focuses on the ways in which vulnerable children in a rural community in South Africa...

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Influence of gender, self-consciousness and stigmatisation on perceived acceptance among people living with HIV in Nigeria

Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: CatherineO Chovwen Mpang Ita

This study investigates the influence of perceived acceptance of people living with HIV in Nigeria. The results reveal that gender and public self-consciousness jointly and significantly influenced an individual's perception of acceptance. Also, males with a high level of private...

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Predicting the social consequences of orphanhood in South Africa

Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Rachel Bray --- Centre for Social Science Research, Leslie Social Science Building, Upper Campus, South Africa

This paper examines and questions the predictions found in the academic and policy literature of social breakdown in southern Africa in the wake of anticipated high rates of orphanhood caused by the AIDS epidemic. Analysis of the logic underlying these...

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Secrecy, stigma and HIV/AIDS: An introduction

Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Graeme Reid --- , South Africa Liz Walker --- , South Africa

This paper situates the articles selected for this special issue of AJAR within the context of the Sex and Secrecy conference, from which they emerged and within the discourse of secrecy. Secrecy and silence which have characterised the HIV/AIDS epidemic...

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Bereavement, silence and culture within a peer-led HIV/AIDS-prevention strategy for vulnerable children in South Africa

Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Ingrid Van der Heijden --- Child, Youth, Family and Social Development Research Programme, South Africa Sharlene Swartz --- Child, Youth, Family and Social Development Research Programme, South Africa

In addressing the psychosocial effects of the HIV and AIDS pandemic among vulnerable children, the issue of bereavement appears inadequately addressed. Amid the global discourse on children orphaned and made vulnerable by HIV and AIDS, this paper explores how cultural...

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Positive care? HIV and residential care for children in South Africa

Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Susan Moses --- , South Africa Helen Meintjes --- , South Africa

Responses to the HIV epidemic leading to an increase in the number of residential care facilities for children across sub-Saharan Africa have prompted concerns that large numbers of orphaned children are being placed in institutional care. There is little empirical...

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HIV/AIDS fatalism, beliefs and prevention indicators in Gabon:comparisons between Gabonese and Malians

Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: RosannaF Hess --- , United States Martin Mbavu --- , United States

HIV/AIDS fatalism may impact on individuals’ health-seeking behaviour and HIV-prevention efforts. This descriptive study measured levels of HIV/AIDS fatalism and documented HIV/AIDS beliefs and practices among a sample of Gabonese and Malians living in Gabon, West Africa. The Powe Fatalism...

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Courting success in HIV/AIDS prevention: the challenges of addressing aconcentrated epidemic in Senegal

Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: EllenE Foley --- , United States Rokhaya Nguer --- , Senegal

This article presents findings from a study of HIV/AIDS programmes for urban sex workers in Dakar, Senegal. The objective of the research was to assess HIV prevention and treatment efforts to date, and to identify challenges that must be overcome...

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Exploring the role of cognitive and structural forms of social capital in HIV/AIDS trends in the Kagera region of Tanzania – a grounded theory study

Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Gasto Frumence --- Department of Development Studies, Tanzania Malin Eriksson --- Department of Public Health and Clinical Medicine, Sweden Lennarth Nystrom --- Department of Public Health and Clinical Medicine, Sweden Japhet Killewo --- Department of Biostatistics and Epidemiology, Tanzania Maria Emmelin --- Department of Public Health and Clinical Medicine, Sweden

The article presents a synthesis of data from three village case studies focusing on how structural and cognitive social capital may have influenced the progression of the HIV epidemic in the Kagera region of Tanzania. Grounded theory was used to...

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Analysis of factors associated with failure to return for an HIV-test result in The Gambia

Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Catherine Sesay --- Department of Psychology, School of Arts and Science, The Gambia Li-Yin Chien --- , Taiwan

Knowing one's HIV status is fundamental to the prevention and treatment of HIV and AIDS. However, HIV prevention is defeated if individuals who opt to be tested fail to return for their test result. Despite the burden of HIV and...

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Challenges and coping strategies of orphaned children in Tanzania who are not adequately cared for by adults

Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Marguerite Daniel --- Department of Health Promotion and Development, Norway Angela Mathias --- Department of Health Promotion and Development, Norway

Orphaned children in poor rural communities sometimes have no adult who is able to care for them or else the adult caregiver is not able to provide adequate care. Tanzania remains one of the poorest countries in the world, and...

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An assessment of the health of two rivers within Harare, Zimbabwe, on the basis of macroinvertebrate community structure and selected physicochemical variables

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: C Phiri

The aim of this study was to assess and compare the water quality of the Gwebi and Mukuvisi Rivers, on the basis of selected physicochemical variables and macroinvertebrate community structure. Five sites where selected on both rivers and these were...

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The application of the Zero Emissions Research and Initiatives (ZERI) concept in an integrated industry-polyculture-farm system in Namibia: The case of Tunweni Sorghum Brewery

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: DO Okeyo

One major area dealt with by the concept of Zero Emissions Research and Initiatives (ZERI) is the utilisation of huge volumes of nutrient-rich waters from household toilets, kitchen sinks and municipal and organo-industries for integrated purposes. The arrangements at the...

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The macroinvertebrates of the Cunene River from the Ruacana Falls to the river mouth and assessment of the conservation status of the river

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: FC de Moor HM Barber-James AD Harrison CR Lugo-Ortiz

The proposed construction of a second hydroelectric power-generating dam on the Cunene (Kunene) River on the Namibia-Angola border, more than 100km downstream of the Ruacana hydroelectric power plant, will have a major influence on the aquatic biota of this river...

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An assessment of the fish population of the lower reaches of the Sanyati River, Zimbabwe

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: W Mhlanga

The fish population of the lower reaches of the Sanyati River was studied using multifilament gillnets and monthly sampling was conducted over 13 consecutive months. A total of 15 fish species belonging to seven families were collected and variations in...

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An analysis of plant species distributions on the floodplain of the Okavango River, Namibia, with respect to impacts of possible water abstraction

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: NJ Diederichs WN Ellery

The proposed abstraction of water from the Okavango River in Namibia could potentially result in significant changes in the vegetation of floodplains downstream of the abstraction point. Direct gradient analysis was used to determine the distribution of the most common...

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Beacons in the limnological landscape

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: BR Allanson

An overview is given of a number of major developments in the limnology of South Africa, Zimbabwe and Namibia. None was possible without the involvement of enthusiastic investigators who, over some 70 years, stimulated the growth of freshwater research in...

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Phylogeography of the African catfish, Chrysichthys maurus (Valenciennes, 1839)

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: J-F Agnèse

Polymorphism at 19 allozyme loci was studied in 227 individuals of the catfish, Chrysichthys maurus (Valenciennes, 1839), collected from ten populations representing nine different river basins in west Africa. Eleven of the loci studied were polymorphic. Analysis showed that populations...

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The occurrence of the tapeworm Ligula intestinalis (L.), in Barbus paludinosus from a small dam in Zimbabwe

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: M Barson BE Marshall

Cestode parasites were collected from Barbus paludinosus from Munwahuku Dam near Harare, Zimbabwe over a period of 13 months. Plerocercoids of Ligula intestinalis were found in 7.2% of the fish. The majority of the infected fish carried one parasite, with...

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Prosobranch mollusc species- and size-preferences of Sargochromis codringtonii (Cichlidae) in Lake Kariba, Zimbabwe

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: J Brodersen MJ Chimbari H Madsen

From the stomach contents of 28 wild-caught Sargochromis codringtonii from Lake Kariba the size and species of snails consumed were estimated from opercula found. An energetic cost/benefit ratio of the various sizes of the most frequent prey, Bellamya capillata, was...

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The biology of Barbus mattozi Guimaraes (Teleostei, Cyprinidae) in a Zimbabwean reservoir. 3. Numbers, biomass and mortality

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: BG Donnelly BE Marshall

The population of B. mattozi in the Mtsheleli Dam, Zimbabwe, was estimated to be about 55 000 fish in July 1974 but fell to about 370 by June 1975. The total biomass followed a similar trend, reaching 2 000kg (43kg...

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Hydraulic loading, stability and water quality of Nakivubo wetland, Uganda

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: J Kyambadde F Kansiime L Gumaelius G Dalhammar

Nakivubo wetland, which has performed tertiary water treatment for Kampala city for the past 40 years, is ecologically stressed by agricultural and infrastructural developments. Field studies were carried out to assess the hydraulic loading, pollution profile, stability and water quality...

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The biology of Barbus mattozi Guimaraes (Teleostei: Cyprinidae) in a Zimbabwean reservoir 4: Reproduction

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: BG Donnelly BE Marshall

Spawning of Barbus mattozi in the Mtsheleli Dam, Zimbabwe, is highly seasonal and timed to take place with the first floods. In December 1974, the Mtsheleli River flooded after heavy rain and the entire adult population of B. mattozi migrated...

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Preliminary testing of the Integrated Habitat Assessment System (IHAS) for aquatic macroinvertebrates

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: DeanJ Ollis Charles Boucher HelenF Dallas KarenJ Esler

Preliminary testing of the Integrated Habitat Assessment System (IHAS), a widely-used aquatic macroinvertebrate habitat assessment method in South Africa, was undertaken. Based on the sensitivity of the South African Scoring System (SASS) to biotope availability and assuming that SASS Scores...

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Towards the development of a macroinvertebrate sampling technique for palustrine wetlands in South Africa: a pilot investigation in the KwaZuluNatal midlands

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Rebecca Bowd DonovanC Kotze CraigD Morris NevilW Quinn

A study was undertaken in November 2003 to derive a suitable sampling technique for collecting a representative sample of aquatic macroinvertebrates from a selected emergent vegetation biotope in a palustrine wetland, Melmoth Vlei, KwaZulu-Natal, South Africa. The aim was to...

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The effect of water hyacinth, Eichhornia crassipes (Martius) SolmsLaubach (Pontederiaceae), on benthic biodiversity in two impoundments on the New Year's River, South Africa

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: JohnM Midgley MartinP Hill MartinH Villet

Water hyacinth, Eichhornia crassipes (Martius) Solms-Laubach (Pontederiaceae), forms thick mats that affect water resource utilisation, but little is known about its impacts on biodiversity in aquatic ecosystems. The benthic invertebrate community and algal biomass were sampled under water hyacinth mats...

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The impact of land use on water quality of the Lwiro River, Democratic Republic of Congo, Central Africa

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: M Bagalwa

The water quality of the Lwiro River, Democratic Republic of Congo (DRC), Central Africa, was investigated on a monthly basis from December 1999–October 2000, at six stations along a hydraulic gradient from source to mouth, to evaluate the impact of...

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Testing the applicability of the SASS5 scoring procedure for assessing wetland health: a case study in the KwaZulu-Natal midlands, South Africa

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Rebecca Bowd DonovanC Kotze CraigD Morris NevilW Quinn

A study was undertaken between 29th January and 17th February 2004 to test the applicability of the South African Scoring System Version 5 (SASS5) scoring and calculation procedure in nutrient-enriched palustrine wetlands in the midlands of KwaZulu-Natal, South Africa. Four...

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The response of Cyperus papyrus (L.) and Miscanthidium violaceum (K. Schum.) Robyns to eutrophication in natural wetlands of Lake Victoria, Uganda

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: J Kipkemboi --- Department of Zoology, Kenya F Kansiime --- , Uganda P Denny --- , The Netherlands

Interrelationships between nutrient concentrations and aerial biomass, root numbers, length and rhizomes size in Cyperus papyrus (L.) (papyrus) and Miscanthidium violaceum (K. Schum.) Robyns (synonymous to Miscanthus violaceus (K. Schum) Pilg.) were established in five different wetlands around the northern...

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Food web structure in three contrasting estuaries determined using stable isotope (∂¹³C) analysis

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: PW Froneman --- Department of Zoology and Entomology, South Africa

Food web structure in three contrasting estuaries, the freshwater-deprived Kariega, the freshwater-dominated Great Fish River and the temporarily open/closed Kasouga estuary, along the south-east coast of southern Africa was investigated in summer (1–4 November) 2000 by employing stable carbon (∂13C)...

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The cost of water hyacinth control in South Africa: a case study of three options

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: E van Wyk --- , South Africa BW van Wilgen --- , South Africa

The aquatic plant water hyacinth (Eichhornia crassipes) was first recorded in South Africa during the early part of the 20th century. The plant has since spread across the country and is found in water bodies in both sub-tropical and temperate...

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The distribution and relative abundance of stream fishes in the upper Manyame River, Zimbabwe, in relation to land use, pollution and exotic predators

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: B Gratwicke --- Department of Biological Sciences, Zimbabwe BE Marshall --- Department of Biological Sciences, Zimbabwe T Nhiwatiwa --- Department of Biological Sciences, Zimbabwe

A survey of the upper Manyame River catchment, middle Zambezi system, Zimbabwe, yielded a total of 22 fish species from 48 stations. The most widespread species (present at >20 stations) were Marcusenius macrolepidotus, Barbus paludinosus, Labeo cylindricus, Clarias gariepinus and...

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The biology of Barbus mattozi Guimaraes (Teleostei: Cyprinidae) in a Zimbabwean reservoir. 2. Growth

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: BG Donnelly --- Department of National Parks and Wildlife Management, Zimbabwe BE Marshall --- Department of Biological Sciences, Zimbabwe

The growth of Barbus mattozi was investigated in the Mtsheleli Dam, a small Zimbabwean reservoir. Scale rings were found to be a suitable method of determining growth, the rings being laid down in October, just before the rainy season. There...

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River and wetland classifications for freshwater conservation planning in KwaZulu-Natal, South Africa

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: NA Rivers-Moore --- Ezemvelo KZN Wildlife, South Africa PS Goodman --- Ezemvelo KZN Wildlife, South Africa

To provide the foundation for a freshwater conservation plan for KwaZulu-Natal, three-level hierarchical river and wetland type classifications, based on spatio-temporal scaling relationships, are proposed. This resolution of classification is appropriate for regional- or provincial-scale conservation planning. The hierarchical structure...

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Human impacts on hydrological health and the provision of ecosystemservices: a case study of the eMthonjeni–Fairview Spring Wetland, Grahamstown, South Africa

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: M Sinchembe --- Department of Environmental Science, South Africa WN Ellery --- Department of Environmental Science, South Africa

Wetland hydrological health and the provision of indirect ecosystem services in the eMthonjeni–Fairview Spring Wetland, Grahamstown, South Africa, were assessed in 2008, using the newly developed wetland assessment tools WET-Health and WET-EcoServices. Variation in health and ecosystem services were assessed...

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The influence of biotope and sampling method on the assessment of the invertebrate community structure in endorheic reed pans in South Africa

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: AR de Klerk --- Centre for Aquatic Research, Department of Zoology, South Africa V Wepener --- Centre for Aquatic Research, Department of Zoology, South Africa

Reed pans in the Mpumalanga Lakes District, South Africa, support an abundant diversity and richness of aquatic macroinvertebrates in a variety of different biotopes which, in the case of depressional wetlands such as reed pans, are not well studied. This...

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A vegetation-based hierarchical classification for seasonally pulsed floodplains in the Okavango Delta, Botswana

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: M Murray-Hudson --- , Botswana F Combs --- , Botswana P Wolski --- , Botswana MT Brown --- , USA

A classification scheme is presented for seasonal floodplains of the Boro-Xudum distributary of the Okavango Delta, Botswana. This distributary is subject to an annual flood-pulse, the inundated area varying from a mean low of 3 600 km2 to a mean...

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Assessment of heavy metal accumulation in Anzali wetland, Iran, using a submerged aquatic plant, Ceratophyllum demersum

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: AR Pourkhabbaz --- Department of Environmental Sciences, Faculty of Agriculture, Iran HR Pourkhabbaz --- Department of Environment, Faculty of Natural Resources, Iran T Khazaei --- Department of Environmental Sciences, Faculty of Agriculture, Iran S Behravesh --- Department of Environmental Sciences, Faculty of Agriculture, Iran M Ebrahimpour --- Department of Environmental Sciences, Faculty of Agriculture, Iran

The objective of this study in 2009 was to examine whether levels of cadmium (Cd), copper (Cu), zinc (Zn), lead (Pb) and chromium (Cr) were higher in the leaves than in the stems of a submerged aquatic plant Ceratophyllum demersum...

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Spatial and temporal variations in densities of small fishes across different temporary floodplain types of the lower Okavango Delta, Botswana

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: N Siziba --- , Botswana MJ Chimbari --- , Botswana K Mosepele --- , Botswana H Masundire --- Department of Biological Sciences, Botswana

Small-sized and juvenile fishes as well as physicochemical water parameters in various primary, secondary and rarely flooded temporary floodplains of the Okavango Delta were assessed during the different hydrological phases of the 2009–2010 flooding season. Small fishes were sampled in...

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Heavy metal concentrations in the water of the Nyl River system, South Africa

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: R Greenfield --- Department of Zoology, South Africa JHJ van Vuren --- Department of Zoology, South Africa V Wepener --- Department of Zoology, South Africa

The Nyl River floodplain, a Ramsar site that provides habitat for a number of endangered species, is one of the jewels in the arid Limpopo province and thus its conservation and protection are vitally important. Very little work has been...

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Zooplankton abundance and composition in the hypertrophic Rietvlei Dam, South Africa, negate prospects for its remedial ‘top-down’ biomanipulation

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: RC Hart --- School of Life Sciences, South Africa

Crustacean zooplankton abundance and composition were determined at one offshore and three nearshore sites in the hypertrophic Rietvlei Dam on 19 dates between July 2009 and December 2011. Total biomass fluctuated seasonally, generally declining from spring to winter through the...

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Controls on the formation of Wakkerstroom Vlei, Mpumalanga province, South Africa

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: R Joubert --- Department of Environmental Science, South Africa WN Ellery --- Department of Environmental Science, South Africa

The present study investigated controls on the formation of Wakkerstroom Vlei, an ∼1 000 ha unchannelled valley-bottom wetland on the South African Highveld. Along the uppermost and lowermost reaches of the wetland, where dolerite outcrops occur along the main valley,...

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Variations and changes in habitat, productivity, composition of aquatic biota and fisheries of the Kyoga lake system: lessons for management

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: R Ogutu-Ohwayo --- National Fisheries Resources Research Institute, Uganda K Odongkara --- National Fisheries Resources Research Institute, Uganda W Okello --- National Fisheries Resources Research Institute, Uganda D Mbabazi --- National Fisheries Resources Research Institute, Uganda SB Wandera --- National Fisheries Resources Research Institute, Uganda LM Ndawula --- National Fisheries Resources Research Institute, Uganda V Natugonza --- National Fisheries Resources Research Institute, Uganda

The Kyoga lake system, which is c. 4 m deep, originally had a diverse fish fauna, extensive macrophytes and wetlands. Most (82%) of its water comes from Lake Victoria, is controlled through three dams and has a short residence time...

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The effects of fire on wetland structure and functioning

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: DC Kotze --- School of Agriculture, Earth and Environmental Sciences, South Africa

Fire is an extensively used wetland management tool in both tropical and temperate areas, but its effects on wetlands are not well understood. The purpose of this paper is to review the effects of fire on wetland hydrology, biogeochemical cycling...

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Survival rates in West African savanna birds

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: MattC Stevens --- School of Biology, UK Ulf Ottosson --- AP Leventis Ornithological Research Institute, Nigeria Ross McGregor --- , UK Miriam Brandt --- , Germany Will Cresswell --- School of Biology, UK

Despite widespread interest in life histories and the comparison of parameters between tropical and temperate regions, there are still relatively few multispecies studies assessing annual survival in Afrotropical species. We used data from systematic mist-netting of savanna birds in Nigeria,...

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Nest characteristics of Yellow-billed Kites Milvus aegyptius in the Manambolomaty Lakes Complex, western Madagascar

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Tolojanahary Andriamalala --- , Madagascar Lily-Arison Rene de Roland --- , Madagascar Marius Rakotondratsima --- , Madagascar Gilbert Razafimanjato --- , Madagascar Russell Thorstrom --- , USA

We studied the nesting biology of Yellow-billed Kites Milvus aegyptius in the Manambolomaty Lakes Complex of western Madagascar during 2002 and 2003. We recorded 64 nesting attempts. In 2003, 33% (n = 39 nests) of the occupied nests were from...

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Habitat preferences of Helmeted Guineafowl Numida meleagris in the Krugersdorp Game Reserve, Gauteng province, South Africa

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: JohannH van Niekerk --- Department of Environmental Sciences, South Africa

Field surveys were conducted in the Krugersdorp Game Reserve, Gauteng province, South Africa, during 1978–1981 to study the habitat preferences of Helmeted Guineafowl Numida meleagris. The study area was traversed with a vehicle in the late afternoons on a set...

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Status and breeding ecology of the Common Moorhen Gallinula chloropus in Algeria

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Farrah Samraoui --- Laboratoire de Recherche et de Conservation des Zones Humides, Algeria AhmedH Alfarhan --- Center of Excellence for Research in Biodiversity, Saudi Arabia Boudjéma Samraoui --- Laboratoire de Recherche et de Conservation des Zones Humides, Algeria

The status of the Common Moorhen Gallinula chloropus in Algeria and its breeding ecology in North Africa are reported for the first time. Nest site selection and breeding parameters were studied at two contrasting sites in north-east Algeria: Boussedra, an...

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The sociality of nesting in Rüppell's Weaver Ploceus galbula and the Lesser Masked Weaver Ploceus intermedius in an Ethiopian acacia woodland

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: David C Lahti --- Department of Biology, Queens College, USA

Rüppell's Weaver Ploceus galbula and the Lesser Masked Weaver Ploceus intermedius nest prominently in the Awash National Park, Ethiopia. In both species the sociality or degree of aggregation of their nesting is varied. Rüppell's Weaver can nest singly or in...

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CCA—treated Laminated Railway Sleepers and Telephone Cross-arms

Item type: Journal Article • Journal: South African Forestry Journal • Authors: W.E. Conradie --- Council for Scientific and Industrial Research,

A non-conventional process for the manufacturing of laminated pine railway sleepers and telephone cross-arms, involving the treatment of laminations with copper-chrome-arsenic (CCA) preservatives before gluing and assembly, was investigated.

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Subtropical Ferns Do Not Restrict the Growth of Pines

Item type: Journal Article • Journal: South African Forestry Journal • Authors: B.V. Bredenkamp --- ,

A pilot trial to ascertain whether an invasive fern, Stenochlaena tenuifolia (Blechnaceae), has a measurable influence on volume increment of Pinus elliottii in Zululand is described. No such influence was detected.

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Detection of land cover changes around Lake Mutirikwi, Zimbabwe, based on traditional remote sensing image classification techniques

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: T Dube --- Discipline of Geography, School of Agricultural, Earth and Environmental Sciences, South Africa W Gumindoga --- Department of Civil Engineering, Zimbabwe M Chawira --- Zimbabwe Environmental Law Association, Zimbabwe

Land cover changes around Lake Mutirikwi in 1984–2011 were mapped from Landsat images using traditional image classification methods including the maximum likelihood classifier algorithm. The possibility of mapping the coverage and abundance of surface floating aquatic weeds was also tested...

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A SYSTEM DYNAMICS MODEL OF PART OF THE PONGOLO RIVER FLOODPLAIN: DEVELOPMENT AND WATER MANAGEMENT POLICY ANALYSIS

Item type: Journal Article • Journal: Southern African Journal of Child and Adolescent Mental Health • Authors: A.K. Drewes --- ,

The issue of allowing the timing, duration and magnitude of a flood release to be determined by man has led to a wide spectrum of viewpoints as to which values of these parameters are most suitable for the Pongolo River...

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Hydromedusae Off the Orange River Mouth, Southern Africa

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: C. Sparks M. J. Gibbons

A total of 242 zooplankton samples from the upper 100 m of the water column was collected discontinuously from March 1997 to January 1999 off the Orange River mouth on the west coast of southern Africa. Six species of hydromedusae...

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Quantification and representation of potential spatial interactions in the southern Benguela ecosystem

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: L. Drapeau L. Pecquerie P. Fréon L. J. Shannon

This work explores the potential spatial interactions between 13 key commercial species of the southern Benguela ecosystem: sardine Sardinops sagax, anchovy Engraulis encrasicolus, round herring Etrumeus whiteheadi, horse mackerel Trachurus trachurus capensis, chub mackerel Scomber japonicus, chokka squid Loligo vulgaris...

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Seasonal and spatial variability of dominant copepods along a transect off Walvis Bay (23°S), Namibia

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: FC Hansen RR Cloete HM Verheye

The study provides the first quantitative analysis of changes in zooplankton abundance and community structure in the Walvis Bay area, off Namibia, over a full seasonal cycle (February–December 2000). Zooplankton was collected monthly along a 90-nautical-mile transect. Calanoid copepods were...

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Sharks caught in the protective gill nets off KwaZulu-Natal, South Africa. 10. The dusky shark Carcharhinus obscurus (Lesueur 1818)

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: SFJ Dudley G Cliff MP Zungu MJ Smale

Between 1978 and 1999, a total of 5 626 dusky sharks Carcharhinus obscurus, constituting 20% of the total shark catch, was caught in the protective nets off KwaZulu-Natal, South Africa. The mean annual catch was 256 sharks (SD = 107.5,...

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Epipelagic siphonophores off the east coast of South Africa

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: D Thibault-Botha MJ Gibbons

This work represents the first systematic analysis of the common Siphonophora from the Agulhas Current (South-West Indian Ocean). A total of 56 species of siphonophores was collected from a series of three largely epipelagic cruises between Algoa Bay and the...

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Distribution of nutrients, chlorophyll and phytoplankton primary production in relation to hydrographic structures bordering the Benguela-Angolan frontal region

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: N Wasmund H-U Lass G Nausch

The aim of this study was to determine the characteristic rates of phytoplankton production in water bodies bordering the Benguela-Angolan frontal region and differing in their hydrographic, hydrochemical and biological properties. Two cruises were undertaken in the vicinity of the...

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Oiled and injured African penguins Spheniscus demersus and other seabirds admitted for rehabilitation in the Western Cape, South Africa, 2001 and 2002

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: NJ Parsons LG Underhill

Following the Treasure oil spill incident in 2000 in which 19 000 African penguins Spheniscus demersus were oiled, there were no large spills in either 2001 or 2002. In spite of this, the Southern African Foundation for the Conservation of...

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Wintering seabirds in West Africa: foraging hotspots off Western Sahara and Mauritania driven by upwelling and fisheries

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: CJ Camphuysen J van der Meer

Cold-water upwelling supports abundant and diverse faunas. Upwelling off Mauritania has been highlighted as being important for seabirds, but very few systematic offshore surveys have been conducted in that region. Mauritanian waters are increasingly targeted by commercial fisheries along the...

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The reproductive biology of Diplodus argenteus (Sparidae) in the coastal upwelling system of Cabo Frio, Rio de Janeiro, Brazil

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: GS David R Coutinho I Quagio-Grassiotto JR Verani

The reproductive biology of the seabream Diplodus argenteus, a dominant coastal fishery species, was investigated over two consecutive seasons (2001–2002) at Cabo Frio, Brazil, a low-latitude upwelling system. The sex ratio was dominated by females (1.4:1.0) and the length-at-50% sexual...

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Characterising and comparing the spawning habitats of anchovy Engraulis encrasicolus and sardine Sardinops sagax in the southern Benguela upwelling ecosystem

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: NM Twatwa CD van der Lingen L Drapeau CL Moloney JG Field

The spawning habitats of anchovy Engraulis encrasicolus and sardine Sardinops sagax in the southern Benguela upwelling ecosystem were characterised by comparing their egg abundances with environmental variables measured concomitantly during two different survey programmes: the South African Sardine and Anchovy...

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Sharks caught in the protective gill nets off KwaZulu-Natal, South Africa. 11. The scalloped hammerhead shark Sphyrna lewini (Griffith and Smith)

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: P de Bruyn SFJ Dudley G Cliff MJ Smale

Between 1978 and 1998, a total of 3 385 scalloped hammerhead sharks Sphyrna lewini was caught in the protective nets off KwaZulu-Natal. The mean annual catch was 166 sharks (range 60–279). There was a significant decrease in catch rate with...

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Patterns in subtidal seaweed communities on coral-dominated reefs at Sodwana Bay on the KwaZulu-Natal coast, South Africa

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: RJ Anderson C McKune JJ Bolton O Declerck E Tronchin

Subtidal seaweed communities of the northern coast of KwaZulu-Natal (KZN) have not been studied before. At Sodwana Bay, we tested the hypotheses that the seaweed communities would (1) differ floristically with depth, (2) be more species-rich in shallower water, (3)...

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A demonstration of the hydrographic partition of the Benguela upwelling ecosystem at 26°40'S

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: CM Duncombe Rae

Continuous CTD data from a series of recent cruises show that the distribution of the water mass characteristics in the central Benguela region from the Orange River mouth (28°38'S) to alvis Bay (22°57'S) is discontinuous in the central and intermediate...

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Life strategies, energetics and growth characteristics of Calanoides carinatus (Copepoda) in the Angola-Benguela frontal region

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: HM Verheye W Hagen H Auel W Ekau N Loick I Rheenen P Wencke S Jones

Rates of daily egg production, moulting and egg hatching success, as well as total lipid content and composition of Calanoides carinatus, were measured in the region of the southern Angola Curre nt SAC), the Angola-Benguela Front (ABF) and the coastal...

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Metabolic adaptations and reduced respiration of the copepod Calanoides carinatus during diapause at depth in the Angola-Benguela Front and northern Benguela upwelling regions

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: H Auel W Hagen W Ekau HM Verheye

Stage C5 copepodids and adult females of the herbivorous copepod Calanoides carinatus were sampled in the Angola-Benguela frontal region and northern Benguela upwelling area off Namibia in February–March 2002, using a multiple opening/closing net system. Respiration rates of C5s collected...

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The presence of right whales in summer on the west coast of South Africa: the evidence from historical records

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: PB Best

Conventionally, southern right whales Eubalaena australis are portrayed as spending the summer on feeding grounds in the Antarctic and the winter on breeding grounds in coastal waters of the southern continents. Historical whaling records challenge this perception in the case...

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Algal blooms in Nigerian waters: an overview

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: GA Akin-Oriola MA Anetekhai A Oriola

Awareness of harmful algal blooms (HABs) and their associated impacts is poor or lacking in the West African sub-region. Different aquatic environments in Nigeria have reportedly experienced blooms of algae either seasonally or year round, but there are no documented...

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A bloom of Dinophysis acuta in a thin layer off North-West Portugal

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MT Moita L Sobrinho-Gonçalves PB Oliveira S Palma M Falcão

Dinophysis acuta, which is responsible for diarrhetic shellfish poisoning, reached particularly high concentrations on the north-west coast of Portugal in 2003. In the Ría de Aveiro (40°41'N), the species reached a maximum concentration of 5.0 × 104 cells l−1 on...

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The nearshore advection of a toxigenic Pseudo-nitzschia bloom and subsequent domoic acid contamination of intertidal bivalves

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: NG Adams A MacFadyen BM Hickey VL Trainer

Along the coast of Washington State, USA, periods of downwelling-favourable winds increase in frequency in late summer and may advect domoic acid (DA)-producing Pseudo-nitzschia to the coast where they toxify coastal razor clams Siliqua patula. During the late summer and...

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Algicidal bacteria isolated from the surface of seaweeds from the coast of Osaka Bay in the Seto Inland Sea, Japan

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: I Imai D Fujimaru T Nishigaki M Kurosaki H Sugita

Algicidal bacteria offer a promising tool for the prevention of red tides, because they are able to play a key role in terminating blooms in coastal areas. This study details the detection of vast numbers of algicidal bacteria attached to...

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Examining the 'global spreading hypothesis' using graph theory

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: F Jordán T Wyatt

A persistent view, called the 'global spreading hypothesis', maintains that the frequency, magnitude and geographical extent of harmful algal blooms have increased in recent decades. These putative trends have been variously attributed to nutrient enrichment, climate change and inadequate databases...

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HAB outreach using multimedia: integrating ocean research and education

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: A deCharon S Etheridge T McDonnell Wysor M Sieracki

This paper highlights a few of the education and outreach products on harmful algal blooms (HABs) that have been developed at Bigelow Laboratory for Ocean Sciences, a non-profit organisation dedicated to marine biological research and education. The 'Toxic & Harmful...

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Remotely sensed variability of temperature and chlorophyll in the southern Benguela: upwelling frequency and phytoplankton response

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: SJ Weeks R Barlow C Roy FA Shillington

High-resolution (1km) satellite data from the NOAA AVHRR (Advanced Very High Resolution Radiometer) and OrbView-2 SeaWiFS (Sea-viewing Wide Field-of-view Sensor) are used to investigate the upper layer dynamics of the southern Benguela ecosystem in more detailed space and time scales...

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Sharks caught in the protective gill nets off KwaZulu-Natal, South Africa. 12. The African angel shark Squatina africana (Regan)

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: RL Shelmerdine G Cliff

Between 1980 and 2001, a total of 661 African angel sharks Squatina africana was caught in the protective nets off KwaZulu-Natal, South Africa. The mean annual catch was 30 sharks (range = 11–69, SD = 12.4), with no trend in...

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Abundance, biomass and species composition of nearshore fish assemblages in Ghana, West Africa

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: FKE Nunoo DB Eggleston CJ Vanderpuye

Many of the world's fish populations are overexploited, including Ghana's fish resources. This study examines spatio-temporal trends in fish species composition in relation to biotic, abiotic and anthropogenic factors, towards achieving better-informed management of the beach-seine fisheries. Fishery-dependent data were...

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The 26 December 2004 Sumatra tsunami recorded on the coast of West Africa

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: A Joseph JT Odametey EK Nkebi A Pereira RG Prabhudesai P Mehra AB Rabinovich V Kumar S Prabhu-Desai P Woodworth

Analysis of sea-level data obtained from the Atlantic Global Sea Level Observing System (GLOSS) sea-level station at Takoradi, Ghana, West Africa, clearly reveals a tsunami signal associated with the Mw = 9.3 Sumatra earthquake of 26 December 2004 in the...

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Birds and conservation significance of the Namib Desert's least known coastal wetlands: Baia and Ilha dos Tigres, Angola

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: RE Simmons A Sakko J Paterson A Nzuzi

The Ilha dos Tigres of Angola is the only sandy island off the coast of the 2 000km-long Namib Desert and it remains the least known coastal wetland on a desert coast rich in shorebirds. Two surveys of the Baia...

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Migration redefined? Seasonality, movements and group composition of humpback whales Megaptera novaeangliae off the west coast of South Africa

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: J Barendse --- , South Africa PB Best --- , South Africa M Thornton --- , South Africa C Pomilla --- , USA I Carvalho --- , USA HC Rosenbaum --- , USA

The migration of Southern Hemisphere humpback whales Megaptera novaeangliae between their feeding and breeding areas has thus far been considered a highly predictable and seasonal event. However, previous observations on the humpbacks that pass through the nearshore waters of the...

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Coastal oceanic climate change and variability from 1982 to 2009 around South Africa

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: M Rouault --- Department of Oceanography, Marine Research Institute, South Africa B Pohl --- Centre de Recherches de Climatologie, France P Penven --- , France

Changes and fluctuations in sea surface temperature (SST) around the South African coast are analysed at a monthly scale from 1982 to 2009. There is a statistically significant negative trend of up to 0.5 °C per decade in the southern...

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The barnacles Chirona (Striatobalanus) amaryllis (Darwin 1854) and Megabalanus coccopoma (Darwin 1854) (Crustacea, Cirripedia): two invasive species new to tropical West African waters

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: F Kerckhof --- Management Unit of the North Sea Mathematical Models, Belgium J Haelters --- Management Unit of the North Sea Mathematical Models, Belgium S Degraer --- Management Unit of the North Sea Mathematical Models, Belgium

The collection of the barnacle Chirona (Striatobalanus) amaryllis (Darwin 1954) (Crustacea, Cirripedia) from the hull of a ship that had been operating for five months in the Gulf of Guinea and off Sierra Leone triggered a closer investigation of the...

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Settlement patterns, size and growth of puerulus and juvenile rock lobster Jasus lalandii at an oyster farm in Saldanha Bay, South Africa

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: JC Groeneveld --- , South Africa CL Greengrass --- Marine Biology Research Institute, Department of Zoology, South Africa DL van Zyl --- Branch Fisheries, Department of Agriculture, Forestry and Fisheries, South Africa GM Branch --- Marine Biology Research Institute, Department of Zoology, South Africa

Trends in the abundance, size and growth of newly settled pueruli and early juveniles of the rock lobster Jasus lalandii were determined from samples obtained from mesh bags used for oyster mariculture in Saldanha Bay, South Africa. Totals of 3...

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Circulation patterns in the Delagoa Bight, Mozambique, and the influence of deep ocean eddies

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: T Lamont --- Oceans and Coasts Research, Department of Environmental Affairs, South Africa MJ Roberts --- Oceans and Coasts Research, Department of Environmental Affairs, South Africa RG Barlow --- , South Africa T Morris --- , South Africa MA van den Berg --- Oceans and Coasts Research, Department of Environmental Affairs, South Africa

An investigation of the circulation patterns and thermohaline structures in the Delagoa Bight, Mozambique, was undertaken during May 2004, August 2004, April 2005, and April 2006, using hydrographic surveys, surface drifters and satellite imagery. Hydrographic and satellite data during May...

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Surviving off junk: low-energy prey dominates the diet of African penguins Spheniscus demersus at Mercury Island, Namibia, between 1996 and 2009

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: K Ludynia --- Animal Demography Unit, Department of Zoology, South Africa J-P Roux --- Animal Demography Unit, Department of Zoology, South Africa R Jones --- Ministry of Fisheries and Marine Resources, Namibia J Kemper --- Ministry of Fisheries and Marine Resources, Namibia LG Underhill --- Animal Demography Unit, Department of Zoology, South Africa

The diet of African penguins Spheniscus demersus in Namibia consisted mainly of sardine Sardinops sagax in the 1950s. Since the collapse of pelagic fish stocks in the 1970s, birds fed mainly on bearded (pelagic) goby Sufflogobius bibarbatus, a low-energy prey...

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Cross-shelf observations of diet and diel feeding behaviour of the bearded goby Sufflogobius bibarbatus off Namibia

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: M Hundt --- Department of Biology, Norway AC Utne-Palm --- Department of Biology, Norway MJ Gibbons --- Department of Biodiversity and Conservation Biology, South Africa

The diet of the bearded goby Sufflogobius bibarbatus was studied at two 48 h stations off the Namibian coast. The inner station (120 m) was characterised by a deep layer of low-oxygen bottom water (<0.5 ml DO l−1 or <10%...

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Analysing environmental and fishing effects on a short-lived species stock: the dynamics of the octopus Octopus vulgaris population in Senegalese waters

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: M Thiaw --- , Sénégal D Gascuel --- , France D Thiao --- , Sénégal OT Thiaw --- , Sénégal D Jouffre --- , Sénégal

Short-lived species are extremely dependent on the seasonal and interannual variability of environmental conditions, and determining their stock status is often difficult. This study investigates the effects of environmental variability and fishing pressure on the stock of octopus Octopus vulgaris...

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Cyclonic eddies reveal Oegopsida squid egg balloon masses in the Agulhas Current, South Africa

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MJ Roberts --- Oceans and Coasts, Department of Environmental Affairs, South Africa T Zemlak --- Department of Integrative Biology, Canada A Connell --- , South Africa

In 2005, 2006, 2007 and 2011, distinct Oegopsida squid egg masses were observed by scuba divers on the narrow southern KwaZulu-Natal (KZN) shelf in depths of 35–50 m off the coastal resorts of Park Rynie, Pumula and Port Edward, South...

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Molecular evidence for three separate cryptic introductions of the red seaweed Asparagopsis (Bonnemaisoniales, Rhodophyta) in South Africa

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: JJ Bolton --- Botany Department and Marine Research Institute, South Africa N Andreakis --- , Australia RJ Anderson --- Botany Department and Marine Research Institute, South Africa

The red seaweed genus Asparagopsis Montagne (Bonnemaisoniales) contains two widely introduced species that are considered notorious seaweed invaders worldwide, Asparagopsis armata and A. taxiformis, both characterised by heteromorphic, diplo-haplontic life histories. To uncover cryptic introductions of Asparagopsis along the South...

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Tube-forming polychaetes enhance invertebrate diversity and abundance in sandy sediments of Mozambique, Africa

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MS Thomsen --- Marine Department, National Environmental Research Institute, Denmark MF Muth --- Department of Environmental Sciences, USA KJ McGlathery --- Department of Environmental Sciences, USA

In marine soft-bottom systems, polychaetes can increase habitat complexity by constructing rigid tubes (e.g. several onuphid species) that contrast with surrounding topographically flat sediments. These structures can provide predation refuges and increase larval settlement and thereby increase the richness and...

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Migrations of humpback whales past Cape Vidal, South Africa, and an estimate of the population increase rate (1988–2002)

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: KP Findlay --- Department of Oceanography, South Africa PB Best --- , South Africa MA Meÿer --- Department of Environmental Affairs, South Africa

Shore-based surveys of migrating humpback whales Megaptera novaeangliae were undertaken from Cape Vidal, northern KwaZulu-Natal, South Africa, each year between 1988 and 1991, and in 2002. Daily observations of migrating whale groups were carried out from an approx. 60 m-high...

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Dugong abundance and distribution in the Bazaruto Archipelago, Mozambique

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: KP Findlay --- Department of Oceanography, South Africa VG Cockcroft --- , South Africa AT Guissamulo --- , Mozambique

Despite the distribution of dugongs Dugong dugon ranging across nearshore waters of the tropical and subtropical regions of the Indian Ocean and western Pacific Ocean, their distribution in the western Indian Ocean is highly fragmented and appears to be declining...

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The seaweeds of Angola: the transition between tropical and temperate marine floras on the west coast of southern Africa

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: RJ Anderson --- Branch: Fisheries, Department of Agriculture, Forestry and Fisheries, South Africa JJ Bolton --- Botany Department and Marine Research Institute, South Africa AJ Smit --- School of Biological and Conservation Sciences, South Africa D da Silva Neto --- Departamento de Ambiente do Instituto Nacional de Investigação Pesqueira (INIP), Angola

The seaweed flora of Angola is relatively poorly known. Most of the 124 records listed for the country come from a 1974 British Natural History Museum expedition to the central and southern parts of that country. Previous biogeographic studies treated...

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Baseline assessment of high-latitude coral reef fish communities in southern Africa

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: C Floros --- , South Africa MH Schleyer --- , South Africa JQ Maggs --- , South Africa L Celliers --- , South Africa

The Western Indian Ocean (WIO) is a region where detailed coral reef fish research has been relatively limited. This study constitutes an assessment of the fish communities of seven southern African high-latitude coral reefs. The aim was to provide ichthyological...

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First record of Mesoplodon densirostris (Blainville 1817) from continental East Africa

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: S Valle --- Department of Biology and Biotechnology Charles Darwin, Italy

Blainville's beaked whale Mesoplodon densirostris is one of the most widely distributed members of the family Ziphiidae (the beaked whales). However, its exact distribution in many parts of the world remains unknown. On 24 November 2004, the partly skeletonised carcass...

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The endangered status of dugongs Dugong dugon around Mayotte (East Africa, Mozambique Channel) assessed through interview surveys

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: C Pusineri --- , France J Kiszka --- Institut du Littoral et de l'Environnement, France M Quillard --- Direction de l'Environnement et du Développement Durable, France S Caceres --- , France

The status of dugongs Dugong dugon around Mayotte in the Mozambique Channel was assessed from interviews with artisanal fishers conducted in 2007, along with the collation of opportunistic sighting information from tour operators between 2002 and 2011. In all, 106...

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Effects of deep-sea eddies on the northern KwaZulu-Natal shelf, South Africa

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: T Morris --- Bayworld Centre for Research and Education, South Africa T Lamont --- Oceans and Coasts, Department of Environmental Affairs, South Africa M J Roberts --- Oceans and Coasts, Department of Environmental Affairs, South Africa

This paper describes the westward movement of a cyclonic eddy across the Mozambique Channel and the subsequent south-westward propagation of the eddy along the east coast of South Africa and its interaction with the shelf. A hydrographic survey on 13...

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Efficacy of rights-based management of small pelagic fish within an ecosystems approach to fisheries in South Africa

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: M M Hara --- Institute for Poverty, Land and Agrarian Studies (PLAAS), South Africa

South Africa's small pelagics fishery is moving towards a management strategy using an ecosystem approach to fisheries (EAF), with rights-based management (RBM) as the key rights allocation system. While EAF strives to balance between, among others, ecological and social-economic objectives,...

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Innovative processes and products involving marine organisms in South Africa

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: J J Bolton --- Department of Biological Sciences, South Africa M T Davies-Coleman --- Department of Chemistry, South Africa V E Coyne --- Department of Molecular and Cell Biology, South Africa

The SEAChange programme, instituted in 2007 under the auspices of the South African Network for Coastal and Oceanic Research (SANCOR), included four interdependent research themes, one of which was Marine Biotechnology. Marine biotechnology is a discipline that involves both basic...

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Changes in population structure of the white grouper Epinephelus aeneus as a result of long-term overexploitation in Senegalese waters

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: W Ndiaye --- Institut Fondamental d'Afrique Noire-Cheikh Anta Diop [IFAN-CH. A. Diop], Laboratoire de Biologie et d'Ecologie des Poissons en Afrique de l'Ouest [LABEP-AO], Senegal M Thiaw --- Centre de Recherches Océanographiques de Dakar-Thiaroye [CRODT], Senegal K Diouf --- Institut Fondamental d'Afrique Noire-Cheikh Anta Diop [IFAN-CH. A. Diop], Laboratoire de Biologie et d'Ecologie des Poissons en Afrique de l'Ouest [LABEP-AO], Senegal P Ndiaye --- Institut Fondamental d'Afrique Noire-Cheikh Anta Diop [IFAN-CH. A. Diop], Laboratoire de Biologie et d'Ecologie des Poissons en Afrique de l'Ouest [LABEP-AO], Senegal OT Thiaw --- Graduate Institute of Fisheries and Aquaculture [IUPA], Senegal J Panfili --- Institut de recherche pour le développement [IRD], UMR 5119 Ecologie des systèmes marins côtiers [ECOSYM], Senegal

In Senegal, a significant decrease in catches indicates that many demersal fish stocks are being overexploited. The white grouper Epinephelus aeneus, locally known as the ‘thiof’, is exploited by both small-scale and industrial fisheries. A 28-year database of E. aeneus...

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Stock-environment recruitment analysis for Namibian Cape hake Merluccius capensis

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: P Kainge --- National Marine Information and Research Centre, Namibia N Bahamon --- Centre d'Estudis Avançats de Blanes (CEAB-CSIC), Spain CH Bartholomae --- National Marine Information and Research Centre, Namibia JN Kathena --- National Marine Information and Research Centre, Namibia AK van der Plas --- National Marine Information and Research Centre, Namibia A Gordoa --- Centre d'Estudis Avançats de Blanes (CEAB-CSIC), Spain

The factors modulating recruitment success of Cape hake Merluccius capensis in Namibian waters are still unresolved. In this study, we used generalised additive models, regression tree analysis and the conventional Ricker model to examine the effect of environmental indices and...

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Epiphytic seaweeds and invertebrates associated with South African populations of the rocky shore seagrass Thalassodendron leptocaule — a hidden wealth of biodiversity

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: CM Browne --- Department of Biological Sciences and Marine Research Institute, South Africa R Milne --- Department of Biological Sciences and Marine Research Institute, South Africa C Griffiths --- Department of Biological Sciences and Marine Research Institute, South Africa JJ Bolton --- Department of Biological Sciences and Marine Research Institute, South Africa RJ Anderson --- Department of Biological Sciences and Marine Research Institute, South Africa

Seagrasses support a great diversity of epiphytic organisms. There are no detailed published accounts of algae and animals growing on seagrasses in South Africa. The seagrass Thalassodendron leptocaule (previously known as Thalassodendron ciliatum) is unique among southern African seagrasses in...

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Composition of elasmobranch landings in Bahrain

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: ABM Moore --- RSK Environment Ltd, UK R Peirce --- Shark Conservation Society, UK

The first detailed elasmobranch fisheries data for the Kingdom of Bahrain are presented, based on surveys of fish markets in April 2012. At least 25 species were recorded, including undescribed taxa. The milk shark Rhizoprionodon acutus was the most frequently...

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Optimal BRUVs (baited remote underwater video system) survey design for reef fish monitoring in the Stilbaai Marine Protected Area

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: L De Vos --- Percy FitzPatrick Institute of African Ornithology, South Africa A Götz --- Elwandle Node, South Africa H Winker --- Marine Research Institute, Department of Biological Sciences, South Africa CG Attwood --- Marine Research Institute, Department of Biological Sciences, South Africa

Marine protected areas (MPAs) play an important role in coastal conservation, but there is presently no uniformly applied methodology for monitoring the efficacy of coastal fish protection. Whereas underwater visual census and controlled angling surveys have been used, their skilled-labour...

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Socio-economic aspects of the Sodwana Bay SCUBA diving industry, with a specific focus on sharks

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: ML Dicken --- KwaZulu-Natal Sharks Board, South Africa

Understanding socio-economic aspects of the diving industry at Sodwana Bay, including data on participant motivation and expenditure, is crucial for the effective management of the St Lucia and Maputaland marine protected areas, South Africa. Between July 2011 and July 2012...

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Investigating Disparities in Access and Returns to Endowments between Male and Female Headed Households in Cameroon

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Boniface Ngah Epo --- Department of Economics and Management, Yaoundé Francis Menjo Baye --- Department of Economics and Management, Yaoundé Nadine Teme Angele Manga --- Department of Economics and Management, Yaoundé

This paper investigates disparities in access and returns to endowments between male and female headed households in Cameroon using the Oaxaca–Blinder decomposition and the 2007 Cameroon Household Consumption Survey. In particular, synthetic variables for education and health constructed by the...

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A Rapid Solar Transition is not only Possible, it is Imperative!

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: David Schwartzman --- Department of Biology, USA Peter Schwartzman --- Department of Environmental Studies, USA

Catastrophic climate change (C3) is inevitable if carbon emissions to the atmosphere are not rapidly reduced and the now unsafe atmospheric level (400 ppm) CO2 (and rising) is not brought down by sequestration technologies to below 350 ppm. C3 prevention is possible...

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On the Links between Sustainable Wellbeing and Electric Energy Consumption

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Marcel J. Castro-Sitiriche --- Department of Electrical and Computer Engineering, Puerto Rico Mandoye Ndoye --- Electrical and Computer Engineering Department, USA

Access to electric energy is one of the drivers of wellbeing and universal access to energy has recently been identified as an important goal in the international community. A data-driven analysis of electric energy consumption and subjective wellbeing indicators is...

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Adoption of Agricultural Innovations: The Case of Improved Sweet Potato in Wedza Community of Zimbabwe

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Shakespear Mudombi --- Institute for Economic Research on Innovation (IERI), Tshwane University of Technology, South Africa

The smallholder farming sector plays an important role in agricultural production. However this sector is constrained by vulnerability to climatic variations, inadequate access to farming inputs, inappropriate technologies and limited access to markets. There have been concerted efforts by various...

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Mobile Money for Financial Inclusion: Policy and Regulatory Perspective in Zimbabwe

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Alex Bara --- Senior Economist at the Agriculture Bank of Zimbabwe, Zimbabwe

The introduction of mobile telephony and innovative technology in financial services is forcing regulators to re-evaluate their rules for financial service provision. Zimbabwe also adopted mobile financial service, and has realised rapid growth in mobile financial services. Inevitably, it has...

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Interspecific hybrids in Zimbabwe: status review and future challenges

Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: D.P. Gwaze --- , USA

Several F1 eucalypt and pine interspecific hybrids have been tested in Zimbabwe. The first hybrids tests were of pine species, and these were established in 1973. The results from these early tests were not spectacular and interest in hybrids was...

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Evaluation of methods forestimatingthe metabolic rate according to ISO 8996 in forestry work in Zimbabwe

Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors:

Forestry activities in Southern Mrica may expose forest workers to uncompensable heat stress risk when the climate conditions are such that the body experiences difficulties to dissipate its excess heat to the environment. A study was made in North Eastern...

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Weed composition in relation to site in re-established pine compartments on the Mpumalanga Escarpment, South Africa

Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: Leander Jarvel --- Sappi Forests Research: Shaw Research Centre, Robert Pallett --- Sappi Forests Research: Shaw Research Centre,

A survey of weed species distribution patterns and abundance in clearfelled pine compartments in the Mpumalanga escarpment region was undertaken to determine the relationship between weed species and cover abundance in relation to environmental and compartmental factors. In total359 transects...

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Comparative growth performance of different Casuarina species and provenance at Lushoto in the West Usambara mountains, Tanzania

Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: S. T. Mwihomeke --- Department of Forestry, South Africa P. Mwangingo --- Silviculture Research Centre, Tanzania S.M.S. Maliondo --- Department of Forest Biology, Tanzania S. Mathias --- Silviculture Research Centre, Tanzania S.A.O. Chamshama --- Department of Forest Biology, Tanzania

Variation in growth charactristics, coppicing ability and understory vegetation development was assessed in four Casuarina species (C. equisetifolia, C. junghuhniana, C. cunnighamiana and C. oligodon) grown in Lushoto in the West Usambara Mountains (WUM), Tanzania. The performance of the four...

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Some notes on the effect of wet-storage on timber

Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: F.S. Malan --- Komatiland Forests Pty Ltd, Africa

The storage of logs under water sprays has proved to be a highly effective method to preserve logs over prolonged periods against drying defects and infestation by staining fungi. Wet-storage has little effect on wood quality apart from some degradation...

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Phosphorus fertiliser source and weed control effects on growth of three-year-old second-rotation Pinus radiata on Orthic Pumice soil in New Zealand

Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: AA Rivaie --- , Indonesia P Loganathan --- Soil and Earth Sciences, Institute of Natural Resources, New Zealand

Little information is available on the interactive effects of soluble and less-soluble phosphorus (P) fertilisers and weed control on growth and P nutrition of second-rotation Pinus radiata plantations. A study was initiated on three-year-old second-rotation P. radiata and to determine...

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Nutrient fluxes in rainfall, throughfall and stemflow in Eucalyptus stands on the Zululand coastal plain, South Africa

Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: SB Dovey --- , South Africa B du Toit --- Department of Forest and Wood Science, South Africa W de Clercq --- Department of Soil Science, South Africa

Atmospheric deposition was assessed at two sites over a four-year period in post-canopy-closure (mature) Eucalyptus stands in the northern Dukuduku and southern KwaMbonambi commercial plantation forestry areas of Zululand, South Africa. The aim of this study was to determine the...

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Comparing normal, lognormal and Weibull distributions for fitting diameter data from Akashmoni plantations in the north-eastern region of Bangladesh

Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: I Kayes --- Department of Forestry and Environmental Science, School of Agriculture and Mineral Sciences, Bangladesh JC Deb --- Department of Forestry and Environmental Science, School of Agriculture and Mineral Sciences, Bangladesh P Comeau --- School of Forest Science and Management, Canada S Das --- Department of Statistics, School of Physical Sciences, Bangladesh

Statistical probability density functions are widely used to model tree diameter distributions and to describe stand structure. The objective of this study was to compare the performance of normal, logarithmic-normal and three-parameter Weibull distributions for fitting diameter data from Akashmoni...

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A model to predict productivity of different chipping operations

Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: MohammadR Ghaffariyan --- , Australia Raffaele Spinelli --- , Italy Mark Brown --- , Australia

The chipping operation is an important component of harvesting systems producing biomass and pulp chips. This paper aimed to develop a valid model to predict the productivity of chipping as part of these operations. Over a number of years more...

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Stand structure and regeneration of harvested Araucaria araucana–Nothofagus stands in central Chile

Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Rafael M Navarro-Cerrillo --- DendrodatLab, Departamento de Ingeniería Forestal, Spain Fernando Olave --- Corporación Nacional Forestal, Chile Francisco Moreno --- DendrodatLab, Departamento de Ingeniería Forestal, Spain Sergio de Miguel --- Faculty of Science and Forestry, Finland Margarita Clemente --- Departamento de Ciencias y Recursos Agrícolas y Forestales, Spain

In this study we examined the current structure and regeneration status of mixed Araucaria araucana–Nothofagus spp. stands that had been logged 20 years ago. We measured stand density of saplings, juvenile and adult trees, as well as stand basal area...

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The effectiveness of a national communication campaign using religious leaders to reduce HIV-related stigma in Ghana

Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Marc Boulay Ian Tweedie Emmanuel Fiagbey

This article describes the effects of a national mass media and community-level stigma-reduction programme in Ghana, in which national and local religious leaders urged their congregations and the general public to have greater compassion for people living with HIV or...

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Building partnerships to support community-led HIV/AIDS management: a case study from rural South Africa

Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Yugi Nair Catherine Campbell

The importance of partnerships between marginalised communities and support agencies (from the public sector, private sector and civil society) is a pillar of HIV/AIDS management policy. Such alliances are notoriously difficult to promote and sustain. We present a case study...

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Sex differentials in the use of centres for voluntary counselling and testing for HIV in Cameroon

Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Emmanuel Ngwakongnwi Hude Quan

Part of the strategic response to HIV in Cameroon, West Africa, has been the institutionalisation of voluntary testing and counselling (VCT) for HIV services across the country. The study addresses the general level of awareness and use of VCT centres...

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Diversity and mobility in households with children orphaned by AIDS in Couffo, Benin

Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: RoseC Fagbemissi --- Communication and Innovation Studies Group, Social Science Department, The Netherlands Rico Lie --- Communication and Innovation Studies Group, Social Science Department, The Netherlands Cees Leeuwis --- Communication and Innovation Studies Group, Social Science Department, The Netherlands

This paper characterises children orphaned by AIDS in the Couffo region of Benin. A 2006 census conducted for the research revealed a total of 315 such orphans, aged 0 to 14 years, within 88 households. Seventy-one percent of these children...

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The importance of interdisciplinary collaborative research in responding to HIV/AIDS vulnerability in rural Senegal

Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Roos Willems --- Department Social and Cultural Anthropology, Belgium

HIV prevalence in Senegal is less than 1%, a success generally attributed to the country's quick response to the nascent epidemic of the 1980s and its continued efforts to curtail the spread of HIV. However, as the bulk of the...

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Rural black women's agency within intimate partnerships amid the South African HIV epidemic

Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Britta Thege --- Department of Sociology, South Africa

In a particular way, the HIV pandemic exposes the prevailing gender relations and the definitions of male and female gender roles, both in intimate relationships and in the wider society. The HIV pandemic reveals the contradictions between women's legal rights...

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Algal communities associated with aquatic macrophytes in some artificial ponds in Nyando District, Kenya

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Balthazar Mpawenayo Christine Cocquyt

This study describes the algal communities of six ponds colonised by aquatic macrophytes in Nyanza Province, Kenya. Plankton samples were collected from the water column and epiphytic samples from macrophytes such as Azolla, Pistia, Nymphaea, Ipomoea and Ludwigia. Pond pH,...

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Groundwater seeps as potentially important refugia for freshwater fishes on the Eastern Shores of Lake St Lucia, KwaZulu-Natal, South Africa

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: SvenM Vrdoljak RobC Hart

The freshwater wetlands on the Eastern Shores of Lake St Lucia provide an important habitat for freshwater fishes, including a number of IUCN Red Listed species. The ecology of these wetlands is influenced greatly by water flowing from the large...

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A preliminary study of allozyme differences amongst Carcharhinus sharks from the continental slope near Abidjan, Côte d'lvoire

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Béatrice Adepo-Gourène Lounès Chikhi Jean-François Agnèse Germain Gourène Alain Hervé

Genetic variability of fifty-five shark specimens from the genus Carcharhinus was analysed using 18 allozyme loci. Sixteen loci were polymorphic either within, or between, species. Levels of genetic polymorphism, as measured by observed heterozygosity values, ranged from 0.008 (±0.008) to...

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Reproductive and feeding biology of the endangered fiery redfin, Pseudobarbus phlegethon (Barnard 1938) (Teleostei: Cyprinidae), in the Noordhoeks River, South Africa

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: A Whitehead OLF Weyl IR Bills

The aim of this study was to contribute to the knowledge on the reproductive and feeding biology of the endangered Pseudobarbus phlegethon (Barnard 1938) in the Olifants River system, by providing estimates of its maturity, reproductive periodicity and the diet...

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The impact of invasive fish and invasive riparian plants on the invertebrate fauna of the Rondegat River, Cape Floristic Region, South Africa

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: StevenR Lowe DarraghJ Woodford DeanN Impson JennyA Day

Invasive fish and plants are widespread in the rivers and riparian zones of the Cape Floristic Region of South Africa and represent potential threats to the highly endemic freshwater fauna. We investigated the impact of invasive smallmouth bass (Micropterus dolomieu)...

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The fishery for, and local distribution of, Aristeus antennatus (Risso 1816) (Crustacea: Dendrobranchiata) off western Algeria

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: S Mouffok A Kherraz D Bouras Z Boutiba

This study presents data on the local distribution and yield of red shrimp Aristeus antennatus (Risso 1816) from a new deep-water fishery on the western Algerian slope obtained from commercial trawl fisheries at Oran and Arzew ports between 1999 and...

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Effect of an impoundment on nutrient dynamics in the Kihansi River, Tanzania

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: RJ Ideva J Machiwa F Schiemer T Hein

The impact of the Kihansi Dam on electrical conductivity, pH, temperature and dissolved oxygen in the Kihansi River was assessed in 2005 after 85% of the original river flow had been diverted to the Lower Kihansi power plant. The results...

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Anaemia in the freshwater catfish Clarias albopunctatus (Teleostei: Clariidae) exposed to brewery wastewater effluent

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: NS Oluah

Haematological changes were studied in freshwater catfish Clarias albopunctatus exposed for 20 days to 25%, 50% and 100% concentrations of brewery wastewater prepared by dilution using tap water. Haemoglobin, haematocrit and erythrocyte counts in fish exposed to wastewater were significantly...

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A laboratory assessment of the potential molluscicidal potency of Jatropha curcas aqueous extracts

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: MJ Chimbari CJ Shiff

Preliminary laboratory studies were conducted to determine the molluscicidal potency of Jatropha curcas, the physic nut. Biomphalaria glabrata and Bulinus globosus snails were exposed to varying concentrations of aqueous extracts of crushed J. curcas seeds from unripe, ripe and overripe...

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Remediation of eutrophic water using Lemna minor in a controlled environment

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: AA Ansari FA Khan

The growth response of common duckweed Lemna minor was studied at various temperature and pH levels for its possible application for remediating eutrophic waters. The dry weight, chlorophyll a, nitrogen, phosphorus, potassium, peroxidase (POD), catalase (CAT) and malondialdehyde (MDA) levels...

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Growth of market-size abalone (Haliotis midae) fed kelp (Ecklonia maxima) versus a low-protein commercial feed

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: TL Francis GW Maneveldt J Venter

The growth of grow-out abalone fed on kelp, with c. 10 % dry weight protein content, was compared with that of those fed on 'Feed A' (a new low-protein commercial feed of c. 26 % protein), in a flow-through system...

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Effects of oil pollution on aquatic macroinvertebrate assemblages in Gabon wetlands

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: MR Vinson EC Dinger J Kotynek M Dethier

Macroinvertebrate assemblages from uncontaminated and contaminated sites in the Gamba Complex (Gabon) were compared, the latter sites having been subjected to ongoing oil spills since the 1970s. Vegetation communities surrounding the sites included savannah, shrub–scrub, palm forest, gallery forest and...

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The role of macroinvertebrates in the diets of the dominant fish species in Lake Nokoué, Benin

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: P Gnohossou --- Laboratoire d'Hydrobiologie et d'Aquaculture, P Laleye --- Laboratoire d'Hydrobiologie et d'Aquaculture, P Atachi --- Laboratoire d'Hydrobiologie et d'Aquaculture, J Moreau --- Laboratoire d’Agronomie, Environnement et Écotoxicologie, France

Between 2003 and 2006 the diets of 22 fish species, comprising approximately 90% of the Lake Nokoué fish biomass, were analysed. Macroinvertebrates dominated the diet of ten species, fishes were the preferential prey of six fish species, and detritus and...

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The importance of estuarine-derived carbon for the nearshore marine environment: studies on two contrasting South African estuaries

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: PD Vorwerk --- Department of Zoology and Entomology, South Africa PW Froneman --- Department of Zoology and Entomology, South Africa

The food web structure within and adjacent to two permanently open estuaries with contrasting flow regimes along the south-eastern coast of South Africa was investigated employing stable isotope analysis. The Kariega Estuary is considered a freshwater-deprived system, while the Great...

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Rapid assessment of tissue nitrogen in cultivated Gracilaria gracilis (Rhodophyta) and Ulva lactuca (Chlorophyta)

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: DV Robertson-Andersson --- Botany Department, South Africa DT Wilson --- Botany Department, South Africa JJ Bolton --- Botany Department, South Africa RJ Anderson --- Botany Department, South Africa GW Maneveldt --- Department of Biodiversity and Conservation Biology, South Africa

Tissue nitrogen content and thallus colour were quantified using a rapid assessment method based on the Pantone® matt uncoated formula guide for raft-cultivated Gracilaria gracilis Steentoft, Irvine ef Farnham at Saldanha Bay and tank-cultivated Ulva lactuca Linnaeus at Jacobsbaai in...

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Short-term variability in alongshore winds and temperature off Swakopmund, Namibia, during a non-upwelling event in 1998–1999

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: CH Bartholomae E Hagen

Swakopmund is a popular coastal resort in Namibia, especially during the summer holiday season when daily sea temperatures can fluctuate several degrees in a short period. Hourly measurements of the near-bottom water temperature were collected off the Swakopmund Jetty to...

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Non-random habitat use by coral reef fish recruits in Mafia Island Marine Park, Tanzania

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: KC Garpe MC Öhman

The habitat use by nearly 3 000 reef fish recruits, comprising 56 taxa, at seven sites in Mafia Island Marine Park, Tanzania, were examined. The study was carried out following the 1998 global coral bleaching event and all sites but...

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Decline of demersal resources in North-West Africa: an analysis of Mauritanian trawl-survey data over the past 25 years

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: D Gascuel P Labrosse B Meissa MO Taleb Sidi S Guénette

Mauritania is characterised by fast-growing fisheries that have developed over the past decades. Since 1982, scientific trawl surveys have been conducted regularly, allowing assessment of the impact of this increasing fishing pressure on exploited species as well as on demersal...

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A visual and acoustic survey for harbour porpoises off North-West Africa: further evidence of a discrete population

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: O Boisseau J Matthews D Gillespie C Lacey A Moscrop N El Ouamari

The distribution of harbour porpoises Phocoena phocoena in southern Europe and along the Atlantic African coast is poorly understood, with tentative assessments suggesting a discrete West African population with a northern limit around the Straits of Gibraltar. This study describes...

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Large-scale changes in the spatial distribution of South African West Coast rock lobsters: an overview

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: AC Cockcroft D van Zyl L Hutchings

A major shift in resource availability in the West Coast rock lobster Jasus lalandii from the traditional fishing grounds on the West Coast to the more southern fishing grounds was observed between the late 1980s/early 1990s and the turn of...

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Growth of post-weaning abalone Haliotis midae fed commercially available formulated feeds supplemented with fresh wild seaweed

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: TS Dlaza GW Maneveldt C Viljoen

The effect of five formulated feeds supplemented with fresh wild seaweed on the growth of post-weaning juvenile abalone Haliotis midae (6–20 mm shell length) was investigated by means of a growth trial at a commercial abalone farm over a period...

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Comparing internal and external drivers in the southern Benguela and the southern and northern Humboldt upwelling ecosystems

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: LJ Shannon S Neira M Taylor

Trophic models of three upwelling ecosystems, the southern Benguela (South African), southern Humboldt (Chilean) and northern Humboldt (Peruvian) systems, have been fitted to catch, abundance and fishing mortality time-series. Three drivers were considered during the model fitting: internal forcing by...

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Changes in the trophic structure of the southern Benguela before and after the onset of industrial fishing

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: KE Watermeyer LJ Shannon CL Griffiths

Despite a human presence in the Benguela region for at least one million years, exploitation of marine resources by European seafarers only began in earnest in the 1400s. Ecopath with Ecosim was used to construct and compare mass-balanced foodweb models...

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Changes in the trophic structure of the northern Benguela before and after the onset of industrial fishing

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: KE Watermeyer LJ Shannon J-P Roux CL Griffiths

Exploitation of marine resources has been occurring in the northern Benguela ecosystem for centuries. Understanding the cumulative long-term effects of this exploitation is important toward effective management of the modern system. Retrospective mass-balanced models of the ecosystem have been constructed,...

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Does vertical migratory behaviour retain fish larvae onshore in upwelling ecosystems? A modelling study of anchovy in the southern Benguela

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: C Parada C Mullon C Roy P Fréon L Hutchings CD van der Lingen

A spatially explicit individual-based model (IBM) forced by 3D temperature and current fields simulated by a hydrodynamic model of the southern Benguela upwelling region was used to test two hypotheses concerning the role of diel vertical migration (DVM) by Cape...

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Achievements and lessons learned from the Benguela Environment, Fisheries, Interaction and Training (BENEFIT) research programme

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: I Hampton N Sweijd

This paper considers the scientific achievements of the Benguela Environment, Fisheries, Interaction and Training (BENEFIT) Programme as reflected in 29 internally evaluated BENEFIT research projects carried out between 1998 and 2007 when the programme ended, and draws a number of...

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The 'fishery' in South Africa's remaining coastal stonewall fish traps

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: LV Kemp GM Branch CA Attwood SJ Lamberth

Ancient stonewall fish traps along the southern coast of South Africa, known locally as 'vywers', have both cultural and historical significance. Most have been degraded through neglect. Only two sets of vywers are actively maintained and fished, but without legal...

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Extension of PIRATA in the tropical South-East Atlantic: an initial one-year experiment

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: M Rouault J Servain CJC Reason B Bourlès MJ Rouault N Fauchereau

The Pilot (later termed Prediction) and Research Moored Array in the Tropical Atlantic (PIRATA) programme, developed as a multinational network by Brazil, France and the USA, has deployed and maintained an array of 17 Autonomous Temperature Line Acquisition Systems (ATLAS)...

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Effects of fishing on a temperate reef community in South Africa 2: benthic invertebrates and algae

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: A Götz --- , South Africa SE Kerwath --- Department of Environmental Affairs, South Africa CG Attwood --- Marine Research Institute, Department of Zoology, South Africa WHH Sauer --- Department of Ichthyology and Fisheries Science, South Africa

The effect of fishing on benthic reef communities was studied by comparing reefs within and outside the Goukamma Marine Protected Area (MPA) on the South African warm-temperate south coast. Although study sites were similar in terms of bathymetry and oceanographic...

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Use of environmental parameters to explain the variability in spawnerrecruitment relationships of Namibian sardine Sardinops sagax

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: CH Kirchner --- National Marine Information and Research Centre, Namibia CH Bartholomae --- National Marine Information and Research Centre, Namibia A Kreiner --- National Marine Information and Research Centre, Namibia

This study attempts to explain the variability in recruitment of sardine in the northern Benguela and to develop potential models by including environmental information to predict recruitment. Two different recruitment and spawner number datasets were available: a VPA-developed dataset, for...

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Variations in the dominant algal bloom-forming species in the western South China Sea from 1993 to 2007

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: CL Liu --- Key Laboratory of Tropical Marine Environmental Dynamics, and Key Laboratory of Marine Bio-resources Sustainable Utilization, China DL Tang --- Key Laboratory of Tropical Marine Environmental Dynamics, and Key Laboratory of Marine Bio-resources Sustainable Utilization, China SF Wang --- Key Laboratory of Tropical Marine Environmental Dynamics, and Key Laboratory of Marine Bio-resources Sustainable Utilization, China L Nguyen-Ngoc --- , Vietnam

The study investigated the spatial and temporal variations of harmful algal bloom (HAB) species in the western South China Sea (SCS) for the period 1993-2007, using in situ HAB and remotely sensed datasets. A significant change in the dominant bloom...

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Condensed tannins and saponin content in different plant parts of Stylosanthes scabra (Fitzroy) plants harvested from agro-ecologically different sites in Zimbabwe

Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: JJ Baloyi T Acamovic M Odoardi N Berardo NT Ngongoni H Hamudikuwanda

The objective of this study was to determine the proanthocyanidin (PA; condensed tannin) and saponin contents of different parts of Stylosanthes scabra (Fitzroy) plants harvested from five agro-ecologically different sites in Zimbabwe. Condensed tannins and saponin content of S. scabra...

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Impact of the invader Ipomoea hildebrandtii on grass biomass, nitrogen mineralisation and determinants of its seedling establishment in Kajiado, Kenya

Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: JK Mworia JI Kinyamario EA John

The invasive coloniser Ipomoea hildebrandtii aggravates the problem of inadequate grass forage in Kajiado district, Kenya. To test its impact on grass biomass, nitrogen (N) mineralisation and seedling establishment, grazing and coloniser density were controlled using experimental exclosures and weeding...

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Strongly Measurable Kurzweil-Henstock Type Integrable Functions and Series

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: V. Marraffa

We give necessary and sufficient conditions for the scalar Kurzweil-Henstock integrability and the Kurzweil-Henstock-Pettis integrability of functions f : [1, ∞) → X defined as f = ∑∞ n=1 xnχ [n,n+1). Also the variational Henstock integrability is considered.

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On some parameters related to weak noncompactness in L¹(μ,E)

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Diana Caponetti --- Department of Mathematics, Italy

A weak measure of noncompactness γU is defined in a Banach space in terms of convex compactness. We obtain relationships between the measure γU (A) of a bounded set A in the Bochner space L1 (μ,E) and two parameters Π(A)...

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Feynman's Electromagnetic Fields Induced by Moving Charges and the Existence and Uniqueness of Solutions to the N-Body Problem of Electrodynamics

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: VictorM. Bogdan --- Department of Mathematics, USA

Given n charges interacting with each other according to Feynman's law. Let (r j (t), v j (t)) denote the position and velocity of the charge q j . The list y(t) of all such vectors is...

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Convolution Operators on Spaces of Vector-Valued Functions that are Completely Continuous

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Paulette Saab --- Department of Mathematics, USA

Let X be a Banach space and let G be a compact abelian group. We study when convolution operators that are induced by a regular Borel scalar measure v on G are Completely Continuous (or Dunford-Pettis) operators (respectively, Weak-Dunford-Pettis) when...

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Individual tree growth differences in a clonal eucalypt blanking trial at four years

Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: RN Pallett TL Machaka

Achieving a well-stocked stand at time of planting is important to compartment productivity and yield in clonal eucalypt stands for pulpwood production. The window period in which individuals that replace those that died after initial planting (blanks) still contribute meaningfully...

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Regional vegetation management standards for commercial pine plantations in South Africa

Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: CA Rolando --- , New Zealand KM Little --- , South Africa

During the 1990s a number of trials were implemented in the summer rainfall region of South Africa to determine both the short- and long-term impacts of competing vegetation on pine growth. Trial sites were selected across different physiographic regions such...

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Testing the suitability of the Nepal-Somers stand table projection method for Eucalyptus grandis plantations in South Africa

Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: J Corral-Rivas --- Facultad de Ciencias Forestales, México S Sánchez Orois --- , Germany H Kotze --- , South Africa K von Gadow --- , Germany

This study presents an application of a stand table projection method for varying stand densities of Eucalyptus grandis in South Africa. The projections of diameter at breast height (dbh) class frequencies are compatible with future values of basal area and...

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Regional vegetation management standards for commercial Eucalyptus plantations in South Africa

Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: KM Little CA Rolando

During the 1990s a number of trials were implemented in the summer-rainfall region of South Africa to determine both the short- and long-term impacts of competing vegetation on eucalypt growth. Trial sites were selected across different physiographic regions such that...

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Stable isotope evidence of food web connectivity by a top predatory fish (Argyrosomus japonicus: Sciaenidae: Teleostei) in the Kowie Estuary, South Africa

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: L Bergamino --- Department of Zoology and Entomology, South Africa T Dalu --- Department of Zoology and Entomology, South Africa AK Whitfield --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa L Carassou --- Department of Zoology and Entomology, South Africa NB Richoux --- Department of Zoology and Entomology, South Africa

In this study, food web connectivity within the Kowie Estuary on the south-east coast of South Africa was evidenced by the trophic behaviour of the predominantly piscivorous Argyrosomus japonicus. We examined stable isotopes of carbon (δ13C) and nitrogen (δ15N) in...

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Estimating scavenger and search bias for collision fatality surveys of large birds on power lines in the Karoo, South Africa

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Maurice Schutgens --- DST/NRF Centre of Excellence at the Percy FitzPatrick Institute of African Ornithology, South Africa Jessica M Shaw --- DST/NRF Centre of Excellence at the Percy FitzPatrick Institute of African Ornithology, South Africa Peter G Ryan --- DST/NRF Centre of Excellence at the Percy FitzPatrick Institute of African Ornithology, South Africa

Bird collision mortality associated with power lines is a global conservation challenge, but periodic carcass counts along power lines underestimate actual mortality because of survey biases. We conducted a scavenger trial over 90 days and three observer detection trials after...

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Percentile-based Weibull diameter distribution model for Pinus kesiya stands in Benguet province, Philippines

Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Roscinto Ian C Lumbres --- Warm Temperate and Subtropical Forest Research Center, Republic of Korea Young Jin Lee --- Department of Forest Resources, Republic of Korea

This study was conducted to develop a diameter distribution model for Pinus kesiya stands in Benguet province, Philippines, using the percentile-based Weibull model. The performance of the different equations was examined using evaluation statistics such as the fit index (FI)...

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Obesity and dietary behavioural changes

Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: G Jardine --- Registered dietitian in private practice,

Obesity is a multifactorial condition involving genetic, environmental and behavioural factors. For most people wanting to lose weight, little can be done to alter genetics or their environment. What is generally required is a change in behaviour that will result...

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Correlation between spinal column length and the spread of subarachnoid hyperbaric bupivacaine in the term parturient

Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: WM Wan Rahiza --- Department of Anaesthesiology and Intensive Care, Faculty of Medicine, Malaysia AR Raha --- Department of Anaesthesiology and Intensive Care, Faculty of Medicine, Malaysia A Muhd Helmi --- Department of Anaesthesiology and Intensive Care, Faculty of Medicine, Malaysia MN Nadia --- Department of Anaesthesiology and Intensive Care, Faculty of Medicine, Malaysia M Muhammad --- Department of Anaesthesiology and Intensive Care, Faculty of Medicine, Malaysia Z Azmil Farid --- Department of Anaesthesiology and Intensive Care, Faculty of Medicine, Malaysia I Azarinah --- Department of Anaesthesiology and Intensive Care, Faculty of Medicine, Malaysia MZ Jaafar --- Department of Anaesthesiology and Intensive Care, Faculty of Medicine, Malaysia

Background: Anaesthetists frequently tailor the subarachnoid local anaesthetic dosage according to parturient height to achieve sensory blockade up to the T4 dermatome for lower segment Caesarean sections (LSCSs). Studies that have been conducted have demonstrated that height does not affect...

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Anaesthetic challenges in emergency peripartum hysterectomy in West Africa: a Nigerian perspective

Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: UV Okafor --- Department of Anaesthesia, Nigeria HU Ezegwui --- Department of Anaesthesia, Nigeria O Okezie --- Department of Anaesthesia, Nigeria

Background: To determine the foeto-maternal outcome and the anaesthetic challenges in emergency peripartum hysterectomy at the University of Nigeria Teaching Hospital (UNTH), Enugu, Nigeria.

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Anaesthetic implications of a parturient with antiphospholipid antibody syndrome

Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: T Singh --- Department of Anaesthesia, India SM Ghosh --- Department of Anaesthesia, India R Agarwala --- Department of Anaesthesia, India K Rahul --- Department of Anaesthesia, India

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Effectiveness of low-dose midazolam plus ketamine in the prevention of shivering during spinal anaesthesia for emergency lower limb surgery

Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: K Misiran --- Department of Anaesthesiology and Intensive Care, Faculty of Medicine, Malaysia FZ Aziz --- Department of Anaesthesia and Intensive Care, Malaysia

Objective: This study was conducted to compare the effectiveness of two different dosages of intravenous midazolam in combination with ketamine in the prevention of shivering during spinal anaesthesia for emergency lower limb surgery.

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Perioperative effect of epidural dexmedetomidine with intrathecal bupivacaine on haemodynamic parameters and quality of analgesia

Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: D Jain --- Department of Anaesthesiology and Intensive Care, India RM Khan --- Department of Anaesthesiology, Oman D Kumar --- Department of Medicine, India N Kumar --- Department of Anaesthesiology and Intensive Care, India

Background: The present study was a randomised controlled trial designed to evaluate the perioperative effect of epidural dexmedetomidine, in conjunction with intrathecal bupivacaine.

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Improving the Use of Lipid-lowering Drugs at Brits Hospital

Item type: Journal Article • Journal: South African Family Practice • Authors: C Van Deventer --- Brits Hospital, C Mokhlele --- Brits Hospital, J Hugo --- Family Medicine, Medunsa,

Background When it was found by the Brits Hospital Pharmacy and Therapeutics Committee (PTC) in 2000 that simvastatin was responsible for extremely high costs in a district hospital, it was decided to undertake a quality improvement study to assess and,...

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The views of Medical Students on professionalism in South Africa

Item type: Journal Article • Journal: South African Family Practice • Authors: M Van Rooyen --- Department of Family Medicine,

An article on medical professionalism was published in the Annals of Internal Medicine in February 2002 outlining a charter, and the fifth-year medical students of the Medical School of the University of Pretoria were asked to comment on the charter...

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Mosquitoes as vectors of human disease in South Africa

Item type: Journal Article • Journal: South African Family Practice • Authors: PG Jupp --- National Institute for Virology and National Institute for Communicable Diseases,

While malaria is the most important mosquito-borne disease in South Africa, there are also several mosquito-borne viruses that also cause human disease. The most significant are chikungunya, West Nile, Sindbis and Rift Valley fever viruses. In this review these are...

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Relationships between overweight, obesity and physical fitness of nine- to twelve-year-old South African children

Item type: Journal Article • Journal: South African Family Practice • Authors: L Truter --- School of Biokinetics, Recreation and Sport Science, North West University, Potchefstroom Campus, South Africa AE Pienaar --- School of Biokinetics, Recreation and Sport Science, North West University, Potchefstroom Campus, South Africa D Du Toit --- School of Education, North West University, Potchefstroom Campus, South Africa

Background:

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Aphasia, an acquired language disorder

Item type: Journal Article • Journal: South African Family Practice • Authors: R Schoeman --- Department of Psychology, South Africa G Van der Merwe --- Department of Psychology, South Africa

Affecting an estimated one in every 272 South Africans, or 0.37% of the population, aphasia is a neurological condition described as “any disturbance in the comprehension or expression of language caused by a brain lesion”.

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Menopause and its effect on the female lower urinary tract

Item type: Journal Article • Journal: South African Family Practice • Authors: EW Henn --- Department of Obstetrics and Gynaecology, South Africa

Significant hormonal changes occur at the time of menopause and this has an impact on all oestrogen-sensitive tissue. The female lower urinary tract (LUT) is no exception. Decreasing levels of oestrogen characteristic of the menopause produce symptomatic, histological and functional...

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The Phelophepa Health Care Train: a pharmacoepidemiological overview of the Western Cape in 2009

Item type: Journal Article • Journal: South African Family Practice • Authors: I Truter --- Drug Utilisation Research Unit, Department of Pharmacy, South Africa

Background: The Phelophepa Health Care Train is the only primary healthcare train in the world. Phelophepa is an innovative initiative that attempts to make a positive difference to primary healthcare in rural South Africa. The primary aim of this study...

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Common work-related musculoskeletal strains and injuries

Item type: Journal Article • Journal: South African Family Practice • Authors: RM Collins --- Section Sports Medicine, DC Janse Van Rensburg --- Section Sports Medicine, JS Patricios --- Section Sports Medicine,

Muscles, tendons, joints and nerves are susceptible to injury when stressed or traumatised repetitively, or over an extended period of time. Regardless of the nature of the work, a large proportion of the working population's time is spent engaged in...

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Current opinion: Is added dietary sugar detrimental to health?

Item type: Journal Article • Journal: South African Family Practice • Authors: VL Van den Berg --- Department of Nutrition and Dietetics,

The intake of added dietary sugars has escalated dramatically since the 1970s, mostly due to a global increase in the consumption of sugar-sweetened beverages (SSBs). This trend has sparked concerns among scientists and consumers alike regarding the safety of added...

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Use of traditional medicine versus use of the community-based primary health care clinic by the San community at Platfontein

Item type: Journal Article • Journal: South African Family Practice • Authors: GF De Jager --- Department of Family Medicine, Faculty of Health Sciences, EAM Prinsloo --- Department of Family Medicine, Faculty of Health Sciences, G Joubert --- Department of Biostatistics, Faculty of Health Sciences,

Introduction: Working amongst a San community led to the observation that, despite the availability of modern healthcare, high mortality and morbidity associated with disease, such as dehydration, malnutrition and tuberculosis, still prevailed. This study aimed to determine how traditional beliefs...

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Factors associated with undernutrition and overweight in elderly patients presenting at a primary care clinic in Nigeria

Item type: Journal Article • Journal: South African Family Practice • Authors: LA Adebusoye [AN0001] IO Ajayi --- Department of Epidemiology, MD Dairo --- Department of Epidemiology, AO Ogunniyi --- Department of Medicine and Consultant Physician, Nigeria

Background: Undernutrition and overweight are commonly overlooked health problems of the elderly, often due to the implicit assumption that undernutrition is a rare occurrence in old age and overweight is an invariable consequence of ageing.

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The prevalence and perception of obesity and its association with the lifestyle of women at the Mangaung University Community Partnership Project healthcare centre, Bloemfontein

Item type: Journal Article • Journal: South African Family Practice • Authors: EAM Prinsloo --- Department of Family Medicine, Faculty of Medicine and Health Sciences, United Arab Emirates G Joubert --- Department of Biostatistics, Faculty of Health Sciences, M Mohale --- School of Medicine, N Nyindi --- School of Medicine, N Matu --- School of Medicine, L Ntechane --- School of Medicine, MC Struwig --- Faculty of Health Sciences,

Background: This investigation was prompted by the increase of obesity in developing countries with the simultaneous increased risk of preventable noncommunicable diseases. We aimed to determine the prevalence of obesity among women serving a predominantly black peri-urban community, who visited...

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The relationship of overweight and obesity to the motor performance of children living in South Africa

Item type: Journal Article • Journal: South African Family Practice • Authors: L Truter --- School of Biokinetics, Recreation and Sport Science, North-West University, AE Pienaar --- School of Biokinetics, Recreation and Sport Science, North-West University, D Du Toit --- School of Education, North-West University,

Objectives: This study aimed to determine the relationship between overweight and obesity and the motor performance of nine- to 13-year-old South African children.

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Assessing the knowledge and perceptions of medical students from the Western Cape, South Africa, regarding the Millennium Development Goals

Item type: Journal Article • Journal: South African Family Practice • Authors: T Yeatman --- Division of Human Nutrition, Faculty of Health Sciences, N Koen --- Division of Human Nutrition, Faculty of Health Sciences, L De Ridder --- Division of Human Nutrition, Faculty of Health Sciences, B Fenn --- Division of Human Nutrition, Faculty of Health Sciences, L Wormsbacher --- Division of Human Nutrition, Faculty of Health Sciences, L Daniels --- Division of Human Nutrition, Faculty of Health Sciences,

Background: Health science students are key players in implementing the Millennium Development Goals (MDG). Knowledge and understanding at university level is essential to achieve the goals by 2015. The primary objective of this study was to assess the knowledge and...

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Prevalence of raised body mass indices and the association with high blood pressure and hyperglycaemia in the rural black population of Ga-Mothapo village, Capricorn District of Limpopo province

Item type: Journal Article • Journal: South African Family Practice • Authors: DG Sengwayo --- Department of Biomedical Sciences, MM Moraba --- Department of Medical Science, SCKM Motaung --- Department of Biomedical Sciences,

Objective: To assess the prevalence of elevated body mass index and to establish whether there was an association between raised body mass index (BMI) and high blood pressure (BP) and hyperglycaemia in the rural population of Ga-Mothapo village, Limpopo province.

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Knowledge and attitude of Nigerian personnel working at Federal Medical Centre in Nigeria on carbon monoxide poisoning from electrical power generators

Item type: Journal Article • Journal: South African Family Practice • Authors: Jide Afolayan --- Department of Anaesthesia, Nigeria Tokunbo Olajumoke --- Department of Anaesthesia, Nigeria Federick Amadasun --- Department of Anaesthesia, Nigeria Theodore Isesele --- Department of Anaesthesia, Nigeria

Background: Private portable electrical power generators are common household items in Nigeria owing to inadequate electrical power provision for the public. These engines often run indoors, emitting poisonous carbon monoxide gas. Fatalities are commonly reported as a result of carbon...

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Introducing solid foods

Item type: Journal Article • Journal: South African Family Practice • Authors: MJ Lombard --- Nutrition Information Centre, IL Labuschagne --- Nutrition Information Centre,

There are recommendations to guide parents to help their infants make the transition from milk to weaning foods, but they differ in their focus in developed or developing countries and on the physiological and behavioural reasons that underlie the introduction...

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Spirit(ed) away: preventing foetal alcohol syndrome with motivational interviewing and cognitive behavioural therapy

Item type: Journal Article • Journal: South African Family Practice • Authors: A Jansen Van Vuuren --- University of Cape Town, D Learmonth --- University of Cape Town,

Foetal alcohol syndrome (FAS) is a growing concern in South Africa. In the Western Cape, prevalence rates for FAS are the highest in the world. Not surprisingly, the Western Cape also has some of the highest levels of alcohol consumption...

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Sense of humour and adolescents' cognitive flexibility

Item type: Journal Article • Journal: South African Family Practice • Authors: KGF Esterhuyse --- Department of Psychology, N Nortjé --- University of the Free State, A Pienaar --- University of the Free State, RBI Beukes --- University of the Free State,

Objective: There is a lack of research on humour among adolescents in South Africa. This article examines cognitive flexibility and humour. The objective was to investigate the roles of gender and language as possible moderating variables in the relationship between...

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Prevalence of lower urinary tract symptoms suggestive of benign prostatic hyperplasia in primary care, Port Harcourt, Nigeria

Item type: Journal Article • Journal: South African Family Practice • Authors: AA Bock-Omma --- Department of Family Medicine and General Practice, Shawsand Medical Centre, Nigeria PO Dienye --- Department of Family Medicine, Nigeria IS Oghu --- Department of Family Medicine, Nigeria

Objectives: The study objectives were to determine the pattern of presentation of Lower urinary tract symptoms (LUTS) in the respondents, the prevalence of LUTS suggestive of BPH, and respondents' quality of life.

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Psychiatric Patients’ Evaluation of the Efficacy of Obeah vs. Western Medicine in Treating Their Mental Illness

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Caryl C.B. James [AN0001]

This study sought to determine any potential benefits in psychiatric patients’ use of traditional medicine in their treatment. Participants were 51 Jamaican patients who self-reported on concurrent use of western and alternative medicine. They completed the Jamaican Healthcare Perception Questionnaire...

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Utility of kangaroo mother care in preterm and low birthweight infants

Item type: Journal Article • Journal: South African Family Practice • Authors: SR Shrivastava --- Department of Community Medicine, PS Shrivastava --- Department of Community Medicine, J Ramasamy --- Department of Community Medicine,

Preterm birth (< 37 completed weeks of gestation) is the largest direct cause of neonatal mortality, accounting for an estimated 27% of the 4-million neonatal deaths every year. Kangaroo mother care (KMC) is a type of care for preterm and...

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Sources of life meaning among South African university students

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Werner Nell --- Department of Sociology, South Africa

This study explored the sources of meaning in life among a group of 243 South African university students, using a sequential exploratory mixed methods design. First, data from semi-structured questionnaires (n=40) were subjected to qualitative content analysis; next, from the...

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Does thinking about the meaning of life make you happy in a religious and globalised world? A 75-nation study

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Mohsen Joshanloo --- Victoria University of Wellington, New Zealand Dan Weijers --- Chungbuk National University, South Korea

This paper reports on a multilevel study of 75 nations, which tests two hypotheses that arose from considering Tolstoy's experience of thinking about the meaning and purpose of life. The globalisation-as-exacerbator hypothesis predicts that as globalisation increases, the relationship between...

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Presence of meaning and search for meaning as mediators between spirituality and psychological well-being in a South African sample

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Itumeleng P. Khumalo --- Optentia Research Focus Area, South Africa Marié P. Wissing --- Africa Unit for Transdisciplinary Health Research, South Africa Lusilda Schutte --- Statistical Consultation Services, South Africa

Spirituality and meaning in life are important pathways to well-being. Research has conceptually and empirically linked spirituality, religiousness and meaning in life. The present study was concerned with investigating presence of meaning (MLQ-P) and search for meaning (MLQ-S) as mediators...

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Felicitas Publica and community well-being: nourishing relational goods through dialogic conversations between deprived and privileged populations

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Helena Águeda Marujo --- School of Social and Political Sciences, Portugal Luis Miguel Neto --- School of Social and Political Sciences, Portugal

This article discusses the theoretical justifications, presumed relevance and value of using community interventions designed to be appreciative and strengths based, participatory and conversational, context sensitive and value driven, to promote well-being actions and coordinated meaning between privileged persons and...

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Meaning and relational well-being: a reflection on the state of the art and a way forward

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Marié P. Wissing [cor1]

This paper provides a brief overview of facets of meaning and relational well-being highlighting the foci of current research on meaning, relationships as sources of meaning, contextual relevance and meta-theoretical assumptions. Lacunae in knowledge are indicated and a model proposed...

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Occupational stress and mental well-being in a cohort of Black South African teachers

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Nelmarie Boshoff --- Faculty of Health Sciences, School for Psychosocial Behavioural Sciences, South Africa Johan C. Potgieter --- Faculty of Health Sciences, School for Psychosocial Behavioural Sciences, South Africa Esme van Rensburg --- Faculty of Health Sciences, School for Psychosocial Behavioural Sciences, South Africa Suria Ellis --- Faculty of Health Sciences, School for Psychosocial Behavioural Sciences, South Africa

This study explored levels of occupational stress and mental well-being of a cohort of Black South African teachers. 200 secondary school teachers completed the Teacher Stress Inventory (TSI: Boyle, Borg, Falzon, & Baglion, 1995), General Health Questionnaire (GHQ-28: Goldberg &...

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Exploring the relationship between religious fundamentalism, life satisfaction, and meaning in life

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Werner Nell --- Optentia Research Programme, School of Behavioural Sciences, South Africa

This study explored the relationship between life satisfaction, meaning in life, and religious fundamentalism among 420 participants (28.8% male, 88.4% African, 8.4% White) residing in the Gauteng province of South Africa. A cross-sectional quantitative survey design was followed. Data were...

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The prediction of turnover intention by means of employee engagement and demographic variables in a telecommunications organisation

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Mandu Sibiya --- School of Applied Human Sciences, South Africa Johanna H. Buitendach --- School of Applied Human Sciences, South Africa Herbert Kanengoni --- School of Applied Human Sciences, South Africa Shaida Bobat --- School of Applied Human Sciences, South Africa

This study sought to determine the prediction of turnover intention by employee engagement and demographic variables in a large South African information and communication technology (ICT) organisation. Cross-sectional survey data was collected from the organisation. Using a sample of 2276...

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Microclimate conditions in ventilated wet-walled greenhouses in a subtropical climate: spatial variability

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Michael J Savage --- Agrometeorology Discipline, Soil-Plant-Atmosphere Continuum Research Unit, School of Agricultural, Earth and Environmental Sciences, South Africa

Spatial variations of microclimatic conditions in enclosed north–south (N–S) oriented single-arched greenhouse polycarbonate structures, with a wet-wall providing evaporative cooling at the S end, were investigated and displayed online in near real-time. Temperature-controlled fans at the N end extracted air...

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‘Zimbabwe will never be a colony again’: changing celebratory styles and meanings of independence

Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Wendy Willems --- Department of Media and Communications, United Kingdom

As part of a revival of cultural nationalism, state-led national-day celebrations intensified in Zimbabwe in the early 2000s through the introduction of popular music events alongside the traditional official, militarised ceremony. Independence Day, in particular, provided ZANU-PF with an excellent...

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Leading while being led: developing the developer at a Catholic NGO in Cape Town

Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Grant A. Fore --- STEM Education Research Institute (SERI), Indiana University-Purdue University, U.S.A.

The paper uses ethnographic data about the religious ethics undergirding the discourse and practices of development agents at Catholic Welfare and Development (CWD), a faith-based NGO in Cape Town, South Africa. It explores how the dynamic interrelation between faith and...

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Characterising the diameter distribution of Sal plantations by comparing normal, lognormal and Weibull distributions at Tilagarh Eco-park, Bangladesh

Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Jiban Chandra Deb --- Department of Forestry and Environmental Science, School of Agriculture and Mineral Sciences, Bangladesh Md Habibur Rahman Salman --- Department of Forestry and Environmental Science, School of Agriculture and Mineral Sciences, Bangladesh Md Abdul Halim --- Department of Forestry and Environmental Science, School of Agriculture and Mineral Sciences, Bangladesh Md Qumruzzaman Chowdhury --- Department of Forestry and Environmental Science, School of Agriculture and Mineral Sciences, Bangladesh Anindita Roy --- Department of Forestry and Environmental Science, School of Agriculture and Mineral Sciences, Bangladesh

For many years foresters have been using statistical probability density functions to describe and characterise stand structure. Predicting the current and future yields of a stand is essential for successful stand and timber management. Implicit prediction of current yield is...

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First-time mothers’ experiences of meaningfulness during their third trimester of pregnancy: A focus on spirituality

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Amoné Redelinghuys --- African Unit for Transdisciplinary Health Research, South Africa Heleen Coetzee --- African Unit for Transdisciplinary Health Research, South Africa Vera Roos --- African Unit for Transdisciplinary Health Research, South Africa

This study sought to gain in-depth understanding of the lived experiences of first-time mothers during their third trimester of pregnancy. The non-probability, purposive sample were Afrikaans speaking first-time mothers aged between 22 and 40 years. Data on their experiences of...

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Sense of meaning and study perseverance and completion: a brief report

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Solomon Makola --- Central University of Technology, South Africa

The study examines sense of meaning influences on study perseverance and course completion among students within a faculty of management sciences at a South African university (n = 40). Participants were selected for high scores on the Purpose in life...

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Estimating present and future profits within the Namibian hake industry: a bio-economic analysis

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: CH Kirchner --- Graduate School of Business, South Africa

Namibia's fishing industry is managed using a system of fishing rights and individual fishing quotas. This property rights system was intended to encourage the local fishing industry to exploit the resource responsibly. Unfortunately, unintended perverse incentives have promoted induced overcapacity...

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Institutionalisation of knowledge transfer on sexual behaviour in the times of AIDS: a case study from a village community in north-central Namibia

Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Mari Kervinen --- University of Eastern Finland, Finland

This paper concentrates on the changes in knowledge transfer in northern Namibia with respect to sexual norms, behavioural advice and sexual health information. The research was conducted in a small village community in Ohangwena region, where over 100 semi-structured and...

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Socio-economic and demographic factors related to HIV status in urban informal settlements in the Eastern Cape, South Africa

Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Liana Steenkamp --- HIV&AIDS Research Unit, South Africa Danie Venter --- Unit for Statistical Consultation, South Africa Corinna Walsh --- Department of Nutrition and Dietetics, South Africa Pelisa Dana --- Eastern Cape AIDS Council, South Africa

The prevalence of HIV&AIDS is embedded in social and economic inequity and the relationship between social determinants and HIV incidence is well established. The aim of this study was to determine which socio-economic and demographic factors are related to HIV...

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Status and diurnal activity budget of non-breeding White-headed Ducks Oxyura leucocephala in Algeria

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Nedjwa Meziane --- Laboratoire de Recherche et de Conservation des Zones Humides, Algeria Farrah Samraoui --- Laboratoire de Recherche et de Conservation des Zones Humides, Algeria Boudjéma Samraoui --- Laboratoire de Recherche et de Conservation des Zones Humides, Algeria

In Algeria, the Globally Endangered White-headed Duck Oxyura leucocephala is resident throughout the year in the coastal wetlands of north-east Algeria and the Hauts Plateaux, where it occupies habitats that range from freshwater ponds and brackish marshes to hypersaline lakes...

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Psychological strengths and subjective well-being in South African white students

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Leon T. B. Jackson --- North-West University, South Africa Fons J. R. van de Vijver --- North-West University, South Africa Runél Fouché --- North-West University, South Africa

This study investigated the role of individual resources, notably self-efficacy, gratitude, and hope, in subjective well-being of white dormitory students at a historically white institution of higher learning. Using a convenience sample of white students (N = 227), we tested the role...

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Positive work experiences and life satisfaction: the moderating role of gender

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Jillian C. Williamson --- University of Johannesburg, South Africa Madelyn Geldenhuys --- University of Johannesburg, South Africa

This study investigated the effects of work engagement and psychological meaningfulness on life satisfaction taking into account the moderating effect of gender. A cross-sectional research design was used to capture data on satisfaction with life, work engagement and psychological meaningfulness...

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Interactions between stream channel incision, soil water levels and soil morphology in a wetland in the Hogsback area, South Africa

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Mohammed Y Omar --- Department of Agronomy, South Africa Pieter AL Le Roux --- Department of Soil, Crop and Climate Sciences, South Africa Johan J van Tol --- Department of Agronomy, South Africa

Wetland degradation in the form of channel incisioning can significantly alter the hydrological functioning of a wetland. In this study in a small headwater wetland in the Hogsback area, Eastern Cape province, the impact of channel incisioning on soil water...

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Aggregate breakdown mechanisms as affected by soil texture and organic matter in soils dominated by primary minerals

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Adornis D Nciizah --- Department of Agronomy, South Africa Isaiah IC Wakindiki --- Department of Agronomy, South Africa

Soil aggregates breakdown mechanisms depend on soil properties such as texture, clay mineralogy and organic matter content. Little is known about the effect of soil properties on aggregate breakdown mechanisms in South African soils. The objective of this study was...

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The effect of bacterial-based biofertilisers and cytokinin on the emergence of sunflower at non-limiting and supra-optimal temperatures

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Andries A Nel --- Agricultural Research Council–Grain Crops Institute, South Africa

Subsurface sunflower (Helianthus annuus L.) seedling growth often deteriorates on sandy-textured soils due to supra-optimal temperature levels on the Highveld area of South Africa leading to poor emergence and suboptimum plant population densities. It has been shown that seedling growth...

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Impact of soil amendments and weather factors on bacterial wilt and yield of two tomato cultivars in Abeokuta, Nigeria

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Akinola R Popoola --- Department of Crop Protection, Nigeria Sikiru A Ganiyu --- Department of Crop Protection, Nigeria Oluwatoyin A Babalola --- Department of Soil Science and Land Management, Nigeria Emily I Ayo-John --- Department of Crop Protection, Nigeria Ayodele A Fajinmi --- Department of Crop Protection, Nigeria Iyabo A Kehinde --- Department of Biological Sciences, Nigeria Taiwo H Adegboye --- IFSERAR, Nigeria

Tomato bacterial wilt, caused by Ralstonia solanacearum, leads to tomato yield losses of up to 80% in south-western Nigeria. Soil amendments and weather conditions are important in the management of the disease. Field experiments were conducted at the Research Farm...

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Europe's long history of extracting African renewable energy: Contexts for African scientists, technologists, innovators and policy-makers

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Kate B. Showers --- Centre for World Environmental History, United Kingdom

Having failed to identify local energy supplies compliant with Kyoto Protocol obligations, the EU turned to Africa in the 21st C. According to definition, the term ‘renewable energy’ source equally describes slaves, forests and rivers. Environmental history analysis demonstrates the...

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The relationship between employees’ experience of performance management and work engagement within a South African organisation

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Janko Kotzé --- Department of Industrial Psychology, South Africa Sanet van der Westhuizen --- Department of Industrial Psychology, South Africa Elzabé Nel --- Department of Industrial Psychology, South Africa

The study investigated the relationship between employees’ experience of performance management and work engagement. Participants were a convenience sample of employed adults (N=202; females=59%, middle management = 48%, White = 54%, tenure more than 9 years = 48%) in an organisation in the vehicle and asset-based...

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Performance appraisal systems — equity perceptions of mathematics teachers: an exploratory study

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Michael Kainose Mhlolo --- Faculty of Education, South Africa

This study investigated equity perceptions of a school based performance appraisal system in a subject discipline. Participants were 110 mathematics teachers (females = 10%) and 12 school principals (females = 25%). They completed a questionnaire on distributive, procedural and interactional justice regarding the performance...

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Evidence for lacustrine breeding by sanjika Opsaridium microcephalum (Teleostei: Cyprinidae) in Lake Malawi

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: D Tweddle --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa GF Turner --- School of Biological Sciences, UK

Three species of Opsaridium occur in the Lake Malawi catchment. The kabyabya Opsaridium tweddleorum is a small species restricted to inflowing rivers and streams, the mpasa Opsaridium microlepis is a large lake-dwelling species that ascends the lower reaches of inflowing...

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Estimation of size at first maturity in two South African coral species

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: PH Montoya-Maya --- Oceanographic Research Institute, Marine Parade, South Africa AHH Macdonald --- School of Life Sciences, South Africa MH Schleyer --- Oceanographic Research Institute, Marine Parade, South Africa

The corals Acropora austera and Platygyra daedalea have been the subject of extensive reproductive and population genetic studies in the iSimangaliso Wetland Park (iSimangaliso), on the KwaZulu-Natal coast, eastern South Africa. Despite this, estimates of size at first maturity in...

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An exploration of anaemia in low-birthweight infants exposed to perinatal zidovudine at the neonatal unit at a regional hospital in Durban

Item type: Journal Article • Journal: South African Family Practice • Authors: S Hanley --- Department of Family Medicine, South Africa A Ross --- Department of Family Medicine, South Africa

Objective: The objective of the study was to determine the prevalence and degree of anaemia in low-birthweight neonates exposed to intrauterine zidovudine (AZT) at a regional hospital neonatal unit in Durban.

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Functional limitations and coping mechanisms of women aged 60 years and older with self-reported hand osteoarthritis

Item type: Journal Article • Journal: South African Family Practice • Authors: J McIntyre --- Department of Occupational Therapy, South Africa RWE Joubert --- Department of Occupational Therapy, South Africa SS Ramklass --- School of Clinical Medicine, South Africa

Background: Hand osteoarthritis (HOA) is common in older women who seem to cope with the associated limitations in hand function. The importance of identifying coping mechanisms within a local context might have implications for intervention, especially with the introduction of...

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Effects of climate change on a peri-urban farming community in Lagos, Nigeria

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Taibat Lawanson --- Department of Urban and Regional Planning, Nigeria Olabode Orelaja --- Department of Urban and Regional Planning, Nigeria Michael Simire --- Department of Urban and Regional Planning, Nigeria

This paper investigates the effects of climate change on agricultural activities in Igbe Farming Community, Lagos, Nigeria. The paper adopts a case study methodology in which structured questionnaires were administered on 161 farmers in the community. Information on the socio-economic...

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“Bearing my fruit into the grave”: experiences of anticipatory grieving and bereavement among Zimbabwean HIV positive women with loss of their only child

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Julia Mutambara --- Department of Psychology, Zimbabwe Memory Chitambira --- Department of Psychology, Zimbabwe James January --- Department of Community Medicine, Mpikelelo Maseko --- Department of Psychology, Zimbabwe

This study aimed to explore the bereavement experiences of HIV positive women who had lost their only child. Participants were 10 women living with HIV (age range = 24–35 years) and with loss of their only child. Data on experiences of anticipatory...

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The evaluation of an equine-assisted therapy programme with a group of boys in a youth care facility

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Christa Boshoff --- Community Psychosocial Research, South Africa Herman Grobler --- Community Psychosocial Research, South Africa Alida Nienaber --- Community Psychosocial Research, South Africa

The goal of this study was to evaluate the efficacy of an equine-assisted therapy programme aimed at improving the psychological well-being of boys in a custodial school of industry. Participants were 39 boys who live in a youth care facility...

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Soil organic carbon and nitrogen stocks along a seasonal wetland (dambo) transect in central Zimbabwe

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: George Nyamadzawo --- Department of Soil Science and Agricultural Engineering, Zimbabwe Menas Wuta --- Department of Soil Science and Agricultural Engineering, Zimbabwe Justice Nyamangara --- International Crops Research Institute for the Semi Arid Tropics, Matopos Research Station, Zimbabwe Philip Nyamugafata --- Department of Soil Science and Agricultural Engineering, Zimbabwe

Ecosystems of central and southern Africa are occupied by some of the largest seasonal wetlands commonly called dambos. Dambos are likely to store huge stocks of soil organic carbon (SOC) because of their saturated conditions. However, most available literature report...

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Morphological identification of the ryegrass hybrid Lolium multiflorum × Lolium perenne and isolation of the pathogen Fusarium pseudograminearum in the Western Cape

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Michael I Ferreira --- Plant Science, Western Cape Department of Agriculture, South Africa Carl F Reinhardt --- Department of Plant Production and Soil Science, South Africa Sandra C Lamprecht --- Agricultural Research Council–Plant Protection Research Institute, South Africa Marna Sinclair --- Veterinary Services, Western Cape Department of Agriculture, South Africa Liezl MacKenzie --- Directorate Research Support Services, Western Cape Department of Agriculture, South Africa Gert van Coller --- Plant Science, Western Cape Department of Agriculture, South Africa

Weed resistance to herbicides present one of the greatest current economic challenges to agriculture. Herbicide resistant ryegrass (Lolium spp.) is a serious problem in Western Cape grain-producing areas. Morphological and pathogenic analyses were performed on ryegrass samples. Morphologically, 50% of...

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An innovative drought early warning system for sub-Saharan Africa: integrating modern and indigenous approaches

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Muthoni Masinde --- Department of Information Technology, South Africa

Droughts remain the number one disaster in Africa; drought is responsible for over 88% of all the types of disasters that people are affected by. An effective drought early warning system can support appropriate mitigation and preparedness strategies and hence...

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Effect of location and season on the arthropod prey of Nycteris grandis (Chiroptera: Nycteridae)

Item type: Journal Article • Journal: African Zoology • Authors: Sarah Bayefsky-Anand --- Abraham Joshua Heschel School, U.S.A.

Analysis of culled arthropod prey parts collected from beneath four feeding perches was used to assess prey taken by Nycteris grandis from November 1987 to May 1988. The perches were located along the Zambezi River in Mana Pools National Park...

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Home range and seasonal movement of elephants in the Kunene Region, northwestern Namibia

Item type: Journal Article • Journal: African Zoology • Authors: Keith E.A. Leggett --- Namibian Elephant and Giraffe Trust, Namibia

This paper examines the home ranges and seasonal movements of eight GPS-collared elephants (two females and six males) in the northwestern Kunene region of Namibia. Minimum convex polygon (MCP) and the fixed kernel density estimation (FKDE) methods were used to...

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Food habits and trophic resource partitioning among three mormyrid fishes from man-made Lake Ayame, Ivory Coast

Item type: Journal Article • Journal: African Zoology • Authors: E. P. Kouamélan --- Université de Cocody-Abidjan, UFR Bio-sciences, Laboratoire d’Hydrobiologie, Ivory Coast T. Koné --- Université de Cocody-Abidjan, UFR Bio-sciences, Laboratoire d’Hydrobiologie, Ivory Coast V. N’Douba --- Université de Cocody-Abidjan, UFR Bio-sciences, Laboratoire d’Hydrobiologie, Ivory Coast F. Ollevier --- Katholieke Universiteit Leuven (K.U.L), Zoological Institute, Laboratory of Ecology and Aquaculture,, Belgium

Feeding habits and trophic relationships among three mormyrid species (Petrocephalus bovei, Marcusenius ussheri and Marcusenius furcidens) were assessed in the man-made Lake Ayame in Ivory Coast. The index of preponderance combining the occurrence and weight percentages of the identified prey...

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An analysis of the recreational shore fishery in the Goukamma Marine Protected Area

Item type: Journal Article • Journal: African Zoology • Authors: P. Pradervand --- Oceanographic Research Institute, South Africa R. Hiseman --- Western Cape Nature Conservation Board, South Africa

Ten years (1993–2002) of shore fishing catch and effort data collected during routine patrols in the Goukamma Marine Protected Area in theWestern Cape Province were analysed. Of a total of 35 species recorded, the most common were backtail, Diplodus sargus...

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The impact of fish and drought on frog breeding in temporary waters in Zimbabwe

Item type: Journal Article • Journal: African Zoology • Authors: T. Muteveri --- Department of Biological Sciences, Zimbabwe B. E. Marshall --- Department of Biological Sciences, Zimbabwe

The breeding of frogs in four ponds near Harare, Zimbabwe, was investigated during a wet rainy season (2000/01) and a dry one (2001/02). During 2000/01 eight and nine species bred in two ponds in abandoned gravel pits that never contained...

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Comparative phylogeography of northwest African Natrix maura (Serpentes: Colubridae) inferred from mtDNA sequences

Item type: Journal Article • Journal: African Zoology • Authors: M. Barata --- Departamento de Zoologia e Antropologia, Faculdada de Ciências, Portugal D. J. Harris --- Departamento de Zoologia e Antropologia, Faculdada de Ciências, Portugal R. Castilho --- University of Algarve, Portugal

While the comparative phylogeography of European fauna is relatively well understood, with Pleistocene climatic oscillations leading to ‘southern refugia’ for many species, the equivalent pattern has not been determined for North Africa. In this context variation within North African populations...

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isiXhosa name for leopard

Item type: Journal Article • Journal: African Zoology • Authors: J.M. Feely --- Centre for African Conservation Ecology, Department of Zoology, South Africa

The confusion among some speakers of isiXhosa concerning the meaning of ingwe can probably be traced to John Ayliff’s dictionary of the language published in 1846. There he gives ‘tiger’ as ingwe and ‘leopard’ as ihlozi. He clearly treats the...

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New records of a threatened lion population (Panthera leo) in a West African national park

Item type: Journal Article • Journal: African Zoology • Authors: Francesco M. Angelici --- F.I.Z.V, Italy Massimiliano Di Vittorio --- Dipartimento di Scienze Ambientali e Biodiversità, Italy Fabio Petrozzi --- Dipartimento di Scienze Ecologiche e Biologiche, Italy

In West Africa, the lion is currently characterised by small populations that are fragmented and often isolated from one another, with virtually no ecological connection. In addition, lion populations are generally declining. In recent reports, in Ghana the lion has...

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Does supplemental feeding affect behaviour and foraging of critically endangered western giant eland in an ex situ conservation site?

Item type: Journal Article • Journal: African Zoology • Authors: Pavla Hejcmanová --- Faculty of Tropical AgriSciences, Czech University of Life Sciences, Czech Republic Pavla Vymyslická --- Faculty of Environmental Sciences, Czech University of Life Sciences, Czech Republic Magdalena Žáčková --- Faculty of Environmental Sciences, Czech University of Life Sciences, Czech Republic Michal Hejcman --- Faculty of Environmental Sciences, Czech University of Life Sciences, Czech Republic

The western giant eland (Tragelaphus derbianus derbianus) needs appropriate management for its survival. We measured the effects of supplemental food on activity and browsing patterns during seasons of scarce natural food resources in 2008 and 2009 for a herd of...

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In situ growth rate of Solen cylindraceus (Mollusca: Euheterodonta: Solenidae) in the St Lucia estuarine lake, South Africa

Item type: Journal Article • Journal: African Zoology • Authors: Holly A. Nel --- University of KwaZulu-Natal, Westville Campus, South Africa Renzo Perissinotto --- University of KwaZulu-Natal, Westville Campus, South Africa Ricky H. Taylor --- University of KwaZulu-Natal, Westville Campus, South Africa

Solen cylindraceus, an infaunal bivalve, can reach a maximum length of 95 mm. However, in the St Lucia estuarine system specimens are seldom larger than 55 mm. Thus, the primary aim of this study was to investigate the growth rate...

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Breeding density of the southern ground hornbill, Bucorvus leadbeateri, in the communal areas surrounding the Matobo National Park, Zimbabwe

Item type: Journal Article • Journal: African Zoology • Authors: Minke Witteveen --- University of KwaZulu-Natal, South Africa Elspeth Parry --- , South Africa Mark Norris-Rogers --- School of Agricultural, Earth and Environmental Sciences, University of KwaZulu-Natal, South Africa Mark Brown --- University of KwaZulu-Natal, South Africa

The southern ground hornbill, Bucorvus leadbeateri, is on the IUCN Red List of Threatened Species as a ‘Vulnerable’ species with a decreasing population. Despite a myriad of threats, including loss of nesting sites, accidental poisoning and persecution, there has been...

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Fragmented populations of leopards in West-Central Africa: facing an uncertain future

Item type: Journal Article • Journal: African Zoology • Authors: Pauline Toni --- Université de Rennes 1, France Thierry Lodé --- Université de Rennes 1, France

During recent decades, most endangered species have suffered serious population declines. Little has been documented on leopards inWest-Central Africa and as a result the efficiency of protection measures and wildlife managing practices can be questioned. Using 416 occurrences of leopards,...

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Zooplankton and diatoms of temporary and permanent freshwater pans in the Mpumalanga Highveld region, South Africa

Item type: Journal Article • Journal: African Zoology • Authors: Luisa Riato --- Department of Paraclinical Sciences, South Africa Carin Van Ginkel --- Cripsis Environment, South Africa Jonathan C. Taylor --- School of Biological Sciences, North-West University, South Africa

This paper provides a description of the zooplankton and epiphytic diatom communities of permanent and temporary freshwater pans in the Mpumalanga Highveld region of South Africa. Few studies have investigated the biota of pans in this area, which is seriously...

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Meso-zooplankton movement through the newly constructed Mfolozi channel into and out of the St Lucia Estuary, South Africa

Item type: Journal Article • Journal: African Zoology • Authors: Sean van Elden --- School of Life Sciences, University of KwaZulu-Natal, Westville Campus, South Africa Michael J. Dyer --- School of Life Sciences, University of KwaZulu-Natal, Westville Campus, South Africa Nicola K. Carrasco --- School of Life Sciences, University of KwaZulu-Natal, Westville Campus, South Africa Renzo Perissinotto --- School of Life Sciences, University of KwaZulu-Natal, Westville Campus, South Africa

The historical canalization of the Mfolozi River resulted in the St Lucia Estuary losing its main freshwater source. This, combined with the recent drought, led to low water levels, hypersaline conditions and dramatic losses in biodiversity. The excavation of a...

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A Porites lutea climate record from Sodwana Bay, South Africa

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: S Hayman --- School of Agriculture, Earth and Environmental Sciences, Geological Sciences, South Africa R Uken --- School of Agriculture, Earth and Environmental Sciences, Geological Sciences, South Africa

We report on a 41-year (winter 1970 to winter 2010) Porites lutea coral core climate record from Two-Mile Reef, Sodwana Bay, in the South-Western Indian Ocean. X-ray analysis, ultraviolet fluorescent photography and stable isotope (δ18O and δ13C) analysis revealed skeletal...

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The role of reproduction in Glyceria maxima invasion

Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Lutendo F Mugwedi --- Agricultural Research Council–Plant Protection Research Institute, South Africa Jeremy Goodall --- Agricultural Research Council–Plant Protection Research Institute, South Africa Edward TF Witkowski --- School of Animal, Plant and Environmental Sciences, South Africa Marcus J Byrne --- School of Animal, Plant and Environmental Sciences, South Africa

Glyceria maxima (Poaceae) is regarded as one of the most invasive grasses worldwide, but has only recently become naturalised in South Africa after its intentional introduction as a fodder crop in the 1940s. It invades seasonally inundated habitats. The primary...

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Movement ecology of five Afrotropical waterfowl species from Malawi, Mali and Nigeria

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: John Y Takekawa --- US Geological Survey, USA Shane R Heath --- US Geological Survey, USA Samuel A Iverson --- US Geological Survey, USA Nicolas Gaidet --- CIRAD, UPR AGIRs, Campus international de Baillarguet, France Julien Cappelle --- CIRAD, UPR AGIRs, Campus international de Baillarguet, France Tim Dodman --- Hundland, UK Ward Hagemeijer --- Wetlands International, The Netherlands William D Eldridge --- US Fish and Wildlife Service, USA Scott A Petrie --- Long Point Waterfowl, Canada Gregory S Yarris --- US Geological Survey, USA Shiiwua Manu --- AP Levantis Ornithological Research Institute, Nigeria Glenn H Olsen --- US Geological Survey, USA Diann J Prosser --- US Geological Survey, USA Kyle A Spragens --- US Geological Survey, USA David C Douglas --- US Geological Survey, USA Scott H Newman --- Food and Agriculture Organization of the United Nations, Vietnam

Habitat availability for Afrotropical waterbirds is highly dynamic with unpredictable rainfall patterns and ephemeral wetlands resulting in diverse movement strategies among different species. Movement strategies among waterfowl encompass resident, regional and intercontinental migrants, but little quantitative information exists on their...

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Can a luxury hotel compete without a spa facility? – Opinions from senior managers of London’s luxury hotels

Item type: Journal Article • Journal: • Authors: Andy Heyes --- Hospitality Management, University of Derby, Derby, United Kingdom Colin Beard --- Sheffield Business School, Sheffield Hallam University, Sheffield, United Kingdom Sjoerd Gehrels --- Academy of International Hospitality Research, Stenden University of Applied Sciences, Leeuwarden, The Netherlands

The development of the wellness facility within the luxury hotel sector around the world has been evident, with many professionals believing that spas are an expected element within luxury hotels. This paper has been written to provide further consideration for...

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Phenotypic characterisation of sweetpotato genotypes grown in East and Central Africa

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Rukundo Placide --- African Centre for Crop Improvement, South Africa Hussein Shimelis --- African Centre for Crop Improvement, South Africa Mark Laing --- African Centre for Crop Improvement, South Africa Daphrose Gahakwa --- Rwanda Agriculture Board, Rwanda

Identification of genetic variability and interrelationships among germplasm collections is fundamental to select parents with complementary traits for plant breeding programmes. The aim of this study was to characterise and identify breeding parents among 54 sweetpotato genotypes grown in Rwanda,...

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Reproductive biology of the critically endangered tropical tree Talbotiella gentii

Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Daniel Dompreh --- Department of Plant and Soil Science, UK Michael D Swaine --- Department of Plant and Soil Science, UK Christopher C Wilcock --- Department of Plant and Soil Science, UK

Talbotiella gentii is a critically endangered caesalpiniaceous legume endemic to Ghana, restricted in distribution to the margins of the forest zone where there has been extensive fire damage in recent decades. It occurs as isolated, near-monospecific populations, some of which...

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A tool for identifying potential Eucalyptus nitens seed orchard sites based on climate and topography

Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Ilaria Germishuizen --- Institute for Commercial Forestry Research, South Africa Robin AW Gardner --- Institute for Commercial Forestry Research, South Africa

Shy seed production in orchards of Eucalyptus nitens is a major barrier to the deployment of genetic gain in South African plantations. A machine learning method was used to identify optimal sites for the establishment of E. nitens seed orchards...

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Aspects of the predictive and explanatory power of value added information in South Africa

Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: C J van Staden --- Department of Accountancy and Business Law, New Zealand

In this paper the predictive and explanatory power of value added information was investigated with regards to three external indicators by doing statistical analysis on empirical data of South African listed companies. The analysis indicated that value added information did...

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The use and perceived usefulness of IAS 29 restated financial statements by Zimbabwean investment analysts

Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: E Chamisa --- Department of Accounting,

International Accounting Standard 29 (IAS 29) (Financial Reporting in Hyperinflationary Economies) asserts that, in a hyperinflationary economy, financial statements “are useful only if they are expressed in terms of the measuring unit current at the balance sheet date” (International Accounting...

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An argument for either excluding death as a capital gains tax event or abolishing estate duty

Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: J J Roeleveld --- Department of Finance and Tax,

South Africa is one of the few countries in the world that imposes both estate duty and capital gains tax on the assets of a person on death. This paper presents an argument for the abolishment of estate duty in...

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Essensiële agtergrondkennis van die konsepsuele raamwerk: ’n Opvallende leemte in die Ovkom-leerplan

Item type: Journal Article • Journal: De Ratione • Authors: E. Saenger --- Universiteit van Suid-Afrika,

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South African Statements of Accounting Practice as Part of a User-oriented Framework

Item type: Journal Article • Journal: De Ratione • Authors: J.A. Miller --- University of Natal-Durban,

In this third and final article on a suggested Hierarchy of Objectives for Financial Reporting the author deals with Statements of Accounting Practice as the operational level thereof, implementing concepts and principles towards achieving the objectives defined. As a consequence...

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The Nature of the South African Corporate Economy: A need to review company objectives?

Item type: Journal Article • Journal: De Ratione • Authors: D Botha --- University of Cape Town,

The maximisation of shareholders’ wealth as the primary goal of the firm is the cornerstone of modern financial theory which has its source mainly from USA. The South African corporate economy has significantly different characteristics compared with that of the...

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Benthic macroinvertebrate assemblages in mangroves and open intertidal areas on the Dar es Salaam coast, Tanzania

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: C Rumisha --- Department of Biological Sciences, Tanzania H Shukuru --- Department of Biological Sciences, Tanzania J Lyimo --- Department of Biological Sciences, Tanzania JD Maganira --- Department of Biological Sciences, Tanzania A Nehemia --- Department of Biological Sciences, Tanzania

The assemblages of benthic macroinvertebrates in mangroves and open intertidal areas of the Dar es Salaam coast, Tanzania, was investigated in 2013–2014, revealing 56 species. Higher density, species richness and diversity were recorded in open intertidal areas, compared to nearby...

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Tanzania River Scoring System (TARISS): a macroinvertebrate-based biotic index for rapid bioassessment of rivers

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: LT Kaaya --- Department of Aquatic Sciences and Fisheries, Tanzania JA Day --- Department of Biological Sciences, South Africa HF Dallas --- Department of Botany, South Africa

The biological assessment of rivers using aquatic macroinvertebrates is an internationally recognised approach for the determination of riverine ecological conditions. In this study a Tanzanian macroinvertebrate-based biotic method, Tanzania River Scoring System (TARISS), was developed in 2012, based on the...

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The role of employee wellness programme in the hospitality industry: a review of concepts, research, and practice

Item type: Journal Article • Journal: • Authors: Tingting (Christina) Zhang --- Department of Human Sciences, Ohio State University, Columbus, Ohio, USA Jay Kandampully --- Department of Human Sciences, Ohio State University, Columbus, Ohio, USA Hye Yoon Choi --- Department of Human Sciences, Ohio State University, Columbus, Ohio, USA

In the hospitality industry, employees are critical to firm success, through their intimate interactions with customers to create memorable experiences and relationships. A nascent strategy adopted by many hospitality firms seeks to increase employee engagement and commitment through employee wellness programmes. Despite...

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The hospitality of Nepali tea houses: redefining the boundaries of empowerment

Item type: Journal Article • Journal: • Authors: Andrew C MacLaren --- Stenden University of Applied Sciences, Leeuwarden, The Netherlands Carolyn L McMillan --- Stenden University of Applied Sciences, Leeuwarden, The Netherlands Kevin D O’Gorman --- Stenden University of Applied Sciences, Leeuwarden, The Netherlands

The paper reports on research which shows that in an environment where women traditionally represent the marginalised population, the female tea house owners/managers display higher levels of economic, social and psychological empowerment. It illustrates how commercial hospitality has catalysed social...

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Seasonal dry matter production, botanical composition and forage quality of kikuyu over-sown with annual or perennial ryegrass

Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Janke van der Colf --- Department of Plant Production and Soil Science, South Africa Philip R Botha --- Western Cape Department of Agriculture, South Africa Robin Meeske --- Western Cape Department of Agriculture, South Africa Wayne F Truter --- Department of Plant Production and Soil Science, South Africa

The seasonal growth and low forage quality of kikuyu restrict milk production. The aim of this study was to determine the yield and nutritional value of irrigated kikuyu over-sown with perennial, Italian or Westerwolds ryegrass grazed by dairy cows. The...

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Lower urinary tract symptoms (LUTS) in males: a review of pathophysiology

Item type: Journal Article • Journal: South African Family Practice • Authors: Suhani Maharajh --- Department of Urology, South Africa Ehab H Abdel Goad --- Department of Urology, South Africa Serela S Ramklass --- School of Medicine, South Africa Marius C Conradie --- Netcare Waterfall City Hospital, South Africa

Lower urinary tract symptoms (LUTS) refer to the symptom complex that is the common pathway for diseases affecting the lower urinary tract. It manifests as either irritative or obstructive symptoms. LUTS have long been recognised as a significant cause of...

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The psychosocial well-being of a “forgotten” South African community: the case of Ndumo, KwaZulu-Natal

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Werner Nell --- Optentia Research Programme, Department of Behavioural Sciences, South Africa Engela de Crom --- Department of Nature Conservation, South Africa Hendri Coetzee --- Institutional Community Engagement Office and Unit for Environmental Sciences and Management, North-West University, South Africa Elize van Eeden --- Research Group for Integrative Multidisciplinary Ecohealth and Wellbeing Research, South Africa

This study investigated the psychosocial well-being of an indigenous cultural community in South Africa, using a sequential explanatory mixed-methods design. Data on life satisfaction and emotional, social and psychological well-being were collected from 521 local residents (48% female) of Ndumo...

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Clinical anatomy of the superior cluneal nerve in relation to easily identifiable bony landmarks

Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: L Loubser --- Department of Anatomy, South Africa RP Raath --- Jakaranda Pain Clinic, South Africa AN Van Schoor --- Department of Anatomy, South Africa

Background: Lower back pain (LBP) remains a common ailment among adult populations and a superior cluneal nerve (SCN) entrapment accounts for 10% of reported LBP cases. The diagnostic criteria for SCN entrapment include anaesthesia of the area supplied by the...

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A review of the radiological imaging modalities of non-traumatic small bowel obstruction

Item type: Journal Article • Journal: South African Family Practice • Authors: Narisha Maharaj --- Department of Radiology, South Africa Bhugwan Singh --- Department of Surgery, South Africa

Small bowel obstruction is a common clinical presentation that presents a diagnostic conundrum. Over the last 2 decades, there has been a paradigm shift in the radiological investigation of small bowel obstruction (SBO) and in the indication for and timing...

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The emotional wellbeing of lay HIV counselling and testing counsellors

Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Maretha Visser --- Department of Psychology, South Africa Princess Mabota --- Department of Psychology, South Africa

The HIV testing, treatment and care programme of the South African public healthcare system depends on HIV counselling and testing (HCT) that is primarily delivered by lay counsellors. Lay counsellors are expected to educate clients about HIV/AIDS, advocate behaviour change,...

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Personality and job satisfaction: their role in work-related psychological well-being

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Natalie Jones --- Department of Industrial Psychology and People Management, South Africa Carin Hill --- Department of Industrial Psychology and People Management, South Africa Carolina Henn --- Department of Industrial Psychology and People Management, South Africa

This study investigated the role of work related psychological well-being in the relationship between personality and job satisfaction. Participants were 207 (females = 58.9%, blacks = 20.3%, white = 64.3%, Indian = 7.7% and Coloured = 6.8%) employees of various South African organisations. The participants completed the Ryff's Scale of...

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Sleep duration and chronotype in adults in Côte d'Ivoire: influence of gender, religion and age

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Claudia Borchers --- Max Planck Institute of Evolutionary Anthropology, Germany Dabila Ouattara --- Wild Chimpanzee Foundation, Switzerland Christian Vollmer --- Institute of Psychology, Germany Christoph Randler --- Institute of Science, Geography and Technology, Germany

This study investigated the sleep-wake rhythm and chronotype of people living in Côte d'Ivoire. We assessed sleep-wake behaviour in 556 adults (336 men, 220 women) between 25 and 54 years (mean: 38.63) by means of structured interviews. Data were analysed...

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Silodosin — a safer alpha-blocker targeting benign prostatic hyperplasia

Item type: Journal Article • Journal: South African Family Practice • Authors: Karen Koch --- Private practice GP and freelance medical writer, South Africa

Silodosin is a specific alpha-1A receptor inhibitor newly available in South Africa. It offers a real solution to symptoms of BPH especially in those patients with moderate prostate enlargement experiencing nocturia, frequency and incomplete voiding.

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Growth Performance of Two Crossbred Rabbit Genotypes Fed Two Levels of Dietary Protein

Item type: Journal Article • Journal: East African Agricultural and Forestry Journal • Authors: O. M. Momoh --- Department of Animal Breeding and Physiology, H. U. Unung --- Department of Animal Breeding and Physiology, S. Attah --- Department of Animal Production, Nigeria

A study was undertaken in which two crossbred rabbit genotypes were fed two levels of dietary crude protein with the objectives of assessing and comparing their growth performances as well as investigate any possible genotype × protein level interaction. Twenty-four...

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Agronomic performance of new cream to yellow-orange sweetpotato cultivars in diverse environments across South Africa

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Sunette M Laurie --- Agricultural Research Council–Roodeplaat Vegetable and Ornamental Plant Institute (ARC-VOPI), South Africa Sidwell S Tjale --- Agricultural Research Council–Roodeplaat Vegetable and Ornamental Plant Institute (ARC-VOPI), South Africa Andre A van den Berg --- Agricultural Research Council–Roodeplaat Vegetable and Ornamental Plant Institute (ARC-VOPI), South Africa Musa M Mtileni --- Agricultural Research Council–Roodeplaat Vegetable and Ornamental Plant Institute (ARC-VOPI), South Africa Maryke T Labuschagne --- Department of Plant Sciences, South Africa

Sweetpotato is grown in diverse environments of South Africa by both commercial and subsistence farmers. The aim of the present study was to assess the stability, agronomic performance and palatability of new ARC cultivars bred for the informal market, and...

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Effect of heat stress on seed yield components and oil composition in high- and mid-oleic sunflower hybrids

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Rouxléne van der Merwe --- Department of Plant Sciences, South Africa Maryke T Labuschagne --- Department of Plant Sciences, South Africa Liezel Herselman --- Department of Plant Sciences, South Africa Arno Hugo --- Department of Microbial, Biochemical and Food Biotechnology, South Africa

High temperature stress is a major environmental factor influencing processes such as growth, yield and quality of crops. The objective of this study was to assess the effect of heat stress, applied during grain-filling, on seed yield- and oil quality...

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Ecosystem-specific water quality indices

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: I Rangeti --- Department of Community Health Studies, South Africa B Dzwairo --- Institute for Water and Wastewater Technology, South Africa GJ Barratt --- Department of Community Health Studies, South Africa FAO Otieno --- Technology, Innovation and Partnerships, South Africa

The water quality index (WQI) has emerged as a central tool for analysing and reporting quality trends since 1965. It provides a better overview of water quality variability in a catchment than conventional monitoring programmes that use individual variables. Since...

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Imfobe: self-knowledge and the reach for ethics among former, young, anti-apartheid activists

Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Pamela Reynolds --- Department of Anthropology, USA

The paper explores the reach for ethics among young people engaged in opposition to the apartheid state in the 1980s. Structured around the Xhosa concept imfobe, variously translated as morality, virtue, goodness, grace, the paper seeks to locate young peoples'...

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‘Qualified to work’: Anthropological insights into employee empowerment

Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Stephné Herselman --- Department of Anthropology and Archaeology,

Drawing on research conducted in a life insurance company, this paper looks at qualities and behaviour of a group of black financial consultants in terms of the notion of empowerment. It attempts to show that empowerment, in the sense of...

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Sexual practices and sensual selves in Zanzibar

Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Rosabelle Boswell --- Anthropology Department, South Africa

This paper focuses on the sexuality and contemporary sensual behaviour among Zanzibari women and their use of scent in these domains. It is argued that scent forms an integral part of different life-cycle rituals which are embedded in gendered everyday...

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Racism as epithet in the context of post-apartheid's demographic parity goals

Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Andrew Spiegel --- University of Cape Town,

Nearly twenty years after the capitulation of the apartheid state, South Africa's post-apartheid government continues to find it necessary to seek means to direct change in the demographic profile of the country's leading institutions towards a situation where it reflects...

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Stakeholders and stickholders: power and paradigms in a South African development context

Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Sarah A. Bologna --- Department of Social Anthropology, South Africa

The alluring vision that ecotourism can drive both rural development and ecological objectives has taken deep root in post-apartheid South Africa where severe economic inequalities persist as a result of dispossession and grossly restricted access to resources during the colonial...

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Medicine from the Father: Bossiesmedisyne, people, and landscape in Kannaland

Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Joshua B. Cohen --- University of Cape Town, South Africa

In the rural Western Cape local municipality of Kannaland, the word ‘bossiesmedisyne’ (lit. bushes medicine), refers to plant and sometimes animal material used to treat and alleviate a wide range of health problems, ranging from colds to cancer. Based on...

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An exposé ethnography of Zimbabwe's internally displaced ex-farm workers: Practical and ethical dilemmas

Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Andrew Hartnack --- Department of Anthropology,

From 2000 onwards, Zimbabwe's often violent land invasions displaced at least 500 000 farm workers from white-owned commercial farms across the country. While studies subsequently conducted on the land invasions tended to focus on their impact on farm workers who...

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ICT4D and the Siyakhula Living Lab: an anthropological contribution to digital development

Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Robin Palmer --- Rhodes University, South Africa

Anthropologists are increasingly interested in the reception and adaptation of Information and Communications Technologies (ICTs) at the local level, especially when these are intended or adapted for social change in the kinds of societies and communities anthropologists study. The process...

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‘Don't “paraffin” me!’: deception, power and agency in a South African sport for development organisation

Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Cassandra Clark --- Department of Social Anthropology,

The staff of Sport FUNdamentals Southern Africa (SFSA), a sport for development organisation, have labelled a range of deceitful behaviours ‘paraffining’. These behaviours range from improvising life skills lessons to lying in reports. It references paraffin, a common, yet potentially...

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Waiting in liminal space: Migrants' queuing for Home Affairs in South Africa

Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Rebecca Sutton --- Faculty of Law, Canada Darshan Vigneswaran --- Max Planck Institute for the Study of Religious and Ethnic Diversity, Germany Harry Wels --- Athena Institute, VU University Amsterdam, The Netherlands

Waiting is a common feature of everyday encounters between individuals and organisations. Government officials and private sector workers make us wait for decisions, wait for services and sometimes, simply wait our turn. Yet, little attention has been devoted to theorising...

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The valorisation of symbolic labour: the articulation of proper womanhood in post-apartheid Potchefstroom

Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Pia Bombardella --- School for Social and Government Studies, North West University,

Drawing on ethnographic data gleaned from nine months of research conducted among elderly, middle-class, Afrikaans- speaking members of a voluntary woman's organisation that aims at providing adult education to women, pertaining to womanhood, wifehood and motherhood, this paper shows how...

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‘Social pain and social death’: poor white stigma in post-apartheid South Africa, a case of West Bank in East London

Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Octavia Sibanda --- Fort Hare Institute of Social and Economic Research, University of Fort Hare,

This article looks at poor white stigma in post-apartheid South Africa. Drawing on my ethnographic engagement with my informants, I developed this article as a part of my broader argument that explores the complex nature of white poverty in South...

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‘Zimbabwe will never be a colony again’: changing celebratory styles and meanings of independence

Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Wendy Willems --- Department of Media and Communications, United Kingdom

As part of a revival of cultural nationalism, state-led national-day celebrations intensified in Zimbabwe in the early 2000s through the introduction of popular music events alongside the traditional official, militarised ceremony. Independence Day, in particular, provided ZANU-PF with an excellent...

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Leading while being led: developing the developer at a Catholic NGO in Cape Town

Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Grant A. Fore --- STEM Education Research Institute (SERI), Indiana University-Purdue University, U.S.A.

The paper uses ethnographic data about the religious ethics undergirding the discourse and practices of development agents at Catholic Welfare and Development (CWD), a faith-based NGO in Cape Town, South Africa. It explores how the dynamic interrelation between faith and...

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What's culture got to do with it? Examining job embeddedness and organizational commitment and turnover intentions in South Africa

Item type: Journal Article • Journal: Africa Journal of Management • Authors: Ian O. Williamson --- Associate Dean, International Relations, Helen Macpherson Smith Chair in Leadership for Social Impact, Director of the Asia Pacific Social Impact Centre, Oscar Holmes --- Assistant Professor of Management, Rutgers,

Using a longitudinal design this study examines the relationship between job embeddedness, organizational commitment and turnover intentions using a sample of South African professionals. Results show that job embeddedness had a positive relationship on organizational commitment and a negative relationship...

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Kelp gulls prey on the eyes of juvenile Cape fur seals in Namibia

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: AJ Gallagher --- Leonard and Jayne Abess Center for Ecosystem Science and Policy, USA ER Staaterman --- Rosenstiel School of Marine and Atmospheric Sciences, USA N Dreyer --- Sandwich Harbour 4×4, Namibia

The kelp gull Larus dominicanus is an abundant and highly successful avian predator and scavenger that breeds along the coastline in the Southern Hemisphere, ranging from Antarctica to the tropics. On account of its dietary breadth, wide-ranging foraging strategies, and...

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Characteristics and landcover of estuarine boundaries: implications for the delineation of the South African estuarine functional zone

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: DA Veldkornet --- Department of Botany, South Africa JB Adams --- Department of Botany, South Africa L van Niekerk --- Department of Botany, South Africa

This study investigated whether the current lateral boundary for estuaries in South Africa, i.e. the estuarine functional zone (EFZ), includes all estuarine habitats. The EFZ covers 173 930 ha in 304 estuaries/outlets nationally. Field surveys and analysis of available aerial...

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The spiritual wellness of Beyers Naudé: A psychobiographical study of a South African anti-apartheid theologian

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Paul Fouché --- Department of Psychology, Faculty of Humanities, South Africa Barbara Burnell --- Department of Psychology, Faculty of Humanities, South Africa Roelf van Niekerk --- Department of Industrial and Organisational Psychology, South Africa

The study explores and describes Beyers Naudé's (1915–2004) spiritual wellness across his lifespan. Naudé's life history was uncovered through the systematic collection and analyses of life history materials. Data were interpreted applying the Wheel of Wellness model (WoW) by Sweeney...

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A psychobiographical analysis of Dambudzo Marechera's personal development through his writings

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Kudakwashe C Muchena --- School of Behavioural Sciences, South Africa Greg Howcroft --- School of Behavioural Sciences, South Africa Louise Stroud --- School of Behavioural Sciences, South Africa

This study applied psychobiography to explore the personal development of Zimbabwean novelist Dambudzo Marechera – and particularly focus on psychological disintegration. For the evidence, we examined primary and secondary works on his life history with special attention to his literary...

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Reconceptualising hope within the context of vulnerability in South Africa

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Cheryl Wright --- Department of Educational Psychology, South Africa Helen Dunbar-Krige --- Department of Educational Psychology, South Africa Gert van der Westhuizen --- Department of Educational Psychology, South Africa

This study was aimed at clarifying conceptualisations of hope amongst vulnerable young people in a high HIV/AIDS prevalence South African setting. Participants were four young people ranging from 15 to 19, and interview data were collected on their household conditions,...

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Living off the Stony Farm: Address and Diasporic Consciousness in “Shamba la Mawe” by Awilo Mike

Item type: Journal Article • Journal: Eastern African Literary and Cultural Studies • Authors: T. Michael Mboya --- Department of Literature, Theatre and Film Studies, Kenya

This article reads diasporic consciousness in the song “Shamba la Mawe” by the Kenyan artiste, Awilo Mike. It takes as its entry point for the reading the fact that Peter, the speaker in the song's lyrics, a Kenyan migrant in...

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Cord blood malaria parasitaemia in term, normal birthweight nigerian babies

Item type: Journal Article • Journal: Southern African Journal of Epidemiology and Infection • Authors: Ayebo Sadoh --- Department of Child Health, Nigeria Henry Cummings --- Department of Child Health, Nigeria Wilson Sadoh --- Department of Child Health, Nigeria Adedapo Ande --- Department of Obstetrics and Gynaecology, Nigeria

An important risk factor for congenital malaria is cord blood malaria parasitaemia. We report on the effect of malaria prevention methods [intermittent preventive treatment (IPT) and insecticide-treated nets (ITNs)] on cord blood malaria parasitaemia, as well as the effect of...

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A retrospective review of group B streptococcal infection in the Metro East area of the Western Cape province: 2010 to 2011

Item type: Journal Article • Journal: Southern African Journal of Infectious Diseases • Authors: L Frigati --- Department of Paediatrics, Tygerberg Children’s Hospital, J L van der Merwe --- Department of Obstetrics and Gynaecology, Tygerberg Hospital, J Harvey --- Head Statistician, Centre for Statistical Application, H Rabie --- Department of Paediatrics, Tygerberg Children’s Hospital, G Theron --- Department of Obstetrics and Gynaecology, Tygerberg Hospital, M F Cotton --- Department of Paediatrics, Tygerberg Children’s Hospital,

Effective strategies to prevent infant death rely on knowledge of prevalent pathogens. Recent publications have drawn attention to limited data on the contribution of group B streptococcal infection to neonatal and infant mortality in resource-restricted settings. The aim was to...

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Epidemiology of rubella disease in south-west nigeria: trends and projection from measles case-based surveillance data

Item type: Journal Article • Journal: Southern African Journal of Infectious Diseases • Authors: A A Fatiregun --- Department of Epidemiology and Medical Statistics, Faculty of Public Health, College of Medicine, A F Fagbamigbe --- Department of Epidemiology and Medical Statistics, Faculty of Public Health, College of Medicine, A S Adebowale --- Population Training and Research Training Unit, Faculty of Human and Social Sciences, North-West University,

Although surveillance for rubella does not exist in Nigeria, a measles case-based surveillance system was introduced in 2005 as one of the strategies for measles morbidity control, and included laboratory testing for confirmation of the disease. In this report, we...

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Well-child visits: perceptions of Nigerian mothers

Item type: Journal Article • Journal: Southern African Journal of Infectious Diseases • Authors: E O Sadoh --- Institute of Child Health, University of Benin, Nigeria B E Okungbowa --- Institute of Child Health, University of Benin, Nigeria

Well-child visits have been shown to be of beneft. In Nigeria, many children aged five years and younger do not receive any scheduled preventive healthcare services after the receipt of their last vaccination. This was a descriptive cross-sectional survey. Using...

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Pelagic eggs of marine fishes from Park Rynie, KwaZulu-Natal, South Africa: seasonal spawning patterns of the three most common species

Item type: Journal Article • Journal: African Zoology • Authors: A.D. Connell --- Environmentek, South Africa

For the period 1987 to 1998, pelagic eggs of marine fishes were collected from shelf waters at Park Rynie on the KwaZulu-Natal south coast. The three most numerous eggs collected were those of the mackerel Scomber japonicus,the sardine Sardinops sagax...

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Life history traits of Bathyclarias nyasensis (Siluroidei) in Lake Malawi

Item type: Journal Article • Journal: African Zoology • Authors: E. Kaunda --- Department of Ichthyology and Fisheries Science, South Africa T. Hecht --- Department of Ichthyology and Fisheries Science, South Africa

Life history traits, including age, growth, reproduction and diet of Bathyclarias nyasensis from Lake Malawi were studied between December 1996 and November 1998. Owing to reabsorp tion of pectoral spines with increasing fish size, and the relatively low number of...

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Dactylobiotus luci, a new freshwater tardigrade (Eutardigrada: Macrobiotidae) from theRwenzori Mountains, Uganda

Item type: Journal Article • Journal: African Zoology • Authors: Łukasz Kaczmarek --- Department of Animal Taxonomy and Ecology, Poland Łukasz Michalczyk --- Centre for Ecology, Evolution and Conservation, School of Biological Sciences, U.K. Hilde Eggermont --- Department of Biology, Limnology Unit, Belgium

A new freshwater eutardigrade, Dactylobiotus luci is described from a permanent marsh pool (Zaphania’s Pool) at 4225 m elevation in the Alpine zone of the Rwenzori Mountains, Uganda. The new species is most similar to D. dervizi Biserov, 1998 in...

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Investigation of a parasitic outbreak of Lernaea cyprinacea Linnaeus (Crustacea: Copepoda) in fish from Zimbabwe

Item type: Journal Article • Journal: African Zoology • Authors: Maxwel Barson [AN0001] Atridah Mulonga --- Department of Biological Sciences, Laboratory of Aquatic Ecology and Evolutionary Biology, Zimbabwe, Belgium Tamuka Nhiwatiwa --- Department of Biological Sciences, Laboratory of Aquatic Ecology and Evolutionary Biology, Zimbabwe, Belgium

Infestation of fish by the crustacean ectoparasite Lernaea cyprinacea Linnaeus, 1758 was investigated to establish the extent of infestation, potential effects of the parasite and its ecological adaptations. Fish samples were collected from impoundments in the Malilangwe Wildlife Reserve in...

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Does home range of the black-tailed tree rat (Thallomys nigricauda Thomas 1882) change with season along an aridity gradient?

Item type: Journal Article • Journal: African Zoology • Authors: Joy C. Coleman --- School of Biological and Conservation Sciences, South Africa Colleen T. Downs --- School of Biological and Conservation Sciences, South Africa

Home-range size may reflect the physiological state and energetic requirements of an individual. In the black-tailed tree rat (Thallomys nigricauda) we expected differences in the home-range size of populations in habitats of differing productivity, as measured along an aridity gradient,...

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Integration of non-communicable chronic diseases (NCDs) and HIV/AIDS and mental health care through the involvement of chronically ill patients using empowerment evaluation

Item type: Journal Article • Journal: South African Family Practice • Authors: Claire van Deventer --- Department of Family Medicine and Rural Health, South Africa

Background: The emphasis in health care in South Africa is gradually shifting to acknowledge the different roles patients have regarding their own care. There is, however, very little evidence of this practice and of related practical outcomes.

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Trophic relationships of hake (Merluccius capensis and M. paradoxus) and sharks (Centrophorus squamosus, Deania calcea and D. profundorum) in the Northern (Namibia) Benguela Current region

Item type: Journal Article • Journal: African Zoology • Authors: Johannes A Iitembu --- Department of Fisheries and Aquatic Sciences, Namibia Nicole B Richoux --- Department of Zoology and Entomology, South Africa

The trophic relationships of two hake species (Merluccius capensis and M. paradoxus) and three shark species (Centrophorus squamosus, Deania calcea and D. profundorum) were investigated using nitrogen and carbon stable isotope signatures (δ15N and δ13C) of their muscle tissues. The...

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“Broederbande” [brotherly bonds]: Afrikaner nationalist masculinity and African sexuality in the writings of Werner Eiselen's students, Stellenbosch University, 1930–1936

Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Andrew Bank --- History Department, South Africa

The importance of Willi Werner Max Eiselen (1899–1977) as the lecturer, supervisor and mentor of the first generation of volkekundiges at Stellenbosch University has been greatly underestimated. He supervised no fewer than 11 MA and doctoral theses in this field...

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Fathering volkekunde: race and culture in the ethnological writings of Werner Eiselen, Stellenbosch University, 1926–1936

Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Andrew Bank --- History Department, South Africa

Werner Willi Max Eiselen (1899–1977) has been celebrated for having consolidated the liberal functionalist school of social anthropology in South Africa. In the standard androcentric narrative, David Hammond-Tooke (1997) argues that during his decade-long tenure as head of “Bantology” at...

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Mining morals, muck and Akan gold in New York City

Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Jane Parish --- Sociology, United Kingdom

Among Akan spirit preachers at shrines in New York, gold and gold weights are at the centre of the creation of new moral topographies in a fluid and contested context. In a get-rich-quick New York marketplace, the preachers appeal to...

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Biophysical models of larval dispersal in the Benguela Current ecosystem

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: C Lett --- UMI IRD 209 UPMC UMMISCO, Centre de Recherche Halieutique Méditerranéenne et Tropicale, France CD van der Lingen --- Branch: Fisheries Management, Department of Agriculture, Forestry and Fisheries, South Africa BR Loveday --- Remote Sensing Group, Plymouth Marine Laboratory, UK CL Moloney --- Marine Research Institute and Department of Biological Sciences, South Africa

We synthesise and update results from the suite of biophysical, larval-dispersal models developed in the Benguela Current ecosystem. Biophysical models of larval dispersal use outputs of physical hydrodynamic models as inputs to individual-based models in which biological processes acting during...

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Spatio-temporal patterns of coral recruitment at Vamizi Island, Quirimbas Archipelago, Mozambique

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: E Sola --- School of Life Sciences, South Africa I Marques da Silva --- Faculdade de Ciências Naturais, Moçambique D Glassom --- School of Life Sciences, South Africa

Spatial and temporal patterns of recruitment of reef corals were assessed for the first time in Mozambique by deploying settlement plates at various spatio-temporal scales between October 2012 and October 2013. The abundance of juvenile corals (5−50 mm in diameter) was...

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Ethics and extinction: Micro versus macro appropriate technology

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: C. Verharen --- Department of Philosophy, F. Bugarin --- African Studies Department, D. Schwartzman --- Department of Biology (ret.), J. Tharakan --- Department of Chemical Engineering, B. Gutema --- Department of Philosophy, Ethiopia J. Fortunak --- Department of Chemistry & Pharmaceutical Sciences, G. Middendorf --- Department of Biology, USA

Ethical theory and technology practice raise two primary questions. First, what are the ethical principles driving sustainable appropriate technology? Second, what are the viable applications of those principles with respect to alternative appropriate technologies? The hypothesis of this study is...

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Assessing the value of wetlands to waterbirds: exploring a population-based index at flyway and regional levels

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Doug M Harebottle --- Animal Demography Unit, Department of Biological Sciences, South Africa Les G Underhill --- Animal Demography Unit, Department of Biological Sciences, South Africa

Traditionally, species richness, species diversity, total count, biomass, energy consumption and the Ramsar ‘1% threshold’ have been used to assess the importance of wetlands for waterbirds. Designation of wetlands of international importance (Ramsar sites) based on waterbirds has focused on...

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Person-environment fit, job satisfaction and intentions to leave: The moderating effect of leader empowering behaviour

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Kleinjan Redelinghuys --- Department of Industrial Psychology, Optentia Research Focus Area, South Africa Elrie Botha --- Department of Industrial Psychology, Optentia Research Focus Area, South Africa

This study sought to determine the possible indirect effect of person-environment (PE) fit on intentions to leave via job satisfaction and the moderating effect of leader empowering behaviour on job satisfaction and intentions to leave the work organisation. Participants were...

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The mediating effect of leader-member exchange between strengths use and work engagement

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Crizelle Els --- WorkWell Research Unit, South Africa Jolandie Viljoen --- School of Human Resource Sciences, South Africa Leon de Beer --- WorkWell Research Unit, South Africa Lelani Brand-Labuschagne --- WorkWell Research Unit, South Africa

This study investigated the mediating effect of leader-member exchange (LMX) (as perceived by subordinates) in the relationship between strengths use and work engagement. Participants numbered 213 employees in a South African financial organisation (females=53.10%, blacks=19.40%). Data on their perceptions of...

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Tomatis® Method comparative efficacy in promoting self-regulation in tertiary students: A systematic review

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Annelize Bonthuys --- School for Psychosocial Behavioural Sciences, North-West University:, South Africa Karel Botha --- School for Psychosocial Behavioural Sciences, North-West University:, South Africa

This systematic review sought to determine the evidence on how the Tomatis® Method, a sound stimulation intervention for improving listening, compares to other self-regulation interventions with tertiary students. We searched studies from the following data bases ‘Academic FileOne, CINAHL, Cochrane...

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Gender inequality dynamics in the prevention of a heterosexual HIV epidemic in sub-Saharan Africa

Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Jane Wathuta --- School of Law, University of the Witwatersrand, South Africa

This paper critiques the approach to the elimination of gender inequality as an HIV prevention strategy in the just ended era of the Millennium Development Goals, with the aim of contributing to the formulation of policy guidelines for sub-Saharan Africa...

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Carbon stocks of the terraces of the Lower Tana River floodplain and delta, Kenya, prior to conversion for biofuel production

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: LV Mukhwana --- Kenya Wetlands Biodiversity Research Team (KENWEB), Kenya Q Luke --- Kenya Wetlands Biodiversity Research Team (KENWEB), Kenya E Delmas --- Kenya Wetlands Biodiversity Research Team (KENWEB), Kenya K Otoi --- Kenya Wetlands Biodiversity Research Team (KENWEB), Kenya O Hamerlynck --- Kenya Wetlands Biodiversity Research Team (KENWEB), Kenya L Vandepitte --- Flanders Marine Institute (VLIZ), Belgium B Adkins --- Dadacha Consulting Ltd, Kenya

Few studies have addressed the terraces adjacent to the Tana River and delta. In May 2012 a survey assessed the woody vegetation of the terraces in anticipation of their conversion to a biofuel farm. The 64 000 hectares targeted by...

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Visual interruptions: a reflection on “Thermal optimum: time, intimacy and the elemental in the first thousand days of life”

Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Kharnita Mohamed --- Department of Social Anthropology, School of African and Gender Studies, Anthropology and Linguistics, South Africa

In this commentary, Kharnita Mohamed critically assesses Fiona C. Ross and Nicholas Eppel’s photo essay, “Thermal Optimum: Time, Intimacy and the Elemental in the First Thousand Days of Life.” The essay is published alongside this commentary.

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Annual cycle of the upper-ocean circulation and properties in the tropical western Indian Ocean

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: M Manyilizu --- Department of Oceanography, South Africa P Penven --- Ifremer, Univ. Brest, CNRS, IRD, Laboratoire dʹOcéanographie Physique et Spatiale (LOPS), France CJC Reason --- Department of Oceanography, South Africa

A regional ocean model was used to simulate the annual cycle of the upper-ocean dynamics and its influence on ocean properties in the tropical western Indian Ocean. Surface winds and heat fluxes from the National Centers for Environmental Prediction (NCEP)...

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Assessment of sweetpotato farming systems, production constraints and breeding priorities in eastern Tanzania

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Stephan Ngailo --- Sugarcane Research Institute, United Republic of Tanzania Hussein A Shimelis --- African Center for Crop Improvement, University of KwaZulu-Natal, South Africa Julia Sibiya --- African Center for Crop Improvement, University of KwaZulu-Natal, South Africa Kiddo Mtunda --- Sugarcane Research Institute, United Republic of Tanzania

Sweetpotato is an important food security crop in Tanzania. The crop is grown under diverse farming systems with very low yields. The objective of this study was to assess the present sweetpotato farming systems, farmers’ preferences, production constraints and breeding...

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Hotel industry expansion and sustainable development: A case study of Inle Lake, Myanmar

Item type: Journal Article • Journal: • Authors: Harald Buijtendijk --- Academy for Tourism, NHTV Breda University of Applied Sciences, Breda, The Netherlands Kristina Tschunkert --- School of International Development, University of East Anglia, Norwich, UK

This article examines how international hotel industry expansion affects sustainable development in the context of least developed countries. The study focuses on power asymmetries in the governance processes of hotel value chains. First it develops a model to analyse these...

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Multiple cardiovascular disease risk factors in rural Kenya: evidence from a health and demographic surveillance system using the WHO STEP-wise approach to chronic disease risk factor surveillance

Item type: Journal Article • Journal: South African Family Practice • Authors: PM Chege --- Department of Family Medicine, Kenya

Background: To describe the distribution of obesity, hypertension, dysglycaemia and dyslipidaemia (which are risk factors for cardiovascular disease) using a Health and Demographic Surveillance System (HDSS) site in western Kenya.

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Randomisation in a clinical trial: is it feasible in the Ebola crisis? If it is, then which method is suitable?

Item type: Journal Article • Journal: Southern African Journal of Infectious Diseases • Authors: Jesca Mercy Batidzirai --- School of Mathematics, Statistics and Computer Science, South Africa

Randomisation is an integral component of any sensible clinical trial. Randomisation is the only way we can be sure that the patients have been allocated into the treatment arms with as minimum bias as possible, and that the treatment arms...

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Mutual fund performance: a market efficiency perspective

Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Tim Verheyden --- Arabesque Asset Management Ltd, United Kingdom Lieven De Moor --- Faculty of Economic and Social Sciences and Solvay Business School, Belgium Rosanne Vanpée --- Faculty of Economics and Business, KU Leuven Campus Brussel, Belgium

This study reconciles existing literature on stock market efficiency and mutual fund performance by developing a framework to test whether fund managers are able to exploit market inefficiencies. We find a positive relationship between alpha and weak-form market efficiency. Most...

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Corporate social responsibility, market competition, and shareholder wealth

Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Doowon Ryu --- Business School, Korea University, Korea Doojin Ryu --- Department of Economics, Korea Joon Ho Hwang --- Business School, Korea University, Korea

This paper examines the association between corporate social responsibility (CSR), product market competition (PMC) and shareholder wealth by analysing CSR and market data from January 2006 to December 2012 (excluding 2009) in Korea. We focus on the role of PMC,...

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Psychological skills and mindfulness training effects on the psychological wellbeing of undergraduate music students: An exploratory study

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Barend JM Steyn --- Department of Sport and Leisure Studies, South Africa Margaretha H Steyn --- Department of Psychology, South Africa David JF Maree --- Department of Psychology, South Africa Clorinda Panebianco-Warrens --- Department of Music, South Africa

This study explored the efficacy of psychological skills and mindfulness training intervention on the psychological wellbeing of undergraduate music students. Participants were undergraduate music students (n = 36) from the Department of Music at a South African university, 21 of...

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Variation of physico-chemical parameters along a river transect through the Okavango Delta, Botswana

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: MJ Gondwe --- University of Botswana, Okavango Research Institute, Botswana WRL Masamba --- University of Botswana, Okavango Research Institute, Botswana

The Okavango Delta depends on water quantity and quality to sustain its ecosystem services. Whereas many studies have been carried out on its hydrology, few have been done on water quality in the delta. Water pH, electrical conductivity (EC), dissolved...

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Population parameters and exploitation rate of Sarotherodon galilaeus galilaeus (Cichlidae) in Lakes Doukon and Togbadji, Benin

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: D Lederoun --- Laboratory of Functional and Evolutionary Morphology, Belgium P Vandewalle --- Laboratory of Functional and Evolutionary Morphology, Belgium AA Brahim --- Laboratory of Hydrobiology and Aquaculture, Faculty of Agricultural Sciences, Benin J Moreau --- Department of Aquatic Environment, France PA Lalèyè --- Laboratory of Hydrobiology and Aquaculture, Faculty of Agricultural Sciences, Benin

Growth, mortality, recruitment and relative yield per recruit of Sarotherodon galilaeus galilaeus from Lakes Doukon and Togbadji were studied. Data on total length, total weight and sex were recorded on a monthly basis between January and December 2013 for S...

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Measures of weak noncompactness, nonlinear leray-schauder alternatives in banach algebras satisfying condition (p) and an application

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Amro Alsheikh Ali --- , , Tunisia Afif Ben Amar --- , , Tunisia

In this paper, we establish some new nonlinear Leray-Schauder alternatives for the sum and the product of weakly sequentially continuous operators in Banach algebras satisfying certain sequential condition (P). The main condition in our results is formulated in terms of...

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Monitoring eucalypt bud temperature using mobile temperature loggers

Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Robin AW Gardner --- Institute for Commercial Forestry Research, South Africa Michael J Savage --- Agrometeorology Discipline, School of Agricultural, Earth and Environmental Sciences, South Africa Isa Bertling --- Horticultural Science Discipline, School of Agricultural, Earth and Environmental Sciences, South Africa

Winter chilling is a key environmental trigger of floral induction in temperate Eucalyptus. Over the past two decades, considerable site × eucalypt flowering interaction research has been undertaken over a range of high elevation (>1 100 m asl) forestry sites in...

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Socio-demographic profiles and anthropometric status of 0- to 71-month-old children and their caregivers in rural districts of the Eastern Cape and KwaZulu-Natal provinces of South Africa

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Cm. Smuts --- Nutritional Intervention Research Unit, M. Faber --- Nutritional Intervention Research Unit, Se. Schoeman --- Nutritional Intervention Research Unit, Ja. Laubscher --- Biostatics Unit, A. Oelofse --- Centre for Nutrition, Ajs. Benadé --- Cape Peninsula University of Technology, Ma. Dhansay --- Nutritional Intervention Research Unit,

Abstract

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The development of a preliminary regression equation for estimating the weight of black South African paraplegic males using anthropometric measurements in Tshwane, South Africa

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: H. Snyman --- Association for Dietetics in South Africa, Mg. Herselman --- Division of Human Nutrition, D. Labadarios --- Division of Human Nutrition,

Abstract

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The risk of developing malnutrition in people living with HIV/AIDS: Observations from six support groups in Botswana

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Ms. Nnyepi --- Department of Home Economics Education, Botswana

Objectives: The objectives of this study were 1) to determine the proportion of people living with HIV/AIDS (PLWHA) at risk of developing malnutrition, 2) to determine the prevalence of malnutrition (BMI < 18.5 kg/m2), and 3) to describe the dietary...

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Risk factors of poor anthropometric status in children under five years of age living in rural districts of the Eastern Cape and KwaZulu-Natal provinces, South Africa

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Ms Lesiapeto --- Centre for Excellence in Nutrition, South Africa Cm Smuts --- Centre for Excellence in Nutrition, South Africa Sm Hanekom --- Centre for Excellence in Nutrition, South Africa J Du Plessis --- Department of Statistics, South Africa M Faber --- Nutritional Intervention Research Unit, South Africa

Objectives: Factors associated with children’s anthropometric status were determined.

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Intestinal failure in childhood

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: O. Goulet --- Integrated program of Intestinal Failure, Home Parenteral Nutrition and Liver-Intestinal Transplantation, France

Intestinal failure (IF) requires the use of parenteral nutrition (PN) for as long as it persists and in case of irreversible IF may be an indication for intestinal transplantation (ITx). Biological evaluation of IF is becoming possible with the use...

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Perceptions of body size and its association with HIV/AIDS

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: T. Matoti-Mvalo --- Diva Nutritional Products, T. Puoane --- School of Public Health,

Objective: To explore the perception among black South African women that people who are thin are infected with HIV or have AIDS.

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Probiotics, with special emphasis on their role in the management of irritable bowel syndrome

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: C Stevenson --- Division of Human Nutrition, South Africa R Blaauw --- Division of Human Nutrition, South Africa

Probiotics are live microorganisms, and when administered in adequate amounts, bestow beneficial effects on the host. The therapeutic and preventative application of probiotics in several disorders is receiving increasing attention, and this is especially true when gastrointestinal microbiota is thought...

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Malnutrition in the acutely ill patient: is it more than just protein and energy?

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Pe Wischmeyer --- Professor of Anaesthesiology, University of Colorado,

Malnutrition has traditionally been thought to involve deficiencies in protein and energy (macronutrients); however, we know that specific key nutrients, when deficient. can also lead to significant morbidity and mortality. Large studies performed with replacement of single nutrients, such as...

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Genotype-based personalised nutrition for obesity prevention and treatment: are we there yet?

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: M. Senekal --- Associate Professor; Head: Division of Human Nutrition; Department of Human Biology,

Interactions between genotype and dietary intake include genetic moderation of the effect of dietary intake on disease development (nutrigenetics). Research on nutrigenetics has focused mainly on single-nucleotide polymorphisms (SNPs) and supports the notion that interactions between genes, diet, other lifestyle...

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Reproducibility of two, three, four and five 24-hour recalls in peri-urban African adolescents in the North West province

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: D. Rankin --- Centre of Excellence in Nutrition, Ue MacIntyre --- Institute for Human Nutrition, Sm Hanekom --- Centre of Excellence in Nutrition, Hs Steyn --- Statistical Consultation Services, Hh Wright --- Centre of Excellence in Nutrition,

Background: The objective was to determine the reproducibility of two, three, four and five repeated 24-hour recalls among peri-urban African adolescents.

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Knowledge and attitudes of nursing staff and mothers towards kangaroo mother care in the eastern sub-district of Cape Town

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: N. Solomons --- Division of Dietetics, C. Rosant --- Department of Health,

Objectives: To determine the knowledge and attitude of nursing staff and mothers towards kangaroo mother care (KMC) in the eastern sub-district of Cape Town.

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Weight gain, physical activity and dietary changes during the seven months of first-year university life in Malawi

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: G. Takomana --- Department of Home Economics and Human Nutrition, Aa Kalimbira --- Department of Home Economics and Human Nutrition,

Objective: The objective of the study was to assess weight gain, physical activity and dietary changes during the first year of university life in Malawi.

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Nutrition management in the adult patient with Crohn’s disease

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: A. Basson --- Lecturer and Hospital Student Internship Supervisor,

Malnutrition, nutrient deficiencies and osteoporosis are common in patients with Crohn’s disease, regardless of disease activity. While the role of diet in the pathogenesis of the disease remains inconclusive, upon diagnosis, nutrition therapy plays an integral role in patient care...

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Tuck-shop purchasing practices of Grade 4 learners in Pietermaritzburg and childhood overweight and obesity

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Nl Wiles --- Lecturer, Dietetics and Human Nutrition, Jm Green --- Senior Research Associate, Rural Resource Management, Fj Veldman --- Associate Professor, Dietetics and Human Nutrition,

Objectives: To determine the anthropometric characteristics of Grade 4 learners in relation to their tuck-shop purchasing practices.

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The influence of socio-demographic factors on the nutritional status of children in the Stellenbosch area, Western Cape

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Ap Kirsten --- Division of Human Nutrition, D Marais --- Division of Applied Health Sciences, C Schübl --- Division of Human Nutrition, Faculty of Medicine and Health Sciences,

Objectives: To determine the prevalence of overweight and obesity, as well as socio-demographic risk factors associated with childhood overweight and obesity in the Stellenbosch area, Western Cape province.

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Adaptation of the RenalSmart® web-based application for the dietary management of patients with diabetic nephropathy

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: N Esau --- Department of Human Nutrition, N Koen --- Division of Human Nutrition, Mg Herselman --- Division of Human Nutrition, Faculty of Health Sciences,

Objectives: The aim of this study was to develop and test a web-based application for the dietary management of patients with diabetic nephropathy.

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Overweight, obesity and underweight in nurses in Vhembe and Capricorn districts, Limpopo

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Dt Goon --- Centre for Biokinetics, Recreation and Sport Science, Ms Maputle --- Department of Advanced Nursing and Science, A Olukoga --- Department of Public Health, R Lebese --- Department of Advanced Nursing and Science, Lb Khoza --- Department of Advanced Nursing and Science, Fc Ayanwu --- Department of Public Health,

Background: In South Africa, anecdotal evidence concerning the prevalence of overweight and obesity in nurses is alarming, but no scientific studies have confirmed this notion. This study aimed to determine the prevalence of underweight, overweight and obesity in black nurses...

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The prevalence of underweight, overweight and obesity in a multiracial group of urban adolescent schoolchildren in the Cape Metropole area of Cape Town

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: S.-M. Van Niekerk --- Physiotherapy Division, Faculty of Medicine and Health Sciences, K. Grimmer --- Physiotherapy Division, Faculty of Medicine and Health Sciences, Q. Louw --- Physiotherapy Division, Faculty of Medicine and Health Sciences,

Objective: The objective was to determine the prevalence of underweight, overweight and obesity in high school learners in the Cape Town area.

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Food avoidance in irritable bowel syndrome leads to a nutrition-deficient diet

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: C. Stevenson --- Division of Human Nutrition, R. Blaauw --- Division of Human Nutrition, E. Fredericks --- Department of Biochemistry and Microbiology, J. Visser --- Division of Human Nutrition, S. Roux --- Department of Biochemistry and Microbiology,

Objective: The objective was to assess the dietary intake of subjects with irritable bowel syndrome (IBS) and to compare it to that of international recommendations. The hypothesising assumption of this study was that a situation in which subjects insist that...

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Determinants of obesity and perception of weight in hypertensive patients in rural South Africa

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Pr Duncan --- Academic Clinical Fellow and General Practice Trainee, Bristol Ld Howe --- MRC Integrative Epidemiology Unit University of Bristol, Bristol Z. Manukusa --- Manguzi Hospital, Durban S. Purdy --- Academic Clinical Fellow and General Practice Trainee, Bristol

Objective: The objective of the study was to identify factors associated with being overweight or obese, and perceptions of weight by hypertensive patients living in rural South Africa.

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Under- and overnutrition and evidence of metabolic disease risk in rural black South African children and adolescents

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Tm Pedro --- MRC/Wits Developmental Pathways for Health Research Unit Department of Paediatrics, K. Kahn --- MRC/Wits Rural Public Health and Health Transitions Research Unit (Agincourt), Jm Pettifor --- MRC/Wits Developmental Pathways for Health Research Unit Department of Paediatrics, Sm Tollman --- MRC/Wits Rural Public Health and Health Transitions Research Unit (Agincourt), Sa Norris --- MRC/Wits Developmental Pathways for Health Research Unit Department of Paediatrics,

Objectives: The objective was to determine the prevalence of under- and overnutrition, as well as evidence of metabolic disease risk in rural black South African children and adolescents.

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Abnormal eating attitudes and weight-loss behaviour of adolescent girls attending a “traditional” Jewish high school in Johannesburg, South Africa

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: J. Visser --- Division of Human Nutrition, Faculty of Medicine and Health Sciences, T. Notelovitz --- Division of Human Nutrition, Faculty of Medicine and Health Sciences, Cp Szabo --- Department of Psychiatry, Faculty of Health Sciences, N. Fredericks --- Division of Human Nutrition, Faculty of Medicine and Health Sciences,

Objectives: This study aimed to determine the prevalence of abnormal eating attitudes and weight-loss behaviour in female Jewish adolescents. Teachers’ awareness of these factors and their attitudes towards a school programme to address these were also investigated.

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Overweight and obesity in six-year-old children in 4^th and 5^th quintile schools in Mangaung, South Africa

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: L Van den Berg --- Department of Nutrition and Dietetics, School of Allied Health Professions, Faculty of Health Sciences, L Meko --- Department of Nutrition and Dietetics, School of Allied Health Professions, Faculty of Health Sciences,

Objective: Weight status at age six years has been identified as an important predictor of overweight and obesity in adolescence, which, in turn, tracks into adulthood, increasing the risk of future metabolic diseases. This study aimed to describe the prevalence...

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Electricity insufficiency in Africa: A product of inadequate manufacturing capacity

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Williams S. Ebhota --- Discipline of Mechanical Engineering, South Africa Freddie L. Inambao --- Discipline of Mechanical Engineering, South Africa

Energy availability is fundamental and crucial for human survival and for national economic development. Energy consumption per capita of a country or region is a measure of quality of life and industrialisation of a country or region. This to certain...

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The nutritional management of short bowel syndrome in a very low-birthweight neonate

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Lize Rossouw --- Chief Dietician, Elizabeth van der Merwe [cor1]

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South African seed oils are safe for human consumption

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: M Opperman --- Functional Foods Research Unit, Department of Biotechnology and Consumer Science, AJS Benadé --- Functional Foods Research Unit, Department of Biotechnology and Consumer Science, CF Abrecht --- Cancer Association of South Africa, LL Matsheka --- Functional Foods Research Unit, Department of Biotechnology and Consumer Science,

Objectives: A diet that is high in fat and low in carbohydrates is advocated in the recently published The Real Meal Revolution. A suggestion was made in this publication that seed oils are toxic. The authors stated that available seed...

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Summer and winter differences in zooplankton biomass, distribution and size composition in the KwaZulu-Natal Bight, South Africa

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: M Pretorius --- University of the Western Cape, South Africa JA Huggett --- Branch: Oceans and Coasts, Department of Environmental Affairs, South Africa MJ Gibbons --- University of the Western Cape, South Africa

Zooplankton biomass and distribution in the KwaZulu-Natal Bight were investigated in relation to environmental parameters during summer (January–February 2010) and winter (July–August 2010). Mean zooplankton biomass was significantly higher in winter (17.1 mg dry weight [DW] m–3) than in summer...

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Species composition, abundance and biomass of microphytoplankton in the KwaZulu-Natal Bight on the east coast of South Africa

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: JS van der Molen --- Council for Scientific and Industrial Research, South Africa UM Scharler --- School of Life Sciences, South Africa D Muir --- Medgar Evers College, City University of New York, USA

Nearshore marine environments are influenced by an array of variables that can either be land-derived or of marine origin, and nearshore phytoplankton communities may differ in their taxonomic composition and biomass in response to such variables. The KwaZulu-Natal Bight (hereafter...

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Detrimental role of childhood obesity in adolescence and adulthood: developing nation’s perspective

Item type: Journal Article • Journal: South African Family Practice • Authors: Saurabh RamBihariLal Shrivastava --- Department of Community Medicine, India Prateek Saurabh Shrivastava --- Department of Community Medicine, India Jegadeesh Ramasamy --- Department of Community Medicine, India

Worldwide, over the years, a significant hike in the prevalence of overweight and obesity has been observed among children, adolescents, and adult age-group individuals. In contrast to the previous beliefs that overweight and obesity are a major public health concern...

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More than scales and tape measures needed to address obesity in South Africa

Item type: Journal Article • Journal: South African Family Practice • Authors: R Ramlal --- Department of Family Medicine, South Africa RD Govender --- Department of Family Medicine, South Africa

Obesity is an emerging public health problem worldwide increasing from 857 million in 1980 to 2.1 billion by 2013. A study was done on a sample of 100 obese and overweight patients with a body mass index (BMI) above 25 kg/m2...

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Blue whales Balaenoptera musculus in offshore waters of Kenya

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: R Barber --- Gardline Environmental Ltd, UK I Sikora --- Gardline Environmental Ltd, UK M Nimak-Wood --- Gardline Environmental Ltd, UK

Observations of blue whales were made in Kenyan offshore waters during a seismic survey from September 2014 to January 2015. These represent the first live at-sea sightings of blue whales reported from Kenyan waters. All 30 sightings occurred between September...

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Distribution and seasonal abundance of large cetaceans in the Durban whaling grounds off KwaZulu-Natal, South Africa, 1972–1975

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: KP Findlay --- Mammal Research Institute Whale Unit, University of Pretoria, South Africa PB Best --- Mammal Research Institute Whale Unit, University of Pretoria, South Africa

Daily charts of the aerial search effort (432 206 nautical miles) of the Union Whaling Company and 1 099 sightings of 10 497 whales were available from 628 flights off Durban between 1972 and 1975. Densities of whales were analysed...

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Family structure and functioning: Influences on adolescents psychological needs, goals and aspirations in a South African setting

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Eugene Lee Davids --- Child & Family Studies Programme, Department of Social Work, South Africa Jill Ryan --- Child & Family Studies Programme, Department of Social Work, South Africa Zeenat Yassin --- Child & Family Studies Programme, Department of Social Work, South Africa Suzette Hendrickse --- Child & Family Studies Programme, Department of Social Work, South Africa Nicolette Vanessa Roman --- Child & Family Studies Programme, Department of Social Work, South Africa

This study aimed to determine the effects of family structure and functioning on basic psychological need fulfilment, life goals and aspirations of adolescents in a South African setting. Participants were 457 adolescent learners (Mage = 16.31, SD = 1.45, females...

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The influence of transformational leadership on organisational citizenship behaviour in a South African combat military unit

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Oscar Sechudi --- South African Army, South Africa Benny Olivier --- Department of Industrial and Organisational Psychology, South Africa

This study investigated perceived individual transformational leadership (TL) to influence behaviours on follower organisational citizenship behaviour (OCB) in a South African combat military unit. A sample of 300 of 567 military followers (males = 78%; black Africans = 82%) completed...

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Postoperative neuromuscular function following non-depolarising muscle blockade in patients at Inkosi Albert Luthuli Central Hospital, Durban

Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: JRR Invernizzi --- Discipline of Anaesthesiology & Critical Care, South Africa PD Gopalan --- Discipline of Anaesthesiology & Critical Care, South Africa

Background: Residual neuro-muscular blockade after the end of general anaesthesia may occur when non-depolarising muscle relaxant (NDMR) drugs are used. Train-of-four (TOF) stimulation is used to quantify the degree of residual paralysis, with a TOF ratio of less than 0.9...

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The meaning of compliance with land and labour legislation: understanding justice through farm workers’ experiences in the Eastern Cape

Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Femke Brandt --- Centre for African Studies, South Africa Fani Ncapayi --- Centre for African Studies, South Africa

This paper explores the social meanings and uses of formal labour legislation on commercial farms in the Eastern Cape. Farm workers’ and dwellers’ experiences expose ongoing land and labour struggles on South Africa’s commercial farms. We focus on the ways...

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Wetland hydrology indicators of Maluti Mountains wetlands in Lesotho

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Botle E Mapeshoane --- Department of Soil, Crop and Climate Sciences, South Africa Cornelius W van Huyssteen --- Department of Soil, Crop and Climate Sciences, South Africa

Hydric soil morphological features are generally accepted to be reliable indicators of wetland hydrology. The relationship between soil water saturation and soil morphological indices is evaluated in this study from bi-weekly water level data taken over a period of two...

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Long-term landscape changes in vegetation structure: fire management in the wetlands of KwaMbonambi, South Africa

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: LB Luvuno --- School of Life Sciences, South Africa DC Kotze --- Centre for Water Resources Research, School of Agricultural, Earth and Environmental Sciences, South Africa KP Kirkman --- School of Life Sciences, South Africa

In wetlands the effects of fire on vegetation dynamics are somewhat uncertain. A change detection analysis in the herbaceous wetlands of KwaMbonambi, South Africa, which were subject to frequent fires, revealed that in 1937 the study area comprised grassland (69%),...

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Psychosocial well-being of people living with HIV and the community before and after a HIV stigma-reduction community “hub” network intervention

Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Catharina D Prinsloo --- Africa Unit for Transdisciplinary Health Research (AUTHeR), Faculty of Health Sciences, South Africa Minrie Greeff --- Africa Unit for Transdisciplinary Health Research (AUTHeR), Faculty of Health Sciences, South Africa Annamarie Kruger --- Africa Unit for Transdisciplinary Health Research (AUTHeR), Faculty of Health Sciences, South Africa Suria Ellis --- Unit for Business Mathematics and Informatics, South Africa

The purpose of the research was to determine whether an HIV stigma-reduction community “hub” network intervention in a South African urban area would bring about a difference in the psychosocial well-being of people living with HIV (PLWH), as well as...

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Endogeneity in CEO power: A survey and experiment

Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Frank Li --- Finance, Canada

The endogeneity problem has always been one, if not the only, obstacle to understanding the true relationship between different aspects of empirical corporate finance. Variables are typically endogenous, instruments are scarce, and causality relations are complicated. As the first attempt...

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The potential of replacing conventional dairy supplements with forage legume-based diets in Zimbabwe’s smallholder dairy sector

Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Lovemore C Gwiriri --- International Livestock Research Institute, Zimbabwe Godfrey Manyawu --- International Livestock Research Institute, Zimbabwe Promise B Mashanda --- Department of Animal Science, Zimbabwe Irenie Chakoma --- International Livestock Research Institute, Zimbabwe Siboniso Moyo --- International Livestock Research Institute, Ethiopia Charles Chakoma --- Independent, Zimbabwe Hazel Sethaunyane --- Chikwaka-Kubatana Dairy Co-operative, Zimbabwe Venancio E Imbayarwo-Chikosi --- Department of Animal Science, Zimbabwe Sikhalazo Dube --- International Livestock Research Institute, Zimbabwe Barbara V Maasdorp --- Department of Crop Science, Zimbabwe

The effect of replacing commercial supplements with isoenergetic and isonitrogenous velvet bean-, cowpeaand lablab-based supplements on milk yield, milk quality and economic returns in smallholder crossbred dairy cows was investigated in the 2013 and 2014 dry seasons. Using 3 ×...

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Forage seed production and trade as a pathway out of poverty in the smallholder sector: lessons from the Zimbabwe Crop Livestock Integration for Food Security (ZimCLIFS) project

Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Irenie Chakoma --- International Livestock Research Institute, Zimbabwe Lovemore C Gwiriri --- International Livestock Research Institute, Zimbabwe Godfrey Manyawu --- International Livestock Research Institute, Zimbabwe Sikhalazo Dube --- International Livestock Research Institute, Zimbabwe Mercy Shumba --- Community Technology Development Organisation, Zimbabwe Aleck Gora --- Cluster Agricultural Development Services, Zimbabwe

The major challenge to adoption of improved forage technologies in the smallholder farming sector is poor accessibility to seed of improved cultivars. Since 2012, the Zimbabwe Crop Livestock Integration for Improved Food Security (ZimCLIFS) project set out to address such...

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Promoting the use of home-mixed supplements as alternatives to commercial supplements in smallholder beef production systems in the subhumid region of Zimbabwe

Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Irenie Chakoma --- International Livestock Research Institute, Zimbabwe Godfrey Manyawu --- International Livestock Research Institute, Zimbabwe Lovemore C Gwiriri --- International Livestock Research Institute, Zimbabwe Siboniso Moyo --- International Livestock Research Institute, Ethiopia Sikhalazo Dube --- International Livestock Research Institute, Zimbabwe Venancio E Imbayarwo-Chikosi --- Department of Animal Science, Zimbabwe Tinyiko E Halimani --- Department of Animal Science, Zimbabwe Charles Chakoma --- , Zimbabwe Barbara V Maasdorp --- Department of Crop Science, Zimbabwe Victor Buwu --- Department of Animal Science, Zimbabwe

The economic and performance effect of supplementing smallholder cattle by substituting commercial feed with iso-nitrogenous and iso-energetic diets based on alternative protein sources was investigated in two trials. In trial 1, three diets (commercial concentrate, commercial concentrate partially substituted with...

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Monitoring the recovery of a previously exploited surf-zone fish community in the St Lucia Marine Reserve, South Africa, using a no-take sanctuary area as a benchmark

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: BQ Mann --- Oceanographic Research Institute, South Africa H Winker --- South African National Biodiversity Institute, South Africa JQ Maggs --- Oceanographic Research Institute, South Africa SN Porter --- Oceanographic Research Institute, South Africa

Limiting accessibility to a fishing area can reduce fishing effort effectively and may therefore promote local recovery of depleted stocks. In January 2002, beach driving was banned in South Africa, thereby reducing angler access to large areas of the coastline,...

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Happiness and life satisfaction in Rwanda

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Kayonda Hubert Ngamaba --- School of Psychological Sciences, United Kingdom

This study investigated predictors of happiness and life satisfaction in Rwanda. Data from the World Values Survey and gathered from 3 030 Rwandese (age ranging 16 to 90 years, mean age = 34.2, SD = 12.7; females = 50.5%) were...

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The practice of humanitarian work psychology

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Tinashe Timothy Harry --- Department of Industrial Psychology, South Africa Nicole Dodd --- Department of Industrial Psychology, South Africa

Humanitarian work psychology (HWP) seeks to improve the welfare of workers who provide a broad range of support to survivors of calamities both natural and man-made. It is an emerging interdisciplinary field of practice spanning expertise from many psychological fields...

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Grey Crowned Crane threat assessment around the wetlands of eastern Uganda

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: William Olupot --- Nature and Livelihoods, Uganda

The Grey Crowned Crane Balearica regulorum was uplisted to globally Endangered in 2012. There is urgent need to determine the threats they face at local levels for their conservation. I conducted formal point-count surveys around the wetlands of eastern Uganda...

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Physical and hydrological properties of peatland substrates from different hydrogenetic wetland types on the Maputaland Coastal Plain, South Africa

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Franziska Faul --- Faculty of Earth and Environmental Sciences, Germany Marvin Gabriel --- Faculty of Life Science, Germany Niko Roßkopf --- Faculty of Life Science, Germany Jutta Zeitz --- Faculty of Life Science, Germany Cornelius W van Huyssteen --- Department of Soil, Crop and Climate Sciences, South Africa Mathilde L Pretorius --- Centre for Environmental Management, South Africa Piet-Louis Grundling --- Centre for Environmental Management, South Africa

The Maputaland Coastal Plain in KwaZulu-Natal province is home to 60% of all peatlands occurring in South Africa. These ecosystems are increasingly threatened by unsustainable agricultural utilisation, a growing population and climate change. The aim of the study was, therefore,...

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Tillage and crop rotation effects on carbon sequestration and aggregate stability in two contrasting soils at the Zanyokwe Irrigation Scheme, Eastern Cape province, South Africa

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Arnold N Njaimwe --- Department of Agronomy, Faculty of Science and Agriculture, South Africa Pearson NS Mnkeni --- Department of Agronomy, Faculty of Science and Agriculture, South Africa Cornelius Chiduza --- Department of Agronomy, Faculty of Science and Agriculture, South Africa Pardon Muchaonyerwa --- School of Agricultural, Earth and Environmental Sciences, South Africa Isaiah IC Wakindiki --- Department of Agronomy, Faculty of Science and Agriculture, South Africa

Intensive tillage and monocropping have adversely affected the quality of soils in South Africa through accelerated loss of soil organic matter. Two clay loam soils, a Bonheim at Burnshill and a Shortlands at Lenye, at the Zanyokwe Irrigation Scheme in...

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The intersection of antiretroviral therapy, peer support programmes, and economic empowerment with HIV stigma among HIV-positive women in West Nile Uganda

Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Nicole Coffey Kellett --- Department of Anthropology, USA Katherine Gnauck --- University of New Mexico Health Sciences Center, University of New Mexico, USA

HIV stigma remains a major problem of the AIDS epidemic in sub-Saharan Africa. Women fear impending social stigma including blame, isolation and abuse. HIV infection and HIV stigma interact cyclically, creating and reinforcing economic and social exclusion for individuals living...

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Dealing with disclosure: Perspectives from HIV-positive children and their older carers living in rural south-western Uganda

Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Esther Dusabe-Richards --- Department of International Public Health, United Kingdom Rwamahe Rutakumwa --- Medical Research Council, Uganda Flavia Zalwango --- Medical Research Council, Uganda Allen Asiimwe --- Medical Research Council, Uganda Elvis Kintu --- Medical Research Council, Uganda Fatuma Ssembajja --- Medical Research Council, Uganda Janet Seeley --- Medical Research Council, Uganda

There are limited data on the challenges faced by carers, in particular older carers, in managing the difficult task of status disclosure for HIV-positive children. We report findings from qualitative interviews with 18 care dyads of older people and HIV-positive...

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“Slow marriage,” “fast bogadi”: change and continuity in marriage in Botswana

Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Jacqueline Solway --- Department of International Development Studies and Department of Anthropology, Canada

Classic work on Tswana marriage emphasises that it is a process of becoming, involving a series of rituals and prestations characterised by a long period of socially productive ambiguity in which the status of the union, the spouses, their children...

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Traditions of kinship, marriage and bridewealth in southern Africa

Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Adam Kuper --- Anthropology, United Kingdom

In the pre-colonial period, and in most parts of Southern Africa throughout the nineteenth and well into the twentieth century, marriage, the family and the homestead were embedded in economic, political and religious institutions. The household was the hub of...

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Marriage as an end or the end of marriage? Change and continuity in Southern African marriages

Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Julia Pauli --- Institute of Social and Cultural Anthropology, Germany Rijk van Dijk --- African Studies Centre, The Netherlands

Marriage used to be widespread and common throughout Southern Africa. However, over the past decades marriage rates have substantially declined in the whole region. Marriage has changed from a universal rite of passage into a conspicuous celebration of middle class...

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The struggle for marriage: elite and non-elite weddings in rural Namibia

Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Julia Pauli --- Institute of Social and Cultural Anthropology, University of Hamburg, Germany Francois Dawids --- Master of the Post Office, Namibia

Namibian weddings have become lavish and expensive rituals. Recent studies have discussed how these marriage transformations are linked to late capitalism and the spread of modernisation ideologies. Much of this research concludes that marriage has become a middle class institution,...

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The tent versus lobola: marriage, monetary intimacies and the new face of responsibility in Botswana

Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Rijk van Dijk --- African Studies Centre Leiden, The Netherlands

While it has become common knowledge that in many parts of Africa — including Botswana — weddings and marital arrangements in general have increasingly become subject to consumerist desires of style and glamour, much less is known about how such...

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The number of stocks required for effective portfolio diversification: the South African case

Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: David Bradfield --- Department of Statistical Sciences, South Africa Brian Munro --- Multi Asset Department, Cadiz Asset Management, South Africa

This article considers several insights surrounding the number of stocks needed in portfolios in South Africa to achieve effective risk reduction. The majority of studies in the literature use equally-weighted portfolio construction schemes and conclude that at most 20 stocks...

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Nutrient intake, digestibility and rumen fermentation characteristics of sheep fed on selected forage sweet potato cultivars

Item type: Journal Article • Journal: East African Agricultural and Forestry Journal • Authors: R. Irungu --- Kenya Agricultural and Livestock Research Organization, Kenya P.K. Migwi --- Egerton University, Kenya J.N. Kariuki --- Kenya Agricultural and Livestock Research Organization, Kenya A.Y. Guliye --- Egerton University, Njoro, Kenya

Selected forage sweet potato cultivars (Ipomoea batatas Lam) have superior forage characteristics, have high rates of regeneration after harvest, are able to smother weeds and can tolerate diseases and moisture stress. However, little information is documented on their feeding value...

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The hospitality of Nepali tea houses: redefining the boundaries of empowerment

Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Andrew C MacLaren --- Stenden University of Applied Sciences, The Netherlands Carolyn L McMillan --- Stenden University of Applied Sciences, The Netherlands Kevin D O'Gorman --- Stenden University of Applied Sciences, The Netherlands

The paper reports on research which shows that in an environment where women traditionally represent the marginalised population, the female tea house owners/managers display higher levels of economic, social and psychological empowerment. It illustrates how commercial hospitality has catalysed social...

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The role of employee wellness programme in the hospitality industry: a review of concepts, research, and practice

Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Tingting (Christina) Zhang --- Department of Human Sciences, USA Jay Kandampully --- Department of Human Sciences, USA Hye Yoon Choi --- Department of Human Sciences, USA

In the hospitality industry, employees are critical to firm success, through their intimate interactions with customers to create memorable experiences and relationships. A nascent strategy adopted by many hospitality firms seeks to increase employee engagement and commitment through employee wellness...

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Can a luxury hotel compete without a spa facility?—Opinions from senior managers of London's luxury hotels

Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Andy Heyes --- Hospitality Management, University of Derby, United Kingdom Colin Beard --- Sheffield Business School, Sheffield Hallam University, United Kingdom Sjoerd Gehrels --- Academy of International Hospitality Research, Stenden University of Applied Sciences, The Netherlands

The development of the wellness facility within the luxury hotel sector around the world has been evident, with many professionals believing that spas are an expected element within luxury hotels. This paper has been written to provide further consideration for...

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Hotel industry expansion and sustainable development: A case study of Inle Lake, Myanmar

Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Harald Buijtendijk --- Academy for Tourism, The Netherlands Kristina Tschunkert --- School of International Development, UK

This article examines how international hotel industry expansion affects sustainable development in the context of least developed countries. The study focuses on power asymmetries in the governance processes of hotel value chains. First it develops a model to analyse these...

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An early Pliocene (5.1 Ma) fossil frog community from Langebaanweg, south-western Cape, South Africa

Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Thalassa Matthews --- , South Africa Eduard van Dijk --- , South Africa Dave L. Roberts --- , South Africa Roger M.H. Smith --- , South Africa

The 5.1 million year old fossil site of Langebaanweg (LBW) has provided a wealth of information on the evolution of west coast ecosystems along the southern west coast of South Africa and numerous taxa, including small and large mammals, and...

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Happiness and health behaviours among university students from 24 low, middle and high income countries

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Karl Peltzer --- HIV/AIDS/STI/and TB (HAST), Human Sciences Research Council, South Africa Supa Pengpid --- University of Limpopo, South Africa Tholene Sodi --- University of Limpopo, South Africa Sonia Carolina Mantilla Toloza --- Departamento de Fisioterapia. Facultad de Salud, Colombia

The aim of this study was to examine health behaviours and happiness and associated factors in low, middle and high income countries. In a cross-sectional survey, 17 508 undergraduate university students (mean age 20.9, SD = 2. 8) from 25...

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Correlates of postnatal depression among women in Zimbabwean semi-urban and rural settings

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: James January --- Department of Community Medicine, College of Health Sciences, Namatai Mutamba --- Department of Community Medicine, College of Health Sciences, Julita Maradzika --- Department of Community Medicine, College of Health Sciences,

This study explored antecedents to postnatal depression and its prevalence in semi-urban and rural Zimbabwean communities. 115 women completed the Edinburgh Postnatal Depression Scale. The mean age of participants was 25.8 years (SD = 5.4 years). Descriptive statistical analysis indicated...

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The eventual outcome of patients who had lower limb amputations due to peripheral vascular disease at Pelonomi Hospital, Bloemfontein

Item type: Journal Article • Journal: South African Family Practice • Authors: C De Klerk --- Faculty of Health Sciences, School of Medicine, South Africa G Du Plessis --- Faculty of Health Sciences, School of Medicine, South Africa JJ Fourie --- Faculty of Health Sciences, School of Medicine, South Africa A O’Neill --- Faculty of Health Sciences, School of Medicine, South Africa SJA Smit --- Faculty of Health Sciences, Department of Surgery, South Africa G Joubert --- Faculty of Health Sciences, Department of Biostatistics, South Africa

Background: Peripheral vascular disease (PVD) presenting with irreversible lower limb pathology has a high morbidity and mortality rate. This study aimed to determine the outcome of patients who underwent lower limb amputations (LLAs) because of PVD at Pelonomi Hospital, Bloemfontein,...

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Movement patterns and survival estimates of Blue Cranes in the Western Cape

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Julia L van Velden --- Percy FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, University of Cape Town, South Africa Res Altwegg --- Department of Statistical Sciences, South Africa Kevin Shaw --- CapeNature, South Africa Peter G Ryan --- Percy FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, University of Cape Town, South Africa

The Western Cape population of Blue Cranes Anthropoides paradiseus is the species’ largest and most stable population. How this population utilises the agricultural landscape of the Western Cape, how far individuals disperse and the connectivity between subpopulations is unknown. Basic...

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Habitat preference of the eastern population of the Short-clawed Lark Certhilauda chuana in the Limpopo province, South Africa

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Sean M Marr --- Department of Biodiversity, School of Molecular and Life Sciences, South Africa Joseph I Grosel --- Department of Biodiversity, School of Molecular and Life Sciences, South Africa G Derek Engelbrecht --- Department of Biodiversity, School of Molecular and Life Sciences, South Africa

The southern African endemic Short-clawed Lark Certhilauda chuana has two geographically isolated populations. Little is known about the smaller eastern population, which is restricted to the Polokwane Plateau, South Africa. To provide input for a conservation strategy for the eastern...

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Seasonal population dynamics and energy consumption by waterbirds in a small temperate estuary

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Jeffrey W Hean --- Department of Zoology and Entomology, South Africa Adrian JFK Craig --- Department of Zoology and Entomology, South Africa Nicole B Richoux --- Department of Zoology and Entomology, South Africa

Simple measures of population dynamics and energy consumption can provide baseline information on the role of consumers in food webs, particularly for cryptic or highly-mobile species of waterbirds. We provide estimates of the seasonal population dynamics and energy consumption of...

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Migration flyway of the Mediterranean breeding Lesser Crested Tern Thalasseus bengalensis emigratus

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Abdulmaula Hamza --- School of Marine and Environmental Sciences, Malaysia Nicola Baccetti --- Istituto Superiore per la Protezione e la Ricerca Ambientale, Italy Joe Sultana --- BirdLife Malta, Malta Jaber Yahia --- Zoology Department, Faculty of Science, Libya Marco Zantello --- Istituto Superiore per la Protezione e la Ricerca Ambientale, Italy Adriano de Faveri --- Istituto Superiore per la Protezione e la Ricerca Ambientale, Italy Nick Cutts --- Institute of Estuarine and Coastal Studies, UK John Borg --- BirdLife Malta, Malta Hichem Azafzaf --- Regional Activity Centre for Specially Protected Areas, Tunisia Pierre Defos du Rau --- Office National de la Chasse et de la Faune Sauvage, France Esam Bourass --- Nature Conservation Department, Libya Khaled Etayeb --- Zoology Department, Faculty of Sciences, Libya Michael Elliott --- Institute of Estuarine and Coastal Studies, UK

The Lesser Crested Tern Thalasseus bengalensis emigratus breeding population in the Mediterranean is found exclusively in Libya, on the two coastal islands of Gara and Elba and one wetland on the mainland coast at Benghazi. In order to improve knowledge...

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Mid-upper arm circumference (MUAC) performance versus weight for height in South African children (0–59 months) with acute malnutrition

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Natisha Dukhi --- Department of Human Physiology, South Africa Benn Sartorius --- Discipline of Public Health Medicine, South Africa Myra Taylor --- Discipline of Public Health Medicine, South Africa

Objectives: The objective of this study was to compare mid upper arm circumference (MUAC) and weight for height (W/H) as indices of acute malnutrition in children aged 0–59 months in South Africa.

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Obesity and associated factors in young adults attending tertiary institutions in south-eastern Nigeria

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Patricia Ogechi Ukegbu --- Department of Human Nutrition and Dietetics, Nigeria Ada Charity Uwaegbute --- Department of Human Nutrition and Dietetics, Nigeria Chinyere Akudo Echendu --- Department of Human Nutrition and Dietetics, Nigeria Chukwunonso Ejike --- Department of Biochemistry, Nigeria Julie Uche Anyika-Elekeh --- Department of Human Nutrition and Dietetics, Nigeria Victoria Uzoamaka Asumugha --- Department of Human Nutrition and Dietetics, Nigeria Solomon Abasiekong Kuyik --- Department of Food Science and Technology, Nigeria Shola Omodamiro --- Department of Biochemistry, Nigeria Blessing Nwofia --- Department of Human Nutrition and Dietetics, Nigeria Chinwe Uzokwe --- Department of Human Nutrition and Dietetics, Nigeria Chidinma Oluchi-Nliam --- Department of Human Nutrition and Dietetics, Nigeria Nnenna Uwakwe --- Department of Human Nutrition and Dietetics, Nigeria

Objective: To assess prevalence of overweight/obesity and associated factors in a group of university undergraduates in south-east Nigeria.

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Nitrogen leakages and vegetable dry matter yield in a subtropical wetland soil amended with cattle manure and mineral nitrogen fertiliser

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Johnson Masaka --- Department of Land and Water Resources Management, Faculty of Natural Resources Management and Agriculture, Zimbabwe Eliton Chivandi --- School of Physiology, Faculty of Health Sciences, South Africa

The response of nitrous oxide emission and nitrate leaching to increased nitrogen (N) fertiliser and cattle manure applications to wetland vegetable cropping in subtropical Africa have significant impacts on the atmospheric and terrestrial environments. Two field experiments were carried out...

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Effect of conservation agriculture associated crop rotation systems on root and crown rot severity and respective soil-borne pathogens of maize (Zea mays L.) in the Highveld area of South Africa

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Maryke Craven --- Agricultural Research Council – Grain Crops Institute, South Africa André A Nel --- Agricultural Research Council – Grain Crops Institute, South Africa

Although crop rotation reduces the incidence of soil-borne diseases, reduced tillage practices create the risk of increased disease incidence. Monoculture maize (MM) under both conventional tillage (CT) and conservation agriculture (CA) crop systems were evaluated against two-and three-year rotation CA...

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Towards a new model to benchmark firms’ operating efficiency: A data envelopment analysis approach

Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: Merwe Oberholzer --- Accounting Sciences, South Africa Dawie Mong --- Accounting Sciences, South Africa Jan van Romburgh --- Accounting Sciences, South Africa

The purpose of the study was to construct two similar data envelopment analysis (DEA) models. The first contains only published accounting-based data and the second added weighted average cost of capital (WACC), a primary market-based determinant, as an input variable...

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“I am Malawian, Multicultural or British”: Remote acculturation and identity formation among urban adolescents in Malawi

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Kim T. Ferguson --- Psychology Faculty, USA Yuna L. Ferguson --- Department of Psychology, USA Gail M. Ferguson --- Department of Human Development and Family Studies, USA

We aimed to better understand multidimensional remote acculturation to South African, United States of America (US), and United Kingdom (UK) cultures among 144 thirteen- to seventeen-year-old (M = 15 0.28, SD = 1.06; 43.1% female; 36.6% Black African, 23.9% Southeast...

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National collective identity in transitional societies: Salience and relations to life satisfaction for youth in South Africa, Albania, Bulgaria, the Czech Republic, Kosovo and Romania

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Radosveta Dimitrova --- Stockholm University, Sweden Pasquale Musso --- University of Palermo, Italy Luzelle Naudé --- University of the Free State, South Africa Skerdi Zahaj --- University of Tirana, Albania Iva Polackova Solcova --- The Czech Academy of Sciences, the Czech Republic Delia Stefenel --- Lucian Blaga University of Sibiu, Romania Fitim Uka --- Private Bearer of Higher Education “Qeap Heimerer”, Kosovo Venzislav Jordanov --- University of World and National Economy (UWNE), Bulgaria Evgeni Jordanov --- Ivan Rilski University, Bulgaria Peter Tavel --- Palacky University, the Czech Republic

In this study we investigated the salience of the construct of national collective identity and its associations with life satisfaction among adolescents living in transitional societies characterised by relevant change in the last decades. Participants were 1 066 adolescents (M...

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Kenya’s Safaricom, Ceo Bob Collymore and M-Pesa: Extended Notes from Keynote Address

Item type: Journal Article • Journal: Africa Journal of Management • Authors: Moses N. Kiggundu --- Sprott School of Business, Carleton University, Canada Frederick Onyango Ogola --- Strathmore University Business School, Kenya

This article is an extension of the keynote address given by Safaricom’s chief executive officer (CEO) at the 2016 AFAM Conference. It provides details about Safaricom, Kenya’s leading mobile telecommunications corporation, Safaricom’s CEO, Mr. Collymore, and the iconic M-PESA mobile...

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Impact of pipe roughness on the performance of a water distribution network: A case study of the Westbury Network, Johannesburg, South Africa

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Stephen Nyende-Byakika --- Department of Civil Engineering, South Africa

The Westbury area, a suburb of the city of Johannesburg, is characterized by a very old pipe network, high water losses as well as high operating and maintenance costs. Consequently, a network rehabilitation project was proposed for the area, with...

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Potential of producing green mealies in summer and winter at two sites in KwaZulu-Natal, South Africa, considering rainfall, soil moisture and weeding

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Dolapo B Akinnuoye-Adelabu --- Crop Science, School of Agricultural, Earth and Environmental Sciences, South Africa Albert T Modi --- Crop Science, School of Agricultural, Earth and Environmental Sciences, South Africa Tafadzwanashe Mabhaudhi --- Crop Science, School of Agricultural, Earth and Environmental Sciences, South Africa

Producers are exploring possibilities of growing major crops outside the normal growing seasons due to environmental challenges associated with climate change. This study evaluated growth and yield of maize (Zea mays ‘SC701′) in relation to planting season and weeding. Field...

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Emergence response of sunflower (Helianthus annuus) cultivars to supra-optimal soil temperatures

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Lize Henning --- Department of Soil, Crop and Climate Sciences, South Africa Gert Ceronio --- Department of Soil, Crop and Climate Sciences, South Africa André A Nel --- Agricultural Research Council–Grain Crops Institute, South Africa

Seedling emergence is a sensitive stage during sunflower (Helianthus annuus L.) establishment. Abiotic stresses, such as high soil temperatures (above 40 °C), can cause delayed emergence resulting in uneven stand and ultimately poor yields. Therefore, the emergence and early growth...

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Distribution of the invasive alien weed, Lantana camara, and its ecological and livelihood impacts in eastern Africa

Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Ross T Shackleton --- Centre for Invasion Biology, Department of Botany and Zoology, South Africa Arne BR Witt --- Centre for Agriculture and Biosciences International, Kenya Winnifred Aool --- National Agricultural Research Organisation, Uganda Corin F Pratt --- Centre for Agriculture and Biosciences International, UK

Lantana camara (lantana) is a major invasive shrub globally, impacting upon biodiversity, economies, ecosystem services, and driving socio-ecological change. The aim of this study was to determine the current and potential distribution of lantana in eastern Africa and its livelihood...

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Growth and phenology of a three- to four-year-old Sclerocarya birrea international provenance trial in Malawi

Item type: Journal Article • Journal: Southern Hemisphere Forestry Journal • Authors: PW Chirwa RJ Bwanali G Meke W Sagona CRY Munthali L Mwabumba

Indigenous wild fruits of Sclerocarya birrea have been used to supplement diets in time of critical food shortage, generate income when sold and as a source of raw materials for natural food-based industries in many developing countries. However, the widespread...

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Post-establishment vegetation control in two pine saw-timber stands in South Africa

Item type: Journal Article • Journal: Southern Hemisphere Forestry Journal • Authors: KM Little

In pine plantations, the effect of shading following canopy closure reduces the growth of competing vegetation. In some pine stands, particularly those grown for saw-timber, full canopy closure is not achieved due to a combination of the low initial planting...

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Conflict management styles and work-related well-being among higher education employees

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Wilme M. Van Niekerk --- School of Human Resource Sciences, South Africa Marissa De Klerk --- School of Human Resource Sciences, South Africa Jeanine K. Pires-Putter --- School of Human Resource Sciences, South Africa

The objective of the study was to assess the relationship between conflict management styles and work-related well-being of employees in a higher education institution in South Africa. Participants were academic personnel (n = 180) and support staff (n = 201),...

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Antecedents of flourishing at work in a fast-moving consumer goods company

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Cindy Rautenbach --- Optentia Research Focus Area, South Africa Sebastiaan Rothmann --- Optentia Research Focus Area, South Africa

The aims of this study were to investigate antecedents of flourishing in the workplace. A cross-sectional survey design was used with a stratified random sample of 779 employees in a fast-moving consumer goods company in South Africa (females = 40.4%,...

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Perceived parental involvement and well-being among Ethiopian adolescents

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Asamenew Demessie Bireda --- Department of Educational Psychology, South Africa Jace Pillay --- South African Research Chair: Education and Care in Childhood, Department of Educational Psychology, South Africa

This study examined the relationship between perceived parent academic socialisation of their children and the children’s well-being in four domains: depression, self-esteem, school adjustment, and substance use. The participants consisted of 809 Ethiopian high school students, mostly male (52.9%) (mean...

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Older age South African persons’ experiences of their needs with cell phone use

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Emmylou Lamont --- School of Psychosocial Behavioural Sciences, Community Psychosocial Research (COMPRES), South Africa Werner de Klerk --- School of Psychosocial Behavioural Sciences, Community Psychosocial Research (COMPRES), South Africa Lelanie Malan --- School of Psychosocial Behavioural Sciences, Community Psychosocial Research (COMPRES), South Africa

This study explored the needs met by cell phone use by older persons. Informants were 52 older South Africans (age range 65 to 89 years, male = 8, female = 44). The older persons completed a visual representation and semi-structured...

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Primary care screening and risk factors for postnatal depression in Zimbabwe: A scoping review of literature

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: James January --- Department of Psychiatry, Nelson R. Mandela School of Medicine, South Africa Jonathan Burns --- Department of Psychiatry, Nelson R. Mandela School of Medicine, South Africa Moses Chimbari --- School of Nursing and Public Health, Howard Campus, College of Health Sciences, South Africa

Postnatal depression (PND) exerts a significant burden on the global public health system, globally affecting approximately 10 to 20% of women. Despite the recently reported high prevalence of PND in Zimbabwe, it is rarely diagnosed or appropriately managed in primary...

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Assessment of water quality in selected shallow wells of Keiyo Highlands, Kenya

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Peter K. Mbaka --- Department of Civil, Construction and Environmental Engineering, Kenya John K. Mwangi --- Department of Civil, Construction and Environmental Engineering, Kenya Clement K. Kiptum --- Department of Civil and Structural Engineering, Kenya

A supply of potable water is important for the sustenance of a healthy population. This study was conducted in the Keiyo Highlands, Elgeyo Marakwet County, in Kenya. The aim was to assess seasonal variation in physico-chemical and microbiological water quality...

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“What else can we do?” Strategies and negotiations around place and space in the case of “undocumented” Zimbabwean migrant workers in Botswana

Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Treasa Galvin --- Department of Sociology, Botswana

Restrictive immigration laws, enhanced border controls, the criminalisation of migrants, punitive deportation practices and a lack of respect for the right to asylum have become a common feature of the contemporary world. In the face of these increasingly restrictive state...

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Community acceptability of minimally invasive autopsy (MIA) in children under five years of age in Soweto, South Africa

Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Nonhlanhla Ngwenya --- Medical Research Council: Respiratory and Meningeal Pathogens Research Unit, South Africa David Coplan --- Department of Anthropology, South Africa Susan Nzenze --- Medical Research Council: Respiratory and Meningeal Pathogens Research Unit, South Africa Nellie Myburgh --- Medical Research Council: Respiratory and Meningeal Pathogens Research Unit, South Africa Shabir Madhi --- Medical Research Council: Respiratory and Meningeal Pathogens Research Unit, South Africa

This interdisciplinary study, using qualitative and ethnographic research methods, collected data from 330 men and women in Soweto, South Africa, in order to understand the community acceptability of minimally invasive autopsy (MIA) in children who died under five years of...

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Significant genetic differentiation among meroplanktonic barrel jellyfish Rhizostoma pulmo (Cnidaria: Scyphozoa) in the Mediterranean Sea

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: AR Ben Faleh --- Marine Biology Unit, Faculty of Sciences of Tunis, Tunisia H Allaya --- Marine Biology Unit, Faculty of Sciences of Tunis, Tunisia A Armani --- FishLab, Department of Veterinary Sciences, Italy AAB Shahin --- Department of Zoology, Faculty of Science, Egypt

Molecular data have shown that jellyfishes are more geographically restricted and evolutionarily divergent than previously thought. We examined genetic variation and divergence within the meroplanktonic barrel jellyfish Rhizostoma pulmo in the Mediterranean Sea; specific sampling areas were the northern Adriatic,...

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Status of birds of prey in Guinea-Bissau: first assessment based on road surveys

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Mohamed Henriques --- Marine and Environmental Sciences Centre (MARE), Portugal Miguel Lecoq --- BirdLife International, Senegal Hamilton Monteiro --- Coastal Planning Office, Guinea-Bissau Aissa Regalla --- Instituto da Biodiversidade e Áreas Protegidas (IBAP), Guinea-Bissau José P Granadeiro --- Centro de estudos do ambiente e do mar (CESAM), Departamento de Biologia Animal, Faculdade de Ciências, Portugal Paulo Catry --- Marine and Environmental Sciences Centre (MARE), Portugal

Several studies have reported marked declines in populations of birds of prey across the African continent, including West Africa. However, there are still regions of which virtually nothing is known, as is the case for Guinea-Bissau. Because birds of prey...

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Appropriate technology and ethical obligations of the university: W.E.B. Du Bois on the Africana university mission

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: C. Verharen --- Department of Philosophy, USA G. Kadoda --- Independent Researcher, Sudan F. Bugarin --- Department of African Studies, USA J. Fortunak --- Department of Chemistry and Pharmaceutical Sciences, USA J. Tharakan --- Department of Chemical Engineering, USA D. Schwartzman --- Department of Biology (Professor Emeritus), USA E. Wensing --- Department of Human Development, USA G. Middendorf --- Department of Biology, USA

Working on the Encyclopedia Africana under the sponsorship of Kwame Nkrumah in Ghana, W.E.B. Du Bois reversed his conviction that only the ‘talented tenth’ could profit from a university education. He proposed that virtually all humans have a right to...

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Psychometric validation of the Flourishing-at-Work Scale – Short Form (FWS-SF): Results and implications of a South African study

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Cindy Rautenbach --- Optentia Research Focus Area, South Africa Sebastiaan Rothmann --- Optentia Research Focus Area, South Africa

The aim of this study was to validate the Flourishing-at-Work Scale Short Form (FWS-SF) in a South African fast-moving consumable goods industry. Participants were a stratified random sample of 779 employees of an alcoholic beverage company (female = 40.4%, black...

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Reliability of measures of work engagement and psychological well-being among South African state security forces

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Nondumiso Mlangeni --- Department of Industrial Psychology, Faculty of Military Science, South Africa Gideon Van Dyk --- Department of Industrial Psychology, Faculty of Military Science, South Africa

This study reports on the psychometric properties of measures of work engagement and psychological well-being in the South African state security forces. The research sample consisted of a combined sample of 178 soldiers and 57 police officers (34% females). They...

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Coping self-efficacy and psychosocial well-being of marginalised South African youth

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Seleme R. Melato --- Optentia Research Focus Area, South Africa Chrizanne van Eeden --- Optentia Research Focus Area, South Africa Sebastiaan Rothmann --- Optentia Research Focus Area, South Africa Elizabeth Bothma --- Optentia Research Focus Area, South Africa

The aim of this study was to investigate coping self-efficacy and aspects of psychosocial well-being amongst youth from marginalised backgrounds. A total of 794 black South African marginalised youth (males = 54%, females = 46%, age range between 18 and...

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Bereavement care support in a traditionalist South African community setting

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Mpsanyana Makgahlela --- Department of Psychology, South Africa Tholene Sodi --- Department of Psychology, South Africa

The present study investigated the bereavement care support as experienced by 14 Northern Sotho (n = 14, males = 50%; mean age = 59 years, SD = 13.7 years) community members. The study adopted the descriptive phenomenological approach. Data on...

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Principals’ experiences of being disempowered by union members

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Chris Myburgh --- Department of Educational Psychology, South Africa Marie Poggenpoel --- Department of Educational Psychology, South Africa Veronica Mapitso Kgabo --- Department of Educational Psychology, South Africa

This study explored school principals’ experience of managing unionised schools in South Africa. Qualitative in-depth phenomenological interviews were conducted with a purposeful selected sample of 13 school principals of unionised schools (age range 36-60 years). The school principals responded to...

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Tono Reservoir fishery contribution to poverty reduction among fishers in northern Ghana

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: DN Akongyuure --- Department of Fisheries and Watershed Management, Faculty of Renewable Natural Resources, Ghana S Amisah --- Department of Fisheries and Watershed Management, Faculty of Renewable Natural Resources, Ghana TK Agyemang --- Department of Fisheries and Watershed Management, Faculty of Renewable Natural Resources, Ghana RE Edziyie --- Department of Fisheries and Watershed Management, Faculty of Renewable Natural Resources, Ghana

Fishery characteristics and livelihood status of fishers at Tono Reservoir, Ghana, were investigated between January 2015 and June 2016. Data on fisher demography, fishing gears, fishing methods, perceptions of the state of fish stocks, management practices, income and consumption of...

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Physico-chemical water characteristics and aquatic macroinvertebrates of Lake Tsimanampesotse, south-western Madagascar

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: JR Rasoloariniaina --- Centre National de Recherches sur l’Environnement (CNRE), Madagascar

Saline lakes are known to be amongst the most productive ecosystems in the world. Tsimanampesotse, a ‘conservation hotspot’ soda lake in southwestern Madagascar, was integrated into the Ramsar wetland network in 1998. Despite its importance for aquatic birds, knowledge of...

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The effect of low-level kelp supplementation on digestive enzyme activity levels in cultured abalone Haliotis midae fed formulated feeds

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: A Nel --- Department of Ichthyology and Fisheries Science, South Africa BI Pletschke --- Department of Biochemistry and Microbiology, South Africa PJ Britz --- Department of Ichthyology and Fisheries Science, South Africa

Previous studies have found that macroalgal inclusion in formulated diets for cultured abalone improves feed utilisation, and it was suggested that seaweed-associated bacteria supply enzymes that aid in the animal's digestion. In the present study, we hypothesised that kelp supplementation...

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Fish recruitment into a South African temporarily open/closed temperate estuary during three different hydrological mouth phases

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: GP Tweddle --- Department of Zoology, South Africa PW Froneman --- Department of Zoology and Entomology, South Africa

Quantitative recruitment of ichthyofauna into a South African temporarily open/closed estuary (TOCE) was investigated during three distinct hydrological phases: closed overwash, open outflow and tidal mouth conditions. Maximum recruitment densities occurred during outflow conditions and declined when the system became...

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Survival and long-term growth of eucalypts on semi-arid sites in a Mediterranean climate, South Africa

Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Ben du Toit --- Department of Forest and Wood Science, South Africa Gideon F Malherbe --- Department of Forest and Wood Science, South Africa Anton Kunneke --- Department of Forest and Wood Science, South Africa Thomas Seifert --- Department of Forest and Wood Science, South Africa C Brand Wessels --- Department of Forest and Wood Science, South Africa

Four experiments were established on the semi-arid west coast plain of South Africa during the 1990s. The trails tested the survival and growth of several eucalypt species and hybrids, some of which were established in a climate that is drier...

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HIV antiretroviral medication stock-outs in Ghana: contributors and consequences

Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Rebecca A Poku --- The University of Texas Health Science Center at Houston School of Public Health, USA Adobea Yaa Owusu --- Institute of Statistical, Social, and Economic Research, University of Ghana, Ghana Patricia Dolan Mullen --- The University of Texas Health Science Center at Houston School of Public Health, USA Christine Markham --- The University of Texas Health Science Center at Houston School of Public Health, USA Sheryl A McCurdy --- The University of Texas Health Science Center at Houston School of Public Health, USA

Drug stock-outs are an unfortunate yet common reality for patients living in low and middle income countries, particularly in sub-Saharan Africa where trouble with consistent stock of antiretroviral medications (ARVs) continues. Our study takes a snapshot of this problem in...

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Bardet–Biedl syndrome: expect the unexpected, suspect the unsuspected

Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: Larissa Cronjé --- Perioperative Research Group, Department of Anaesthesiology and Critical Care, South Africa

This is the first reported description of Bardet–Biedl syndrome (BBS) with the combination of a malacic bifid epiglottis and anterior laryngeal web. Anaesthesia for BBS has numerous concerns and these are reviewed, focusing on features that manifest not only in...

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Implementation and evaluation of a weight-reduction programme for diabetic patients at a primary health care facility in the Western Cape: a pilot study

Item type: Journal Article • Journal: South African Family Practice • Authors: A Razak --- Metro District Health Services, South Africa AA Isaacs --- Metro District Health Services, South Africa

Background: Diabetes is a common non-communicable disease and complications are resulting in increased disability, reduced life expectancy and enormous health costs for virtually every society. Medical Nutrition Therapy is important for the prevention, treatment, and self-management of diabetes, and the...

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Pattern and correlates of obesity among public service workers in Ondo State, Nigeria: a cross-sectional study

Item type: Journal Article • Journal: South African Family Practice • Authors: Isaac Aladeniyi --- Department of Epidemiology and Medical Statistics, Nigeria Oladele Vincent Adeniyi --- Department of Family Medicine, South Africa Olufunmilayo Fawole --- Department of Epidemiology and Medical Statistics, Nigeria Mary Adeolu --- Nigeria State Health Investment Project, Nigeria Daniel Ter Goon --- Department of Health Sciences, South Africa Anthony Idowu Ajayi --- Department of Sociology, South Africa Eyitayo Omolara Owolabi --- Department of Health Sciences, South Africa

Background: Obesity is the third leading cause of mortality and has become a global epidemic. There is a continuous increase in its prevalence both in the developed and in developing countries. Obesity is closely associated with chronic health conditions, thus...

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Body weight and weight perception among African and Caribbean university students: Correlation with depression symptoms

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Supa Pengpid --- ASEAN Institute for Health Development, Thailand Karl Peltzer --- Department of Psychology, South Africa

The aim of the study was to investigate the association between body weight, weight perception, and depressive symptoms in African and Caribbean university students. In a cross-sectional survey the total sample included 4 964 undergraduate university students (mean age 21.8,...

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Supervisor support, flourishing, and intention to leave in a higher education setting

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Christine Janse van Rensburg --- Human Resource Department, South Africa Sebastiaan Rothmann --- Optentia, North-West University, South Africa Elsabé Diedericks --- Optentia, North-West University, South Africa

This study investigated the relationship between supervisor support, flourishing at work, and intention to leave in a South African higher education setting. Participants comprised a convenience sample of 339 academic employees from three universities of technology. They completed the Supervisor...

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The rediscovery of a lost frog: Arthroleptis troglodytes Poynton, 1963

Item type: Journal Article • Journal: African Zoology • Authors: Francois S Becker --- Gobabeb Research and Training Centre, Namibia Robert W Hopkins --- Natural History Museum of Zimbabwe, Zimbabwe

The cave squeaker Arthroleptis troglodytes Poynton, 1963 was first collected in 1961/62, and not observed again for 54 years despite several attempts to locate it. We rediscovered this species near the type locality in the Chimanimani mountain range in eastern...

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Scope of research on Parthenium hysterophorus in Africa

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Owen Rubaba --- College of Health Sciences, South Africa Moses Chimbari --- College of Health Sciences, South Africa Samson Mukaratirwa --- School of Life Sciences, South Africa

Parthenium (Parthenium hysterophorus) is an invasive plant that invades farm and grazing lands, and affects biodiversity, animal and human health, agricultural productivity and food security. The plant is native to the Americas, but was introduced to Africa, Asia and Australia...

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Plant anatomy as a tool for evaluating the effect of different levels of nitrogen, plant population density, row spacing and irrigation on kenaf (Hibiscus cannabinus) fibre development

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Kayembe P Kabeya --- Department of Plant and Soil Sciences, South Africa Petrus J Robbertse --- Department of Plant and Soil Sciences, South Africa Diana Marais --- Department of Plant and Soil Sciences, South Africa J Martin Steyn --- Department of Plant and Soil Sciences, South Africa

Kenaf (Hibiscus cannabinus) provides high-quality fibre that is used in papermaking, building materials and absorbents. The study aims were to conduct a proper anatomical study of fibre development in kenaf stems, and to investigate if the number of fibre wedges,...

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The taxonomic position and breeding range of Golden Nightjar Caprimulgus eximius (Caprimulgidae)

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Yvonne Lawrie --- School of Medicine, Medical Sciences and Nutrition, Institute of Medical Sciences, UK Robert Swann --- , UK Peter Stronach --- , UK Yoav Perlman --- Israel Ornithological Center, Israel J Martin Collinson --- School of Medicine, Medical Sciences and Nutrition, Institute of Medical Sciences, UK

Golden Nightjar Caprimulgus eximius is an apparently sedentary sub-Saharan species with a breeding range extending from Senegal and Mauritania to Sudan. Although genetic studies of nightjars and related Caprimulgiformes have been published previously, none has included Golden Nightjar. In this...

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The application of camera trapping to assess Rallidae species richness within palustrine wetland habitat in South Africa

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Robin B Colyn --- Terrestrial Bird Conservation Programme, South Africa Alastair M Campbell --- Ingula Nature Reserve, South Africa Hanneline A Smit-Robinson --- Terrestrial Bird Conservation Programme, South Africa

Wetlands are vital habitats for a variety of organisms and ecosystem services, but the health of these valuable habitats is declining worldwide. The Rallidae species that rely on these habitats are typically elusive, cryptic and difficult to monitor accurately, especially...

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Bird species richness and densities in relation to sulphur dioxide gradients and environmental variables

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Luckson Muyemeki --- Unit for Environmental Sciences and Management (Geography and Environmental Management), South Africa Roelof Burger --- Unit for Environmental Sciences and Management (Geography and Environmental Management), South Africa Stuart J Piketh --- Unit for Environmental Sciences and Management (Geography and Environmental Management), South Africa Steven W Evans --- SARCHI Chair on Biodiversity Value and Change, School of Mathematical and Natural Sciences, South Africa

The expansion of coal-fired power stations in South Africa has resulted in growing environmental concerns as they are the largest emitters of sulphur dioxide (SO2). Sulphur dioxide emissions from power plants pose a potential threat to avian populations. However, the...

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Constrained relationship agency as the risk factor for intimate partner violence in different models of transactional sex

Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Rebecca Fielding-Miller --- Department of Medicine, USA Kristin Dunkle --- South African Medical Research Council, South Africa

Women who engage in transactional sex are more likely to experience intimate partner violence (IPV) and are at higher risk of HIV. However, women engage in transactional sex for a variety of reasons and the precise mechanism linking transactional sex...

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Empowering caregivers of orphans and vulnerable children in Swaziland

Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Syloid Choice Makufa --- Pact, Swaziland Daisy Kisyombe --- Pact, Swaziland Nicole Miller --- Pact, Swaziland Nanette Barkey --- Pact, USA

This paper reports on the health and psychosocial impacts of a programme designed to economically empower female caregivers of orphans and vulnerable children (OVC). The results presented are from a cohort of 492 female caregivers who participated in savings groups...

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Modelling the impacts of semi-intensive aquaculture on the foodweb functioning of a Nile Delta coastal lake

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: M Bocci --- Department of Environmental Sciences, Informatics and Statistics, Italy R Pastres --- Department of Environmental Sciences, Informatics and Statistics, Italy S Kholeif --- National Institute of Oceanography and Fisheries (NIOF), Egypt D Dalla Barba --- Department of Environmental Sciences, Informatics and Statistics, Italy D Brigolin --- Department of Environmental Sciences, Informatics and Statistics, Italy

Nutrient loadings are an important component of aquaculture impacts as they can lead to cascade effects at the ecosystem level. An evaluation of these effects on foodweb functioning is presented and discussed for the case study of Lake Burullus in...

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Analysis of bycatch in the South African midwater trawl fishery for horse mackerel Trachurus capensis based on observer data

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: JR Reed --- Marine Research Institute, Department of Biological Sciences, South Africa SE Kerwath --- Marine Research Institute, Department of Biological Sciences, South Africa CG Attwood --- Marine Research Institute, Department of Biological Sciences, South Africa

The South African midwater trawl fishery targets adult horse mackerel Trachurus capensis. The bulk of the catch is taken by a single freezer-trawler, the biggest fishing vessel operating in South African waters. As fishing takes place off the south coast...

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Contrasting hydrography and phytoplankton distribution in the upper layers of cyclonic eddies in the Mozambique Basin and Mozambique Channel

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: T Lamont --- Branch: Oceans and Coasts, Department of Environmental Affairs, South Africa RG Barlow --- Marine Research Institute and Department of Oceanography, South Africa

Hydrographic data collected in cyclonic eddies in the Mozambique Channel and Basin revealed notable differences in temperature and salinity at a depth of 100 m, the upper mixed layer, the nitracline depths, and vertical distribution of chlorophyll-a (Chl-a). Differences in...

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Longevity of SMMEs in Soweto: Does marketing play a role?

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: J. W. Strydom --- Department of Business Management, South Africa

Small businesses in South Africa are in a fight for survival. Fewer than 50% of all SMMEs survive for more than five years, this while government sees itself as the saviour and growth engine for creating jobs in the country...

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‘Celibacy is certainly not for me!’: Transgressive Sexualities in Male Children in Moses Isegawa's Abyssinian Chronicles

Item type: Journal Article • Journal: Eastern African Literary and Cultural Studies • Authors: Asante Lucy Mtenje --- English Department, South Africa

Moses Isegawa's representation of young male sexuality in Abyssinian Chronicles draws our attention to sexuality as a mobile process of relation, a provisional, contextually-informed construct which challenges more naturalised assumptions of sexuality as a monolithic biological given. Even though there...

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Different Orders of Pleasure: Good Life and Human Flourishing in the City in Dambudzo Marechera’s Scrapiron Blues

Item type: Journal Article • Journal: Eastern African Literary and Cultural Studies • Authors: Edwin Mhandu --- English Department, South Africa

In this article, I argue that Dambudzo Marechera’s Scrapiron Blues demonstrates different and varied orders of enjoyment and well-being in the city that challenge the authenticity and truthfulness of the narration of the enjoyment space(s) sanctioned by the ZANU PF...

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Discursive hauntings: limits to reinvention for Zimbabwean farm workers after fast-track land reform

Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Andrew Hartnack --- Sustainable Livelihoods Foundation, South Africa

Scholars of Zimbabwe’s agrarian milieu since the “fast-track land-reform” in 2000 are increasingly suggesting that the label “farm worker” is no longer a relevant or accurate term for referring to former workers now living in resettlement areas. While many former...

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(Un)becoming Mountain Tigers Football Club: an ethnography of sports among the Western Cape’s farm workers

Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Tarminder Kaur --- Institute for Reconciliation and Social Justice, University of the Free State, South Africa

In 1999, farm workers at commercial farms in Louwshoek valley, Western Cape, founded the Mountain Tiger Football Club (MTFC). In addition to playing self-organised (unofficial) football for money (or other stakes), the MTFC had a stint of competing in the...

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Farm worker identities contested and reimagined: gender, race/ethnicity and nationality in the post-strike moment

Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Åsa Eriksson --- Department of Ethnology, History of Religions and Gender Studies, Sweden

In 2012/2013, widespread rural unrest — commonly referred to as the “farm worker strike” — broke out in the Western Cape, South Africa. This exposed not only poor salaries and working conditions, but also the disparity between representations of farm...

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Microfossils in surface sediments of brackish waters on the west coast of South Africa and their palaeoecological implications

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: S Fürstenberg --- Institute of Geosciences, Friedrich Schiller University Jena, Germany N Gründler --- Institute of Geosciences, Friedrich Schiller University Jena, Germany S Meschner --- Institute of Geosciences, Friedrich Schiller University Jena, Germany P Frenzel --- Institute of Geosciences, Friedrich Schiller University Jena, Germany

A faunistic survey covering 25 sites in estuaries, coastal lakes and ponds along the west coast of South Africa between the Cape of Good Hope in the south and the Olifants River in the north was carried out in May...

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Variation in the daily activity, movement and refugia of Critically Endangered geometric tortoises, Psammobates geometricus, in autumn and spring

Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Brian T. Henen --- , , South Africa Ulric P. van Bloemestein --- , , South Africa Margaretha D. Hofmeyr --- , , South Africa Craig A. Weatherby --- , , USA

To help assess habitat requirements of Critically Endangered geometric tortoises, we used thread-trailing to measure daily activity, movements and refugia of adult Psammobates geometricus in autumn and spring 2002. We found strong differences between seasons, and effects of weather, individuals...

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Habitat structure and presence of Salamandra algira Bedriaga, 1883 in the Edough Peninsula, north-eastern Algeria

Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Daniel Escoriza --- , Spain Jihène Ben Hassine --- , , Morocco

This study examined the role of habitat characteristics on the presence of Salamandra algira in the Edough Peninsula, north-eastern Algeria. In this region, 33 sites were surveyed over the late winter and spring for a period of three years. Salamandra...

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Predatory pelagic fishes of the Bijagós Archipelago (Guinea-Bissau) show high overlap in diets dominated by sardinella

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: E Correia --- Centro de Estudos do Ambiente e do Mar (CESAM), Departamento de Biologia Animal, Portugal JP Granadeiro --- Centro de Estudos do Ambiente e do Mar (CESAM), Departamento de Biologia Animal, Portugal A Regalla --- Instituto da Biodiversidade e das Áreas Protegidas da Guiné-Bissau (IBAP), Guinea-Bissau E Dias --- Instituto da Biodiversidade e das Áreas Protegidas da Guiné-Bissau (IBAP), Guinea-Bissau A Almeida --- Centro de Investigação Pesqueira Aplicada (CIPA), Guinea-Bissau P Catry --- Marine and Environmental Sciences Centre (MARE), Portugal

Knowledge of trophic interactions between the key components of marine communities is required to understand food-web dynamics and develop ecosystem-based management approaches. In West Africa, where fisheries sustain the livelihoods of a significant part of the human population, this understanding...

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Two cases of probable hybridisation between the pufferfishes Arothron meleagris (Anonymous 1798) and A. nigropunctatus (Bloch and Schneider 1801) on a fringing reef at Réunion Island

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: P Bourjon --- Les Sentinelles du Récif, réseau d’observateurs volontaires de la Réserve Naturelle Marine de La Réunion [‘Sentinels of the Reef’, Volunteer Observers Network of the Réunion Marine Park] (GIP–RNMR), Réunion Island B Chanet --- Institut de Systématique, France

Two individuals displaying mixed features of the colour patterns distinctive of Arothron meleagris and A. nigropunctatus were observed on the fringing reef at Réunion Island, between September 2012 and August 2013. Because many hybrid fish have been first identified through...

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Reflection on the first five years of South Africa’s Acoustic Tracking Array Platform (ATAP): status, challenges and opportunities

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: PD Cowley --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa RH Bennett --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa A-R Childs --- Department of Ichthyology and Fisheries Science, South Africa TS Murray --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa

The Acoustic Tracking Array Platform (ATAP) is a marine science programme that monitors the movements and migrations of inshore marine animals along the South African coastline. Acoustically tagged animals are monitored by an expanded network of approximately 100 automated data-logging...

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Transport and transformation of surface water masses across the Mascarene Plateau during the Northeast Monsoon season

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: P Vianello --- Nansen-Tutu Centre for Marine Environmental Research, South Africa IJ Ansorge --- Department of Oceanography, Marine Research Institute, South Africa M Rouault --- Nansen-Tutu Centre for Marine Environmental Research, South Africa M Ostrowski --- Institute of Marine Research, Norway

The Mascarene Plateau lies in the south-west Indian Ocean between the islands of Mauritius and the Seychelles Bank, and is characterised by a series of shallow banks separated by deep (>1 000 m), narrow channels. The plateau acts as an...

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Comparative genetic structure in two high-dispersal prawn species from the south-west Indian Ocean

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: TK Mkare --- Kenya Marine and Fisheries Research Institute, Kenya JC Groeneveld --- Oceanographic Research Institute (ORI), South Africa PR Teske --- Centre for Ecological Genomics and Wildlife Conservation, Department of Zoology, South Africa CA Matthee --- Evolutionary Genomics Group, Department of Botany and Zoology, South Africa

The penaeid prawns Fenneropenaeus indicus and Metapenaeus monoceros support shallow-water prawn fisheries in the south-west Indian Ocean. They are sympatric and have similar life histories, including developmental stages that depend on estuarine and marine habitats and a short dispersal duration...

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Modelling and performance of an automated small hybrid plant

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Samuel Ilupeju --- Discipline of Mechanical Engineering, Durban, South Africa Freddie Inambao --- Discipline of Mechanical Engineering, Durban, South Africa Yetunde Ilupeju --- Discipline of Mechanical Engineering, Durban, South Africa Taha Selim Ustun --- Electrical Engineering, Carnegie Mellon University, USA

Small rivers that can generate useful quantities of electricity are freely and proportionally distributed in Africa. Thousands of potential sites are available in South Africa, capable of generating hundreds of megawatts. Small hydropower generation is not a new approach in...

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Primary Health Care in South West Nigeria: Evaluating service quality and patients' satisfaction

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Omoseni O. Adepoju --- School of Management Technology, Nigeria Zacheus Opafunso --- School of Management Technology, Nigeria Modupe Ajayi --- School of Management Technology, Nigeria

Primary health care (PHC) is a fundamental, cost-effective approach in delivering essential healthcare services to achieve quality life for all. This study assesses service quality and patient satisfaction in the PHC sector in South West Nigeria. A multi-stage sampling approach...

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Feasibility of electricity generation using WECS in the selected locations of Tigray region (Ethiopia)

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Shiva Prashanth Kumar Kodicherla --- Department of Civil Engineering, College of Engineering & Technology, Ethiopia Satyanarayana Gaddada --- Department of Electrical and Computer Engineering, College of Engineering & Technology, Ethiopia

This paper presents the feasibility of electricity generation using WECS in the selected locations of Tigray region in Ethiopia. Weibull parameters were obtained using the energy pattern factor method (EPFM). A linear agreement was observed between mean wind speed and...

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Household wealth and adoption of Integrated Striga Management (ISM) technologies in northern Nigeria

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: L. J. S. Baiyegunhi --- School of Agricultural, Earth and Environmental Sciences, Discipline of Agricultural Economics, South Africa M. B. Hassan --- School of Agricultural, Earth and Environmental Sciences, Discipline of Agricultural Economics, South Africa

Agricultural households in developing countries often are unable and unwilling to adopt new technologies due to the deterrents to adoption imposed by numerous socio-economic, institutional and ecological factors. However, economic theory predicts that relatively wealthy households have better ability to...

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The ‘new’ bricks-and-mortar store: An evaluation of website quality of online grocery retailers in BRICS countries

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Alicia Neva Weber --- Department of Entrepreneurship, Supply Chain, Transport, Tourism and Logistics Management, South Africa Johanna Adolphina Badenhorst-Weiss --- Department of Entrepreneurship, Supply Chain, Transport, Tourism and Logistics Management, South Africa

Background: Online grocery retailing holds potentially fruitful outcomes for retailers and consumers. However, both retailers and consumers have been slow to adopt and participate in this form of grocery retailing, especially in countries with emerging economies such as those in...

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Hospital-acquired malnutrition in children at a tertiary care hospital

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Del-Rossi Sean Quadros --- Department of Paediatrics and Child Health, Kenya. Rose Kamenwa --- Department of Paediatrics and Child Health, Kenya. Samuel Akech --- Department of Paediatrics and Child Health, Kenya. William M Macharia --- Department of Paediatrics and Child Health, Kenya.

Objectives: This study sought to investigate the incidence and factors associated with hospital-acquired malnutrition in children.

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Antenatal and postpartum depression: effects on infant and young child health and feeding practices

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: SS Madlala --- Dietetics and Human Nutrition, South Africa SM Kassier --- Dietetics and Human Nutrition, South Africa

Globally, anxiety and depression is the third leading cause of disease burden for women 14 to 44 years of age. The World Health Organisation reports that 15 to 57% of women in developing countries experience symptoms of depression. Maternal mental illness...

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Infant feeding practices of teenage mothers attending a well-baby clinic in a public hospital in Umlazi, KwaZulu-Natal, South Africa

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: S Pillay --- Department of Paediatrics & Child Health, South Africa W Sibanda --- School of Nursing and Public Health, College of Health Sciences, South Africa MR Ghuman --- Department of Paediatrics & Child Health, South Africa A Coutsoudis --- Department of Paediatrics & Child Health, South Africa

Objective: This study aimed to determine the breastfeeding practices of urban, predominantly isiZulu speaking, South African teenage mothers, and to examine factors associated with breastfeeding.

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Managing HIV-positive sero-status in Ghana’s most HIV concentrated district: self-perceived explanations and theoretical discourse

Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Adobea Y Owusu --- Institute of Statistical, Social and Economic Research (ISSER), Ghana Amos Laar --- Department of Family and Population Health, School of Public Health, Ghana

As of December 2015 there were 37 million persons living with HIV/AIDS (PLWHAs), 70% of whom are in sub-Saharan Africa. Ghana, which contributes a relatively small number to Africa’s HIV burden, has a generalised HIV epidemic. The current national prevalence...

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Psychological functioning and well-being among Ghanaian women: A brief report

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Ethel Akpene Atefoe --- Department of Psychological Medicine and Mental Health, School of Medicine, Ghana Nuworza Kugbey --- Department of Family and Community Health, School of Public Health, Ghana

This study examined correlates of psychological well-being and distress among women in Accra, Ghana. A total of 200 women between 18 and 65 years completed measures of psychological well-being and distress. Independent t-test and One-way ANOVA F-test analysis of the...

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Validation of the Life Role Salience Scale in a South African setting

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Anita Bosch --- University of Stellenbosch Business School, Stellenbosch University, South Africa Madelyn Geldenhuys --- Department of Industrial Psychology and People Management, South Africa Leilani Bezuidenhout --- Department of Industrial Psychology and People Management, South Africa

This study aimed to validate the Life Role Salience Scale (LRSS) in a South African context. Respondents were 300 working adults (72.3% = women; 57.9% = non-white; mean age = 35.12 years, SD = 10.25 years; mostly from the finance...

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Authentic leadership, followership, and psychological capital as antecedents of work engagement

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Marieta du Plessis --- Department of Industrial Psychology, South Africa Adré B. Boshoff --- Department of Industrial Psychology, South Africa

The present study investigated authentic leadership, psychological capital, and followership behaviour influences on work engagement of employees. Respondents were 901 South African employees within the healthcare industry organisation (n = 647) and mining industry (n = 254). The employees completed...

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Psychological empowerment and organisational change among hotel employees in Egypt

Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Mohamed A. Nassar --- Hotel Studies Department, Faculty of Tourism and Hotels, Egypt

Empowering employees can have a significant impact on increasing job satisfaction, efficiency and productivity in the hotel industry. This paper aims to investigate the effect of empowerment on readiness for and acceptance of organisational changes among employees in Egyptian chain...

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Women in leadership

Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Helga Tweebeck --- Hotel Management School, The Netherlands Conrad Lashley --- Hotel Management School, The Netherlands

Women in leadership positions play an important role for the hotel industry as well as for society. The Pompidou Hotel Group wants to increase the number of female employees in leading positions. The purpose of this research was to find...

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Sample-size determination and adherence in randomised controlled trials published in anaesthetic journals

Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: M Nontshe --- Metropolitan Department of Anaesthetics, Critical Care and Pain Management, South Africa S Khan --- Metropolitan Department of Anaesthetics, Critical Care and Pain Management, South Africa T Mandebvu --- Metropolitan Department of Anaesthetics, Critical Care and Pain Management, South Africa B Merrifield --- Metropolitan Department of Anaesthetics, Critical Care and Pain Management, South Africa RN Rodseth --- Metropolitan Department of Anaesthetics, Critical Care and Pain Management, South Africa

Background: Sample-size calculations are critical to ensure that randomised control trials return robust and reliable results. The estimated treatment effects used in these calculations is often significantly different from the actual treatment effect and can dramatically impact trial validity.

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The bivalve Lembulus bicuspidatus may enhance denitrification in shelf sediment at the Angola–Benguela Frontal Zone

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: A Neumann --- University of Hamburg, Institute for Geology, Germany A Flohr --- Leibniz Center for Tropical Marine Ecology, Germany

We collected living individuals of the bivalve Lembulus bicuspidatus, which shows an unusual preference for the oxygen-deficient habitat found at the Angola–Benguela Frontal Zone of the southeastern Atlantic. With a series of incubation experiments with 15N-labelled nitrate as a tracer...

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“On paper” and “having papers”: Zimbabwean migrant women’s experiences in accessing healthcare in Giyani, Limpopo province, South Africa

Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Tamuka Chekero --- Anthropology, School of African and Gender Studies, Anthropology and Linguistics, South Africa Fiona C. Ross --- Anthropology, School of African and Gender Studies, Anthropology and Linguistics, South Africa

South Africa is signatory to international protocols that secure migrant rights to healthcare. Its national health policy prohibits discrimination. Pregnant women and children under six years ostensibly enjoy access to free healthcare, irrespective of migration status. What is clear “on...

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Use of diatom indices to categorise impacts on and recovery of a floodplain system in South Africa

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: R Musa --- Department of Zoology, South Africa R Greenfield --- Department of Zoology, South Africa

The trophic status of the Ramsar-accredited Nyl River floodplain, which is stressed by sewage treatment effluents, and its ability to restore normal conditions, were assessed in 2014–2015 using diatoms as biological indicators. The Trophic Diatom Index, Specific Pollution Sensitivity Index...

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PAHs, OCPs and PCBs in sediments from three catchments in Durban, South Africa

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: T Vogt --- Unit for Environmental Sciences and Management, South Africa R Pieters --- Unit for Environmental Sciences and Management, South Africa BK Newman --- Coastal Systems Research Group, Council for Scientific and Industrial Research, South Africa

Polycyclic aromatic hydrocarbons (PAHs), organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) were analysed from sediment samples collected in 2012 from rivers, surface runoff canals and estuaries in three highly urbanised catchments in durban, KwaZulu-Natal, South Africa. PAHs were ubiquitous, at...

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Peatland substrates in northern KwaZulu-Natal: a study of the forming environments, properties and an approach towards classification

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Marvin Gabriel --- Faculty of Life Science, Germany Camelia Toader --- Faculty of Mathematics and Natural Sciences, Germany Franziska Faul --- Faculty of Earth and Environmental Sciences, Germany Niko Roßkopf --- Faculty of Life Science, Germany Piet-Louis Grundling --- Centre for Environmental Management, South Africa Cornelius Wilhelm van Huyssteen --- Department of Soil, Crop, and Climate Sciences, South Africa Jutta Zeitz --- Faculty of Life Science, Germany

Peatlands in South Africa are rare and fulfil important ecological functions but are threatened by degradation. Because of this peatlands have gained increasing attention from scientists during the last two decades. However, knowledge of the peatland substrates and the means...

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Assessment of noise-levels of generator-sets in seven cities of South-Southern Nigeria

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Osagie Ibhadode --- Building Research Department, Nigeria I. T. Tenebe --- Department of Civil Engineering, Nigeria P. C. Emenike --- Department of Civil Engineering, Nigeria O. S. Adesina --- Dept. of Mathematical Science, Nigeria A. F. Okougha --- Science Laboratory Technology Research Department, Nigeria F. O. Aitanke --- Department of Production Engineering, Nigeria

Noise pollution has been shown to be a global health hazard and this could be aggravated by the use of noise-emitting generators. Therefore, this study aims to determine the Sound Pressure Levels Sound Power Levels as well as Noisiness of...

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Birds adopting weaver nests for breeding in Africa

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: H Dieter Oschadleus --- Animal Demography Unit, Department of Biological Sciences, South Africa

Weavers build domed, long-lasting nests that may also be adopted by other species for breeding, probably reducing the energetic costs of nest building to varying degrees. In an extensive literature search, 57 species were found to have at least one...

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Tumour and treatment factors influencing the outcome of chemo-radiation in stage IIB cervical cancer: a single institution experience

Item type: Journal Article • Journal: Southern African Journal of Gynaecological Oncology • Authors: Mtabeni Jemu --- Division of Radiation Oncology, South Africa Leon van Wijk --- Division of Radiation Oncology, South Africa Michelle Parker --- Radiobiology Section, Division of Radiation Oncology, South Africa Glenn Jones --- School of Clinical Medicine and Research, Bahamas

Objective: This study examined the effects of treatment and tumour factors on the overall survival of patients completing chemo-radiation for stage IIB cervical cancer, to identify modifiable factors that might improve outcome.

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Effect of stocking density on vegetation and animal performance within the semi-arid shrublands of the Karoo, South Africa

Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Christiaan J Harmse --- Northern Cape Department of Agriculture, Land Reform and Rural Development, South Africa Hannes J Gerber --- Northern Cape Department of Agriculture, Land Reform and Rural Development, South Africa

As the primary land use in the Karoo, extensive small-stock farming contributes significantly towards the agricultural economy of the region. However, the sustainability of this practice has been questioned for many years. This led to the establishment of a long-term...

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Determinants of market participation and marketing channels in smallholder groundnut farming: A case of Mudzi district, Zimbabwe

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Nelson Mango --- International Centre for Tropical Agriculture, Zimbabwe Clifton Makate --- International Centre for Tropical Agriculture, Zimbabwe Nicola Francesconi --- Technical Center for Agricultural and Rural Cooperation (CTA), The Netherlands Matthias Jager --- International Centre for Tropical Agriculture (CIAT), Colombia Mark Lundy --- International Centre for Tropical Agriculture (CIAT), Colombia

This paper investigates the factors that are associated with market participation and choice of marketing channels by smallholder groundnut farmers in a semi-arid district of Zimbabwe. It contributes to the existing body of knowledge on groundnuts, especially the marketing aspect...

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Alternative method for the identification of critical nodes leading to voltage instability in a power system

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Isaiah G. Adebayo --- Department of Electrical Engineering, South Africa Adisa A. Jimoh --- Department of Electrical Engineering, South Africa Adedayo A. Yusuff --- Department of Electrical and Mining Engineering, South Africa Yanxia Sun --- Department of Electrical and Electronic Engineering Science, South Africa

The introduction of new operation enhancement technologies plus increasing application of power electronics, coupled with the continuous increase in load demand, has increased the risk of power networks to voltage instability and susceptibility to voltage collapse. This frequent occurrence of...

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Weed density and biomass are reduced and plant growth and seed yield increased in common bean after solarisation with clear and black plastic

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Elizabeth Ngadze --- Department of Crop Science, Zimbabwe Arnold B Mashingaidze --- Department of Crop Science, Zimbabwe Julia Sibiya --- Department of Crop Science, Zimbabwe

Common bean is highly sensitive to early weed competition, which severely reduces growth and yield. An experiment was carried out in Zimbabwe in the 2002/03 and 2003/04 seasons to assess the effectiveness of solarisation in controlling weeds in beans. Four...

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Staff and student health and wellness at the Faculty of Medicine and Health Sciences, Stellenbosch University: current status and needs assessment

Item type: Journal Article • Journal: South African Family Practice • Authors: N Koen --- Department of Global Health, Division of Human Nutrition, South Africa L Philips --- Department of Global Health, Division of Human Nutrition, South Africa S Potgieter --- Department of Global Health, Division of Human Nutrition, South Africa Y Smit --- Department of Global Health, Division of Human Nutrition, South Africa E van Niekerk --- Department of Global Health, Division of Human Nutrition, South Africa DG Nel --- Centre for Statistical Consultation, South Africa J Visser --- Department of Global Health, Division of Human Nutrition, South Africa

Background: Emphasis is currently placed on the importance of employee and student wellness initiatives. The aim was to assess staff and student health status at the Faculty of Medicine and Health Sciences (FMHS), Stellenbosch University (SU), and to conduct a...

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Carbohydrate-derived fulvic acid wellness drink: its tolerability, safety and effect on disease markers in pre-ART HIV-1 positive subjects

Item type: Journal Article • Journal: South African Family Practice • Authors: ME Botes --- Department of Internal Medicine, South Africa IS Gilada --- Private practice, India JR Snyman --- Consultant Fulhold (Pty) Ltd, South Africa JPL Labuschagne --- Private Statistician, South Africa

Background: Many people take wellness drinks on a daily basis to enhance physical and emotional well-being. The safety and/or efficacy of these are not always known or even established in the populations likely to consume these. The safety, tolerability and...

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Technological advancement and modes of existence in medicinal plant research

Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Josh B. Cohen --- Anthropology Section, School of African and Gender Studies, Anthropology and Linguistics, South Africa

This paper examines the practices and knowledge of kruiedokters [herb doctors] and a phytochemist engaging with healing properties of plants found in Namaqualand, Northern Cape Province. Technological and theoretical advancements in the natural and social sciences toward more holistic or...

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Therapeutic powers of medicinal plants used by traditional healers in Kavango, Namibia, for mental illness

Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Michael Murundu Shirungu --- Academic Affairs, Namibia Ahmad Cheikhyoussef --- Multidisciplinary Research Centre, Science and Technology Division, Namibia

This paper examines the position, usage and healing power of medicinal plants in the treatment of mental illness in two regions in the Kavango, Namibia. It focuses in particular on three common, locally identified mental disorders, namely nyambi, kasenge, and...

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Innovative solutions and women empowerment: Implications for sustainable development goals in Nigeria

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Yetunde A. Aluko --- Nigerian Institute of Social and Economic Research (NISER), Nigeria Oluwakemi B. Okuwa --- Nigerian Institute of Social and Economic Research (NISER), Nigeria

This paper presents an analysis of patterns of university interaction for innovation that engenders inclusive development in Nigeria. Specifically, it explains innovative solutions for women empowerment that occurred through interaction between the University of Ibadan and the Ile-Ogbo community and...

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Rotation-end financial performance of vegetation control on Eucalyptus smithii in South Africa

Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Keith M Little --- School of Natural Resource Management, South Africa Anssi Ahtikoski --- Natural Resources Institute Finland, Finland Andrew R Morris --- Institute for Commercial Forestry Research, South Africa

Control of competing vegetation during eucalypt regeneration is important but the cost-benefit of varying levels of control is not well understood. A trial was initiated to quantify the impact of five vegetation control treatments on Eucalyptus smithii R.T.Baker. to determine...

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The age and growth of hottentot seabream Pachymetopon blochii before and after the South African linefish state of emergency in 2000

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MW Farthing --- Department of Ichthyology and Fisheries Science, South Africa AC Winkler --- Department of Ichthyology and Fisheries Science, South Africa K Anderson --- Department of Ichthyology and Fisheries Science, South Africa S Kerwath --- Branch: Fisheries Management, Department of Agriculture, Forestry and Fisheries (DAFF), South Africa C Wilke --- Branch: Fisheries Management, Department of Agriculture, Forestry and Fisheries (DAFF), South Africa WM Potts --- Department of Ichthyology and Fisheries Science, South Africa

The hottentot seabream Pachymetopon blochii is a small-sized (maximum 2.67 kg) sparid endemic to southern Africa. It is an important target in South Africa's Western Cape traditional linefishery, particularly in the absence of more valuable pelagic species (such as Thyrsites...

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Effects of exposure to an intensive HIV-prevention programme on behavioural changes among female sex workers in Nairobi, Kenya

Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Ravi Prakash --- Karnataka Health Promotion Trust (KHPT), India Parinita Bhattacharjee --- Department of Community Health Sciences, Canada Andrea Blanchard --- Department of Community Health Sciences, Canada Helgar Musyoki --- National AIDS and STI Control Programme (NASCOP), Ministry of Health, Kenya John Anthony --- Department of Community Health Sciences, Canada Joshua Kimani --- Department of Community Health Sciences, Canada Gloria Gakii --- Partners for Health and Development in Africa (PHDA), Kenya Martin Sirengo --- National AIDS and STI Control Programme (NASCOP), Ministry of Health, Kenya Nicholas Muraguri --- Ministry of Health (MoH), Kenya Elizabeth Mziray --- The World Bank, USA Lombe Kasonde --- The World Bank, USA James Blanchard --- Department of Community Health Sciences, Canada Shajy Isac --- Department of Community Health Sciences, Canada Stephen Moses --- Department of Community Health Sciences, Canada

While Kenya has had a long-standing national HIV-prevention programme, evidence on the level of exposure to its interventions and related effects on behavioural changes among female sex workers (FSWs) is limited. Using cross-sectional behavioural data collected in 2013 from 1...

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Studies on the biology of Nile tilapia (Oreochromis niloticus) in Lake Victoria, Kenya: in light of intense fishing pressure

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: E Yongo --- Department of Fisheries and Aquatic Sciences, Kenya N Outa --- Department of Biological Sciences, Kenya K Kito --- Graduate School of Fisheries, Japan Y Matsushita --- Graduate School of Fisheries, Japan

Nile tilapia Oreochromis niloticus is now the most abundant and commercially important tilapiine in Lake Victoria. From the total of 1 512 fish sampled from commercial gill net fisheries during 2014 and 2015, 809 (54%) were males and 672 (44%)...

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Biodiversity and ecology of epilithic diatoms in the Agnéby River, Ivory Coast

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: KR N’Guessan --- Laboratoire d’Hydrobiologie et d’Éco-technologie des Eaux-U.F.R, Côte d’Ivoire BRD Aboua --- Laboratoire d’Hydrobiologie et d’Éco-technologie des Eaux-U.F.R, Côte d’Ivoire J Tison-Rosebery --- Irstea-ur eabx, France A Ouattara --- Laboratoire d’Environnement et de Biologie Aquatique, UFR-Sciences et Gestion de l’Environnement, Côte d’Ivoire EP Kouamelan --- Laboratoire d’Hydrobiologie et d’Éco-technologie des Eaux-U.F.R, Côte d’Ivoire

The ecology and taxonomy of the epilithic diatom flora of the Agnéby River, Ivory Coast were studied in 2012. Ten sites were investigated and diatoms were sampled on glass slides immersed for a period of 30 days during the wet...

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First records of Atyoida serrata (CS Bate, 1888) from South Africa (Crustacea: Caridea: Atyidae)

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: M Coke --- , South Africa

Collections of Atyoida serrata (CS Bate, 1888) are reported from KwaZulu-Natal, South Africa for the first time. This species is currently known only from the lower reaches of the Mgeni, Vungu and Mtamvuna river systems where it occupies rocky cascades...

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Sustainable tourism development in Amsterdam Oud-West

Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Thea Noordeloos --- International Hospitality & Service Management, The Netherlands

In many popular tourism destinations in the world, rapid tourism growth is occurring. The Netherlands has also experienced tourism growth, with an expected increase of almost 6 million international tourists in 10 years. Amsterdam is the main destination in this...

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Exploring the links between gender, dwelling, and career orientations of African emerging adults

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Tshepo Matjie --- Department of Industrial and Organisational Psychology, South Africa Melinde Coetzee --- Department of Industrial and Organisational Psychology, South Africa

The study explored the socio-ecological (i.e. gender and geographical location) influences on the career orientations of emerging adults. The participants comprised a convenience sample of 159 black African South African university students (57% rural, 43% urban; 63% females, 37% males;...

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Job demands and psychological well-being: Moderating role of occupational self-efficacy and job social support among mid-career academics

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Ike E. Onyishi --- Department of Psychology, Nigeria Fabian O. Ugwu --- Department of Psychology, Nigeria Charity N. Onyishi --- Department of Sociology and Anthropology, Nigeria Felicia O. Okwueze --- Department of Public Administration and Local Government Studies, Nigeria

The study investigated the moderating role of occupational self-efficacy and job social support on the relationship between job demands and psychological well-being among mid-career academics. Participants were 203 academics at three public Nigerian universities (female = 37.93%; mean years of...

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Hope, religiosity, and subjective well-being

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Werner Nell --- Optentia Research Focus Area, South Africa Sebastiaan Rothmann --- Optentia Research Focus Area, South Africa

This study explored the relationship between religiosity, hope, and subjective well-being among 430 South African university students (n = 324) and their family members (n = 104) (70.2% female; 88.4% black; 8.4% white). Data were gathered utilising measures of religiosity,...

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Life stories managing chronic illness: Young adults’ lived experiences with type 1 diabetes

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Marietjie Willemse --- School for Psychosocial Health, Optentia Research Focus Area, South Africa Elmari Deacon --- School for Psychosocial Health, Optentia Research Focus Area, South Africa David Segal --- School for Psychosocial Health, Optentia Research Focus Area, South Africa

This study aimed to characterise diabetes management experiences of South African young adults living with well-controlled type 1 diabetes (n = 8, female = 5, male = 3, age range = 20–25). The young adults told life stories managing their...

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Social determinants of subjective well-being among young adults living in the Eastern Cape, South Africa

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: David Morton --- Department of Nursing Science, Faculty of Health Sciences, South Africa Dalena van Rooyen --- Department of Nursing Science, Faculty of Health Sciences, South Africa Danie Venter --- Department of Nursing Science, Faculty of Health Sciences, South Africa Lena Andersson --- Department of Social Work, Faculty of Social Sciences, Sweden

We investigated the relationships between certain social determinants (age, gender, marital status, education, income, and employment) and subjective well-being (SWB) in a young adult population in the Eastern Cape Province in South Africa. The participants consisted of 977 persons aged...

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Seasonality, habitat type and locality influenced bird assemblage structure in Nigeria

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Sulaiman I Muhammad --- Department of Biological Sciences, Nigeria Rosli Ramli --- Institute of Biological Sciences, Faculty of Science, Malaysia Amy Y Then --- Institute of Biological Sciences, Faculty of Science, Malaysia

This is the first report of the avian assemblage in the study area of Dutse, Nigeria. In addition to recording bird species, the effects of season, dominant vegetation structure, locality and anthropogenic activities on bird abundance, species richness and diversity...

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First report on OH-PAHs in South African Clarias gariepinus bile from an urban impacted system

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: W Pheiffer --- Water Research Group, Unit for Environmental Science and Management, South Africa N Bortey-Sam --- Laboratory of Toxicology, Department of Environmental Veterinary Science, Japan Y Ikenaka --- Water Research Group, Unit for Environmental Science and Management, South Africa SMM Nakayama --- Laboratory of Toxicology, Department of Environmental Veterinary Science, Japan H Mizukawa --- Department of Environmental Veterinary Science, Graduate School of Veterinary Medicine, Japan M Ishizuka --- Laboratory of Toxicology, Department of Environmental Veterinary Science, Japan NJ Smit --- Water Research Group, Unit for Environmental Science and Management, South Africa R Pieters --- Water Research Group, Unit for Environmental Science and Management, South Africa

The concentrations of selected hydroxylated polycyclic aromatic hydrocarbons (OH-PAHs) were determined in the bile of the African sharptooth catfish Clarias gariepinus from impoundments in the urban impacted Klip River system in Soweto, South Africa. Fish were sampled from three impoundments...

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Impacts of fundamental changes to Soil Taxonomy

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: John M Galbraith --- Department of Crop and Soil Environmental Sciences, USA Mark H Stolt --- Department of Natural Resources Science, USA Martin C Rabenhorst --- Department of Environmental Science and Technology, USA Michel D Ransom --- Department of Agronomy, USA

Soil Taxonomy is one of the dominant soil classification systems in the world, but has undergone revisions on a regular basis since 1983. It is larger and some parts have become difficult to apply without considerable experience. Some pedologists that...

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Evaluating the effects of catch-and-release angling on Cape stumpnose Rhabdosargus holubi in a South African estuary

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: NK Arkert --- Department of Ichthyology and Fisheries Science, South Africa A-R Childs --- Department of Ichthyology and Fisheries Science, South Africa MC Parkinson --- Department of Ichthyology and Fisheries Science, South Africa AC Winkler --- Department of Ichthyology and Fisheries Science, South Africa E Butler --- Department of Ichthyology and Fisheries Science, South Africa S Mannheim --- Department of Ichthyology and Fisheries Science, South Africa WM Potts --- Department of Ichthyology and Fisheries Science, South Africa

Fisheries managers are increasingly promoting catch-and-release (C&R) to manage recreationally angled fish stocks. Despite this, there is a scarcity of information on the effects of C&R on estuarine-dependent species. Cape stumpnose Rhabdosargus holubi dominates the recreational fisheries catch and provides...

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Assessment of the likely sensitivity to climate change for the key marine species in the southern Benguela system

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: K Ortega-Cisneros --- Department of Ichthyology and Fisheries Science, South Africa S Yokwana --- Department of Ichthyology and Fisheries Science, South Africa W Sauer --- Department of Ichthyology and Fisheries Science, South Africa K Cochrane --- Department of Ichthyology and Fisheries Science, South Africa A Cockcroft --- Branch: Fisheries Management, Department of Agriculture, Forestry and Fisheries (DAFF), South Africa NC James --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa WM Potts --- Department of Ichthyology and Fisheries Science, South Africa L Singh --- Branch: Fisheries Management, Department of Agriculture, Forestry and Fisheries (DAFF), South Africa M Smale --- Department of Zoology and Coastal and Marine Research, South Africa A Wood --- Gleneagles Environmental Consulting, South Africa G Pecl --- Institute for Marine and Antarctic Studies, Australia

Climate change is altering many environmental parameters of coastal waters and open oceans, leading to substantial present-day and projected changes in the distribution, abundance and phenology of marine species. Attempts to assess how each species might respond to climate change...

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Socioeconomic dynamics of the Ghanaian tuna industry: a value-chain approach to understanding aspects of global fisheries

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: E Drury O’Neill --- Stockholm Resilience Centre, Sweden NK Asare --- Department of Fisheries and Aquatic Sciences, Ghana DW Aheto --- Department of Fisheries and Aquatic Sciences, Ghana

This study investigated how an industrial tuna fishery functions in terms of procedures, practices, governance and finance in the context of Ghana, West Africa. Tuna is Ghana’s biggest seafood export, contributing significantly to the domestic fisheries sector. A case-study approach...

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Socio-economic and environmental analysis of wind power projects as viable renewable energy resources in Kenya

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Victor Ongoma --- Key Laboratory of Meteorological Disaster, Ministry of Education (KLME)/Joint International Research Laboratory of Climate and Environment Change (ILCEC)/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters (CIC-FEMD), People’s Republic of China

The demand for power in Kenya is on the increase with the ongoing growth of the country’s economy. There is a need for the country to balance energy efficiency, sustainability and low-carbon technologies. This entails drafting and implementing policies and...

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Applications of small-scale, stand-alone wind energy conversion systems in rural Cross River State, Nigeria

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Fidelis I. Abam --- Energy, Exergy and Environment Research Group (EEERG), Mechanical Engineering Department, Nigeria Olayinka S. Ohunakin --- The Energy and Environment Research Group (TEERG), Department of Mechanical Engineering, Nigeria

The study presents the wind energy potential (WEP) for six locations in Cross River State, Nigeria. The objective of the study was to assess the WEP of the selected sites for electricity generation, using small size wind energy conversion systems...

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Mapping dynamics of low-carbon energy innovation for small hydropower technology in Nigeria

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Maruf Sanni --- National Centre for Technology Development, Federal Ministry of Science and Technology, Nigeria

The urgent need for clean innovative energy systems is widely recognized amidst increasing concerns over energy insecurity, climate change and other environmental impacts of a carbon-constrained economy. Several renewable energy technologies such as small hydropower (SHP) are poised to play...

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A comparative study of selected multi-criteria decision-making methodologies for location selection of very large concentrated solar power plants in Nigeria

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Olayinka S. Ohunakin --- The Energy and Environment Research Group (TEERG), Mechanical Engineering Department, Nigeria Burak Omer Saracoglu --- Orhantepe Mahallesi, Tekel Caddesi, Istanbul, Turkey

This work studies the location selection of very large concentrated solar power plants (VLCSPPs) in Nigeria using five Multi-Criteria Decision Making (MCDM) methodologies including: Analytic Hierarchy Process (AHP), Consistency-Driven Pairwise Comparisons (CDPC), Decision Expert for Education (DEXi), Elimination and Choice...

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Flexural, water absorption and wear responses of green composites from bio-resources

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Isiaka Oluwole Oladele --- Department of Metallurgical and Materials Engineering, Nigeria Oluwaseun Olayinka Abegunde --- Department of Metallurgical and Materials Engineering, Nigeria Abdullahi Olawale Masud --- Department of Metallurgical and Materials Engineering, Nigeria

This research was carried out to produce corn husk fibre reinforced recycled waste paper-based composites using natural rubber as a binder. The paper pulp was obtained by soaking waste paper in water for 24 hours after which it was ground...

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Inoculum availability and infection patterns of Fusarium mangiferae, the causal agent of mango malformation in South Africa

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Maritha H Schoeman --- Agricultural Research Council–Tropical and Subtropical Crops, South Africa Ncobile B Zulu --- Agricultural Research Council–Tropical and Subtropical Crops, South Africa F André Botha --- Agricultural Research Council–Tropical and Subtropical Crops, South Africa Frikkie J Calitz --- Agricultural Research Council–Biometry, South Africa

Mango malformation, caused by Fusarium mangiferae, is a serious disease of mango in South Africa, causing severe economic losses annually. The occurrence of conidia of F. mangiferae on malformed inflorescences and leaves and the timing of airborne infections were studied...

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Weed species composition and density under conservation agriculture with varying fertiliser rate

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Conrad Baker --- Agricultural Research Council–Institute for Soil, Climate and Water, South Africa Ignacio C Madakadze --- Department of Plant Production and Soil Science, South Africa Corrie M Swanepoel --- Agricultural Research Council–Institute for Soil, Climate and Water, South Africa Zira Mavunganidze --- Department of Plant Production and Soil Science, South Africa

Conservation agriculture (CA) is a sustainable management system that optimises yield while reducing input costs. However, reduction in tillage intensity and frequency as practised under CA generally alters weed densities and composition. The objective of the study was to evaluate...

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(Mis)communicating through Conflicts: Chinese Restaurant Owners and Zimbabwean Employees in Johannesburg

Item type: Journal Article • Journal: Africa Journal of Management • Authors: Ying-Ying Tiffany Liu --- Department of Sociology and Anthropology, Canada

South Africa is home to the two largest populations of foreign nationals on the continent – migrants from China and Zimbabwe – and many of them are involved in the Chinese restaurant sector. Based on original ethnographic research, this paper...

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The padloper’s tortuous path (Chelonia: Testudinidae): Two genera, not one

Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Margaretha D. Hofmeyr --- , , South Africa William R. Branch --- , , South Africa

Since 1957, all padlopers were considered Homopus, which was an anomaly, because only two species have four claws on the front and hind limbs. The revival of the genus Chersobius for the five-toed species (signatus, boulengeri and solus) now limits...

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Factors of regular sponsorship of African children: A cross-ethnic study

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Jae-kyeong Kim --- School of Management, South Korea June-hyuk Kwon --- Department of Business Administration, South Korea Nam-hyun Lee --- Department of Performing Arts, South Korea Hyun-ju Choi --- Department of Cultural & Arts Management, South Korea Seung-hye Jung --- School of Dance, South Korea Hyuck-jin Lee --- Department of Business Administration, South Korea Joon-ho Kim --- Department of Business Administration, South Korea

This study examined psychological well-being influences of personal factors on regular sponsorship of, or donation to, African children living in Africa. Study participants (N = 597) were 338 Koreans (50.3% female, n = 170) and 259 Chinese (56.8% female, n...

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Acquired physical disability: Personal meanings in a rural South African setting

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Marubini Christinah Sadiki --- Department of Psychology, South Africa Makondelele Radzilani-Makatu --- Department of Psychology, South Africa Marty Prudence Zikhali --- Department of Sociology, South Africa

This study explored personal meanings attached to acquired physical disabilities in a rural South African community. Informants were seven adults with disability (females = 4; age range = 18 to 55 years). They responded to semi-structured face-to-face interviews on the meanings they attached to...

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Sustainable tourism development in Amsterdam Oud-West

Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Thea Noordeloos --- International Hospitality and Service Management, The Netherlands

The Netherlands is currently experiencing rapid tourism growth, with Amsterdam being the main destination. Academics widely discuss the impact of tourism on the environment, the economy and society, and stress the need for sustainable tourism development. Eight semi-structured interviews were...

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Environmental influence on phytoplankton communities in the northern Benguela ecosystem

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: R Barlow --- , South Africa T Lamont --- , South Africa D Louw --- , Namibia M-J Gibberd --- , South Africa R Airs --- , United Kingdom A van der Plas --- , Namibia

An investigation of surface phytoplankton communities was undertaken on the shelf of the northern Benguela upwelling ecosystem during austral autumn (May) and spring (September), along latitudinal transects at 20° S and 23° S, from 2 to 70 nautical miles offshore,...

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The autumn occurrence and spatial distribution of cetaceans in the waters of Mauritania during a geophysical survey in 2012

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: G Russell --- , United Kingdom A Sánchez-Cabanes --- , United Kingdom M Nimak-Wood --- , United Kingdom

This study aimed to identify the occurrence and spatial distribution of cetaceans in Mauritanian waters (eastern Atlantic). A geophysical survey was conducted over 92 days between September and December 2012. Over 967 km was surveyed, with 1 017 h of...

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Kelp forests in False Bay: urchins vs macroalgae in South Africa’s southwest coast biogeographical transition zone

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: K Morris --- , South Africa LK Blamey --- , South Africa

Kelp forests along South Africa's southwest coast occur in a region of biogeographical overlap. Commonly referred to as transition-zone kelp forests, these dynamic ecosystems are particularly susceptible to grazing from species such as urchins. This study explores relationships between urchins...

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Distribution and habitat use of Indo-Pacific bottlenose dolphins Tursiops aduncus along the south coast of South Africa

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: OA Vargas-Fonseca --- , South Africa SP Kirkman --- , South Africa D Conry --- , South Africa GM Rishworth --- , South Africa V Cockcroft --- , South Africa PA Pistorius --- , South Africa

The distribution and habitat use of the Indo-Pacific bottlenose dolphin Tursiops aduncus along the south coast of South Africa was investigated using bi-monthly boat-based surveys, from 2013 to 2016, over a distance of 145 km between the Goukamma and Tsitsikamma...

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Pre-harvest Curing: Effects on Skin Adhesion, Chemical Composition and Shelf-life of Sweetpotato Roots under Tropical Conditions

Item type: Journal Article • Journal: East African Agricultural and Forestry Journal • Authors: Aditya Parmar --- Department of Agricultural and Biosystems Engineering, Germany Sascha M. Kirchner --- Department of Agricultural and Biosystems Engineering, Germany Barbara Sturm --- Department of Agricultural and Biosystems Engineering, Germany Oliver Hensel --- Department of Agricultural and Biosystems Engineering, Germany

Excoriation (skinning injury) is a serious post-harvest problem for sweetpotato roots. In industrialized countries, sweetpotatoes are exposed to post-harvest curing to facilitate skin toughening and wound healing. However, in developing regions, such a practice is barely undertaken. Pre-harvest curing (PHC),...

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The breeding ecology of Mallard Anas platyrhynchos at Lake Tonga, north-eastern Algeria

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Aicha Fouzari --- Laboratoire de Conservation des Zones Humides, Algeria Farrah Samraoui --- Laboratoire de Conservation des Zones Humides, Algeria Boudjéma Samraoui --- Laboratoire de Conservation des Zones Humides, Algeria

The breeding ecology of Mallard Anas platyrhynchos was investigated at Lake Tonga, north-eastern Algeria, which is at the southern edge of the species’ range in the Western Palearctic. Breeding was mainly carried out in stumps of alder carr (Alnus glutinosa)...

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Pre-albumin as a marker for predicting weight loss in hospitalised children

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Del-Rossi Sean Quadros --- Department of Pediatrics and Child Health, Kenya Rose Kamenwa --- Department of Pediatrics and Child Health, Kenya Samuel Akech --- Department of Pediatrics and Child Health, Kenya William Macharia --- Department of Pediatrics and Child Health, Kenya

Objectives: This study sought to determine the diagnostic utility of serum pre-albumin in predicting weight loss in hospitalised children.

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Quantification of sorgoleone in sorghum accessions from eight southern African countries

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Handsen Tibugari --- Department of Agronomy, Faculty of Science and Agriculture, South Africa Cornelius Chiduza --- Department of Agronomy, Faculty of Science and Agriculture, South Africa Arnold B Mashingaidze --- Department of Crop Science and Post-Harvest Technology, School of Agricultural Sciences and Technology, Zimbabwe Stanford Mabasa --- Department of Crop Science, Faculty of Agriculture, Zimbabwe

Allelopathic effects of sorghum (Sorghum bicolor (L.) Moench) can ease weed pressure and improve grain yields if cultivars capable of producing high levels of natural chemicals effective in suppressing weeds of economic importance are identified. Three hundred and fifty three...

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Greenhouse evaluation of Trichoderma harzianum for the control of Sclerotinia wilt (Sclerotinia sclerotiorum) of sunflower

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: James R Mathews --- Discipline of Plant Pathology, School of Agriculture, Earth and Environmental Sciences, College of Agriculture and Environmental Sciences, South Africa Benice J Sivparsad --- Discipline of Plant Pathology, School of Agriculture, Earth and Environmental Sciences, College of Agriculture and Environmental Sciences, South Africa Mark D Laing --- Discipline of Plant Pathology, School of Agriculture, Earth and Environmental Sciences, College of Agriculture and Environmental Sciences, South Africa

Sclerotinia sclerotiorum, the causal organism of Sclerotinia wilt, is an economically important disease affecting sunflower in South Africa. The goal of this investigation was to evaluate the potential of a strain of Trichoderma harzianum, T77, for control of S. sclerotiorum...

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Integrated control of mango blossom malformation in South Africa

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Magaritha H Schoeman --- Agricultural Research Council–Tropical and Subtropical Crops, South Africa Ncobile B Zulu --- Agricultural Research Council–Tropical and Subtropical Crops, South Africa F André Botha --- Agricultural Research Council–Tropical and Subtropical Crops, South Africa Frikkie J Calitz --- Agricultural Research Council–Biometry, South Africa

Mango malformation disease (MMD) is a serious disease worldwide, causing severe economic losses annually. In South Africa, recommendations for managing MMD are to break out malformed inflorescences when clearly visible. Despite these recommendations, high incidences of MMD were reported during...

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Effect of cultivar and cutting orientation at planting on sweet potato growth and yield in the Verulam area, South Africa

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Zanele Pakkies --- Department of Agriculture, South Africa Corlina M van Jaarsveld --- Department of Agriculture, South Africa Sydney Mavengahama --- Department of Crop Science, School of Agricultural Sciences, Faculty of Agriculture, Science and Technology, South Africa

Sweet potato production is affected by agronomical practices such as orientation of cuttings at planting and cultivar selection. Thus a study was conducted to test the effect of two cutting orientations at planting (horizontal and vertical) for four sweet potato...

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Validation of age-based body mass estimation methods in toddlers and pre-school children

Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: Karin Booysen --- Private Practice, South Africa Johannes Marthinus Dippenaar --- Department of Maxillo-Oral-Facial Surgery, Oral Health Centre, South Africa Francois Jacobus Smith --- Department of Anaesthesiology, South Africa

Background: Body mass is commonly used to determine medication dosages and equipment size. In emergency situations (including cases necessitating surgery) weighing paediatric patients can be impractical. Clinicians may use any of several body mass estimation techniques to surmount this obstacle...

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Microfilarial infections associated with body mass loss of Village Weavers Ploceus cucullatus

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Andong F Atawal --- AP Leventis Ornithological Research Institute, Nigeria Anthony C Mgbeahuruike --- Department of Veterinary Pathology and Microbiology, Faculty of Veterinary Medicine, Nigeria Martijn Hammers --- AP Leventis Ornithological Research Institute, Nigeria

Haemoparasitic infections in wild birds have been widely studied in order to understand parasite–host relation- ships, but our understanding of their impact on the host's fitness is still limited. In this study, we quantified the associations between microfilarial infections and...

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Raptors breeding on weaver nests in trees and on man-made structures

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: H Dieter Oschadleus --- School of Life Sciences, South Africa

Several raptor species nest on top of large weaver nests. These weaver nests are usually sited in trees, but 11.7% of Red-billed Buffalo-Weaver Bubalornis niger and 25.7% of Sociable Weaver Philetairus socius nests occur on man-made structures. In an extensive...

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The Tower of London-DX 2nd Edition test: Preliminary norms for educationally disadvantaged Xhosa-speaking individuals

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Rumaine Naidoo --- Department of Psychology, South Africa Ann B. Shuttleworth-Edwards --- Department of Psychology, South Africa Ryan Botha --- Department of Psychology, South Africa Ida Pienaar --- Department of Psychology, South Africa

This study aimed to construct preliminary normative indications for educationally disadvantaged, Xhosa-speaking South African individuals on the Tower of London-Drexel University 2nd Edition test (TOL-DX 2nd Edition). The TOL-DX 2nd Edition is a commonly employed neurocognitive measure of executive function...

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Characterisation of the soil pore system in relation to its hydraulic functions in two South African aeolian soil groups

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Achamyeleh G Mengistu --- Department of Soil, Crop and Climate Sciences, South Africa Sabelo SW Mavimbela --- Department of Soil, Crop and Climate Sciences, South Africa Leon D van Rensburg --- Department of Soil, Crop and Climate Sciences, South Africa

The characterisation of soil pores has a prime importance in soil hydrology particularly for soil water management in both irrigated and dryland agriculture. Hence, this study describes the soil pore system in the Clovelly and Hutton soil forms and its...

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A methodological framework for sustainable development with vulnerable communities

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Lucas F.V. Ribeiro --- Environmental Systems Engineering, Canada Dena W. McMartin --- Environmental Systems Engineering, Canada

The Smart Community Development Framework (SCDF) is a methodological framework that selectively identifies and optimizes sustainable development approaches such as permaculture, sustainable livelihood approaches, community-based social marketing, environmental impact assessments and project management to effectively design and introduce clean social...

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The economic cost of unreliable grid power in Nigeria

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Samuel Olowosejeje --- School of Engineering, Nigeria Paul Leahy --- School of Engineering, Republic of Ireland Alan Morrison --- Department of Electrical and Electronic Engineering, School of Engineering, Republic of Ireland

The ever-increasing demand for electrical power in Nigeria, coupled with a limited supply, have restricted the nation's socioeconomic development. The country’s policymakers, aware of this, have formulated and enacted energy development policies in recent years targeted at diversifying the current...

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Influence of retailers’ website system quality factors on online shopping in South Africa

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Yu-Ting Hung-Joubert --- Department of Marketing and Retail Management, Cindy Erdis --- Department of Marketing and Retail Management,

Online shopping, which has grown significantly over the years, has become a popular form of shopping. To succeed, it is important that online retailers ensure that their shopping websites function well and adhere to all aspects of system quality. The...

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Kipchamba Arap Tapotuk’s Music: Oral Narratives, (Hi)story and Culture of the Kalenjin People

Item type: Journal Article • Journal: Eastern African Literary and Cultural Studies • Authors: Charles Kipng’eno Rono --- Literature, Theatre and Film, Kenya

Focusing on the Koilong’eet Band, this paper is an interrogation of how the selected songs by Kipchamba Arap Tapotuk incorporate Kalenjin oral techniques to create a space for narrating the past and the culture of the Kalenjin people. By conducting...

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Adult weight measurement: decoding the terminology used in literature

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Christen Renée Lahner --- Department of Human Nutrition and Dietetics, South Africa

There are various types of names given to describe the adult weight measurement. The most commonly used terms (actual body weight, estimated body weight, ideal body weight and adjusted body weight) have been defined and summarized to assist in their...

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Undernutrition among children under five in the Bandja village of Cameroon, Africa

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Léonie Dapi Nzefa --- Department of Public Health, Cameroon Francisca Monebenimp --- Department of Public Health, Cameroon Christofer Äng --- Department of Clinical Medicine, Umeå, Sweden

Background: Sub-Saharan Africa has a long history of struggling with child undernutrition. The prevalence of undernutrition is still high and knowledge about this public health problem and the underlying causes is essential for children’s health.

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Restorative effects of awe on negative affect after receiving negative performance feedback

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Cynthia Atamba --- Department of Business Administration, China

The present study investigated the discrete positive effects of awe on negative job affect (NJA) arising from receiving negative performance feedback from a work supervisor or a co-worker. The participants were 131 business professionals and students at a large university...

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Caring for children with an intellectual disability: An exploratory qualitative study

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Tshimangadzo Getrude Sadiki --- Department of Psychology, South Africa Solomon Mashegoane --- Department of Psychology, South Africa

This study explored family caregiver experiences of children with an intellectual disability in a rural South African day-care centre. The family caregivers (N = 15; mothers = 60%; age range = 35 to 68 years) completed in-depth interviews regarding their...

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A simplified control scheme for electric vehicle-power grid circuit with DC distribution and battery storage systems

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Kabeya Musasa --- Department of Electrical and Electronic Engineering Science, South Africa Musole Innocent Muheme --- Department of Electrical and Electronic Engineering Science, South Africa Nnamdi Ikechi Nwulu --- Department of Electrical and Electronic Engineering Science, South Africa Mammo Muchie --- DST/NRF SARChI Research Professor on Science, Technology and Innovation Studies, Tshwane University of Technology, Pretoria, South Africa

The direct current (DC) system is becoming the major trend for future internal power grid of electric vehicles (EVs). Since DC power grid system has a different nature to conventional alternating current (AC) grid system, appropriate design of the controller...

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Exchange rate impact on output and inflation: A historical perspective from Zimbabwe

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Nyasha Mahonye --- School of Economic and Business Sciences (SEBS), South Africa Tatenda Zengeni --- Competition and Tariff Commission of Zimbabwe, Harare, Zimbabwe

This research looks at the inflationary effect of currency devaluation and its contractionary effect on real output growth in Zimbabwe. The study uses quarterly data from 1990 to 2006 and utilizes the Johansen co-integration regression test and vector error correction...

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Weight bias and eating behaviours of persons with overweight and obesity attending a general medical practice in Durban, South Africa

Item type: Journal Article • Journal: South African Family Practice • Authors: RD Govender --- Department of Family Medicine, United Arab Emirates S Al-Shamsi --- Department of Internal Medicine, United Arab Emirates D Regmi --- Department of Family Medicine, United Arab Emirates

Background: The consequences of obesity for physical health and non-communicable illnesses are well established, but the impact on psychosocial well-being in persons with obesity is much less understood. This study aimed to assess psychosocial constructs such as weight bias affecting...

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Forage seed value chain analysis in a subhumid region of Zimbabwe: perspectives of smallholder producers

Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Irenie Chakoma --- Graduate School of Business and Leadership, South Africa Bibi Zaheenah Chummun --- Graduate School of Business and Leadership, South Africa

In smallholder systems, farmers are increasingly becoming aware of the need to improve livestock productivity through production of quality fodder. This is in response to scarcity of feed, particularly in the dry season, associated with seasonal variations, land degradation and...

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Implications of Transforming Household Livelihoods through Villagization in Conserving Forest Resources in Southwest Ethiopia: A Case Study of Mengeshi District, Gambela Region

Item type: Journal Article • Journal: East African Agricultural and Forestry Journal • Authors: Abera Aba --- Jimma University College of Agriculture and Veterinary Medicine, Ethiopia Kaba Urgessa --- Department of Natural Resources Management, Ethiopia Zerihun Kebebew --- Department of Natural Resources Management, Ethiopia

Villagization brings scattered households together into a defined area with the aim of transforming living conditions through providing social and economic services. As the forest in Mengeshi district, southwest Ethiopia, has been destroyed through shifting cultivation, the study aims at...

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Effects of Tillage System and Weed Control Method on Weed Infestation and Yield of Lowland Rice (Oryza sativa L.)

Item type: Journal Article • Journal: East African Agricultural and Forestry Journal • Authors: Eli Kuchi Jiya --- Department of Crop Production, Nigeria Emmanuel Daniya --- Department of Crop Production, Nigeria Musa Gimba Matthew Kolo --- Department of Crop Production, Nigeria

A two–year experiment was carried out to determine the effects of tillage (heap and level, hoe plough and herbicide-based zero tillage) and weed control methods (no weeding, hoe weeding at 25 days after transplanting (DAT), hoe weeding at 25 and...

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Management of the Global Fund aid programme in Botswana: challenges and prospects for health services delivery

Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Dintle Molosiwa --- Chemonics International Inc., Botswana Tyanai Masiya --- School of Public Management and Administration, South Africa Godfrey Maringira --- School of Humanities, Anthropology, South Africa

This paper examines the institutional management of the Global Fund to Fight AIDS, Tuberculosis and Malaria (GFATM) in Botswana. We analyse the often contested roles of the state and non-governmental organisations (NGOs) as recipients of GFATM and partners in extending...

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Evaluation of the early warning indicators of HIV drug resistance surveillance system in Manicaland province, Zimbabwe

Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Anesu Marume --- Department of Community Medicine, College of Health Sciences, Zimbabwe Admire Zikiti --- Department of Community Medicine, College of Health Sciences, Zimbabwe Byron Chapoterera --- Department of Community Medicine, College of Health Sciences, Zimbabwe Julita Maradzika --- Department of Community Medicine, College of Health Sciences, Zimbabwe

More than 1.1 million people currently receive lifelong antiretroviral treatment in Zimbabwe following the adoption of the test and treat strategy in 2017. The huge numbers of people on antiretroviral therapy (ART), combined with HIV’s error-prone replication, increases the probability...

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Sexual behaviour among adolescents living with the human immunodeficiency virus in Zimbabwe: educational implications

Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Peter T Sandy --- Health Studies, South Africa Tichaona Vhembo --- Health Studies, South Africa Tebogo K Molotsi --- Health Studies, South Africa

The incidence of HIV infection is increasing among adolescents in Zimbabwe. This rise in incidence is partly due to risky sexual behaviours yet there are no published research studies on sexual behaviours of HIV-positive adolescents in Zimbabwe. Hence, this study,...

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An integrative review of South Africa’s approach to victim support

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Marelize Schoeman --- Department of Criminology and Security Science, South Africa

This integrative review seeks to consider the evidence on how crime victims’ rights are served within South Africa’s criminal justice system. Victims view criminal proceeding as the means through which justice for the harms they suffered can be obtained. Such...

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Validation of the work engagement, job satisfaction, psychological empowerment, and organisational citizenship measures in a mining sector setting in Zimbabwe

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Polite Masvaure --- Department of Industial Psychology, South Africa Johanna Hendrina Buitendach --- Department of Industial Psychology, South Africa

This study aimed to validate measures of work engagement, job satisfaction, psychological empowerment, and organisational citizenship for use with employees in a mining enterprise in Zimbabwe. Miners (N = 176, males = 85.2%, females = 1.3%; age range = 24–65...

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Personal growth initiative: Relation to Hedonia and Eudaimonia happiness among South African university students

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Henry D. Mason --- Directorate of Student Development and Support, South Africa

This study examined the relationship between personal growth initiative (PGI) and hedonic and eudaimonic happiness among a sample of South African university students (N = 235; mean age = 20.38, SD = 1.55; female = 61.70%). Students completed measures on...

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Diatoms associated with two South African kelp species: Ecklonia maxima and Laminaria pallida

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: NAS Mayombo --- Department of Biodiversity and Conservation Biology, South Africa R Majewska --- Unit for Environmental Sciences and Management, School of Biological Sciences, South Africa AJ Smit --- Department of Biodiversity and Conservation Biology, South Africa

Kelp forests are believed to host a large biomass of epiphytic fauna and flora, including diatoms, which constitute the base of aquatic food webs and play an important role in the transfer of energy to higher trophic levels. Epiphytic diatom...

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Reef fish and benthic community structures of the Santa Luzia Marine Reserve in the Cabo Verde islands, eastern central Atlantic Ocean

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: R Freitas --- Faculdade de Engenharia e Ciências do Mar, República de Cabo Verde TC Mendes --- Departamento de Ecologia, Brazil C Almeida --- Faculdade de Engenharia e Ciências do Mar, República de Cabo Verde T Melo --- Biosfera I – Associação para Defesa do Meio Ambiente, República de Cabo Verde RC Villaça --- Departamento de Biologia Marinha, Brazil R Noguchi --- Programa de Engenharia Ambiental, Brazil SR Floeter --- Laboratório de Biogeografia e Macroecologia Marinha, Departamento de Ecologia e Zoologia, Brazil CA Rangel --- Centro Nacional de Avaliação da Biodiversidade e de Pesquisa e Conservação do Cerrado (CBC), Brazil CEL Ferreira --- Departamento de Biologia Marinha, Brazil

Understanding ecological structures and the dynamics of reef fish assemblages is a fundamental step in current conservation biology. Patterns of abundance and biomass of reef fish communities of the tropical Cabo Verde Archipelago (eastern central Atlantic Ocean) have not been...

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Spatial distribution, seasonal abundance and exploitation status of shark species in Kenyan coastal waters

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: BK Kiilu --- Kenya Fisheries Services, Kenya B Kaunda-Arara --- Department of Fisheries and Aquatic Sciences, Kenya RM Oddenyo --- Coral Reef Conservation Project, Kenya P Thoya --- Kenya Marine and Fisheries Research Institute, Kenya JM Njiru --- Kenya Marine and Fisheries Research Institute, Kenya

Efforts to conserve and manage shark populations are often hampered by a lack of basic data, such as species-specific landings and distribution ranges. We bridge this gap in coastal East Africa by providing data on the distributions, catch rates, morphometrics,...

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Histological alterations of selected tissues (gill, liver, kidney and stomach) in two common fish species within two eutrophic peri-urban lakes in Zimbabwe

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: B Utete --- Department of Wildlife Ecology and Conservation, Zimbabwe N Mabika --- Department of Anatomy, Zimbabwe J Chiwara --- Department of Applied Biosciences and Biotechnology, Zimbabwe J Makaure --- Department of Applied Biosciences and Biotechnology, Zimbabwe C Phiri --- Department of Freshwater and Fishery Science, Zimbabwe SS Mlambo --- Department of Biotechnology Science, Zimbabwe N Muboko --- Department of Wildlife Ecology and Conservation, Zimbabwe J Tsamba --- Department of Biology, Zimbabwe

Pollution threatens fish health in the eutrophic lakes, Chivero and Manyame, in Zimbabwe. Histopathological tissue alterations of two commonly consumed fish: catfish, Clarias gariepinus, and; tilapia, Oreochromis niloticus, from Lakes Chivero and Manyame were assessed between 2015 and 2016. Seventy-one...

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Addressing education inequality in sub-Saharan Africa

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Folorunso Obayemi Temitope Obasuyi --- Department of Development Studies, Malaysia Rajah Rasiah --- Asia-Europe Institute, University of Malaya, Malaysia

This paper examines the impact of wealth inequality on education inequality in the sub-Saharan African (SSA) countries, including by decomposing inequality across gender. Specifically, it analyzes the impact of wealth concentration on the distribution of educational attainment using a sample...

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Determinants of serum 25-hydroxyvitamin D levels in healthy young adults living in the Western Cape, South Africa

Item type: Journal Article • Journal: South African Family Practice • Authors: J Visser --- Division of Human Nutrition, Department of Global Health, South Africa K Knight --- Division of Human Nutrition, Department of Global Health, South Africa L Philips --- Division of Human Nutrition, Department of Global Health, South Africa W Visser --- Division of Dermatology, South Africa M Wallace --- Cancer Association of South Africa (CANSA), Cape Town, South Africa, DG Nel --- Centre for Statistical Consultation, South Africa R Blaauw --- Division of Human Nutrition, Department of Global Health, South Africa

Background: Vitamin D deficiency is fast emerging as a global pandemic. In South Africa few studies have been conducted to determine the vitamin D status of the healthy population.

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Incidence and Severity of Common Bean (Phaseolus vulgaris L.) Pests in Agro-Ecological Zones and Farming Systems of Western Kenya

Item type: Journal Article • Journal: East African Agricultural and Forestry Journal • Authors: JO Ogecha --- Kenya Agricultural and Livestock Research Organization, Kenya W Arinaitwe --- International Centre for Tropical Agriculture, Kampala Uganda JW Muthomi --- Department of Crop Protection, Kenya V Aritua --- International Centre for Tropical Agriculture, Kampala Uganda JN Obanyi --- Kenya Agricultural and Livestock Research Organization, Kenya

Infestation by insect pests is a serious problem in legume up scaling activities and a threat to future production in Kenya. The survey aimed at determining incidence and severity of insect pests of common beans in different districts and agro-ecological...

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Lack of phylogeographic structure in the endangered Pickersgill’s Reed Frog; Hyperolius pickersgilli (Raw, 1982)

Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Antoinette Kotze --- , South Africa Taryn M.C. Ralph --- , , South Africa Lisa N. Barrow --- , , USA Jeanne Tarrant --- , South Africa Louis du Preez --- , , South Africa M. Thabang Madisha --- , South Africa Desire L Dalton --- , South Africa

The Endangered Pickersgill’s Reed Frog (Hyperolius pickersgilli) is endemic to South Africa and restricted to the KwaZulu-Natal (KZN) coast. The natural habitat of H. pickersgilli is limited to fragmented patches of coastal reed-bed wetland, the majority of which continues to...

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Gratitude, well-being and psychological distress among South African university students

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Henry D. Mason --- Directorate of Student Development and Support, South Africa

This study investigated the associations between gratitude, measures of well-being, and indicators of psychological distress (depression and negative emotion) among South African university students. Data were collected from 198 first-year university students (female = 69.70%; mean age = 20.55 years,...

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Validation of the Depression Anxiety Stress Scale-21 (DASS-21) in a non-clinical sample of South African working adults

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Zonica Dreyer --- Department of Industrial Psychology and People Management, South Africa Carolina Henn --- Department of Industrial Psychology and People Management, South Africa Carin Hill --- Department of Industrial Psychology and People Management, South Africa

This study investigated the psychometric properties of the Depression Anxiety Stress Scale-21 (DASS-21) in a non-clinical sample of working people. Working South African persons (N = 269; females = 62%; mean age = 33, SD = 11.5) completed the DASS-21,...

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Presidential Address: Embracing the Secular in our ‘Sacred Scholarly World’

Item type: Journal Article • Journal: Africa Journal of Management • Authors: David B. Zoogah --- Department of Management and Entrepreneurship, Williams College of Business, USA

In this Address, I reflect on the journey of AFAM with regard to its past, present and future. As a new scholarly community, AFAM is called to the sacred society. Its future therefore should be based on the use of...

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Theoretical turns through tourism taste-scapes: the evolution of food tourism research

Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Sally Everett --- King’s Business School, United Kingdom

This article reflects on the evolution of food tourism research by tracing its conceptual, theoretical and empirical twists and turns over the past few decades. Prompted by some recent systematic reviews of food tourism studies, I draw on literature to...

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Sex work among female workers in the traditional mining sector in Mali – results from the ANRS-12339 Sanu Gundo cross-sectional study in 2015

Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Cheick Haïballa Kounta --- Aix Marseille University, France Luis Sagaon-Teyssier --- Aix Marseille University, France Hubert Balique --- Aix Marseille University, France Fodié Diallo --- ARCAD Sida, Mali Nikos Kalampalikis --- University Lyon 2, France Marion Mora --- Aix Marseille University, France Michel Bourrelly --- Aix Marseille University, France Marie Suzan-Monti --- Aix Marseille University, France Bruno Spire --- Aix Marseille University, France Bintou Dembélé Keita --- ARCAD Sida, Mali

Female sex workers (FSW) in mining sites are considered to be at very high risk of HIV infection. We aimed to characterize FSW at the Kôkôyô artisanal gold mining site in Mali, and identify factors associated with sex work using...

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Foreign direct investment and technology catch-up in post-Mugabe Zimbabwe

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Albert Edgar Manyuchi --- Global Change Institute, School of Animal, Plant and Environmental Sciences, Faculty of Sciences, South Africa

Mugabe’s forced resignation and subsequent policy changes provide prospects for increased inflows of foreign direct investment (FDI) to Zimbabwe. This study employs a System of Innovation (SoI) framework to highlight post-independence Zimbabwe’s technology situation, which has generally deteriorated. It further...

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Design, fabrication and performance evaluation of centrifugal sunflower dehuller for small-scale enterprises in developing countries

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Yuda Lyangalo Benjamin --- Department of Engineering Sciences and Technology, Tanzania Ezra Lazaro --- Department of Engineering Sciences and Technology, Tanzania

Sunflower is grown by small-scale farmers in many developing countries like Tanzania. Lack of effective machines for dehulling sunflower seeds has resulted in high oil losses during extraction, especially for small- and medium-scale enterprise. This paper reports on the design,...

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The impact of slash management, fertilisation and vegetation management on Pinus elliottii pulpwood growth and rotation-end yield

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Noxolo N Ndlovu --- Nelson Mandela University, South Africa Keith M Little --- Nelson Mandela University, South Africa Louis Titshall --- School of Agriculture, Earth and Environmental Sciences, South Africa Carol A Rolando --- Scion, Rotorua, New Zealand

Intensive silviculture (re-establishment) is practised within South African plantations to increase the potential productivity per unit area. Rotation-end productivity benefits are not well documented to support intensive inputs. A trial investigating rotation-end (17 years) impacts of slash management (clear, single...

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Effect of degree and duration of water saturation on iron, manganese and exchangeable cations in wetland soils of Maputaland, KwaZulu-Natal, South Africa

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Brenton Mabuza --- Soil, Crop and Climate Sciences, South Africa Cornelius W van Huyssteen --- Soil, Crop and Climate Sciences, South Africa

Soils of the Maputaland Coastal Plain are naturally grey, do not contain any redoximorphic features, and are therefore problematic to interpret during wetland delineation. This study was consequently initiated to determine if these soils were able to reduce in a...

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A five-year audit of lower limb amputations below the knee and rehabilitation outcomes: the Durban experience

Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: P Manickum --- School of Clinical Medicine, College of Health Sciences, South Africa SS Ramklass --- School of Clinical Medicine, College of Health Sciences, South Africa TE Madiba --- Department of General Surgery, School of Clinical Medicine, College of Health Sciences, South Africa

Introduction: Lower limb amputation (LLA) due to diabetes mellitus (DM) is a growing epidemic worldwide.

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Lifestyle modification in the management of insulin resistance states in overweight/obesity: the role of exercise training

Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: Tshidi Thaane --- Discipline of Biokinetics, Exercise and Leisure Sciences, South Africa; Ayesha A Motala --- Department of Diabetes and Endocrinology, South Africa; Andrew J Mckune --- Discipline of Biokinetics, Exercise and Leisure Sciences, South Africa;

Physical inactivity is a major contributor to overweight/obesity and associated disorders including cardiovascular diseases (CVDs), diabetes, and insulin resistance (IR). Intensive lifestyle modification (ILM) is recommended as first-line treatment for obese individuals at risk for IR. Exercise is considered to...

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Localised intermittent upwelling intensity has increased along South Africa’s south coast due to El Niño–Southern Oscillation phase state

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MI Duncan --- Department of Ichthyology and Fisheries Science, South Africa NC James --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa AE Bates --- Department of Ocean Sciences, Canada WS Goschen --- Institute for Coastal and Marine Research, Ocean Sciences Campus, South Africa WM Potts --- Department of Ichthyology and Fisheries Science, South Africa

The El Niño–Southern Oscillation (ENSO) phase state is reported to drive interannual variability in sea temperatures along South Africa’s south coast through its influence on wind-induced upwelling processes. Whether ENSO drives the intensity of localised, abrupt, intermittent upwelling is less...

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Patterns of juvenile reef-fish recruitment in Kenya’s shallow fringing- lagoon reefs

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: GM Okemwa --- Kenya Marine and Fisheries Research Institute, Kenya B Kaunda-Arara --- Department of Fisheries and Aquatic Sciences, Kenya EN Kimani --- Kenya Marine and Fisheries Research Institute, Kenya

Studies to understand local-scale patterns in the recruitment of juvenile coral-reef fishes within the western Indian Ocean (WIO) region are few, yet such knowledge is important in fisheries management. Underwater visual census surveys were conducted at five shallow fringing-lagoon reef...

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Comparative trophic ecology of Cape anchovy Engraulis encrasicolus and Natal anchovy Stolephorus holodon off South Africa’s east coast

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: M Horton --- Department of Biological Sciences, South Africa CD van der Lingen --- Department of Biological Sciences, South Africa

The distributional ranges of Cape anchovy Engraulis encrasicolus and Natal anchovy Stolephorus holodon presently overlap at their eastern and western extremes, respectively, off South Africa’s east coast. These species might become more strongly sympatric as a consequence of changed distributions...

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Impacts of a concentrated solar power trough facility on birds and other wildlife in South Africa

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Corey Jeal --- FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, South Africa Vonica Perold --- FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, South Africa Samantha Ralston-Paton --- BirdLife South Africa, South Africa Peter G Ryan --- FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, South Africa

This study assesses bird and wildlife mortality and changes in bird species communities at a 50 MW utility-scale concentrated solar power parabolic trough facility in South Africa. The facility was searched for evidence of large vertebrate mortalities over three months...

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Elevational variation of dung beetle (Coleoptera: Scarabaeidae: Scarabaeinae) communities on Bioko Island, Equatorial Guinea

Item type: Journal Article • Journal: African Zoology • Authors: Christie A Sukhdeo --- Department of Biological Sciences, United States T Keith Philips --- Department of Biology, United States Geraud C Tasse --- Department of Zoology and Animal Physiology, Cameroon Eric B Fokam --- Department of Biology, United States Katy Morgan --- Department of Biological Sciences, United States

Dung beetles are important for the healthy functioning of tropical forest ecosystems, performing essential roles, including nutrient recycling and secondary seed dispersal. Sensitive to changes in both habitat quality and vertebrate diversity, dung beetles are ideal taxa for monitoring ecosystem...

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Behavioural analysis of Village Weavers Ploceus cucullatus in an Ethiopian breeding colony during incubation: 1. Females

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Bobby Habig --- Department of Biology, Queens College, USA Khaleda Khan --- Department of Biology, Queens College, USA David C Lahti --- Department of Biology, Queens College, USA

We used video recordings to perform a behavioural analysis of a Village Weaver Ploceus cucullatus colony in Awash National Park, Ethiopia. We focused specifically on female behaviour during the pair-formation, egg-laying and early-incubation phases of the nesting cycle. A factor...

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Behavioural analysis of Village Weavers Ploceus cucullatus in an Ethiopian breeding colony during early incubation: 2. Males

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Khaleda Khan --- Department of Biology, Queens College, USA Bobby Habig --- Department of Biology, Queens College, USA David C Lahti --- Department of Biology, Queens College, USA

We observed a colony of Village Weavers Ploceus cucullatus in Ethiopia at the height of the breeding season to assess variation and relationships amongst male behaviours. Individuals spent most of their time on behaviours functioning in acquiring and retaining mates,...

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Minimum corporate website disclosure levels and information asymmetry: Evidence from Johannesburg Stock Exchange small-cap companies

Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: George Nel --- School of Accountancy, Stellenbosch University, South Africa Roelof Baard --- School of Accountancy, Stellenbosch University, South Africa

The use of corporate websites as communication medium may contribute to good governance and specifically transparency as one of the basic principles of governance, mitigating the effect of the agency problem. The primary objective of this study was to ascertain...

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Diet of catfish Clarias buthupogon Sauvage, 1879 (Clariidae) in two rivers in the Yoko Reserve, Tshopo Province, Democratic Republic of the Congo

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: RB Mahamba --- Department of Phytotechnics, Democratic Republic of the Congo JN Ndjaki --- Department of Hydrobiology, Democratic Republic of the Congo AB Kankonda --- Department of Hydrobiology, Democratic Republic of the Congo J-C Micha --- Environmental Biology Research Unit (URBE), Belgium

The diet of the catfish, Clarias buthupogon, was studied in two forest rivers in the Yoko Reserve, the Yoko and Biaro Rivers, from September 2008 to August 2009. Gill nets, long lines and traditional traps were used to catch the...

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The influence of species, tree improvement and cultural practices on rotation-end fibre production of Eucalyptus pulpwood plantations in South Africa

Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Jacob Crous --- Sappi Forests, South Africa Giovanni Sale --- Sappi Forests, South Africa Thimagren Naidoo --- Sappi Forests, South Africa

To remain competitive on a global scale it is necessary for forestry companies to increase the yield per hectare and work towards reducing the unit cost of timber. A three-trial series with a 24 factorial design and two replications at...

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Exploring indicators of subjective well-being for first-year university students

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Bianca Botha --- WorkWell Research Unit, Faculty of Economic and Management Sciences, South Africa Karina Mostert --- WorkWell Research Unit, Faculty of Economic and Management Sciences, South Africa Melissa Jacobs --- WorkWell Research Unit, Faculty of Economic and Management Sciences, South Africa

This study aimed to explore indicators of subjective well-being among first-year university students attending a South African university (N = 11; female = 6, black = 6, age range = 19 to 22). Participants shared their experiences of university life by participating in group sessions using the Mmogo...

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Reliability and equity of subject delivery competencies: Perspectives of pre-service teachers

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Alfred Henry Makura --- Faculty of Humanities, South Africa Lukanda Kalobo --- Faculty of Humanities, South Africa

This study examined the reliability and equity of assessors of subject delivery competences as perceived by pre-service teachers. The participants were 310 final year student teachers from a college in Zimbabwe. They responded to a survey on their perceptions of...

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Linking empowering leadership and career calling: The mediating role of psychological need fulfilment

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Leigang Zhang --- School of Teacher Education, China Tingting Jin --- Intensive Care Unit, China

This study investigated whether and how empowering leadership influences employees’ career calling by exploring the mediating role of psychological need fulfilment. Participants comprised a convenience sample of 584 clinical nurses from ten public hospitals in China (female = 85.2%; age...

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New land, old claims and the politics of belonging during a changing agrarian situation in central Zimbabwe

Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Grasian Mkodzongi --- Tropical Africa Land and Natural Resources Research Institute, Zimbabwe

This article examines the way discourses of autochthony and belonging were deployed by various groups of people to make claims over land during the implementation of Zimbabwe’s Fast Track Land Reform Programme (FTLRP) in 2000. Although the FTLRP was not...

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Mental health and individual and organisational outcomes: A latent profile analysis

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Molandri Moller --- Optentia Research Focus Area, South Africa Sebastiaan Rothmann --- Optentia Research Focus Area, South Africa

This study aimed to identify latent mental health profiles for managers in agribusinesses. Additionally, we aimed to investigate how these profiles differed regarding the managers’ job satisfaction, organisational citizenship behaviour, and intention to leave. Managers (N = 507) from agribusinesses...

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Traditional healing and counselling services partnership in multicultural South Africa: A multiple case study

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Petro van der Merwe --- Department of Psychology, South Africa

This study explored partnership opportunities between traditional healing and counselling psychology services in South Africa. Informants comprised a traditional healer and two counselling psychologists who completed interviews on practices in which they engaged and that could be bridged for the...

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Conceptual framework for the evaluation of sugar tax systems

Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: Marese Lombard --- School of Accountancy, Faculty of Economic and Management Sciences, South Africa Alta Koekemoer --- School of Accountancy, Faculty of Economic and Management Sciences, South Africa

The World Health Organization has urged countries to implement a sin tax on items containing high levels of sugar to address the current worldwide obesity epidemic. Consequently, sugar taxes have become increasingly popular. However, many sugar tax systems are implemented...

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A tale of records from Hakskeen Pan, the first record of Pumilibranchipus deserti Hamer and Brendonck, 1995 (Anostraca, Branchiopoda) from South Africa and the pursuit of a new world land speed record

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: E Meyer-Milne --- South African Environmental Observation Network, South Africa MC Mlambo --- Department of Freshwater Invertebrates, Albany Museum, South Africa

Until now, Pumilibranchipus deserti was known from only one locality in Namibia. This paper reports the first record of this species from South Africa in Hakskeen Pan, Northern Cape, which represents a new, easterly range extension of the known distribution...

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Preliminary observations of the reproductive biology of the Frenchman seabream Polysteganus baissaci (Sparidae) from Mauritius

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: L Caussy --- Department of Biosciences and Ocean Studies, Faculty of Science, Mauritius C Appadoo --- Department of Biosciences and Ocean Studies, Faculty of Science, Mauritius WHH Sauer --- Department of Ichthyology and Fisheries Science, South Africa WM Potts --- Department of Ichthyology and Fisheries Science, South Africa

The Frenchman seabream Polysteganus baissaci is an important commercial fish species found on the slopes of the fishing banks of the exclusive economic zone of Mauritius. Exploitation of this species started in 2007, and it is targeted using hydraulic reels...

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Clay and iron oxide contents of prismacutanic B, G, soft plinthic B, and E horizons described during the land type survey of South Africa

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Anizka Stolk --- Department of Soil, Crop and Climate Sciences, South Africa Cornelius W van Huyssteen --- Department of Soil, Crop and Climate Sciences, South Africa

Humans organise their environment, including soils. With soil classification the challenge is to consistently differentiate between soils. This study was therefore initiated to summarise selected properties of the prismacutanic B, G, soft plinthic B, and E horizons, described during the...

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Improving productivity of orange-fleshed sweetpotato (Ipomoea batatas) through intercropping with legumes and moderate phosphorus application

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Eliah Munda --- International Potato Center, Mozambique Petrus J Pieterse --- Department of Agronomy, South Africa Maria I Andrade --- International Potato Center, Mozambique Godwill S Makunde --- International Potato Center, Mozambique Engil I Pereira --- School of Earth, Environmental, and Marine Sciences, USA

Sweetpotato yield is adversely affected by poor soil fertility in Mozambique where access to inorganic fertilisers is lacking. The objective of the study was to evaluate the effectiveness of intercropping sweetpotato with groundnut and soybean at various phosphorus (P) fertilisation...

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Effect of short-term maize–cover crop rotations on weed emergence, biomass and species composition under conservation agriculture

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Joyful T Rugare --- Department of Agronomy, South Africa Petrus J Pieterse --- Department of Agronomy, South Africa Stanford Mabasa --- Department of Crop Science, Zimbabwe

Recent advances in crop production have identified crop rotation with cover crops as a key component of sustainable crop production. However, the implementation of conservation agriculture (CA) systems involving crop rotations in Zimbabwe is still minimal partly due to the...

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Ecology, conservation, and phylogenetic position of the Madagascar Jacana Actophilornis albinucha

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Josephine D’Urban Jackson --- Milner Centre for Evolution, Department of Biology and Biochemistry, United Kingdom Sama Zefania --- Institut d’Enseignement Supérieur de Menabe, Madagascar Sebastien Moehy --- Institut d’Enseignement Supérieur de Menabe, Madagascar Andrew J Bamford --- Wildfowl and Wetlands Trust, United Kingdom Michael W Bruford --- Organisms and Environment Division, School of Biosciences, United Kingdom Tamás Székely --- Milner Centre for Evolution, Department of Biology and Biochemistry, United Kingdom

The Madagascar Jacana Actophilornis albinucha (Jacanidae) is an endemic shorebird found in the threatened wetlands of western Madagascar. This species is presumed to exhibit classical polyandry; however, few data are available to support that assumption. More generally, a lack of...

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The first range-wide assessment of Saddle-billed Stork Ephippiorhynchus senegalensis distribution

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Jonah Gula --- Department of Biology, United States Floyd Weckerly --- Department of Biology, United States KS Gopi Sundar --- International Crane Foundation, United States

The Saddle-billed Stork Ephippiorhynchus senegalensis exemplifies a case in conservation research in which a species is assessed as Least Concern on the IUCN Red List and the resulting consideration of low conservation priority has precluded proper scientific study. As a...

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The impact of supply chain management practices on industry competitiveness: A mixed-methods study on the Zimbabwean petroleum industry

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Happyson Bimha --- Graduate School of Business & Leadership, South Africa Muhammad Hoque --- Graduate School of Business & Leadership, South Africa Elias Munapo --- School of Economics and Decision Sciences, South Africa

Effective supply chain management practices can enhance competitiveness along the supply chain. Fuel supply chain competitiveness requires a reliable flow of product and customer satisfaction. Competitiveness eluded the Zimbabwean petroleum industry over time and so this research looked at the...

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Marital symbols and the marriage satisfaction and spiritual well-being of BaTswana married women

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Victoria B Segami --- Optentia Research Area, South Africa Chrizanne Van Eeden --- Optentia Research Area, South Africa

The study explored marriage satisfaction and spiritual well-being, the association between marital symbols, and the association between marriage satisfaction and spiritual well-being. A convenience sample of BaTswana married women were participants (n = 366; age range = 30–60 years, SD...

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The diet of Malagasy dry forest understory birds based on faecal samples

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Manoa L Faliarivola --- Mention Zoologie et Biodiversité Animale, Domaine Sciences et Technologies, Madagascar Marie J Raherilalao --- Mention Zoologie et Biodiversité Animale, Domaine Sciences et Technologies, Madagascar Aristide Andrianarimisa --- Mention Zoologie et Biodiversité Animale, Domaine Sciences et Technologies, Madagascar Steven M Goodman --- Association Vahatra, Madagascar

This study provides data on the diet of understory birds living in the dry deciduous forests of western Madagascar. Samples were collected at three lowland localities: Ankarafantsika National Park in the northwest, the Kirindy forest (Menabe Antimena Protected Harmonious Landscape)...

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Drought challenges for nature tourism in the Sabi Sands Game Reserve in the eastern region of South Africa

Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Tamzyn Smith --- , South Africa Jennifer M Fitchett --- , South Africa

The Lowveld of South Africa, a savanna biome region economically dominated by nature tourism, has experienced a prolonged dry period beginning in approximately 2015. Despite emerging literature on climate and tourism in southern Africa, the challenges to tourism in the...

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Digitalization strategies for SMEs: A cost vs. skill approach for website development

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Candice Louw --- Department of Business Management, College of Business and Economics, South Africa Cecile Nieuwenhuizen --- Department of Business Management, College of Business and Economics, South Africa

In the age of the digital revolution, websites are a critical component in establishing an online organizational presence. The main aim of this paper is to deliver a model that may provide guidelines, specifically for Small and Medium Enterprises (SMEs),...

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Xenopus laevis as UberXL for nematodes

Item type: Journal Article • Journal: African Zoology • Authors: Anneke L Schoeman --- African Amphibian Conservation Research Group, Unit for Environmental Sciences and Management, South Africa Tracy-Lee Joubert --- African Amphibian Conservation Research Group, Unit for Environmental Sciences and Management, South Africa Louis H du Preez --- African Amphibian Conservation Research Group, Unit for Environmental Sciences and Management, South Africa Roman Svitin --- African Amphibian Conservation Research Group, Unit for Environmental Sciences and Management, South Africa

The effect of invasive species on local parasite dynamics is often overlooked. The African Clawed Frog Xenopus laevis (Daudin, 1802) (Anura: Pipidae) is a global invader, with established populations on four continents and is a domestic exotic in southern Africa...

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A comparison of aquatic macroinvertebrate and large branchiopod community composition between temporary pans of a conservation area and surrounding communal area in South Africa

Item type: Journal Article • Journal: African Zoology • Authors: T Dube --- Animal Ecology, Global Change and Sustainable Development, Belgium L de Necker --- Water Research Group, School for Biological Sciences, South Africa V Wepener --- Water Research Group, School for Biological Sciences, South Africa NJ Smit --- Water Research Group, School for Biological Sciences, South Africa T Pinceel --- Animal Ecology, Global Change and Sustainable Development, Belgium GN Mwaijengo --- Animal Ecology, Global Change and Sustainable Development, Belgium P Lemmens --- Laboratory of Aquatic Ecology, Evolution and Conservation, Belgium L Brendonck --- Animal Ecology, Global Change and Sustainable Development, Belgium

Although temporary wetlands are often biodiversity hotspots that deliver multiple ecosystem services, they are also threatened by human exploitation. We conducted a comparative field study to investigate the impact of reserve protection on the diversity and community structure of aquatic...

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Chondrichthyans as an umbrella species-complex for conserving South African biodiversity

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: GJ Osgood --- Department of Biology, Canada ME McCord --- South African Shark Conservancy (SASC), South Africa JK Baum --- Department of Biology, Canada

Conservation surrogates, such as umbrella and flagship species, could help focus South Africa’s limited resources for research and management and enhance the conservation gains from marine protected areas (MPAs). Sharks, rays and chimaeras (Chondrichthyes), which are charismatic and ecologically diverse,...

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Contrasting patterns in the abundance of fish communities targeted by fishers on two coral reefs in southern Mozambique

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: T Sancelme --- Australian Institute of Marine Science, Indian Ocean Marine Research Centre, Australia J Goetze --- Global FinPrint Project, Australia S Jaquemet --- Université de La Réunion, UMR 9220 ENTROPIE [Tropical Marine Ecology Laboratory], Réunion MG Meekan --- Australian Institute of Marine Science, Indian Ocean Marine Research Centre, Australia A Flam --- Marine Megafauna Foundation, Marine Megafauna Research Center, Mozambique AM Watts --- Marine Megafauna Foundation, Marine Megafauna Research Center, Mozambique CW Speed --- Australian Institute of Marine Science, Indian Ocean Marine Research Centre, Australia

Coastal populations of maritime countries in eastern Africa rely on fish as a primary source of protein, but baseline information on the abundance of fish communities on these coastlines is often lacking. We used baited remote underwater video stations to...

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A review of complementary feeding practices in South Africa

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Nazeeia Sayed --- Department of Animal & Wildlife Sciences, Pretoria, South Africa Hettie C Schönfeldt --- Department of Animal & Wildlife Sciences, Pretoria, South Africa

Introduction: Infant health and nutrition in South Africa are a priority, as evidenced by the political commitment and policy development history of the last 25 years. Current efforts focus on improving breastfeeding rates, but the action plan for complementary feeding...

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Comparing beverage consumption, physical activity and anthropometry among young adult urban- and rural-dwelling African women

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Philippe Jean-Luc Gradidge --- Centre for Exercise Science and Sports Medicine, Faculty of Health Sciences, South Africa Herculina Salome Kruger --- Centre of Excellence for Nutrition, South Africa

Beverage consumption, physical activity, body mass index and waist circumference were compared in age-matched (aged 18–30 years) groups of young South African women from urban (n = 78) and rural (n = 94) settings. Obesity was higher in the rural group, driven by a...

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Corporate tax responsibility in Africa: Insight from Nigeria

Item type: Journal Article • Journal: Africa Journal of Management • Authors: Kenneth Amaeshi --- , United Kingdom Bongo Adi --- , Nigeria Godson Ikiebey --- , Nigeria Neil McCulloch --- , United Kingdom

This study explores how small business owners in Africa talk about their tax responsibility, using Nigeria as a case study. Data were collated through interviews, focus group sessions, and online chats. The study identifies two main types of tax responsibility...

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Consumption of added sugars among undergraduate students at a South African university and its association with BMI

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Ra’eesah Nakhooda --- , South Africa Nicola Wiles --- , South Africa

Objectives: A study was undertaken to quantify added sugar intake; to show the association between added sugar intake and body mass index (BMI); and to identify determinants of added sugar and sugar-sweetened beverage (SSB) intake.

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Mau Mau Author in Detention: The Subversive ‘We’ in a Colonial Era Detention Diary

Item type: Journal Article • Journal: Eastern African Literary and Cultural Studies • Authors: Ken Walibora Waliaula --- , Kenya

In seeking an answer to the question as to why Kenyan author Gakaara wa Wanjau penned Mau Mau Author in Detention, we may consider the fact that he wrote other works as well — before, during, and after his detention...

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Testing a structural model for study demands and resources, study engagement and well-being of first-year university students

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Khumbudzo Luruli --- , South Africa Karina Mostert --- , South Africa Melissa Jacobs --- , South Africa

This study investigated the relationships between study demands, study resources, engagement, and subjective well-being (including social-, emotional- and psychological well-being) for first-year university students. The students (n = 773; females = 65.7%; black = 60.7%; mean age = 20.24, SD...

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Transformational leadership and core self-evaluation: The roles of psychological well-being and supervisor-subordinate guanxi

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: He Ding --- , China Enhai Yu --- , China Yanbin Li --- , China

Core self-evaluation (CSE) is malleable. However, little is known about leadership qualities for facilitating CSE. This study investigated the mediating role of psychological well-being (PWB) on the relationship between transformational leadership and CSE with supervisor-subordinate guanxi (SSG) or non-work social...

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Volunteerism influences on student resilience and gratitude

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Ian I. Llenares --- , Philippines Jay A. Sario --- , Philippines Daisy Bialba --- , Philippines Joey M. Dela Cruz --- , Philippines

We assessed the relative impact of volunteerism on the resilience and gratitude of students based on participation. A convenience sample of 80 students (female = 53.75%; age range = 18-25 years) participated in the study, of which 38 (47.50%) had...

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Exploring the concept of hostmanship through “50 cups of coffee”

Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Monique Medema --- , The Netherlands Brenda de Zwaan --- , The Netherlands

This article explores how hospitality academics and students understand, interpret and experience hostmanship. Building on a literature review which outlines and discusses the development and definition of hospitality, this exploratory study is framed by an interpretivist approach. Semi-structured interviews were...

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Effects of untreated industrial effluents on water quality and benthic macroinvertebrate assemblages of Lake Hawassa and its tributaries, Southern Ethiopia

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: ST Mereta --- , Ethiopia A Ambelu --- , Ethiopia A Ermias --- , Ethiopia Y Abdie --- , Ethiopia M Moges --- , Ethiopia A Haddis --- , Ethiopia D Hailu --- , Ethiopia H Beyene --- , Ethiopia B Kebede --- , Ethiopia WL Mulat --- , United States

The present study investigates the impacts of industrial effluents on the macroinvertebrate assemblages and water quality of the Lake Hawassa watershed. The water quality and macroinvertebrate assemblages were assessed at 40 sampling sites. The chemical and ecological water quality was...

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Spatial variability of aquatic macroinvertebrate assemblages in the Okavango Delta, Botswana: considerations for developing a rapid bioassessment tool

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: H Dallas --- , South Africa B Mosepele --- , Botswana

Spatial variability in macroinvertebrate assemblages of the Okavango Delta, Botswana, was examined to evaluate differences in assemblages at a regional and habitat scale. Sampling was undertaken six times during a one-year cycle from 2005 to 2006, with 228 macroinvertebrates samples...

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Growth and metabolism of Clarias gariepinus (Burchell, 1822) fed with copepods (Eucyclops sp.) exposed to lead and titanium dioxide nanoparticles

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: MM Matouke --- , Nigeria MK Mustapha --- , Nigeria

The increasing uses of lead (Pb2+) and titanium dioxide nanoparticles (nTiO2) in commercial products have led totheir increased discharge into aquatic environments. This study investigated the effects of the interaction betweennTiO2 and lead (Pb2+) in a simple freshwater food web...

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Status and population structures of three anthelmintic tree species along climatic gradient in Benin and the implications for conservation

Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Géorcelin G Alowanou --- , Bénin Thierry D Houéhanou --- , Bénin Sylvanus Mensah --- , Bénin Bénoit K Alissou --- , Bénin Carlos C Ahoyo --- , Bénin Rauldin S Akpako --- , Bénin Faroukou Wabi --- , Bénin Marcel RB Houinato --- , Bénin Sylvie M Hounzangbé-Adoté --- , Bénin

Smallholder farmers make intensive use of anthelmintic plant species in the traditional treatment of animal parasitic infections. As a result, populations of these plant species are exposed to increased disturbances such as plant harvesting, threatening their stability. Information on population...

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Restorative followership in Africa: Antecedents, moderators, and consequences

Item type: Journal Article • Journal: Africa Journal of Management • Authors: Baniyelme D. Zoogah --- Williams College of Business, Xavier University, USA James B. Abugre --- University of Ghana Business School, University of Ghana, Ghana

In this paper, we report on three studies that examine one perspective of strategic followership: restorative followership. It centers on the restorative behavior of followers in bad leadership contexts. In Study 1, we leverage insight from restorative behavior theory to...

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Companionate leadership: A shemswian perspective

Item type: Journal Article • Journal: Africa Journal of Management • Authors: Baniyelme D. Zoogah --- Department of Management and Entrepreneurship, Williams College of Business, Xavier University, USA

Given the calls for theories and models of leadership unique to Africa, I leverage insight from African historical, anthropological, and philosophical accounts to propose one type of indigenous leadership: companionate leadership. It is based on ancient (Kemetic scribes of the...

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Variation in colony sizes of weavers from a citizen science project

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Hans-Dieter Oschadleus --- , South Africa

The project PHOWN (PHOtos of Weaver Nests) is a citizen science project that collects breeding distributions and colony sizes of weaverbirds (Ploceidae) globally. PHOWN began in mid-2010 and has collected nearly 30 000 records in 9.5 years. This paper provides...

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Effect of added organic substrates on reduction in a soil from the Maputaland Coastal Plain

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Brenton Mabuza --- , South Africa Cornelius Wilhelm van Huyssteen --- , South Africa

Wetland soils of the Maputaland Coastal Plain do not exhibit the redox morphology typically associated with extended periods of water saturation. The aim of this paper was to determine if the addition of various organic substrates (buffalo grass, peat, sucrose)...

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Efficacy and profitability of weed management systems for honeybush in South Africa

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Rayganah Rhoda --- , South Africa Cecilia Bester --- , South Africa Mlamuli Motsa --- , Eswatini Marlise Joubert --- , South Africa Gugu Tshabalala --- , South Africa Candice-Lee Lyons --- , South Africa

Weeds reduce crop productivity through competion for nutrients, water, light and space, and impact negatively on commercial crops. Honeybush tea (Cyclopia spp.) is an industry mainly focused on the organic cultivation of tea, using mechanical weeding control methods. To date,...

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All washed up: spatial and temporal variation in the wash-up and fate of chondrichthyan egg cases along a section of the Garden Route, South Africa

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: S Schmöle --- , The Netherlands M Brown --- , South Africa M Witteveen --- , South Africa

Washed-up chondrichthyan egg cases were collected along three different sandy beaches around Plettenberg Bay, South Africa, between April 2016 and March 2017. GPS location was recorded upon collection, and, after being soaked in fresh water for 12 hours, egg cases...

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Ecosystem service values of sediment generation and entrapment by marginal coral reefs at Sodwana Bay, South Africa

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: SCS Laing --- , South Africa MH Schleyer --- , South Africa JK Turpie --- , South Africa

Coral reefs provide a multitude of goods and services, some of which are difficult to value due to their intangible nature and the absence of markets to ascribe their relative worth. The coral reefs of Sodwana Bay on the northeast...

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Natural hair chronicles of black female vloggers: Influences on their psychological well-being

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Liezille Jacobs --- , South Africa Anelisa Kelemi --- , South Africa

This study explored how hair texture chronicles in a post-colonial country is influenced by psychological well-being and a sense of self in women. Our informants were 10 female, black, South African YouTube vloggers, with Afro-textured, frizzy, natural hair. The participants...

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$Comparison of soil phosphorus fractions after 37 years of wheat production under different management practices in a semi-arid climate$

Comparison of soil phosphorus fractions after 37 years of wheat production under different management practices in a semi-arid climate

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: K Ncoyi --- , South Africa CC du Preez --- , South Africa E Kotzé --- , South Africa

Crop residue management is important for enhancing soil fertility and productivity which leads to an increase in crop yields. A long-term trial, situated near Bethlehem in the Eastern Free State in South Africa, was established to determine the influence of...

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Germinable weed seed-bank response to plant residue application and hand weeding under two contrasting tillage systems in a granite-derived clay loam soil in Zimbabwe

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Nilton Mashavakure --- , Zimbabwe Arnold B. Mashingaidze --- , Zimbabwe Robert Musundire --- , Zimbabwe Edson Gandiwa --- , Zimbabwe Ezekia Svotwa --- , Zimbabwe

High levels of weed infestation are among the major reasons for the limited adoption of conservation agriculture techniques by farmers in sub-Saharan Africa. This study investigated the effects of plant residue application (zero: NR, low: LR, medium: MR and high:...

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Restricted breeding habitat of the Critically Endangered White-winged Flufftail in Ethiopia and its conservation implications

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: RB Colyn --- , South Africa MA Howes-Whitecross --- , South Africa C Howes --- , South Africa HA Smit-Robinson --- , South Africa

The White-winged Flufftail Sarothrura ayresi is considered the most threatened rallid species in Africa and has significant data deficiencies related to population dynamics, ecology and conservation priorities. The Ethiopian Highlands have until recently, been the only known breeding area for...

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Challenges in nest monitoring of White-winged Flufftails Sarothrura ayersi in Ethiopia

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Melissa A Howes-Whitecross --- , South Africa Caroline Howes --- , South Africa Robin B Colyn --- , South Africa Hanneline A Smit-Robinson --- , South Africa

The Critically Endangered White-winged Flufftail Sarothrura ayresi is only known to breed in the high-altitude wetlands of Ethiopia and South Africa. Several studies have documented the physical properties of nests in the well-known Berga wetland, Ethiopia; however, behavioural accounts of...

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Exploring information and communication technology among rural dwellers in sub-Saharan African communities

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Naeem Atanda Balogun --- , Nigeria Fabian Aiterebhe Ehikhamenor --- , Nigeria Omenogo Veronica Mejabi --- , Nigeria Rafiat Ajibade Oyekunle --- , Nigeria Olayiwola Wasiu Bello --- , Nigeria Oluyinka Titilope Afolayan --- , Nigeria

The study used survey design and collected data using a questionnaire. Stratified random sampling was employed to identify 12 rural communities evenly spread across the three senatorial districts of Kwara State, Nigeria. From each community, 125 respondents were purposively sampled,...

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Feeding and spatial behaviours of transhumant cattle in southern Benin: implications for the sustainable management of rangelands

Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Rodrigue V Cao Diogo --- , Benin Josias Steve Adjassin --- , Benin Luc Hippolyte Dossa --- , Benin Ibrahim Alkoiret Traoré --- , Benin

Feed intake on pastures plays a vital role in cattle rearing in West Africa. However, the scarcity of pastures during the dry season may result in changing grazing behaviour by cattle. Therefore, we studied the management practices of transhumant herders...

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What grass characteristics drive large herbivore feeding patch selection? A case study from a South African grassland protected area

Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Elena Mariotti --- , South Africa Francesca Parrini --- , South Africa Cornelius J Louw --- , South Africa Jason P Marshal --- , South Africa

The coexistence of a large herbivore community depends on the degree of overlap in the resource used by the different species composing it. We investigated the role of grass greenness, height, biomass and feeding patch status on feeding patch selection...

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Water hyacinth (Eichhornia crassipes) affects the composition and abundance of zooplankton in the littoral region of Koka Reservoir, Ethiopia

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: H Getnet --- , Ethiopia D Kifle --- , Ethiopia T Fetahi --- , Ethiopia

Water hyacinth, Eichhornia crassipes (Martius) Solms 1883, is a rampant invasive aquatic plant that is recognised as one of the ten worst weeds in the world. Its appearance in Koka Reservoir was reported in 1965 and since then it has...

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Perspectives of healthcare workers on factors influencing diabetes management and diabetic foot problems in Zimbabwe

Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: Oppah Kuguyo --- , Zimbabwe Chengeto Muhaso --- , Zimbabwe Simbarashe Nyandoro --- , Zimbabwe Joconiah Chirenda --- , Zimbabwe Vasco Chikwasha --- , Zimbabwe Akimu C Mageza --- , Zimbabwe Lovemore Gwanzura --- , Zimbabwe Doreen Macherera Mukona --- , Zimbabwe Alice Matimba --- , Zimbabwe

Background: Poor management of diabetes mellitus gives rise to complications such as diabetic foot (DF), which pose a host of medical and socioeconomic problems, especially in low-income countries where resources, capacity and awareness are limited.

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A South African exploration into outdoor adventure education and adolescent psychosocial development

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Judith Blaine --- , South Africa Jacqui Akhurst --- , South Africa

This study explored the psychosocial outcomes of an outdoor adventure program for adolescents. A purposive sample of 144 Grade 10 learners participated in the Journey outdoor adventure education (OAE) programme (female = 48.6%, black = 27.5%; mean age =16.5 years;...

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Negative centralisation of HIV/AIDS trauma and health-related quality of life: do post-traumatic stress symptoms explain the link?

Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Desmond Uchechukwu Onu --- , Nigeria Steven Kator Iorfa --- , Nigeria Dorothy I Ugwu --- , Nigeria

Over-integration of HIV-related trauma into the client’s memory in a negative emotional valence could be a serious health debilitating process which may result in negative post-traumatic health outcomes, affecting health-related quality of life (HRQoL) of people living with HIV (PLWH)...

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Differences in soil microbial communities and enzyme activity due to the application of bioslurry under cultivation

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Motiki M Mofokeng --- , South Africa Johan Habig --- , South Africa Stephen O. Amoo --- , South Africa Christian P du Plooy --- , South Africa Phatu W Mashela --- , South Africa Mokhele E Moeletsi --- , South Africa Sonja Venter --- , South Africa Hintsa T Araya --- , South Africa

Soil micro-organisms influence soil ecosystem processes and properties. Their influence can be modified by cultivation practices, which affect their interaction with cultivated plants as well as soil physical and chemical properties. The study investigated differences in soil microbial activities between...

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Morpho-agronomical characterisation of local and international sweetpotato germplasm from the South African collection

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Sonia IM Naidoo --- , South Africa Sunette M Laurie --- , South Africa Hussein Shimelis --- , South Africa Mark D Laing --- , South Africa

Considerable genetic diversity is present amongst the sweet potato (Ipomoea batatas (L.) Lam.) accessions that can be selected for breeding. The Agricultural Research Council of South Africa maintains 360 sweetpotato accessions that were bred locally, and introductions from various regions...

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The construction of “normative Zimbabweanness” through demonisation of rage, anger and emotion in select press coverage of the #ZimShutDown protests

Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Kudzaiishe P. Vanyoro --- , South Africa

Hashtagged #ZimShutDown on Twitter, protests erupted in Zimbabwe in January 2019 in response to a widespread national economic crisis and a drastic fuel price hike. This paper shows how the protesters’ use of citizen rage, anger and emotion was criminalised,...

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Application of metaheuristic algorithms in DC-optimal power flow

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Oluwafemi Ajayi --- , South Africa Nnamdi Nwulu --- , South Africa Uyikumhe Damisa --- , South Africa

This paper presents the application of two metaheuristic algorithms (Exchange Market Algorithm and Ant Lion Optimizer) in solving the DC optimal power flow problem. The objective of this study is to minimize fuel costs associated with electricity generation. Advanced Interactive...

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Purpose of Crested Francolin Ortygornis sephaena male collective calls at dusk based on livestream audio censusing

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Johann H van Niekerk --- , South Africa Giovanni Forcina --- , Portugal

The study of diel and seasonal variation in vocal interactions of Crested Francolin Ortygornis sephaena territorial males helps clarify its purpose, thus delivering insights into the behavioural ecology of this species. The goals of the present paper are to describe...

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Does a paternalistic leader facilitate voice and creative performance? Evidence from Ghana

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Lu Chen --- , China William Ansah Appienti --- , China

Drawing upon the conservation of resource theory and leadership contingency model, this study investigated how and when employee voice under three paternalistic leadership dimensions of benevolence, morality, and authoritarianism relates to creativity. The sample included matched survey responses obtained from...

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Brand loyalty and the Bangtan Sonyeondan (BTS) Korean dance: Global viewers’ perceptions

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Hae-won Lee --- , South Korea Joon-ho Kim --- , South Korea

This study examined the influence of brand trust and loyalty to Korean Bangtan Sonyeondan (BTS), as perceived by global viewers who watched a BTS dance performance on TV and online. The sample consisted of 498 respondents (women = 44. 7%),...

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Burnout and ill-wellbeing of talented professional nurses: The moderating role of dispositional employability

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Nicolene Barkhuizen --- , South Africa Alex Molefi --- , South Africa

We investigated the moderating role of dispositional employability on the relationship between work burnout and ill-wellbeing of professional nurses. Our sample consisted of 433 professional nurses (female = 88.2%; black = 96.5%) from the North-West Province, South Africa. The nurses...

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Pheromones as management tools for non-Scolytinae Curculionidae: development and implementation considerations

Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Luki-Marie Scheepers --- , South Africa Jeremy D Allison --- , Canada Marc C Bouwer --- , South Africa Egmont R Rohwer --- , South Africa Bernard Slippers --- , South Africa

For the large family Curculionidae, the number of species considered pests is expected to increase due to global movement of plant and soil material, as well as climate change. Pheromones are increasingly popular for use in pest management programmes, either...

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Composition, structure and diversity of fish assemblages across seascape types at Príncipe, an understudied tropical island in the Gulf of Guinea (eastern Atlantic Ocean)

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: F Otero-Ferrer --- , Canary Islands F Tuya --- , Canary Islands NE Bosch Guerra --- , Australia A Herrero-Barrencua --- , Canary Islands AD Abreu --- , R Haroun --- , Canary Islands

Coastal seascapes are often composed of a mosaic of interconnected habitats. Transitions between adjacent habitats are of special relevance to the ecology of many reef-associated organisms. In this study, we tested (i) whether the degree of similarity in the composition...

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Effects of nest management methods on hatching success and predation rates of hawksbill turtles on Cousine Island, Seychelles

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: J Gane --- , South Africa CT Downs --- , South Africa I Olivier --- , South Africa M Brown --- , South Africa

Sea turtle populations have declined globally and are of conservation concern. We investigated the effects of nest management methods on hatching success and egg/hatchling predation rates of hawksbill turtles Eretmochelys imbricata on Cousine Island, Seychelles. We determined the effectiveness of...

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Towed passive acoustic monitoring complements visual survey methods for Heaviside’s dolphins Cephalorhynchus heavisidii in the Namibian Islands Marine Protected Area

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: T Gridley --- , South Africa MJ Martin --- , South Africa J Slater --- , South Africa J-P Roux --- , Namibia RJ Swift --- , United Kingdom SH Elwen --- , South Africa

The genus Cephalorhynchus contains four dolphin species, of which three are classified as Near Threatened or Endangered and one subspecies is close to extinction. Understanding the species’ abundance, distributions and habitat preferences is necessary for effective management to prevent further...

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Beef cuts amongst the Bangwaketse: the case of motlhakanelwa

Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Thapelo Otlogetswe --- , Botswana

The Setswana wedding is characterised by ritual intensity. Whilst some rituals are changing rapidly, one particular event that has remained relevant is the handling and sharing of the motlhakanelwa beast. Kgomo ya motlhakanelwa, the beast that is shared, is one...

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Evaluation of phytoremediation effects of chicken manure, urea and lemongrass on remediating a lead contaminated soil in Kabwe, Zambia

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Yui Yoshii --- , Japan Isabell von Rein --- , USA Kabenuka Munthali --- , Zambia Mukuka Mwansa --- , Zambia Hokuto Nakata --- , Japan Shota Nakayama --- , Japan Mayumi Ishizuka --- , Japan Yoshitaka Uchida --- , Japan

High levels of lead (Pb) in the soil is a serious issue in the city of Kabwe, Zambia. Phytoremediation is an effective approach to revive the life-supporting functions of the soils. Locally available soil amendments, such as chicken manure, can...

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A characterisation of wetland soil types on the Maputaland Coastal Plain

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: ML Pretorius --- , CW van Huyssteen --- , LR Brown --- , AT Grundling --- , CT Downs --- ,

This paper addresses the shortage of wetland soil data on the Maputaland Coastal Plain. It does so by investigating the relationship between wetland types, slope position and soil properties. Four wetland types (a valley-bottom system, perched pans, hygrophilous grasslands and...

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Physical properties of Tectona grandis (Lamiaceae) juvenile wood thermally modified in a closed system

Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Natália A Cunha --- , Brazil Tiago A Gales --- , Brazil Amanda M Nunes --- , Brazil Glaucileide Ferreira --- , Brazil Thaís M Brito --- , Brazil Adriano Ribeiro de Mendonça --- , Brazil Djeison C Batista --- , Brazil

This paper reports the first results of the effect of an industrial closed-system thermal modification process on the physical properties of fast-growth teak wood (Tectona grandis L.f.). The wood (juvenile) came from thinning a 15–18-year-old plantation located in Mato Grosso...

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Current status of technology-use for plantation re-establishment in South Africa

Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Muedanyi M Ramantswana --- , South Africa Michal P Brink --- , South Africa Keith M Little --- , South Africa Raffaele Spinelli --- , Italy Paxie WC Chirwa --- , South Africa

Plantation re-establishment is a key component of silviculture as it deals with the creation of a suitable environment when planting or seeding a stand. Re-establishment practices include slash management, site preparation, marking and preparation of a planting position, planting, fertilisation...

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Project planning and control analysis for suburban photovoltaic alternative electric power supply in Southwestern Nigeria

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Ibikunle Olalekan Ogundari --- , Nigeria Funso Ayotunde Otuyemi --- , UK

Alternative photovoltaic (PV) electric power systems are designed for suburban residential complexes in Nigeria’s Southwestern region as succour to erratic grid power supply. The initial project in suburban Ibadan, Oyo State was analyzed as model for other stakeholders in the...

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Temporal effects of biocontrol processes on nutrient dynamics in a shallow lake: Case study of Lake Xini, Okavango Delta in Botswana

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: CN Kurugundla --- , Botswana JC Buru --- , Australia

Little is known about the effects of weeds on nutrient concentration changes in aquatic environments. We examined alterations to nutrient dynamics from the biocontrol process of Salvinia molesta by the weevil Cyrtobagous salviniae in the Lake Xini of Okavango, Botswana...

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An assessment of the ecological condition of a wetland on the Lions River floodplain based on soil and vegetation parameters, South Africa

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: H Ndlovu --- , South Africa DC Kotze --- , South Africa GPW Jewitt --- , South Africa CD Morris --- , South Africa

Wetlands are increasingly exposed to human activities, resulting in degradation. As the wetland degrades, it loses functionality. In South Africa, wetlands can play an important water-regulating role. This study aims to establish the ecological condition of a historically utilised wetland...

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Assessing wetland functionality using soil surface indicators in Letšeng- la-Letsie wetland in Quthing District, Lesotho

Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Nthuseng Kahlolo --- , Lesotho Botle Mapeshoane --- , Lesotho Peter Chatanga --- , Lesotho Lerato Seleteng-Kose --- , Lesotho Makoala V Marake --- , Lesotho

Wetlands are globally valuable ecosystems as they provide many important services to the human society, yet the ecology of some of them is yet to be understood. This study assessed the functionality of Letšeng-la-Letsie wetland in Lesotho, using the Landscape...

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Gendered actual controlling shareholders and family business emotional attachment influences on business operational violations: A propensity score matching analysis

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Xiaoyu Liao --- , China Bei Lyu --- , China Jiayu Fan --- , China

This study aimed to ascertain how gendered family emotional attachment of actual controlling shareholders influenced business violation and its boundary functions. Our study participants were 1 707 actual controlling shareholders of Chinese listed family companies. For the data analysis, we...

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Prevalence and associated factors of weapon carrying among university students from 25 countries

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Supa Pengpid --- , Thailand Karl Peltzer --- , South Africa

The study aimed to assess the prevalence and associated factors of recent weapon carrying among university students from 25 countries. Using a cross-sectional study design, 18 433 university students (median age = 20 years) 25 countries in Africa, the Americas,...

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If the equal weighted portfolio is so great, why isn’t it working in South Africa?

Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Byran H Taljaard --- , South Africa Eben Maré --- , South Africa

This paper considers the recent underperformance of the equal weighted portfolio of South African Top 40 stocks relative to the market capitalisation weighted portfolio. It highlights the impact of the increased concentration of market capitalisation weights in the Top 40,...

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Are spas and wellness still considered luxurious in today’s world?

Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Sophie Thorne --- ,

The world of spas has been around for thousands of years. Built as a supplementary service or facility for luxury hotels, it has quickly become a must have for most if not all luxury hotels around the world. Difficulties may...

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Technico-economic comparison of heat transfer fluids or thermal energy storage materials: A case study using Jatropha curcas oil

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Kokouvi Edem N’Tsoukpoe --- , Burkina Faso Nolwenn Le Pierrès --- , France Yao Manu Seshie --- , Burkina Faso Yézouma Coulibaly --- , Burkina Faso

Thermal oils are omnipresent in processes using heat at high temperature as heat transfer fluids (HTFs) as well as thermal storage materials (TESMs), particularly in concentrating solar plants. In this study, a methodology for technico-economic comparison of HTF and TESM...

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Potential impact of marine heatwaves on selected phytoplankton adapted to the Gulf of Guinea during stable hydrographic periods

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: E Acheampong --- , Ghana P Mantey --- , Ghana A Weremfo --- , Ghana

Reports suggest that the Gulf of Guinea (northeastern tropical Atlantic) frequently experiences marine heatwaves (MHW)—prolonged periods of anomalously warm seawater—of ≥1.5 °C above baseline. We assessed the likely impact of this anomaly on two microalgae, Thalassiosira weissflogii (diatom) and Gymnodinium...

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Cross-shelf movement of Chrysaora fulgida (Scyphozoa; Discomedusae) off Namibia inferred from stable isotopes (δ¹⁵N and δ¹³C)

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: H Skrypzeck --- , South Africa CD van der Lingen --- , South Africa MJ Gibbons --- , South Africa

Large and small specimens of two species of metagenic Scyphozoa (true jellyfishes) can be found in nearshore waters off central Namibia throughout the year. Whereas populations of Chrysaora africana are largely restricted to inshore waters, C. fulgida occurs across the...

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Large-scale movements and site fidelity of two bull sharks Carcharhinus leucas estimated from a double-tagging experiment at Réunion Island (southwest Indian Ocean)

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: M Soria --- , France Y Tremblay --- , France A Blaison --- , France F Forget --- , France E Crochelet --- , Réunion L Dagorn --- , France

Since 2011, the mean number of bites per year by bull sharks Carcharhinus leucas has increased markedly at Réunion Island. To predict areas and periods of increased risk, we need to better understand the space-use dynamics of individual sharks. In...

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Job insecurity and psychological well-being: The moderating roles of self-perceived employability and core self-evaluations

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Fabian O. Ugwu --- , Nigeria Victor C. Nwaosumba --- , Nigeria Emmanuella U. Anozie --- , Nigeria Chioma K. Ozurumba --- , Nigeria Chisom E. Ogbonnaya --- , Nigeria Francis A. Akwara --- , Nigeria Chinelo H. Ogwuche --- , Nigeria Okechukwu E. Ibiam --- , Nigeria

This study examined the relationship between job insecurity and psychological well-being of bank sector employees and the role of core self-evaluations and self-perceived employability in that relationship. Employing a two-wave panel design, we surveyed 259 casual employees of commercial banks...

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Liminality in incorporation: regularisation of undocumented Zimbabweans in South Africa

Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Shingirai Nyakabawu --- , South Africa

Since 2000, large numbers of undocumented Zimbabweans have settled in South Africa in search of better living opportunities. In 2010, the South African government approved an immigration amnesty known as the Dispensation Zimbabwe Permit (DZP). This article argues that DZP...

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The role of “food” in network formation and the social integration of undocumented Zimbabwean migrant farmworkers in the Blouberg-Molemole area of Limpopo, South Africa

Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Denboy Kudejira --- , Canada

This article examines the role of food in mediating social relations between undocumented Zimbabwean migrant farmworkers and other Zimbabweans living and working in the Blouberg and Molemole local municipalities in Limpopo province, South Africa. Based on ethnographic research, the article...

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Correlates of persistent electrocution-related mortality of raptors in Guelmim-Oued Noun province, Morocco

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Ali Irizi --- , Morocco Mohamed Aourir --- , Morocco Mohamed Aziz El Agbani --- , Morocco Abdeljebbar Qninba --- , Morocco

Electrocution on poorly designed power pylons is one the most important human-related causes of large bird mortality worldwide. Raptor mortality caused by 22 kV distribution power lines was studied in south-west Morocco. We surveyed 323 pylons (53.5 km) and collected...

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Double-brooding in Southern Yellow-billed Hornbills Tockus leucomelas

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Mark Stanback --- , United States David Millican --- , United States William Versfeld --- , Namibia Matti Nghikembua --- , Namibia Laurie Marker --- , Namibia John Mendelsohn --- , Namibia

Double-brooding is an avian breeding strategy where birds produce at least two successful nests in a single season. Double-brooding is seen most frequently in small passerines for which the breeding season is lengthy enough that they can easily fit in...

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Social media among distant spouses in South Western Nigeria

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Olayinka Akanle --- , South Africa God’sgift Chinenye Nwanagu --- , Nigeria Olufunmilola Esther Akanle --- , Nigeria

Industrialization and modernization have heighten in Africa and this has implications for marriages and family because they make spouses traverse the socio-technological spaces of the twenty-first century and beyond. Social media plays crucial, complicated and strategic roles yet these are...

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Wind and solar power deployment in India: Economic aspects and policy implications

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Alok Das --- , India Hardik K. Jani --- , India Garlapati Nagababu --- , India Surendra Singh Kachhwaha --- , India

Economic assets play a key role in the growth of renewable power projects and depend on financial scenarios and policy structures offered by government policies. The focus of the study is to assess the impact of the existing economic scenarios...

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BMI-based figure rating scale (FRS) as an adjunctive aid in nutritional screening and assessment in a resource-limited setting

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: E van Tonder --- , South Africa N Dihawa --- , South Africa

Objectives: Many existing malnutrition screening and diagnostic tools require body mass index (BMI) and quantification of weight change to detect malnutrition or risk thereof. This is often a challenge in South African public hospitals due to missing data, including patient...

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Grit and its relation to well-being among first-year South African university students

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Henry D. Mason --- , South Africa

This mixed methods study explored grit and well-being among South African first-year university students (N = 405, female = 57.10%; mean age = 20.59, SD = 1.65 years). The students self-reported their grit and well-being. A small subsample of the...

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Perceived information communication and technology (ICT) demands and psychological well-being among Gabon civil servants: The moderating role of social support and organisational support

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Joseph Medzo-M’engone --- , France

This study examined the role of social and organisationnal support in the relationship between emloyee perceptions of information communication and technology (ICT) demands and psychological well-being. Civil service employees (N = 162) in a large public institution in Gabon were...

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Psychological well-being program efficacy on meaning-in-life in a sample of University of Jeddah students

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Ferial M. Alhaj-Mahmoud --- , Saudi Arabia Somia A. Ahmad --- , Saudi Arabia

This study investigated the efficacy of a theory-based psychological well-being program on meaning-in-life of Arabic students. Using a pre-post-test design, we assigned 68 of 136 students to the intervention and another 68 students to the control condition. The intervention ran...

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Emotional labour influences on psychological health: The moderating role of religiosity

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Collins Badu Agyemang --- , Ghana

The present study examined the direct association between emotional labour and psychological health, and the moderating role of religiosity among media practitioners in Ghana. Using a cross-sectional design, 336 media practitioners (female = 31%) completed a survey on emotional labour...

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College students’ well-being during the COVID-19 pandemic: An exploratory study

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Irma Eloff --- , South Africa

This study explored college student’s well-being priorities and capabilities during the COVID-19 pandemic. A total of 2 213 South African undergraduate students answered an open-ended question to elicit interpretive, reflective, analytic, and evaluative written response types on the factors that...

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When cooling is worse than warming: investigations into the thermal tolerance of an endemic reef fish, Boopsoidea inornata

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: C Allison --- , South Africa C Muller --- , South Africa A-R Childs --- , South Africa W Froneman --- , South Africa LA Bailey --- , South Africa WM Potts --- , South Africa

Recent investigations suggest that global warming is likely to alter temperature regimes along the southeastern coastline of South Africa through the increased frequency of upwelling events. Identifying thermal thresholds is fundamental in predicting the response of marine ectotherms to rapidly...

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Life in a child-headed household: Exploring the quality of life of orphans living in child-headed households in Zimbabwe

Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Kudzai Emma Chademana --- , South Africa Brian van Wyk --- , South Africa

The overwhelming rate of HIV-related mortality in the past decades has eroded traditional safety nets for orphans, of which the extended family is the most critical. This has led to the formation of new household structures, i.e. child- and youth-headed...

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Demographic variables as drivers of innovation in small accommodation businesses: A case of South Africa and Zimbabwe

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Lovemore Tendai Chipunza --- , South Africa Matsidiso Nehemia Naong --- , South Africa

Most of the evidence that has been documented on the impact of demographic factors on innovation has primarily focused on large businesses, and there has been little focus on small businesses. The literature continues to confirm that innovation is a...

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An exploratory study into the establishment of agricultural innovation platforms to improve agricultural efficiency in Hwedza district, Zimbabwe

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Innocent T. Mahiya --- , South Africa

Africa has suffered a series of challenges around food insecurities which are partly explained by inefficient agricultural systems. The agricultural innovation platforms have been popularized in Africa and Zimbabwe in particular as part of the answer to the many agricultural...

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Math function-based controller combined with PI and PID applied to ultracapacitor based solar-powered electric vehicle

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Raghavaiah Katuri --- , India Srinivasarao Gorantla --- , India

In the view of environmental concerns, the usage of electric vehicles (EVs) has increased more drastically than internal combustion (IC) engine-based vehicles. To diminish the load on the battery at peak power requirement, Hybrid Energy Storage System (HESS) was made...

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Influence of soil organic carbon, fertiliser management, and weeding regime on weed dynamics and maize productivity on sandy soils in eastern Zimbabwe

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Justin Chipomho --- , Zimbabwe Cosmas Parwada --- , Zimbabwe Joyful T Rugare --- , Zimbabwe Stanford Mabasa --- , Zimbabwe Regis Chikowo --- , Zimbabwe Arnold B Mashingaidze --- , Zimbabwe

Labour bottlenecks and multiple operations at the start of a cropping season often result in inadequate early weed control and subsequent poor crop performance. Therefore, there is a need to establish management practices that provide the best opportunities for the...

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First report of glyphosate and paraquat resistance in two Plantago biotypes

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Vhuthu Ndou --- , South Africa Frederick Eksteen --- , Ethel Phiri --- , South Africa Petrus J Pieterse --- , South Africa

Resistance to glyphosate in plantago (Plantago lanceolata L.), a serious weed in South Africa, was confirmed in 2003. More recently, a plantago biotype that is putatively resistant to both glyphosate and paraquat was reported. Seeds from a putatively susceptible (S)...

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Loneliness and psychological well-being among the elderly in Buffalo City, South Africa

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Anathi Ntozini --- , South Africa Ali Arazeem Abdullahi --- , Nigeria

This study examined the correlation between loneliness and four dimensions of psychological well-being (PWB) of old people in South Africa as they vary by their socio-demographic characteristics. Respondents were a non-probability/random sample of 301 elderly in Buffalo City, South Africa...

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Training and support relationship influences on volunteers’ public advocacy behaviours: Their mediation by psychological empowerment

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Meng Chenli --- , China Eugene Abrokwah --- , China

This study examined how psychological empowerment mediation of training and support relationship influences volunteer public advocacy behaviours. Survey participants were 300 volunteers at community health volunteer organisations (CHVOs) in Shanghai, China (female = 36.94%; mean age = 28.89 years, SD...

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Popular culture influences on national image and tourism behavioural intention: An exploratory study

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Joon-ho Kim --- , Republic of Korea Myung-hun Jung --- , Republic of Korea Hyun-ju Choi --- , Republic of Korea

This study aimed to examine the relationships between popular culture (success factors of K-pop) and international tourist behavioural intention, and the role of national image in that relationship. We analysed an existing data base on popular culture success attributes of...

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‘A Fiction to Mock the Cuckold’: Reinvigorating the Cliché Figure of the Cuckold in Abdulrazak Gurnah’s By the Sea (2001) and Gravel Heart (2017)

Item type: Journal Article • Journal: Eastern African Literary and Cultural Studies • Authors: Sean James Bosman --- , South Africa

This article argues that Abdulrazak Gurnah reinvigorates the cliché figure of the cuckold into a complex narrative device. His cuckolds serve as nexuses through which he expresses some of his authorial concerns in By the Sea (2001) and Gravel Heart...

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Probiotic effect and dietary correlations on faecal microbiota profiles in irritable bowel syndrome

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Cheryl Stevenson --- , South Africa Renée Blaauw --- , South Africa Ernst Fredericks --- , South Africa Janicke Visser --- , South Africa Saartjie Roux --- , South Africa

Objective: Probiotics and nutrient intakes modulate gastrointestinal (GIT) microbiota and symptoms of irritable bowel syndrome (IBS). The extent to which these factors influence the microbiota is relatively unknown. The primary objective of this paper was to investigate the effect of...

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Prevalence of overweight and obesity among selected schoolchildren and adolescents in Cofimvaba, South Africa

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Olufunmilola Otitoola --- , Nigeria Wilna Oldewage-Theron --- , South Africa Abdul Egal --- , South Africa

Background: Childhood obesity has become a growing global epidemic. In South Africa, overweight and obesity during childhood and adolescence are rising. The objectives of this study were (i) to estimate the prevalence of overweight and obesity among selected students in...

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Energy and water utilization in smallholder dairy farming: A milk bulking group case study in Malawi

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Thomas Nyanda Reuben --- , Malawi Grivin Chipula --- , Malawi Thawani Mpatama Sanjika --- , Malawi Darwin Dodoma Singa --- , Malawi

Malawi’s dairy farming is dominated by smallholder farmers living in rural areas. The farmers practise hand-milking and have an unreliable supply of clean water. Consequently, low milk yields of generally low quality are realized. Machines can safely be used for...

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Bull shark Carcharhinus leucas recruitment into the St Lucia Estuary, South Africa, after prolonged mouth closure, and the first observation of a neonate bull shark preyed on by a Nile crocodile Crocodylus niloticus

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: R Daly --- , South Africa P Le Noury --- , United Kingdom TN Hempson --- , Mozambique M Ziembicki --- , Mozambique JM Olbers --- , South Africa GM Brokensha --- , South Africa BQ Mann --- , South Africa

Estuaries provide critical nursery habitat for juvenile bull sharks Carcharhinus leucas, as they have the ability to withstand a wide range of salinities. St Lucia is the largest estuarine lake in Africa and was once a key nursery for bull...

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A review of the limnology of the Okavango Delta, Botswana

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Mangaliso J Gondwe --- , Botswana Mike Murray-Hudson --- , Botswana Nashaat M Mazrui --- , Botswana Oliver Moses --- , Botswana Edwin Mosimanyana --- , Botswana Oarabile Mogobe --- , Botswana

Water quantity and quality are important aspects in the management of aquatic ecosystems, including wetlands. This paper has integrated available knowledge from literature on the limnology of the Okavango Delta, Botswana. The current near-natural solute concentrations in the inflow waters...

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A review of the populations of tilapiine species in lakes Victoria and Naivasha, East Africa

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Edwine Yongo --- , Kenya Laurent Cishahayo --- , Peoples Republic of China Eunice Mutethya --- , Kenya Bonface Mnang’at Alkamoi --- , Kenya Kokwon Costa --- , Kenya Nzeyimana Jean Bosco --- , Peoples Republic of China

This paper discusses the catch trends, population attributes and biological characteristics of tilapiine species that are both native and that have been introduced into Lake Victoria and Lake Naivasha. Predation by Lates niloticus, species hybridisation, overfishing, pollution and eutrophication have...

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Understanding general pedagogical knowledge influences on sustainable teacher well-being: A qualitative exploratory study

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Irma Eloff --- , South Africa Ann-Kathrin Dittrich --- , Austria

This qualitative reconstructive study aimed to explore teacher general pedagogical knowledge and professional well-being. The informants were a convenience sample of 18 teachers from Austrian primary schools (n = 5), lower secondary schools (n = 7), and upper secondary schools...

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Gendered group conflict effects on prosecutors’ psychological well-being: A brief study

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Petro Erasmus --- , South Africa Refilwe G. Pila-Nemutandani --- , South Africa Abimbola A. Akanni --- , Nigeria Wandile F. Tsabedze --- , South Africa

We explored gendered group conflict effects on forms of occupational stress and psychological well-being of prosecutors in Botswana. A convenience sample of 92 prosecutors (female = 52%; married = 35.9%; mean years of service = 6.38 years, SD = 3.84...

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Is happiness based on psychological harmony? Exploring the mediating role of psychological harmony in the relationship between personality characteristics and occupational well-being

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Yuzhu Zhang --- , China Leigang Zhang --- , China Yunlong Wu --- , China

This study proposed and tested a theoretical model for specifying the structural relationship between personality characteristics (including core self-evaluation, social comparison, philosophies of human nature, psychological capital), psychological harmony, and occupational well-being in a higher education setting. We analysed data...

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Employee followership predispositions: Their perceptions of narcissistic traits in supervisors

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Jianjia He --- , China Shengmin Liu --- , China Jianbo Liu --- , China Thi Hoai Thuong Mai --- , China

We investigated the relationship between employee perceptions of narcissistic supervision and employee followership. Further, we investigated the influences of employee proactive personality, self-efficacy, political skill, and team political climate on said relationship. Data were from 383 employees of a large...

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“Just smile and wave”: Workplace requirements and emotional labour of academic staff at a South African university

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Susanna Maria O’Neil --- , South Africa Jeshika Gopal --- , South Africa

Emotional labour is a part of all work situations, and how people manage it influences their quality of work-life. We aimed to study lived emotional labour and sustainable work participation of a sample of 15 South African university lecturers (females=...

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Unsettling transdisciplinary perspectives on sustainability issues: A critical discourse (metadata) cross-case analysis

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Maximus Monaheng Sefotho --- , South Africa

This study is a critical discourse (metadata) cross-case analysis of six manuscripts on psychology of sustainable development that comprise a special section on transdisciplinary approaches to sustainable development. These six manuscripts span a broad range of topics: the psychology of...

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Exploring the psychological well-being of postgraduate accounting students at a South African university

Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: Corlia Janse van Vuuren --- , South Africa Karen Bodenstein --- , South Africa Marsha Oberholzer --- , South Africa

The challenges associated with higher education studies can impact significantly on the psychological well-being of students and can influence their academic success, even leading to anxiety, stress and depression. Factors influencing academic success in postgraduate accounting students have been well...

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Using digital photography to study moult extent in breeding seabirds

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Alexis Osborne --- , South Africa Peter G Ryan --- , South Africa

Scoring moult from live birds in the hand takes time, thereby increasing the handling stress to the birds. We show that digital photography can be used to efficiently study moult extent across multiple feather tracts. We photographed the upper wings...

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Weed species diversity and shifts in Conservation Agriculture-based crop rotation systems on the Highveld area of South Africa

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Elbé Hugo --- , South Africa Maryke Craven --- , South Africa Andries A Nel --- , South Africa

The occurrence and infestation levels of weed species are known to vary greatly within Conservation Agriculture (CA) systems as weed species will react differently to different habitats. Two on-farm CA trial sites, near Buffelsvallei and Viljoenskroon respectively, were established during...

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Challenges managing women with suspected Lynch Syndrome in Zimbabwe: a case report

Item type: Journal Article • Journal: Southern African Journal of Gynaecological Oncology • Authors: Kotti-Emily Mukucha --- , Zimbabwe Marshall T Manase --- , Zimbabwe Charles Muronda --- , Zimbabwe Judy Whittaker --- , South Africa Bothwell T Guzha --- , Zimbabwe

Lynch Syndrome (LS) is associated with a genetic predisposition to colorectal, endometrial and multiple extracolonic cancers. The lifetime risk of developing endometrial and ovarian cancers is 40–62% and 4–12% respectively. The case is presented of a 56-year-old woman with a...

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To err is human; to forgive, divine: A scoping review of workplace forgiveness experiences

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Salomé Elizabeth Scholtz --- , South Africa

Forgiveness in the workplace can play a crucial role in employee health and organisational outcomes. This scoping review explored the emerging evidence on employee experiences of workplace forgiveness. The search included JSTOR (2020) and Scopus databases, spanning the period 2010-2020...

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Low acceptance of intimate partner violence by pregnant women in Uganda predicts higher uptake of HIV self-testing among their male partners

Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Caroline J Vrana-Diaz --- , USA Jeffrey E Korte --- , USA Mulugeta Gebregziabher --- , USA Lauren Richey --- , USA Anbesaw Selassie --- , USA Michael Sweat --- , USA Rose Kisa --- , Uganda William Musoke --- , Uganda Harriet Chemusto --- , Uganda Esther Buregyeya --- , Uganda Joseph KB Matovu --- , Uganda Rhoda K Wanyenze --- , Uganda

Introduction: Heterosexual couples are at high risk for HIV acquisition in sub-Saharan Africa, and HIV self-testing (HST) is an additional approach to expand access to HIV testing services. However, it is not well known how gender equality is associated with...

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Pragmatic restaurant tipping in star-rated hotels in Kenya

Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Simon O Were --- , Kenya Moses N Miricho --- , Kenya Vincent N Maranga --- , Kenya

Tipping can be traced to Tudor England in the sixteenth century. This act transformed into a custom, spreading to many countries. However, tipping is observed differently from one country to the other and thus is not homogeneous from a global...

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Honouring the opening: Unfolding the rich ground between the philosophical thinking of Martin Heidegger and practice-based empirical work

Item type: Journal Article • Journal: Indo-Pacific Journal of Phenomenology • Authors: Kitty Maria Suddick --- , United Kingdom Vinette Cross --- , United Kingdom Pirjo Vuoskoski --- , Finland Kathleen T. Galvin --- , United Kingdom Graham Stew --- , United Kingdom

The aim of this article is to bring philosophical thinking closer to practice-based empirical work. Using Martin Heidegger’s philosophy, it offers a bridge between these two worlds, attempting to provide philosophical depth to the findings of a hermeneutic phenomenological study...

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The feasibility of resistance in the workplace: A critical investigation

Item type: Journal Article • Journal: Indo-Pacific Journal of Phenomenology • Authors: A. Benda Hofmeyr --- , South Africa

In this article, I undertake a critical interrogation of the complex relations of control operating in the contemporary workplace of the knowledge worker by drawing on Foucault’s theorisation of power and resistance. I plot the risks to which the knowledge...

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Population parameters, exploitation rate and diet of black-chinned Tilapia, Sarotherodon melanotheron Rüppell, 1852 (Pisces: Cichlidae), from Badagry Creek, Lagos, Nigeria

Item type: Journal Article • Journal: African Zoology • Authors: Prince Emeka Ndimele --- , Nigeria Fatai Gbolahan Owodeinde --- , Nigeria Edwin Oritseweyinmi Clarke --- , Nigeria Olufemi Olusegun Whenu --- , Nigeria Olufemi Olabode Joseph --- , Nigeria

The black-chinned tilapia (Sarotherodon melanotheron) is a member of the cichlid family, which can be cultured to complement the output from a predominantly catfish aquaculture industry in Nigeria. In order to achieve this objective, it is important to study the...

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An acoustic survey of beaked whale distribution at São Tomé and Príncipe, Gulf of Guinea, using an unmanned surface vessel

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: C Pierpoint --- , United Kingdom E Oliver --- , United Kingdom L Scala --- , United Kingdom D Hedgeland --- , United Kingdom

The first records of beaked whales, including Cuvier’s beaked whale Ziphius cavirostris, are reported from an acoustic baseline survey in the territorial waters of the Democratic Republic of São Tomé and Príncipe, Gulf of Guinea, West Africa. The survey was...

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Reproductive biology of the lesser African threadfin Galeoides decadactylus in Gabon, Gulf of Guinea

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: J-D Mbega --- , Gabon O Sadio --- , Senegal J-F Liwouwou --- , Gabon J-H Mvé Beh --- , Gabon I Bamba --- , Gabon A Eleng Spanian --- , Gabon M-L Yedi --- , Gabon F Cardiec --- , France F Le Loc’h --- , France

The lesser African threadfin Galeoides decadactylus (family Polynemidae) is one of the most captured marine fish species in Central Africa. This study examines aspects of the reproductive biology of G. decadactylus in the Libreville area of Gabon. Fish caught with...

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Occurrence of putatively resistant plantago in the winter rainfall region of South Africa: a survey

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Vhuthu Ndou --- , South Africa Ethel E Phiri --- , South Africa Frederik H Eksteen --- , Petrus J Pieterse --- , South Africa

Globally glyphosate is the most widely used herbicide. The alternative in many cropping situations is paraquat. After many years of success, neither herbicide could control plantago (Plantago lanceolata L., also ‘English plantain’) in Robertson. A survey was carried out by...

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Cover crop performance in an apple orchard and its effect on the macro-elements and carbon levels in a loamy sand

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Johan C Fourie --- , Carolyn L Howell --- , Marde Booyse --- , Kim M Adams --- ,

Five treatments were applied in a newly established orchard on a loamy sand near Vyeboom, South Africa. Treatment 1 (T1): chemical control in the tree row from bud break to harvest, with dwarf fescue (Festuca arundinaceae Schreb.) slashed regularly in...

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Are Cape Cormorants Phalacrocorax capensis losing the competition? Dietary overlap with commercial fisheries

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: OB Masiko --- , South Africa PG Ryan --- , South Africa CD van der Lingen --- , South Africa L Upfold --- , South Africa S Somhlaba --- , South Africa M Masotla --- , South Africa Y Geja --- , South Africa BM Dyer --- , South Africa RJM Crawford --- , South Africa AB Makhado --- , South Africa

Cape Cormorants Phalacrocorax capensis breed in southern Africa’s Benguela upwelling system and in 2013 were listed as Endangered by the IUCN following a population decrease of >50% over their three most recent generations. This decrease was associated with reduced prey...

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Investigating the influence of the extreme Indian Ocean Dipole on the 2020 influx of Red-necked Phalaropes Phalaropus lobatus in Kenya

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Raphaël Nussbaumer --- , Kenya Mathieu Gravey --- , Switzerland Améline Nussbaumer --- , Kenya Colin Jackson --- , Kenya

Ocean currents have wide-ranging impacts on seabird movement and survival. By extension, the extreme oscillations they are subject to, such as extreme Indian Ocean Dipole (IOD) events, can also be expected to dramatically influence seabird populations. This study links the...

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The effectiveness of diabetic foot-care education in a South African regional hospital: a randomised controlled trial

Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: Prabashni Manickum --- , South Africa Thandinkosi Madiba --- , South Africa Serela Ramklass --- , South Africa

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Tribute to a legend of southern African herpetology: Wulf Dietrich Haacke (1936–2021), with a bibliography of his herpetological contributions

Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Michael F Bates --- National Museum, South Africa Graham J Alexander --- University of the Witwatersrand, South Africa Aaron M Bauer --- Villanova University, USA

Windhoek-born Wulf Dietrich Haacke’s career as a herpetologist while associated with the Transvaal Museum in Pretoria spanned more than 50 years. He passed away on 30 June 2021 at the age of 84. This tribute summarises various aspects of his...

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Psychological empowerment and professional well-being of Chinese kindergarten teachers: The mediating effect of professional pressure

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Yanyan Liu --- , China Ruiqian Li --- , China Zeming Jin --- , China Xia Wu --- , China Wenyi Wang --- , China

We examined the relationship between teachers’ psychological empowerment and professional well-being, and the mediating effect of professional pressure thereon. The participants were female Chinese kindergarten teachers (n = 225; mean age = 26.79 years; SD = 5.78 years). The minority...

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Inclusive leadership and employee innovative work behaviours: Testing a psychological empowerment and leader-member exchange moderated-mediation model

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Bülent Çetinkaya --- , Turkey Tahir Yeşilada --- , Turkey

We investigated the association between inclusive leadership and innovative work behaviours, and the role of psychological empowerment and leader-member exchange in that relationship. Participants were 508 employees from tourism, textile, and banking sectors in Turkey (female = 51.38%; age range...

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The ecology of coastal wetland ponds created by diamond mining in southern Namibia. 1. Physical conditions

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: L Maritz --- , South Africa D Pillay --- , South Africa GM Branch --- , South Africa

Coastal diamond mining in southern Namibia involves constructing seawalls to hold the sea at bay, and seaward accretion of the shoreline by up to 800 m opens what was previously the surf zone for excavation and extraction of bedrock alluvial...

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Agricultural supply response for sunflower in South Africa (1947–2016): The partial Nerlovian framework approach

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Kenneth Nhundu --- , South Africa Colleta Gandidzanwa --- , South Africa Petronella Chaminuka --- , South Africa Manana Mamabolo --- , South Africa Sandile Mahlangu --- , South Africa Moraka N. Makhura --- , South Africa

The study estimates sunflower supply response in South Africa using time series data from 1947 to 2016, modelled through the Nerlovian Partial Adjustment approach. Short- and long-run price elasticities of 0.238 and 0.313 respectively, suggest that farmers do not easily...

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Macroinvertebrate community structure and diversity in relation to environmental factors in wetlands of the lower Gilgel Abay River catchment, Ethiopia

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Habtamu Getnet --- , Ethiopia Seyoum Mengistou --- , Ethiopia Bikila Warkineh --- , Ethiopia

The influence of environmental factors on the diversity of macroinvertebrates was studied in the wetlands of the Gilgel Abay River (GAR) catchment in Ethiopia. The study was done between September 2017 and March 2018, encompassing both wet and dry seasons...

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Tidal influence on fish faunal occurrence and distribution in an estuarine mangrove system in Ghana

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: NK Asare --- , Ghana JL Javier --- , United States

This study assessed the effects of tidal stages and habitat conditions on nekton assemblage and distribution in the Kakum River estuarine mangrove system in the Central Region of Ghana. Teleosts and crustaceans were sampled using pole seine and cast net...

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Structural assemblages of plant species in the Owabi Ramsar Wetland in the Ashanti Region of Ghana

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Collins A Nsor --- , Ghana Rockson Acolatse --- , Ghana John N Mensah --- , Ghana Samuel K Oppong --- , Ghana Daniel Dompreh --- , Ghana Louis Addai-Wireko --- , Ghana

Anthropogenic activities as predictors of species assemblages in the Owabi Ramsar Wetland were investigated between May and September 2019. Data were collected in 154 plots at five different sites. The prevalence index method was used to categorise the species into...

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The dimensionality of the UWES-17 and UWES-9: Testing second-order and bifactor models

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Hamfrey Sanhokwe --- , Zimbabwe

Extant research on the factor structure of the Utrecht Work Engagement Survey (UWES) across multiple study settings has consistently produced conflicting results. The study examined the dimensionality of the UWES-17 and UWES-9 using second-order and bifactor models. Cross-sectional data were...

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Building markets between institutional discontinuities: Intermediation between formal and informal sectors in developing countries

Item type: Journal Article • Journal: Africa Journal of Management • Authors: John M. Luiz --- , UK Baldwin Guchu --- , South Africa

We explore the role of an intermediary, Palladium, in Zimbabwe as it bridges the divide between formal and informal sectors and the process through which it connects these sectors. We conduct in-depth, qualitative interviews structured around our case study of...

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Technological characterisation of wood from Australian red cedar after first thinning of a plantation at five years

Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Kelvin Techera Barbosa --- , Brazil Andrey Pereira Acosta --- , Brazil Marília Lazarotto --- , Brazil Rafael Beltrame --- , Brazil Claudia Fernanda Lemons e Silva --- , Brazil Claudimar Sidnei Fior --- , Brazil

Australian red cedar (Toona ciliata M. Roem.) is a forest species planted in Brazil especially for lumber production. This study aimed to evaluate technological properties of the wood after selective first thinning of a plantation 5 years after planting. The...

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Cattle performance with Brachiaria and Panicum maximum forages in an integrated crop-livestock system

Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Mariana Borges de Castro Dias --- , Brazil Kátia Aparecida de Pinho Costa --- , Brazil Eduardo da Costa Severiano --- , Brazil Ubirajara Oliveira Bilego --- , Brazil Lourival Vilela --- , Brazil Wender Ferreira de Souza --- , Brazil Itamar Pereira de Oliveira --- , Brazil Ana Carolina Gomes da Silva --- , Brazil

Crop-livestock integration is an efficient technique that enables cropping and animal production in the same area, takes advantage of all the benefits that this synergism provides, and results in greater sustainability and lower environmental impact. The objectives of this study...

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Assessments of range-wide distribution of six African storks and their relationships with protected areas

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Jonah Gula --- , USA M Clay Green --- , USA Sarah Fritts --- , USA W Richard J Dean --- , South Africa KS Gopi Sundar --- , India

Species range maps provided by the IUCN and BirdLife International are recognised to sometimes mischaracterise distribution and have resulted in inaccurate status assessments. In this study we assessed distribution trends and relationships with protected area extent for six African storks,...

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COVID-19 lockdown and remote attendance teaching in developing countries: A review of some online pedagogical resources

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Abdulkarim A. Oloyede --- , Nigeria Nasir Faruk --- , Nigeria Wasiu O. Raji --- , Nigeria

The Corona Virus 2019 (COVID-19) pandemic has negatively impacted teaching and learning globally, imposing widespread closure of schools from the elementary to tertiary levels. As of 14 April 2020, teaching activities of over 1.75 billion students globally were disrupted in...

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Adoption of dual-purpose sweetpotato varieties under partial population exposure in Rwanda: Insights from an African plant breeding programme

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Gideon Danso-Abbeam --- , South Africa Lloyd J.S. Baiyegunhi --- , South Africa Mark D. Laing --- , South Africa Hussein Shimelis --- , South Africa

As part of the Green Revolution, plant breeding programmes such as the African Centre for Crop Improvement have trained scientists to breed crop varieties in Africa to address the challenges of low productivity. However, exposure to and adoption of these...

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Rethinking project management maturity models for the South African power sector

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Natisha Gareeb --- , South Africa Pantaleo D. Rwelamila --- , South Africa

The purpose of this paper is to determine whether the current Project Management Maturity Models (PMMM) described in the literature are suitable for the South African (SA) power sector. The research objective of this paper is to map the main...

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Analysis of offshore wind energy potential for power generation in three selected locations in Nigeria

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Mamman Rabiu Onoruoiza --- , Nigeria Oyewole Adedipe --- , Nigeria Sunday Albert Lawal --- , Nigeria Oluwafemi Ayodeji Olugboji --- , Nigeria Victor Chiagozie Nwachukwu --- , Nigeria

The rise in the global carbon footprint arising from fossil fuel sources has necessitated the need to explore sustainable and eco-friendly sources of energy. Wind as a source of renewable energy has been underutilized in Nigeria and this study is...

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Do lifestyle choices influence the development of overweight and obesity in the South African Air Force, Bloemfontein?

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Carina Haasbroek --- , South Africa Ronette Lategan-Potgieter --- , United States Cornel van Rooyen --- , South Africa Marizeth Jordaan --- , South Africa

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Teleworking and the jobs of tomorrow

Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Georges El Hajal --- , The Netherlands

Teleworking’s popularity as a flexible working arrangement has been on the rise. Today, it is a hot topic of discussion among employees and employers alike. The COVID-19 pandemic has accelerated the popularity of this trend and has convinced many that...

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How does (C)CAPM digest anomalies?

Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Qi Shi --- , China

In a pioneering effort, we re-evaluate the performance of (C)CAPM (joint CAPM and consumption CAPM) in digesting a large number of anomalies. Our key contribution illustrates that the performance of (C)CAPM appears to be quite sensitive to the choice of...

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Development and validation of an operational multi-layered model for estimation of soil moisture at point-scale in South Africa

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: L Myeni --- , South Africa ME Moeletsi --- , South Africa AD Clulow --- , South Africa

Data discontinuity is the major challenge that hinders the integrity of datasets from the sparse soil moisture monitoring networks in developing countries. In this study, a simplified, multi-layered soil water balance model to estimate daily soil moisture at point-scale from...

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Weed species composition and abundance in the main coffee production systems and regions of Ethiopia

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Abera Daba --- , Ethiopia Mekuria Tadesse --- , Ethiopia Selamawit Negassa Chawaka --- , Ethiopia Gezahegn Berecha --- , Ethiopia

A weed population survey was carried out to assess the variability in weed species composition and abundance in the main coffee production systems and regions of Ethiopia. A total of 168 coffee fields were assessed using a quadrat count in...

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The effects of eucalyptus Eucalyptus globulus and oregano Origanum vulgare essential oils on anaesthesia response in a Namibian marine species, silver kob Argyrosomus inodorus

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: NN Gabriel --- , Namibia C Chikwililwa --- , Namibia GM Liswaniso --- , Namibia S Louw --- , Namibia A Namwoonde --- , Namibia

The anaesthetic effectiveness of separate and combined eucalyptus Eucalyptus globulus and oregano Origanum vulgare essential oils (EO) were investigated in silver kob Argyrosomus inodorus and were compared with clove oil Eugenia caryophyllata. Argyrosomus inodorus adults (595.61 [SE 11.82] g) were...

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Variation of the relationships between lengths and weights applied to 123 fish species observed at Réunion Island (Indian Ocean)

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: D Roos --- , Réunion J Taconet --- , Réunion C Gentil --- , Réunion B Brisset --- , Réunion H Evano --- , Réunion Y Aumond --- , Réunion J Huet --- , Réunion C Lepetit --- , Réunion R Boymond-Morales --- , Réunion T Rungassamy --- , Réunion R Elleboode --- , France K Mahé --- , France

Body length–weight (L–W) relationships of 123 fish species (122 Actinopterygii and 1 Elasmobranchii) were studied from 10 218 individuals caught around Réunion Island from 2000 to 2021. All species, except for 4 with a very small number of individuals and...

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Psychosocial well-being of child orphans: The influence of current living place

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Beneyam Lake Yimer --- , Ethiopia

When children lose one or both their parents/care givers, they may present with profound and lifelong psychosocial well-being problems. This study aimed to examine the association between current living place and the psychosocial well-being of child orphans. A proportional stratified...

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Negative social interactions and the persistence of depression: Evidence from the women of Westbury, South Africa

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Cyril Dalene Rathnum --- , South Africa Jacqueline Moodley --- , South Africa

We explored women’s experiences of depression from the perspective of negative social interactions at the personal, family, and community levels. Informants were seven coloured women from Westbury, Johannesburg, South Africa (aged 28 – 56 years old). The participants answered open-ended...

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The Teacher Well-Being Scale (TWBS): Construct validity, model comparisons and measurement invariance in an Ethiopian setting

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Girum Tareke Zewude --- , Hungary Maria Hercz --- , Hungary

The present study aimed to adapt and validate the Teacher Well-Being Scale (TWBS), in an Ethiopian education setting. To test the reliability and validity of the scale, an Amharic version of the TWBS was developed and administered to a sample...

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Tourism graduate students’ employability skills: Results and implications of a Zimbabwean study

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Beaula Moyo --- , Turkey Hale Özgit --- , Turkey

The study investigated perceptions of employability skills of Tourism and Hospitality Management (THM) graduates in the Zimbabwean sector. The participants included 15 THM university graduates and 15 tourism sector managers. The participants completed semi-structured interviews regarding the perceived employability skills...

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Wellness needs of academic employees: A case study of a South African university

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Frances L. Jasson --- , South Africa Marieta Du Plessis --- , South Africa Abigail Simons --- , South Africa

Academic employees at Higher Education Institutions face numerous challenges, ranging from workload, student protests, and emergency remote learning. We explored the lived work wellness experiences of South African academics and how well institutional wellness services were meeting these needs. Thirteen...

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Use of remotely sensed derived metrics to assess wetland vegetation responses to climate variability-induced drought at the Soetendalsvlei wetland system in the Heuningnes Catchment, Western Cape province, South Africa

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: NC Ndlala --- , South Africa T Dube --- , South Africa

Wetland vegetation plays an important role in the environmental functioning of wetlands through the provision of ecosystem services, such as food and critical habitat for organisms that live in or near water resources. The ecosystem services provided by wetland vegetation...

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Determinants of technology adoption by micro and small enterprises (MSEs) in Awi zone, Northwest Ethiopia

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Adino Andaregie --- , Ethiopia Tessema Astatkie --- , Canada

Adoption of technology can enhance the development of micro and small enterprises (MSEs). But in Ethiopia, there is a very low adoption of broadband connections, mobile phones, computers, printers, scanners, copiers, and other technologies by MSEs. The main objective of...

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Exploring the perception of Nigerians towards nuclear power generation

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Daniel R. E. Ewim --- , South Africa Stephen S. Oyewobi --- , Nigeria Michael O. Dioha --- , India Chibuike E. Daraojimba --- , South Africa Suzzie O. Oyakhire --- , Nigeria Zhongjie Huan --- , South Africa

To decarbonize the Nigerian power sector and ensure a reliable electricity supply, nuclear power will play a key role. However, public acceptance must be considered for the successful introduction of nuclear power. This study examines the perceptions of Nigerians towards...

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Host specificity of the Pygmy Falcon Polihierax semitorquatus: a review

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: H Dieter Oschadleus --- , South Africa

The Pygmy Falcon Polihierax semitorquatus does not build its own nest but is an obligate user of the nests of colonial birds for roosting and breeding. The nests of various weavers and starlings have been listed, suggesting a wide range...

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The role of career wellness in living and studying for South African first-year university students

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Henry D. Mason --- , South Africa Kobus Fourie --- , South Africa

This study explored the relationship between career wellness, emotional wellness, life satisfaction, and learning and study strategy (LSS) orientation among a sample of 15 458 South African first-year university students. Data were obtained from an institutional repository, including assessments on...

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Cultural knowledge and perceptions of students towards mental illness in South Africa

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Bianca Lima-Smit --- , South Africa Kathryn Nel --- , South Africa Mokgadi Setwaba --- , South Africa

This study explored perceptions of mental illness and the mentally ill in a South African setting. Informants were a purposive sample of 16 undergraduate students (female = 10, male = 6; age range = 18 to 25 years). Data were...

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Contribution of ankle-brachial index measurement in screening for arteriopathy obliterans of the lower limbs in type 2 diabetics

Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: Sitraka Angelo Raharinavalona --- , Madagascar Rija Eric Raherison --- , Madagascar Thierry Razanamparany --- , Madagascar Dally Rasoaniana --- , Madagascar Radonirina Lazasoa Andrianasolo --- , Madagascar Andrinirina Dave Patrick Rakotomalala --- , Madagascar

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Yield, nutritional composition, and consumer acceptability of sweetpotato cultivars cultivated with soil amendments in the Middleveld of Eswatini

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Samuel Kofi Tutu --- , Eswatini Henry R Mloza Banda --- , Eswatini Cinisani Tfwala --- , Eswatini

Uncertainties about the effects of nutrient amendment on the culinary attributes of sweetpotato have limited fertiliser use in Eswatini. The study was carried out at a moist and dry location of Eswatini to investigate the culinary and nutritional attributes of...

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Screening herbicides and herbicide mixtures to identify alternative chemical controls for resistant plantago biotypes

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Vhuthu Ndou --- , South Africa Ethel E Phiri --- , South Africa Petrus J Pieterse --- , South Africa

Herbicide mixtures are beneficial since they delay the occurrence of resistance to herbicides, provided that the herbicides used are effective at controlling the target weed species. Recently, plantago (Plantago lanceolata L.) was found to show 23 and 10-fold-resistance to glyphosate...

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Electronic customer relationship management framework for Game Parks in Zimbabwe

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Theo Tsokota --- Midlands State University, Zimbabwe Gilbert Mahlangu --- Midlands State University, Zimbabwe Muchaneta Enipha Muruko --- MSc Information System Management Graduate Student at Midlands State University, Zimbabwe Colletor Tendeukai Chipfumbu Kangara --- Midlands State University, Zimbabwe

Electronic customer relationship management (e-CRM) is acknowledged today as an obligatory concept of customer relationship management in the world of services. However, there is a lack of any clear e-CRM framework for Game Parks in Zimbabwe. Consequently, this study’s primary...

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An Android-based mobile platform for understanding Residential PV system sizing

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Iheanacho Henry Denwigwe --- University of Lagos, Nigeria Joseph Dare Akinde-Peters --- University of Lagos, Nigeria Olubayo Moses Babatunde --- University of Lagos, Nigeria Oluwaseye Samson Adedoja --- Kogi State University Campus, Nigeria Ibrahim Abiola Taiwo --- Bournemouth University, UK Toyosi Beatrice Adedoja --- Cooperative Information Network (COPINE), NASRDA, OAU Campus, Nigeria

This research study presents the design of a mobile Android application which provides efficient PV sizing recommendations for residential users. The paper aims to promote the adoption of solar energy to meet energy demands for residential use, by providing accurate...

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Empirical assessment of South Africa’s national government websites for evidence of e-Government growths

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Letjedi Thabang Mabinane --- University of Johannesburg, South Africa Emmanuel Innocents Edoun --- University of Johannesburg, South Africa

To draw insights and better understand the online presence of South Africa's national government departments, an empirical analysis of their websites is conducted. The objective of this study was to determine whether South Africa has deployed enough online services since...

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Engaging HIV-prevention ambassadors to promote oral PrEP among adolescent girls and young women: results of a Zimbabwe field test

Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Morgan Garcia --- , USA Definate Nhamo --- , Zimbabwe Nicole Macagna --- , USA Takudzwa Mamvuto --- , Zimbabwe Naledi Katsande --- , Zimbabwe Giuliana Morales --- , USA Michele Lanham --- , USA Joseph Murungu --- , Zimbabwe Imelda Mahaka --- , Zimbabwe Natalie Kruse-Levy --- , Zimbabwe Kristine Torjesen --- , USA

The HIV Prevention Ambassador Training Package for Adolescent Girls and Young Women was created in collaboration with adolescent girls and young women (AGYW) to improve skills, knowledge, and attitudes about oral pre-exposure prophylaxis (PrEP) among peer “ambassadors”. It was field...

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Nematode community structure and distribution along the Kenyan continental shelf

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: SM Hashim --- University of Nairobi, Kenya AWN Muthumbi --- University of Nairobi, Kenya JM Githaiga --- University of Nairobi, Kenya J Okondo --- Kenya Marine and Fisheries Research Institute (KMFRI), Kenya

Meiofauna communities were analysed from samples collected at four stations on the Kenyan continental shelf (Shimoni, Kwale, Mombasa and Kilifi) during the maiden cruise of the RV Mtafiti, 12–21 December 2015. Nematodes were identified to genus level, and their distribution...

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Maturity length, fecundity and spawning season of Atlantic chub mackerel Scomber colias in the coastal waters of Ghana (west-central Gulf of Guinea)

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: JE Kassah --- University of Cape Coast, Ghana J Blay --- Centre for Coastal Management (Africa Centre of Excellence in Coastal Resilience), University of Cape Coast, Ghana I Okyere --- University of Cape Coast, Ghana N Lazar --- University of Rhode Island, United States

Aspects of the reproductive biology of Atlantic chub mackerel Scomber colias are reported here based on data from random samples of artisanal fish landings from Ghana. The specimens were between 13.7 cm and 40.7 cm total length (TL), and both...

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Challenges to the integration of the Platfontein San in South Africa between 1990 and 2003

Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Eldar Salakhetdinov --- University of South Africa, South Africa

This article is based on a narrative case study that explores the controversy in the history surrounding the Platfontein San. During the South African border war, San soldiers joined the South African Defence Force in their fight against African liberation...

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DRIFT: incorporating an eco-social system network and time series approach into environmental flow assessments

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: AR Joubert --- , South Africa CA Brown --- , South Africa JM King --- , South Africa H Beuster --- , South Africa A Greyling --- , South Africa

DRIFT (Downstream Response to Imposed Flow Transformation) is an interactive, ecological-social process and software package to assist with environmental flow assessments and river management decision-making. It was originally developed in the 1990s and has subsequently evolved and been applied in...

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Effects of award incentives and competition on entrepreneurship development of women farmers in North West province, South Africa

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Enioluwa Jonathan Ijatuyi --- , South Africa Oladimeji Idowu Oladele --- , Nigeria Abiodun Olusola Omotayo --- , South Africa

Female agricultural workers play an important role in feeding the world; hence, there is a need to encourage females in agricultural enterprises of developing countries. This study specifically identified the socioeconomic characteristics of the participants, their degree of participation, the...

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Climate smart technology for storage of fresh pro-vitamin A bio-fortified cassava

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Olumuyiwa Adekanmi Babarinsa --- , Nigeria Isaac Babatunde Oluwalana --- , Nigeria Mathew Kolawole Bolade --- , Nigeria

Climate change is a problem affecting food security across the globe. The climate change effect of rising temperatures can be mitigated by using climate-smart crops such as cassava and climate-smart technology such as an Evaporative Cooling Structure (ECS). A 150 kg...

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A Notsie narrative perspective on turnover in the UK financial services industry

Item type: Journal Article • Journal: Africa Journal of Management • Authors: David Sarpong --- , United Kingdom Mairi Maclean --- , United Kingdom Wuraola Hassan --- , United Kingdom

Drawing on a cultural perspective from the Global South, Notsie narrative, a West African literary folklore, we explore the high churn rate in the UK financial services industry. Viewing the storied accounts of former financial complaint handlers through a Notsie...

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Building legitimacy and distinctiveness on Nigerian-Canadian transnational ventures’ websites

Item type: Journal Article • Journal: Africa Journal of Management • Authors: Diane A. Isabelle --- , Canada Mika Westerlund --- , Canada Victoria Sajuyigbe --- ,

Achieving legitimacy in several markets is crucial for transnational ventures. Moreover, the literature on competitive strategy suggests that distinctiveness from competitors is a major source of competitive advantage for ventures. Nevertheless, our knowledge is sparse on how transnational ventures use...

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Consumer acceptability of fried chips made from South African sweet potato cultivars

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: SM Laurie --- , South Africa WM Mphela --- , South Africa

In South Africa, the processing of sweet potatoes has a high potential for economic gain, therefore, chips were prepared from six sweet potato cultivars with varying flesh colours for consumer preference evaluation. Scoring was based on colour, crispness, taste and...

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Employee psychological well-being, transformational leadership and the future of hospitality jobs

Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Laurens Alexander Walbeek --- NHL Stenden University of Applied Sciences, The Netherlands Georges El Hajal --- NHL Stenden University of Applied Sciences, The Netherlands

Employee psychological well-being is a central concern for hospitality establishments as it impacts talent retention. This empirical research explores the relationship between transformational leadership and employee psychological well-being. This relationship is tested through a mediation model where transformational leadership is...

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Validation of lipid extraction and correction methods for stable isotope analysis of freshwater food webs in southern Africa

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: A van der Merwe --- , South Africa A Myburgh --- , South Africa G Hall --- , South Africa A Kaiser --- , South Africa S Woodborne --- , South Africa

Stable isotope analysis is ubiquitous as a method to investigate food-web dynamics at various scales in aquatic ecology. Most studies make use of dorsal muscle tissue, which involves lethal sampling of the fish. The sampling of muscle tissue is often...

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An assessment of water and sediment quality of aquatic ecosystems within South Africa’s largest floodplain

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: D van Rooyen --- , South Africa R Gerber --- , South Africa NJ Smit --- , South Africa V Wepener --- , South Africa

Ndumo Game Reserve (NGR), a Ramsar site, situated in South Africa’s largest floodplain (Phongolo River floodplain) in northern KwaZulu-Natal, with important aquatic ecosystems: the Usuthu and Phongolo rivers and their associated floodplain lakes. While the Phongolo River is regulated, the...

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Some notes on orthogonally additive polynomials

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: C. Schwanke --- University of Pretoria, South Africa

We provide two new characterizations of bounded orthogonally additive polynomials from a uniformly complete vector lattice into a convex bornological space using separately two polynomial identities of Kusraeva involving the root mean power and the geometric mean. Furthermore, it is...

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On the parabolicity of linear Weingarten spacelike submanifolds in the de Sitter space

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Railane Antonia --- Universidade Federal da Paraíba, Brazil Henrique F. de Lima --- Universidade Federal de Campina Grande, Brazil

In this paper, we deal with complete linear Weingarten spacelike sub-manifold immersed with parallel normalized mean curvature vector in de Sitter space of index p. Imposing appropriate restrictions on the values of the mean curvature function H, we establish a...

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Curvature properties of metric and semi-symmetric linear connections

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Milo&scaron; Z. Petrović --- , Serbia Nenad O. Vesić --- , Serbia Milan Lj. Zlatanović --- , Serbia

Considering a non-symmetric linear connection and its dual one appear 6 independent curvature tensors [15]. In the present paper we study properties of curvature tensors of semi-symmetric metric connections on a generalized Riemannian manifold.

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Dietary intake of first- and third-year female dietetics students at a South African university

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Nikki L Verwey --- University of Pretoria, South Africa Joyce Jordaan --- University of Pretoria, South Africa Friedeburg AM Wenhold --- University of Pretoria, South Africa

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Seed powder extract of physic nut (Jatropha curcas) as a biopesticide for weevils (Callosobruchus maculatus) in stored cowpea (Vigna unguiculata)

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: F. O. Ifeanyieze --- University of Nigeria, Nigeria H. I. Ameh --- University of Nigeria, Nigeria T. E. Ejiofor --- University of Nigeria, Nigeria M. E. Ikehi --- University of Nigeria, Nigeria F. M. Onu --- University of Nigeria, Nigeria

The study explored the effectiveness of physic nut (Jatropha curcas) in the control of cowpea weevils (Callosobruchus maculatus). The repellence, mortality rates and progeny emergence of weevils were observed, as well as germination viability of the treated cowpea seeds. The...

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Mindfulness and mental health in medical staff in the COVID-19 period: Mediating role of perceived social support and sense of security

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Jundong Liao --- Sichuan Normal University, China Xinlong Sun --- Sichuan Normal University, China Xiaohao Mai --- , China Yuhui Du --- Sichuan Normal University, China Fang Li --- Sichuan Normal University, China

This study examined the association between mindfulness and the mental health outcomes of medical staff during the COVID-19 outbreak period. We also explored the perceived social support and sense of security as mediators in this relationship. The participants were 400...

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A characterisation of weightable quasi-metric generating functions

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Dhananjay Gopal --- Guru Ghasidas Vishwavidyalay, India Oscar Valero --- University of Balearic Islands, Spain Shubham Yadav --- S.V. National Institute of Technology, India

In 1994, S.G. Matthews introduced the notions of partial metric and weighted quasi-metric and, in addition, he showed that both are dual. In fact, he developed a method for generating weightable quasi-metrics from partial metrics and conversely. Recently, J.J. Miñana...

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Preenveloping classes of acts

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Mohanad Farhan Hamid --- University of Technology-Iraq, Iraq

Preenvelopes of acts over a monoid are defined by analogy with Enochs’ definition of preenvelopes of modules. Provided that it is closed for pure subacts, a class of acts is shown to be preenveloping precisely when it is closed under...

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Road counts reveal The Gambia’s West Coast region still has the densest population of Hooded Vultures Necrosyrtes monachus in Africa

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Mawdo Jallow --- , The Gambia Momodou L Dibba --- , The Gambia Fagimba Camara --- , The Gambia David R Barber --- , United States Keith L Bildstein --- , United States Lindy J Thompson --- , United States

Road surveys are a useful tool for comparing vulture population trends. Here we present data from road surveys to count Hooded Vultures Necrosyrtes monachus in The Gambia in 2017 and 2021. In the first nationwide road survey in November 2017...

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Associations between COVID-19 vaccine hesitancy and the experience of violence among women and girls living with and at risk of HIV in Nigeria

Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Morenike Oluwatoyin Folayan --- Obafemi Awolowo University, Nigeria Olujide Arije --- Obafemi Awolowo University, Nigeria Amaka Enemo --- , Nigeria Aaron Sunday --- , Nigeria Amira Muhammad --- Northern Nigerian Transgender Initiative, Nigeria Hasiya Yunusa Nyako --- , Nigeria Rilwan Mohammed Abdullah --- , Nigeria Henry Okiwu --- , Nigeria Erik Lamontagne --- , Switzerland

Aim : Women and girls living with and at high risk of HIV (WGL&RHIV) had an increased risk for gender-based violence (GBV) during COVID-19. The study aimed to assess the associations between vaccine hesitancy and GBV, HIV status and psychological...

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Slow repair: gender and restorative justice in Zimbabwe

Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Shannon Morreira --- University of Cape Town, South Africa

This article reports on a ceremony gone awry at Kufunda Village, Zimbabwe, in which women had refused to follow a gendered cultural script of forgiveness and had instead released rather than slaughtered a chicken. They thus reinscribed old symbols with...

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“Armed with faith”: church membership, Pentecostal beliefs and migrant belonging in Harare, Zimbabwe

Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Rufaro Hamish Mushonga --- University of Zimbabwe, Zimbabwe

This ethnographic study explores how church membership and Pentecostal beliefs afford Nigerian migrant traders living in Harare an opportunity to embed themselves within the spaces of Harare’s Downtown informal settlement, which are characterised by entrenched and heightened forms of exclusion...

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Diet and condition of juvenile deep-water hake Merluccius paradoxus on the west coast of southern Africa

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: E Gammon --- University of Cape Town, South Africa CL Moloney --- University of Cape Town, South Africa MR Lipinski --- Rhodes University, South Africa

The composition of the diet of juvenile deep-water hake Merluccius paradoxus is described and compared for three body-condition groups (below-average, average, and above-average). Diet was analysed using three metrics: occurrence, numeric and gravimetric. Juvenile hakes were caught in January and...

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Evaluation of strategic management using SWOT-FAHP approaches in forest roads management

Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Hakan Can --- Kastamonu University, Turkey Korhan Enez --- Kastamonu University, Turkey Ender Buğday --- Çankiri Karatekin University, Turkey

The most significant steps in the management of forests is to identify the management strategies of existing forest roads, which are basic infrastructure facilities. In the present study, managerial strategies were put forward by evaluating the strengths, weaknesses, opportunities, and...

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On rings related to filial and left filial rings

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: D.I.C. Mendes --- University of Beira Interior, Portugal

A ring R is called filial (left weakly filial) if it satisfies the following condition: for all subrings J and I of R, if J is an ideal of I and I is an ideal of R, then J is...

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The power drivers of public sector audit committee effectiveness

Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: Philna Coetzee --- Tshwane University of Technology, South Africa Lourens Erasmus --- University of South Africa, South Africa Mangakane Pududu --- University of South Africa, South Africa Shan Malan --- University of South Africa, South Africa Audrey Legodi --- Tshwane University of Technology, South Africa

Audit committees are often implicated as accomplices in governance failures, or slow to react to findings. The power drivers of public sector audit committee effectiveness in developing countries is an under-researched area. With the progress of developing countries threatened by...

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Does vitamin A rich orange-fleshed sweetpotato adoption improve household level diet diversity? Evidence from Ghana and Nigeria

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Souleimane Adeyemi Adekambi --- University of Parakou (UP), Parakou Julius Juma Okello --- , Uganda Jan Low --- , Kenya Putri Ernawati Abidin --- , Ghana Edward Carey --- , Ghana

Promoting the consumption of locally available food crops such as orange-fleshed sweetpotato (OFSP) that are rich in beta carotene, a precursor for vitamin A, has been shown to be a highly effective means of fighting against vitamin A deﬁciency at...

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A new lower bound on the total domination number of a graph

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Majid Hajian --- Shahrood University of Technology, Iran Michael A. Henning --- University of Johannesburg, South Africa Nader Jafari Rad --- Shahed University, Iran

A set S of vertices in a graph G is a total dominating set of G if every vertex in G is adjacent to some vertex in S. The total domination number, γt (G), is the minimum cardinality of a...

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Weak limited sets and operators on Banach lattices

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Farid Afkir --- Moulay Ismaïl University, Morocco Aziz Elbour --- Moulay Ismaïl University, Morocco

In this paper, we prove that an operator T : E → F , between two Banach lattices, maps order intervals onto weak limited sets if and only if the modulus |ST| exists and is Dunford-Pettis for every Dunford-Pettis operator...

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Remarks on star weakly Lindelöf spaces

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Yan-Kui Song --- Nanjing Normal University, P.R. China Wei-Feng Xuan --- Nanjing Audit University, P.R. China

Let P be a topological property. A space X is said to be star P if whenever is an open cover of X, there exists a subspace A ⊆ X with property P such that , where . In this...

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On S-1-absorbing prime and weakly S-1-absorbing prime ideals

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Najib Mahdou --- University S.M. Ben Abdellah Fez, Morocco Abdeslam Mimouni --- King Fahd University of Petroleum & Minerals, Saudi Arabia Youssef Zahir --- Mohammed-V University in Rabat, Morocco

Let A be a commutative ring with identity and S be a multiplicative subset of A. In this paper, we introduce and study the notions of S-1-absorbing and weakly S-1-absorbing prime ideals as generalizations of the notion of prime ideals...

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Normal ordering in the shift algebra and the dual of Spivey’s identity

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Matthias Schork --- , Germany

Spivey’s Bell number identity involving Stirling numbers of the second kind was derived by Spivey considering set partitions. Since its original derivation it has been derived (and generalized) by many authors using diﬀerent techniques. In particular, Katriel gave a proof...

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Mother-to-child transmission of HIV and its prevention: awareness and knowledge in Uganda and Tanzania

Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Gundel Harms --- Institute of Tropical Medicine, Charité-University Medicine Berlin, Katja Schulze [B0002] Ilaria Moneta --- International Health, Charité-University Medicine Berlin, Chris Baryomunsi [B0004] Paulina Mbezi [B0005] Gabriele Poggensee --- Department of Infectious Disease Epidemiology, Robert Koch Institute in Berlin,

Awareness and knowledge about HIV mother-to-child transmission (MTCT) and preventive measures in different population groups and health personnel were analysed in future intervention areas in western Uganda and south-western Tanzania. In Uganda, a total of 751 persons (440 clients of...

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Women in Chinsapo, Malawi: vulnerability and risk to HIV/AIDS

Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Jayati Ghosh --- Division of Business, Dominican University of California, Ezekiel Kalipeni --- Geography and African Studies, University of Illinois at Urbana-Champaign,

Malawi, a very poor country located in southern Africa, is no exception to the growing trend and severity in HIV prevalence. By the end of 2003 there were 900 000 adults and children in Malawi living with HIV/AIDS. Adult prevalence...

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Perceptions of acceptability and utility of microbicides in Ghana, West Africa: A qualitative, exploratory study

Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Amanda E Tanner --- Section of Adolescent Medicine, Indiana University School of Medicine,

Vaginal microbicides, substances that may substantially decrease transmission of sexually transmitted infections (STI) including human immunodeficiency virus (HIV), are currently in clinical trials. They are being presented as woman-initiated prevention methods that have the potential to be used without partners'...

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The Farmer Life School: experience from an innovative approach to HIV education among farmers in South Africa

Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Kees Swaans --- Athena Institute for Research on Innovation and Communication in Health and Life Sciences, VU University Amsterdam, the Netherlands Jacqueline Broerse --- Department Science Communication, Athena Institute for Research on Innovation and Communication in Health and Life Sciences, VU University Amsterdam, the Netherlands Monique Salomon --- Centre for Environment, Agriculture and Development (CEAD), University of KwaZulu-Natal, South Africa Maxwell Mudhara --- Farmer Support Group, Community Development and Outreach Division of the Centre for Environment, Agriculture and Development, University of KwaZulu-Natal, South Africa Makhosazana Mweli --- , South Africa Joske Bunders --- Athena Institute of the VU University Amsterdam, the Netherlands

The Farmer Life School (FLS) is an innovative approach to integrating HIV education into life skills and technical training for farmers. This study aims to gain insight into the strengths and weaknesses of this relatively new approach, through the implementation...

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‘When I get better I will do the test’: Facilitators and barriers to HIV testing in Northwest Region of Cameroon with implications for TB and HIV/AIDS control programmes

Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Nwarbébé Barnabas Njozing --- Public Health at the Division of Epidemiology and Global Health, Umeå University, Sweden Kerstin E Edin --- Unit for Epidemiology and Global Health, Department of Public Health and Clinical Medicine, Umeå Centre of Gender Studies, University, Anna-Karin Hurtig --- Public Health at the Division of Epidemiology and Global Health, Umeå University, Sweden

The World Health Organization has recommended collaborative activities between TB and HIV programmes with routine counselling and testing for HIV among TB patients in order to improve the uptake of HIV services. We carried out qualitative research interviews with 21...

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Social and economic consequences of HIV and AIDS on children: case study of a high-density community in Harare, Zimbabwe

Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Joshua Kembo --- Bureau of Market Research, University of South Africa,

We present results from a household-based survey that was conducted in Mabvuku, a high-density community in Zimbabwe. The objective of the study was to improve understanding of social and economic consequences of HIV and AIDS on children. Children affected by...

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Risk factors associated with HIV infection among young persons aged 15–24 years: Evidence from an in-depth analysis of the 2005–06 Zimbabwe Demographic and Health Survey

Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Joshua Kembo [d118e18]

This study focuses on factors that predispose young persons aged 15–24 years in Zimbabwe to infection from HIV. Using the Mosley and Chen framework, multivariate modelling was used to assess the effect of demographic, socio-economic and behavioural factors on the...

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Social and cultural aspects of HIV and AIDS in West Africa: A narrative review of qualitative research

Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Helle Samuelsen [d133e18] Ole Norgaard Lise Rosendal Ostergaard

With the increasing focus on the role of social aspects of the HIV epidemic in sub-Saharan Africa, the need for an overview of existing research dealing with such issues has become more urgent. The objective of this article is to...

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Perception of risk of HIV infections and sexual behaviour of the sexually active university students in Zimbabwe

Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Njabulo Nkomazana --- , , Republic of South Africa Pranitha Maharaj --- , , Republic of South Africa

The study sought to establish university students' perceptions of risk of HIV infections. A cross-sectional survey was conducted on 345 sexually active students at two universities in Zimbabwe (one state and one private). Results revealed that above a quarter of...

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HIV in (and out of) the clinic: Biomedicine, traditional medicine and spiritual healing in Harare

Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Stephen O'Brien --- , , Australia Alex Broom --- , , Australia

Contemporary lived experiences of the human immunodeficiency virus (HIV) are shaped by clinical and cultural encounters with illness. In sub-Saharan countries such as Zimbabwe, HIV is treated in very different ways in various therapeutic contexts including by biomedical experts, traditional...

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Interplay between economic empowerment and sexual behaviour and practices of migrant workers within the context of HIV and AIDS in the Lesotho textile industry

Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Pius Tangwe Tanga --- , , South Africa Magdaline Nji Tangwe --- , , South Africa

Economic empowerment brings with it a wide range of consequences, both positive and negative. The objective of this paper was to examine the relationship between economic empowerment and the sexual behaviour and practices of migrant workers within the context of...

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Zimbabwe's national AIDS levy: A case study

Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Nisha Bhat --- , Peter H. Kilmarx --- , Freeman Dube --- , Albert Manenji --- , Medelina Dube --- , Tapuwa Magure --- ,

Background: We conducted a case study of the Zimbabwe National AIDS Trust Fund (‘AIDS Levy’) as an approach to domestic government financing of the response to HIV and AIDS.

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Social support seeking and self-efficacy-building strategies in enhancing the emotional well-being of informal HIV/AIDS caregivers in Ibadan, Oyo state, Nigeria

Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Bernedette Okwuchukwu Okeke --- , Nigeria

This study examined the relative efficacy of social support seeking (SSS) and self-efficacy building (SEB) in the management of emotional well-being of caregivers of people suffering from HIV/AIDS. It was based at the United States President's Emergency Plan for AIDS...

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‘I thought if I marry the prophet I would not die’: The significance of religious affiliation on marriage, HIV testing, and reproductive health practices among young married women in Zimbabwe

Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Denise Dion Hallfors --- , USA Bonita J. Iritani --- , USA Lei Zhang --- , USA Shane Hartman --- , USA Winnie K. Luseno --- , USA Elias Mpofu --- , , Australia Simbarashe Rusakaniko --- , , Zimbabwe

This study examines the association between religious affiliation and reasons for marriage, perceived church attitudes, and reproductive health-seeking behaviors, including HIV testing, among young women in eastern rural Zimbabwe. The sample comprised women (N = 35) who had married by 2012 while...

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Problematizing official narratives of HIV and AIDS education in Scotland and Zimbabwe

Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Tarsisio Nyatsanza --- , , , South Africa Lesley Wood --- , , South Africa

When human immunodeficiency virus (HIV) and acquired immune deficiency syndrome (AIDS) are framed within an intersectional approach, they have the potential to transform understandings of social justice within the curriculum and education policy and practice in general. Yet, this transformative...

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Laughter therapy as an intervention to promote psychological well-being of volunteer community care workers working with HIV-affected families

Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Irene Hatzipapas --- , , South Africa Maretha J. Visser --- , , South Africa Estie Janse van Rensburg --- , , South Africa

The study explores the experiences of volunteer community care workers working with HIV-affected families, participating in laughter therapy. Laughter therapy is being used as an intervention to positively influence individuals experiencing various forms of emotional distress. Community care workers play...

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A weighted bootstrap approach to logistic regression modelling in identifying risk behaviours associated with sexual activity

Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Humphrey Brydon --- , , South Africa Rénette Blignaut --- , , South Africa Joachim Jacobs --- , , South Africa

The latest population estimates released by Statistics South Africa indicate that 25.03% of all deaths in 2017 in South Africa were AIDS-related. Along with these results, it is also reported that 7.06% of the population were living with HIV, with...

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A model to understand HIV-related stigma and the psychosocial well-being of children orphaned by AIDS: a theory generative approach

Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Z. Yassin --- University of the Western Cape, South Africa C. Erasmus --- University of the Western Cape, South Africa J. Frantz --- University of the Western Cape, South Africa

HIV-related stigma has negatively impacted the psychosocial well-being of children who have been orphaned by AIDS-related causes. Response to reducing stigma and ensuring child well-being is hindered by the limited understanding of HIV-related stigma and how it affects the psychosocial...

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On Bufo pantherinus A. Smith, 1828 (Anura: Bufonidae), the leopard toad of the southwestern Cape, South Africa, with the designation of a neotype

Item type: Journal Article • Journal: African Journal of Herpetology • Authors: JohnC. Poynton --- , UK Angelo J.L. Lambiris --- University of Durban-Westville, South Africa

The leopard toad of the southwestern tip of Africa has appeared under the names Bufo pantherinus, Bufo cruciger, Bufo regularis and Bufo pardalis. This paper examines the nomenclatural confusion and proposes a neotype of B. pantherinus A. Smith, 1828, to...

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A critically endangered new species of Nectophrynoides (Anura: Bufonidae) from the Kihansi Gorge, Udzungwa Mountains, Tanzania

Item type: Journal Article • Journal: African Journal of Herpetology • Authors: JohnC. Poynton --- , England KimM. Howell --- University of Dar es Salaam, Tanzania BarryT. Clarke --- , England JonC. Lovett --- University of York, England

A new species of the Tanzanian ovoviviparous dwarf toad Nectophrynoides is described from the Kihansi River Gorge in the Udzungwa Mountains, and a key to the genus provided. The new species, currently known only from small patches of spray-dependent wetland...

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Polemon barthi Jan 1858 and P. bocourti Mocquard 1897, two West African snakes which are allopatric, not sympatric

Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Barry Hughes --- , UK

Two species of Polemon ‐ P. barthi and P. bocourti, are morphologically very similar and are currently supposed to both occur within the rain forest of West Africa (Guinea to Nigeria) and Central Africa (Cameroon eastward). Reliance on postocular number...

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Systematics of West African skinks in the Chalcides thierryi group: Composition, distribution, and redescription of types

Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Eli Greenbaum --- The University of Kansas, USA

The taxonomic status of the West African skink taxa Chalcides pulchellus and C. thierryi have fluctuated in the literature since their original descriptions a century ago. Until recently, C. pulchellus was known only from the holotype, but recent collecting has...

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Population structure of the African Clawed Frog (Xenopus laevis) in maize‐growing areas with atrazine application versus non‐maize‐growing areas in South Africa

Item type: Journal Article • Journal: African Journal of Herpetology • Authors: LouisH. Du Preez --- North‐West University, South Africa KeithR. Solomon --- University of Guelph, Canada JimA. Carr --- Texas Tech University, JohnP. Giesy --- Michigan State University, USA TimothyS. Gross --- Florida Caribbean Science Center‐USGS‐BRD, USA RonaldJ. Kendall --- Texas Tech University, USA ErnestE. Smith --- Texas Tech University, USA GlenL. Van der Kraak --- University of Guelph, Canada Ché Weldon --- North‐West University, South Africa

The herbicide atrazine has been suggested to cause gonadal deformities in frogs and could possibly impact on reproduction. Since the early 1960s, atrazine has been used in large amounts in maize production areas of South Africa. These areas overlap with...

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Letheobia pauwelsi, a new species of blindsnake from Gabon (Serpentes: Typhlopidae)

Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Van Wallach --- Harvard University, USA

A new species of African blindsnake related to western Letheobia caecus and eastern L. acutirostratus is described from Gabon. It differs from both species in having an hourglass dorsal rostral shape, a ventrally angled corneal cutting edge, and a unicameral...

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Phrynobatrachus alticola Guibé & Lamotte, 1961 is a junior synonym of Phrynobatrachus tokba (Chabanaud, 1921)

Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Mark‐Oliver Rödel --- Theodor‐Boveri‐Institute (Biocenter of the University), Germany Joachim Kosuch --- Institute of Zoology, Germany N'Goran Germain Kouamé --- Université d'Abobo‐Adjamé, Côte dIvoire Raffael Ernst --- Theodor‐Boveri‐Institute (Biocenter of the University), Germany Michael Veith --- Institute of Zoology, Germany

Based on genetic similarity of topotypic material from Phrynobatrachus alticola and P. tokba, we synonymise the first with the latter. We analysed tissue samples from almost the entire distributional range of P. tokba. We report six 16S rDNA haplotypes with...

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Cardioglossa liberiensis Barbour & Loveridge 1927 is a junior synonym of Phrynobatrachus fraterculus (Chabanaud 1921)

Item type: Journal Article • Journal: The Journal of the Herpetological Association of Africa • Authors: DavidC. Blackburn --- Harvard University, U.S.A.

In 1927, Barbour & Loveridge described two species of Cardioglossa based on seven specimens from Liberia: C. decorata (six specimens) and C. liberiensis. Cardioglossa decorata has long been recognized as a junior synonym of Phrynobatrachus fraterculus (Chabanaud 1921), which is...

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A redefinition of Afrixalus fulvovittatus (Cope, 1860) and Afrixalus vittiger (Peters, 1876) (Amphibia, Anura Hyperoliidae)

Item type: Journal Article • Journal: The Journal of the Herpetological Association of Africa • Authors: Martin Pickersgill --- , England

The validity of both Afrixalus fulvovittatus (Cope, 1860) and A. vittiger (Peters, 1876) as separate species is supported. Differences in their morphology, calls and tadpoles are presented, and the distributional ranges of both species are discussed. Morphological and vocal evidence...

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Quantification of the trade in Xenopus laevis from South Africa, with implications for biodiversity conservation

Item type: Journal Article • Journal: The Journal of the Herpetological Association of Africa • Authors: Ché Weldon --- North‐West University, South Africa AthertonL. De Villiers --- Western Cape Nature Conservation Board, South Africa LouisH. Du Preez --- North‐West University, South Africa

Harvesting wild amphibians for animal trade and consequent introductions of exotic species are considered threats to biodiversity. For this study, we evaluated the literature and unpublished data on Xenopus laevis exports from the Western Cape, South Africa, since the onset...

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Diet of a guild of geckos in a fragmented, human‐altered African rainforest

Item type: Journal Article • Journal: The Journal of the Herpetological Association of Africa • Authors: Lorenzo Rugiero --- F.I.Z.V. (Herpetology), Italy Luca Luiselli --- Centre of Environmental Studies, Italy EdemA. Eniang --- Biodiversity Preservation Center, Nigeria GodfreyC. Akani --- The Rivers State University of Science and Technology, Nigeria

The ecology of gekkonids occurring in African forests is poorly known. In this paper, we analyse the feeding habits of a guild of sympatric geckos at a forest‐plantation mosaic area in south‐eastern Nigeria. Faeces were collected on handling from Hemidactylus...

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Biodiversity and conservation of the reptiles of the mount Cameroon area

Item type: Journal Article • Journal: The Journal of the Herpetological Association of Africa • Authors: N. L. Gonwouo --- University of Yaoundé I Faculty of Science, Cameroon M. LeBreton --- Cameroon Biodiversity Conservation Society, Cameroon L. Chirio --- Muséum national d'Histoire naturelle, France I. Ineich --- Muséum national d'Histoire naturelle, France N. M. Tchamba --- WWF Cameroon Program Office, Cameroon P. Ngassam --- University of Yaoundé I Faculty of Science, Cameroon G. Dzikouk --- University of Yaoundé I, Cameroon J. L. Diffo --- CRESAR, Cameroon

A survey of reptiles was undertaken in the Mt. Cameroon region. We recorded 74 species of reptiles from 49 genera and 14 families. An additional 12 species have been found in the area but were not detected during our research...

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On the status of Simocephalus riggenbachi Sternfeld 1910

Item type: Journal Article • Journal: The Journal of the Herpetological Association of Africa • Authors: DonaldG. Broadley --- Research Associate, Natural History Museum of Zimbabwe,

Comparison of the type of Simocephalus riggenbachi Sternfeld 1910 with material from Nigeria and Ghana suggests that it is based on a peripheral variant of Mehela crossi (Boulenger 1895) and should therefore be placed in synonymy. Although the type locality...

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Revalidation of Phrynobatrachus maculiventris Guibé & Lamotte, 1958 and description of its aposematic coloured tadpole

Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Mark‐Oliver Rödel --- Humboldt University Berlin, Germany Laura Sandberger --- Humboldt University Berlin, Germany Néma‐Soua Loua --- Société des Mines de Fer de Guinée, Republic of Guinea Joseph Doumbia --- Université de Conakry, Annika Hillers --- Humboldt University Berlin, Germany

Phrynobatrachus maculiventris Guibé & Lamotte, 1958 is a valid species. Herein we clarify its taxonomic status, re‐describe it, and provide the first description of its tadpole. The tadpoles’ specific identity was assessed through DNA barcoding. Phrynobatrachus maculiventris adults differ from...

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Anuran amphibians in a rapidly changing environment – revisiting Lamto, Côte d'Ivoire, 40 years after the first herpetofaunal investigations

Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Patrick Joël Adeba --- University of Cocody, Philippe Kouassi --- University of Cocody, Mark-Oliver Rödel --- Leibniz Institute for Research on Evolution and Biodiversity at the Humboldt University Berlin, Germany

We reinvestigated the anuran amphibian fauna of the Lamto region in Central, Côte d'Ivoire, 40 years after this fauna was assessed for the first time. During this period, the region lost about 90% of the forest cover, resulting in an...

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Small, specialised and highly mobile? The tree-hole breeding frog, Phrynobatrachus guineensis, lacks fine-scale population structure

Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Laura Sandberger --- Leibniz Institute for Research on Evolution and Biodiversity at the Humboldt University Berlin, Germany Heike Feldhaar --- University of Osnabrück, Germany KathrinP. Lampert --- University of Bochum, Germany DunjaK. Lamatsch --- Austrian Academy of Sciences and Institute for Limnology, Austria Mark-Oliver Rödel --- Leibniz Institute for Research on Evolution and Biodiversity at the Humboldt University Berlin, Germany

Data on population dynamics and distribution are of primary interest to biologists because they reveal information about the species' ecology and evolution and are thus essential for conservation efforts. Patchily distributed species are especially interesting for conservation studies, because of...

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Medicinal and dietary uses of amphibians in Burkina Faso

Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Meike Mohneke --- Leibniz Institute for Research on Evolution and Biodiversity at the Humboldt University Berlin, Herpetology, Germany AbiodunB. Onadeko --- University of Lagos, Nigeria Mark-Oliver Rödel --- Leibniz Institute for Research on Evolution and Biodiversity at the Humboldt University Berlin, Herpetology, Germany

Herein we present ethnozoological data on the use of frogs by two ethnic groups (Mossi and Gourmanché) in Burkina Faso. These data are based on 129 interviews. Differences concerning consumption, applications as medical treatments, and cultural purposes were recorded and...

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Systematics of the poorly known treefrog Leptopelis fiziensis (Anura: Arthroleptidae), with a description of its call

Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Eli Greenbaum --- University of Texas at El Paso, USA Frank Portillo --- University of Texas at El Paso, USA Chifundera Kusamba --- Centre de Recherche en Sciences Naturelles, République Démocratique du Congo

Leptopelis fiziensis was described as a subspecies of L. modestus from specimens that were collected in 1956 in the region in and around Fizi, in present-day Democratic Republic of the Congo. We recently discovered L. fiziensis in transitional and montane...

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Description of the tadpoles of two Cameroonian frogs, Leptodactylodon axillaris and L. perreti (Anura: Arthroleptidae)

Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Deise Cruz --- California Academy of Sciences, USA AnneliseL. Dawson --- Harvard University, USA DavidC. Blackburn --- California Academy of Sciences, USA

We describe the tadpoles of two closely related frog species of the genus Leptodactylodon (family Arthroleptidae), L. axillaris and L. perreti, that are restricted to the mountains of Cameroon. Tadpoles were collected from near the type locality of each species...

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A new insight to the Hamiltonian systems with a finite number of spectral parameters

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Ekin Uğurlu --- Çankaya University, Turkey

In this article, we introduce a new first-order diﬀerential equation containing a finite number of spectral parameters and some results on the solutions of this equation. In particular, with the aid of the nested-circles approach we share a lower bound...

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Restoring breeding habitat for Giant Bullfrogs (Pyxicephalus adspersus) in South Africa

Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Ryan L. Thomas --- , , South Africa Lynne Owen-Smith --- , , South Africa Deanne C. Drake --- , , South Africa Graham J. Alexander --- , , South Africa

Habitat fragmentation and transformation arising from urbanisation are leading causes of frog population declines. Artificial wetlands are sometimes used in remediation to minimise biodiversity loss in urban landscapes, but little is known about the specific habitat requirements of frog species...

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Use and perceived effectiveness of complementary medicines for weight loss in adult women

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: J Bussicott --- University of Johannesburg, South Africa R Patel --- University of Johannesburg, South Africa J Pellow --- University of Johannesburg, South Africa RK Razlog --- University of Johannesburg, South Africa

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The relationship of a weight-efficacy lifestyle with anthropometric indices among middle-aged Iranian women

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Mahbobeh Kianfar --- Ahvaz Jundishapur University of Medical Sciences, Iran Poorandokht Afshari --- Ahvaz Jundishapur University of Medical Sciences, Iran Parvin Abedi --- Ahvaz Jundishapur University of Medical Sciences, Iran Mohammadhossein Haghighizadeh --- Ahvaz Jundishapur University of Medical Sciences, Iran

Background: Overweight or obese middle-aged women are at a greater risk of chronic diseases. This study aimed to evaluate the relationship between a weight-efficacy lifestyle and anthropometric indices in middle-aged women.

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Evaluating HIV policy: a gender analysis of the representation of women and men in UNAIDS HIV-prevention guidelines

Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Catherine Merriman --- Queen Mary University of London, United Kingdom Kevin Deane --- Open University, United Kingdom

Gender inequalities have long been recognised as one of the most significant factors influencing the dynamics of the HIV epidemic in sub-Saharan Africa (SSA). However, it remains unclear how men and women are discussed in HIV-prevention initiatives and if certain...

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Work-related need satisfaction and job crafting: Mediation of psychological empowerment in a Nigerian setting

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Lawrence O. Amazue --- University of Nigeria, Nigeria Ugochi P. Brown --- University of Nigeria, Nigeria Larry O. Awo --- , Nigeria

We examined the association between work need satisfaction (WNS) and job crafting (JC) dimensions (seeking challenges [SC], seeking resources [SR], and reducing demands [RD]), as well as the role of psychological empowerment (PE) in that relationship. Data on PE, WNS,...

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Who does better on life satisfaction and meaning in life? A Mixed-methods exploration of demographic characteristics and well-being in Ghana

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Angelina Wilson Fadiji --- University of Pretoria, South Africa Shingairai Chigeza --- University of Pretoria, South Africa Bontle Kgopa --- University of Pretoria, South Africa

The present study examined the relationship between the demographic characteristics of age, sex, religious practice, and standard of living with life satisfaction and meaning in life in a Ghanaian setting. Participants were 394 Ghanaian urban adults (female = 43.90; mean...

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What can hotels learn content wise from online travel agency websites?

Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Marit de Vries --- NHL Stenden University of Applied Sciences, The Netherlands

This research focuses on the specific information present on a hotel website and an online travel agency (OTA) hotel page, and to identify what information relates to which customer value. A checklist, based on the combination of OTA consumption values...

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Wind- and eddy-driven upwelling over submarine canyons inshore of the northern Agulhas Current

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: G Rautenbach --- Nelson Mandela University, South Africa J Hermes --- , South Africa I Halo --- , South Africa T Morris --- , South Africa J Veitch --- , South Africa

The iSimangaliso Wetland Park, located along the coastline of northern KwaZulu-Natal, hosts South Africa’s only subtropical coral reef system. Episodic upwelling events are observed inshore and at the heads of Diepgat, Leadsman and Leven canyons within the iSimangaliso Wetland Park...

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Some properties of the Walsh-Nörlund means

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Ushangi Goginava --- United Arab Emirates University, UAE Károly Nagy --- Institute of Mathematics and Computer Sciences, University of Nyíregyháza, Nyíregyháza, Hungary

In the present paper we give a necessary and suﬃcient condition on monotone weights, which guaranties the Nörlund means of Walsh-Fourier series converge in L 1 norm and CW norm. We also discuss the almost everywhere summability by Nörlund means...

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The W -weighted BT inverse

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: D.E. Ferreyra --- Universidad Nacional de Río Cuarto, Argentina N. Thome --- Instituto Universitario de Matemática Multidisciplinar, Universitat Politècnica de València, Spain C. Torigino --- Universidad Autónoma de Entre Ríos, Argentina

In this paper we extend the definition of BT inverse of square complex matrices to rectangular matrices. This new generalized inverse (called the W -weighted BT inverse) always exists and is unique. We investigate several characterizations of the W -weighted...

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Heartwood formation and its relationship with basic density and green moisture content of young small-leaf mahogany trees

Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Rizki Arisandi --- Universitas Gadjah Mada, Indonesia Sri Nugroho Marsoem --- Universitas Gadjah Mada, Indonesia Johanes Pramana Gentur Sutapa --- Universitas Gadjah Mada, Indonesia Ganis Lukmandaru --- Universitas Gadjah Mada, Indonesia

Swietenia mahogani (L.) Jacq. is one of Indonesia’s commercially valuable timbers. We investigated the time or age at which heartwood formation begins, and observed and determined whether the occurrence of heartwood formation was affected by age or diameter. The presence...

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More on cardinality bounds involving the weak Lindelöf degree

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: A. Bella --- University of Catania, Italy N. Carlson --- California Lutheran University, USA I. Gotchev --- Central Connecticut State University, USA

We give several new bounds for the cardinality of a Hausdorﬀ topological space X involving the weak Lindelöf degree ωL(X). In particular, we show that if X is extremally disconnected, then |X| ≤ 2 ωL (X)πχ(X)ψ(X), and if X...

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The weight distribution of hulls of binary codes from incidence matrices of complete graphs

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Khumbo Kumwenda --- Mzuzu University, Malawi Caleb Namondwe --- Mzuzu University, Malawi

We characterise the weights of all codewords of the hull of the binary code spanned by rows of an incidence matrix Bn of the complete graph Kn for n ≥ 4 and n even. Among others, we show that every...

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College students’ loneliness and problematic mobile phone use: Mediation by fear of missing out

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Qishan Zheng --- Lingnan University, China Sisi Liu --- Lingnan University, China Jianhong Zheng --- , China Maojin Gu --- Lingnan University, China Wuming He --- , China

This study examined the relationship between loneliness and problematic mobile phone use among university students, as well as the mediating role of fear of missing out in that relationship. College undergraduates (n = 233; female = 51.1%; first-year students =...

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Work engagement and job-related well-being: The moderation by public service work motivation

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Zhi Li --- Chongqing University, China Ni Chen --- Chongqing University, China

This study examined the relationship between civil servants’ work engagement and job-related well-being, and how it is moderated by work motivation. Participant were 496 Chinese civil servants (female = 41.7%; mean age = 40.5 years, SD = 14.14 years, 93.3%...

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Reproduction of the Western Marsh Harrier Circus aeruginosus at the El Maleh Dam reservoir in north-western Morocco

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Abdeslam Rihane --- , Morocco Abdelmottalib Nahli --- Hassan II Université Casablanca, Morocco Rhimou El Hamoumi --- Hassan II Université Casablanca, Morocco Mohamed Chlaida --- Hassan II Université Casablanca, Morocco

The reproduction of the Western Marsh Harrier Circus aeruginosus in submerged and dried up thickets of French tamarisk Tamarix gallica at El Maleh Dam reservoir, Benslimane Province, Morocco, was studied through monitoring nests in three successive years (2017–2019). Systematic field...

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Sunning in Yellow Bishops Euplectes capensis

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: H Dieter Oschadleus --- University of KwaZulu-Natal, South Africa Philipp H Boersch-Supan --- , United Kingdom

Two photographic records of a Yellow Bishop Euplectes capensis apparently sunning, at the West Coast National Park, South Africa, are described. There are very few records of sunning in weavers, and this is the first record for this species.

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Some further remarks on characterized subgroups generated by modular simple density

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Ayan Ghosh --- Jadavpur University, India

In this short note we have constructed an uncountable tower of characterized subgroups using the notion of modular simple density [8] which subsequently gives the solution of Problem 2.15 [7] in a more general setting.

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Some sharpened and refined versions of the q—Steffensen inequality

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Ksenija Smoljak Kalamir --- University of Zagreb, Croatia

Based on a known sharpened and refined versions of a classical Steffensen inequality, we derive new sharpened and refined versions of a q–Steffensen inequality. Next, we give weaker conditions for some already known generalizations of q–Steffensen’s inequality and for new...

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Embedding of a truncated vector lattice into its universal completion

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Karim Boulabiar --- Université de Tunis El Manar, Tunisia Rawaa Hajji --- Université de Tunis El Manar, Tunisia

We prove in a purely algebraic way that if L is an Archimedean truncated vector lattice then there exists a positive element e in the universal completion Lu of L such that the truncation of L is provided by meet...

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Exploring the prevalence of multiple forms of malnutrition in children 6–18 years living in the Eastern Cape, South Africa

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Gugulethu T Moyo --- Texas Tech University, United States Abdulkadir A Egal --- Somali National University, Somalia Wilna Oldewage-Theron --- Texas Tech University, United States

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Nutritional interventions and outcomes of children with short bowel syndrome in a tertiary hospital setting in South Africa

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: BD Saayman --- Red Cross War Memorial Children’s Hospital, South Africa AJW Millar --- University of Cape Town and Red Cross War Memorial Children’s Hospital, South Africa E van Niekerk --- Stellenbosch University, South Africa

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The qualitative methodology: Preparedness and experiences of journal reviewers

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Salomé Elizabeth Scholtz --- North-West University, South Africa

Reviewers are the gatekeepers of knowledge dissemination and promote the scientific validity of research. However, the literature indicates that authors often receive questionable feedback on qualitative manuscripts. This qualitative descriptive study sought to explore the preparedness and experiences of reviewers...

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Attachment and general well-being in breast cancer patients: Mediation of body esteem and social support

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Li Yanyan --- Southwest University, China Chen Xu --- Southwest University, China

This study aimed to explore the mediation of body esteem and social support in the relationship between attachment and general well-being in breast cancer patients. We collected data from 150 women with breast cancer and 150 healthy women. Employing bootstrap...

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Biological and life-history parameters for Labeo rosae Steindachner, 1894 and Oreochromis mossambicus (Peters, 1852) from Flag Boshielo Dam, Olifants River, South Africa

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: HA Hlungwani --- University of Limpopo, South Africa SM Marr --- University of Limpopo, South Africa OLF Weyl --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa JR Sara --- University of Limpopo, South Africa

Inland fisheries contribute towards food security for rural communities living close to large aquatic systems. However, sustainable inland fisheries rely on accurate biological information for the target species at the proposed fishery location. In this study, the biological information for...

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Sensitivity simulation of sea surface temperature variability in coastal waters off East Africa in relation to the Indian Ocean Dipole

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MC Manyilizu --- The University of Dodoma, Tanzania

East African coastal waters in the tropical western Indian Ocean experience strong seasonality which varies yearly, leading to the establishment of a prominent interannual Indian Ocean Dipole (IOD). This has a significant influence on regional and global socio-economic, climatic and...

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On common index divisor and monogenity of certain number fields defined by trinomials X ⁶ + AX + B

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Lhoussain El Fadil --- Sidi mohamed ben Abdellah University, Morocco

For a number field K defined by a trinomial F (x) = x 6 + ax + b ∈ ℤ[x], Jakhar and Kumar gave some necessary conditions on a and b, which guarantee the non-monogenity of K [25]. In this...

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Features of Turner syndrome in patients managed at the adult endocrinology clinic, Steve Biko Academic Hospital

Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: M. Noeth --- University of Pretoria, South Africa T. Kemp --- University of Pretoria, South Africa T. Botha --- University of Pretoria, South Africa

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L ω 1 -invariant weighted Orlicz spaces

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: AliReza Bagheri Salec --- University of Qom, Iran Seyyed Mohammad Tabatabaie --- University of Qom, Iran

In this paper, we prove that σ-compactness of a locally compact group G is a necessary condition for the weighted Orlicz space to be a convolution algebra, and for a class of Orlicz spaces we give an equivalent condition. Also,...

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On finite Sylow tower and σ-tower groups

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Jinzhuan Cai --- Hainan University, P.R. China Inna N. Safonova --- Belarusian State University, Belarus Alexander N. Skiba --- Francisk Skorina Gomel State University, Belarus Zhigang Wang --- Hainan University,

In this paper, G is a finite group and σ a partition of the set of all primes ℙ, that is, σ = {σ i | i ∈ I}, where ℙ = ⋃ i∈I σ i and σ i ∩...

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Anuran diversity in a West African Valley

Item type: Journal Article • Journal: African Zoology • Authors: Houénafa Chrysostome Aimé Gansa --- Unit of Aquaculture Research and Fisheries Management (URAGeP), Laboratory of Fisheries and Animal Sciences (LaSAH), National University of Agriculture (UNA), Republic of Benin Hyppolite Agadjihouèdé --- University of Abomey-Calavi, Republic of Benin Mahugnon Benjamin Hounkanrin --- Unit of Aquaculture Research and Fisheries Management (URAGeP), Laboratory of Fisheries and Animal Sciences (LaSAH), National University of Agriculture (UNA), Republic of Benin

Anurans are subject to strong anthropic pressures in Benin, as in most of the West African countries, due to their socio-economic and environmental importance. To protect these organisms and to gather basic knowledge, an anuran biodiversity study was conducted in...

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Sense of power and online trolling among college students: Mediating effects of self-esteem and moral disengagement

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Yiping Zhou --- Sichuan Normal University, China Fang Li --- Sichuan Normal University, China Qinyao Wang --- Hubei University of Technology, China Jiawei Gao --- Sichuan Normal University, China

This study investigated the relationship between the sense of power and online trolling among college students and the role of self-esteem and moral disengagement in that relationship. Participants were 1 268 college students (females = 61.6%, mean age = 19.94,...

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Double-edged sword effect of servant leadership on employee creativity: Mediation–moderation analysis

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Hui Wang --- Xiangtan University, China Xueshuang Chen --- Xiangtan University, China Jian Zhu --- Xiangtan University, China Xiangqing Li --- Xiangtan University, China

Drawing on social information processing theory (SIPT), this study examines the mediating role of creative self-efficacy and follower dependency on the relationship between servant leadership and employee creativity, focusing on task uncertainty moderation. Data was collected from 338 employees in...

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Monogenean parasites of Pseudocrenilabrus philander (Weber, 1897) (Teleostei: Cichlidae) in the middle Limpopo River basin, southern Africa

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: I Walter --- University of Limpopo, South Africa I Přikrylová --- University of Limpopo, South Africa M Barson --- University of Botswana, Botswana WJ Luus-Powell --- University of Limpopo, South Africa

The study aimed to isolate and describe the monogenean parasites of the southern mouthbrooder, Pseudocrenilabrus philander (Weber, 1897), an endemic fish species of the Limpopo River basin in southern Africa. During summer and winter between November 2013 and August 2014,...

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Herbicide trials on Campuloclinium macrocephalum (Asteraceae) during adverse conditions reveal incompatibility with biocontrol and a narrow window of opportunity for chemical control

Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: JM Goodall --- University of the Witwatersrand, South Africa ETF Witkowski --- University of the Witwatersrand, South Africa

Herbicide trials on pompom weed Campuloclinium macrocephalum (Less.) DC. (Asteraceae) were carried out in grasslands with xeric and hydric soils, at sites in Gauteng, South Africa, from 2005 to 2008. The rust fungus Puccinia eupatorii Dietel, an established self-perpetuating biocontrol...

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A note on J -spaces and relatively connected subsets

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Simo S. Mthethwa --- University of KwaZulu-Natal, South Africa Ali Taherifar --- Yasouj University, Iran

In this note we present an investigation of J -spaces and other types of spaces related to J -spaces. We characterise these spaces using the notion of relatively connected subsets. For a completely regular J -space X, we give a...

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On set star-Menger spaces

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Sumit Singh --- University of Delhi, India

In this paper, we prove that the product of a set star-Menger space with a compact space is a rectangular set star-Menger. We also provide an example of Tychonoff pesudocompact set star-Menger space which is not set strongly star-Menger. The...

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On the index divisors and monogenity of number fields defined by x ⁵ + ax ³ + b

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Lhoussain El Fadil --- Sidi Mohamed Ben Abdellah University, Morocco

The main goal of this paper is to provide a complete answer to the Problem 22 of Narkiewicz[24] for any quintic number field K generated by a complex root α of a monic irreducible trinomial F(x) = x 5 +...

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Gender disparity in livelihood diversification among rural households in Osogbo Agricultural Development Programme (ADP) Zone of Osun State, Nigeria

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Olaide K. Akintunde --- , Nigeria Khadijat O. Olanrewaju --- , Nigeria Timothy O. Agboola --- , Nigeria Ahmed O. Busari --- , Nigeria

Livelihood diversification is a coping strategy that functions as a cushioning effect owing to dwindling income from agriculture. This study examined the significant differences in income between males and females before and after livelihood diversification. The multi-stage sampling procedure was...

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Pay satisfaction and work–life balance among Nigerian bank employees: The roles of psychological empowerment and gender

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Gabriel C. Kanu --- University of Nigeria, Nigeria Ijeoma C. Odinko --- University of Nigeria, Nigeria Ikechukwu V. N. Ujoatuonu --- University of Nigeria, Nigeria

This study examined the roles of psychological empowerment and gender in the relationship between pay satisfaction and work–life balance among bank employees. In total, 393 Nigerian bank employees participated in the study (female (49.36%; mean age = 32.07, SD =...

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How college students’ social media information overload affects sleep quality: The mediating effect of social fatigue and irrational procrastination

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Jing Li --- Zhejiang University, China Tingting Gao --- Zhejiang University, China Yinghua Ye --- Zhejiang University, China

Information overload is a pervasive phenomenon in the information age and has a negative impact on personal psychological experiences and behavioural performance. The relationship between WeChat information overload and sleep quality was examined, as well as the mediating effects of...

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Kindergarten teachers’ objective career success and subjective well-being: The mediating role of professional identity

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Xinli Zhai --- Huazhong University of Science and Technology, China Li Zhang --- Guangzhou Teachers College of Foreign Languages and Arts, China Lingyuan Li --- Henan University, China Lin Yang --- , China Pingzhi Ye --- Guangzhou University, China

This study explored the relationship between objective career success and subjective well-being in kindergarten teachers and the mediating role of professional identity in that relationship. The study sample comprised 5 385 kindergarten teachers from Guangdong province, China (females = 99.1%,...

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Homophilic social networks and school adjustment among primary school pupils: Results and implications from a Zimbabwean study

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Edwin Simbarashe Mpofu --- University of Zimbabwe, Zimbabwe Maximus Monaheng Sefotho --- University of Johannesburg, South Africa

Social network patterns were explored among Zimbabwean rural school pupils to determine their peer preferences and statuses. Participants were 173 school pupils attending grades 4–6 in a rural school in Zimbabwe (76 boys; 97 girls; age range 9 years to...

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Mapping fine-scale demersal trawl effort for application in ecosystem assessment and spatial planning

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: JC Currie --- South African National Biodiversity Institute (SANBI), South Africa LR Harris --- Institute for Coastal and Marine Research, Nelson Mandela University, South Africa LJ Atkinson --- South African Environmental Observation Network (SAEON), South Africa TP Fairweather --- Fisheries and the Environment (DFFE), South Africa KJ Sink --- South African National Biodiversity Institute (SANBI), South Africa

Fine-scale maps of fishing activity are valuable information layers for fisheries management, assessments of biodiversity impacts and marine spatial planning. Our aim was to develop an accurate map of demersal trawling intensity in South Africa and to demonstrate its utility...

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Acoustic telemetry reveals the drivers behind estuary–sea connectivity of an important estuarine-dependent fishery species, Pomadasys commersonnii, in the Breede Estuary, South Africa

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: BA Ziko --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa TS Murray --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa TF Næsje --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa JD Filmalter --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa PD Cowley --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa

The spotted grunter Pomadasys commersonnii is an important estuarine-dependent fishery species known to spawn along the east coast (KwaZulu-Natal Province) of South Africa. However, recent evidence suggests that this species also spawns along the southwest coast in the Western Cape...

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A new anuran genus from the fossil sites of Langebaanweg and Cooper’s Cave, South Africa

Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Thalassa Matthews --- Iziko Museums of South Africa, South Africa Christine Steininger --- University of the Witwatersrand, South Africa

Enigmatic frog ilia were recovered from two geographically and temporally disparate fossil sites in South Africa, namely the Early Pliocene (5.1 Ma) fossil site of Langebaanweg (south-western Cape), and Cooper’s Cave D (Northern province), which dates to around 1.38 Ma...

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Supported approach spaces

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: E. Colebunders --- Vrije Universiteit Brussel, België R. Lowen --- Universiteit Antwerpen, België

In this paper we work in the category of approach spaces with contractions [14], the objects of which are sets endowed with a numerical distance between sets and points. Approach spaces are to be considered a simultaneous generalization of both...

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The influence of TI-property and subnormality of self-centralizing subgroups of non-prime-power order on the structure of finite groups

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Jiangtao Shi --- Yantai University, P.R. China Na Li --- Beijing Jiaotong University, P.R. China

We obtain a complete classification of the structure of finite groups in which every self-centralizing subgroup of non-prime-power order is a TI-subgroup or a subnormal subgroup.

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Community involvement in the mass capture of Red-billed Queleas Quelea quelea adjacent to protected areas: the case of Chemba District, Dodoma, Tanzania

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Naza Emanuel Mmbaga --- The University of Dodoma, Tanzania Richard John Mongi --- The University of Dodoma, Tanzania Mhuji Bukheti Kilonzo --- The University of Dodoma, Tanzania Leonard Kamanga Katalambula --- The University of Dodoma, Tanzania

The mass capture and utilisation of Red-billed Queleas Quelea quelea as a source of food is practiced in different African countries. The current study sought information on the trapping methods and techniques used by local communities in Chemba District, Tanzania,...

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‘Yo Dumbfucks!’: Problematising “Transgressive” White Humour and the Use of Blackface in the Artworks of South African Visual Artist Anton Kannemeyer

Item type: Journal Article • Journal: Eastern African Literary and Cultural Studies • Authors: Sharlene Khan --- University of the Witwatersrand, South Africa

Since the early 1990s, blackface has seen a resurgence in South Africa. In 2010, Pappa in Afrika, the artwork of White Afrikaner artist Anton Kannemeyer elicited public criticism. Interrogating Kannemeyer’s Pappa in Afrika, this paper questions assumptions of blackface’s parodic...

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Effect of group cognitive behavioural therapy on self-efficacy and anthropometric indices among overweight and obese postpartum women

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Arezo Jamshidi --- Ahvaz Jundishapur University of Medical Sciences, Iran Parvin Abedi --- Ahvaz Jundishapur University of Medical Sciences, Iran Najmeh Hamid --- Shahid Chamran University of Ahvaz, Iran Mohammadhossein Haghighizadeh --- School of Health, Iran

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Coping strategies and mental health of adolescents impacted by parental HIV and AIDS in rural South Africa

Item type: Journal Article • Journal: Journal of Child & Adolescent Mental Health • Authors: Comfort Asanbe --- College of Staten Island, City University of New York, USA Maretha Visser --- University of Pretoria, South Africa Anne-Gloria Moleko --- University of Pretoria, South Africa Catherine Makwakwa --- , South Africa

Objective: The study explored whether orphanhood status as well as coping strategies predicted mental health outcomes in orphans and vulnerable adolescents who participated in an NGO-supported programme in rural South Africa.

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Teachers’ views and experiences of student mental health and well-being programmes: A systematic review

Item type: Journal Article • Journal: Journal of Child & Adolescent Mental Health • Authors: John Goodwin --- University College Cork, Ireland Laura Behan --- , Ireland Niamh O’Brien --- South East Technological University, Ireland

Background: In schools, teachers are often tasked with implementing mental health and well-being programmes. However, little is known about teachers’ views on and experiences with implementing these programmes.

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The use of dolphins at Melka Excelsior Dolphin and Wildlife Resort in Lovina, Bali, Indonesia: a study of visitor experiences and ethical implications through netnographic research

Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Rodney Westerlaken --- NHL Stenden University of Applied Sciences, The Netherlands

The closure of Melka Excelsior Dolphin and Wildlife Resort in Lovina, Bali, in Indonesia was prompted by the confiscation of its dolphins and mounting pressure from animal welfare advocates, marking a pivotal moment in the discourse surrounding the use of...

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Humble leadership and follower strengths use: Leader-member exchange as a mediator and role overload as a moderator

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: --- School of Economics and Management, North China Electric Power University, China --- School of Economics and Management, North China Electric Power University, China --- School of Economics and Management, North China Electric Power University, China

Based on the conservation of resources (COR) theory, this study explores the mediating effect of leader-member exchange (LMX) and the moderating effect of role overload in the relationship between humble leadership and follower strengths use. We collected data from 230...

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Ethnic obligation and employee well-being: The moderating role of relative deprivation

Item type: Journal Article • Journal: Africa Journal of Management • Authors: Baniyelme D. Zoogah --- McMaster University, Canada William Y. Degbey --- University of Vaasa, Finland Eleanor J. K. Akoto --- Central University, Ghana

In this paper, we propose that ethnic obligation is a norm that regulates the obligations of ethnic group members to each other and then examine its effects on well-being in a context where ethnicity is salient. Using a strain theory...

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Effect of rotational harvesting on the size composition of Cape rock oysters Striostrea margaritacea on the east coast of South Africa

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: E Steyn --- Oceanographic Research Institute, South Africa JC Groeneveld --- Oceanographic Research Institute, South Africa J Santos --- Norwegian College of Fishery Science, Uit – The Arctic University of Norway, Norway

A commercial fishery for the Cape rock oyster Striostrea margaritacea along the north coast of KwaZulu-Natal, South Africa (western Indian Ocean), follows a 4-year rotational cycle, with each harvest year followed by 3 fallow years across four harvest zones. We...

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Marine macroalgae of the Agulhas Marine Province of South Africa: biodiversity, exploitation and potential for aquaculture

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: JJ Bolton --- University of Cape Town, South Africa CD McQuaid --- Rhodes University, South Africa

The Agulhas Marine Province (AMP) extends along most of the south coast of South Africa, from Cape Agulhas to the vicinity of the Mbashe River mouth in the Eastern Cape Province, and has its own distinctive warm-temperate seaweed flora, with...

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Plumage dimorphism and moult patterns of weaverbirds – a review

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: H-Dieter Oschadleus --- University of KwaZulu-Natal, South Africa Staffan Andersson --- University of Gothenburg, Sweden

The colourful plumages of weaverbirds (family Ploceidae, with 118 species recognised) provide a well-known and in part iconic showcase of sexual selection, with widespread sexual dimorphism (93 species) as well as seasonal dimorphism (62 species). The tremendous diversity in both...

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A demonstration of the value of recapture data for informing moult phenology models for avian species with imperfect moult data

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Philipp H Boersch-Supan --- , United Kingdom Alan Tristram Kenneth Lee --- University of Cape Town, South Africa Hans-Dieter Oschadleus --- University of KwaZulu-Natal, South Africa

The Underhill–Zucchini model has revolutionised the study of moult in the context of birds’ annual cycles, but, as for all statistical models, inferences are vulnerable to violations of model assumptions. In particular, the standard Underhill–Zucchini models for moult phenology are...

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Effects of succinic acid impregnation on physical properties of sapwood and heartwood from plantation-grown short-rotation teak

Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Sarah Augustina --- National Research and Innovation Agency (BRIN), Indonesia Teguh Darmawan --- National Research and Innovation Agency (BRIN), Indonesia Sudarmanto --- National Research and Innovation Agency (BRIN), Indonesia Narto Narto --- National Research and Innovation Agency (BRIN), Indonesia Adik Bahanawan --- National Research and Innovation Agency (BRIN), Indonesia Danang S Adi --- National Research and Innovation Agency (BRIN), Indonesia Dimas Triwibowo --- National Research and Innovation Agency (BRIN), Indonesia Yusup Amin --- National Research and Innovation Agency (BRIN), Indonesia Imran A Sofianto --- National Research and Innovation Agency (BRIN), Indonesia Prabu S Sejati --- National Research and Innovation Agency (BRIN), Indonesia Wahyu Dwianto --- National Research and Innovation Agency (BRIN), Indonesia Witjaksono --- National Research and Innovation Agency, Indonesia Ragil Widyorini --- Universitas Gadjah Mada, Philippe Gérardin --- Université de Lorraine, France Sari Delviana Marbun --- National Research and Innovation Agency (BRIN), Indonesia

The aim of this study was to improve the properties of 15-year-old short rotation teak wood using a succinic acid (SA) treatment without excessively increasing the weight gain. The samples were classified as sapwood (SW) and heartwood (HW). Samples were...

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Migrant arrival infrastructures and their impact on Zimbabweans’ mobility and integration in South Africa

Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Shingirai Nyakabawu --- University of the Western Cape, South Africa

This study argues that arrival infrastructures play a crucial role in shaping the mobility and integration of Zimbabwean migrants in South Africa. By examining the experiences of migrants with access to these infrastructures and those without, the research explores the...

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The effect of crop rotation on soil health in the north-western Free State region, South Africa

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Melanie de Bruyn --- University of the Free State, South Africa Andre Nel --- University of the Free State, South Africa Johan van Niekerk --- Independent research agronomist,

Soil health is an important aspect of sustainable agriculture. By maintaining soil health, crop yields can be consistently successful without negatively affecting the environment. The objective of this study was to evaluate the effects that different cropping systems have on...

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A note on some classes of operators on C(K,X)

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Ioana Ghenciu --- University of Wisconsin-River Falls, USA Roxana Popescu --- University of Pittsburgh, USA

Suppose X and Y are Banach spaces, K is a compact Hausdorﬀ space, Σ is the σ-algebra of Borel subsets of K , C (K, X) is the Banach space of all continuous X-valued functions (with the supremum norm), and...

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Truncated vector lattices: A Maeda-Ogasawara type representation

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Karim Boulabiar --- Université de Tunis El Manar, Tunisia Rawaa Hajji --- Université de Tunis El Manar, Tunisia

Let L be a truncated Archimedean vector lattice whose truncation is denoted by *. In a recent paper, we proved that there exists a locally compact Hausdorﬀ space X such that L is a lattice isomorphic with a truncated vector...

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Remarks on weak compactness criteria in variable exponent Lebesgue spaces

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Francisco L. Hernández --- Complutense University of Madrid, Spain César Ruiz --- Complutense University of Madrid, Spain Mauro Sanchiz --- Complutense University of Madrid, Spain

We give two weak compactness Andô type criteria in variable exponent Lebesgue spaces Lp (·) (Ω) on infinite measures. This extends some results of [13] given in the case of finite measures. Spaces Lp (·) (Ω) on infinite measures are...

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Stone-Weierstrass approximation revisited

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Anatoly G. Kusraev --- Southern Mathematical Institute of the Vladikavkaz Science Center of the Russian Academy of Sciences, Russia Semën S. Kutateladze --- Sobolev Institute of Mathematics, Siberian Branch of the Russian Academy of Sciences, Russia

The aim of the present article is to extend the Stone-Weierstrass theorem to functions ranging in a lattice normed space and admitting order rather than topological approximation. We proceed with the machinery of Boolean-valued transfer from lattice normed space to...

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Weak and strong type inequalities for Orlicz spaces

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Louis Labuschagne --- , South Africa

We revisit the generalisation of Calderon’s Transfer Principle as espoused in [7]. This principle is used to generate weak type maximal inequalities for ergodic operators in the setting of σ-compact locally compact Hausdorﬀ groups acting measure-preservingly on σ-finite measure spaces...

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Does participation in innovation platform improve welfare? Insights from smallholder maize farmers in Ghana

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Eric Asiamah Yeboah --- , Ghana Kelvin Balcombe --- University of Reading, UK Bright Owusu Asante --- Kwame Nkrumah University of Science and Technology (KNUST), Ghana Stephen Prah --- Kwame Nkrumah University of Science and Technology (KNUST), Ghana Robert Aidoo --- Kwame Nkrumah University of Science and Technology (KNUST), Ghana

This paper investigates the impact of participation in innovation platforms (IPs) on smallholder maize farmers’ welfare in the Brong Ahafo region of Ghana using data collected from 477 rural farm households. We employed the doubly robust inverse probability weighted regression...

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Estimating the impact of digital technologies on government operations, business operations and general welfare: The case of South Africa

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Alex Boakye --- Institute for Social Development, South Africa

The shift towards digitalization is fundamentally transforming societies and changing lives. Meanwhile, many African countries are lagging behind on the dividends of accelerated digital technologies to address their developmental challenges. This is partly because of the dearth of evidence demonstrating...

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Knowledge, attitudes and awareness regarding donor breast milk: a cross-sectional study of mothers in a high HIV-prevalent area

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Hadebe Thobeka Zamahlubi --- University of KwaZulu-Natal, South Africa Kimesh L Naidoo --- University of KwaZulu-Natal, South Africa Fharnisa Khan --- University of KwaZulu-Natal, South Africa Refiloe Masekela --- University of KwaZulu-Natal, South Africa

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Non-nutritive sweeteners: consumer awareness and inclusion in food and beverage products in South Africa

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Shakun Naicker --- Durban University of Technology, South Africa Ashika Naicker --- Durban University of Technology, South Africa Evonne Singh --- Durban University of Technology, South Africa

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‘Bahari Imekufa, The Sea is Dead’: Local Perceptions of Ocean Health and Ocean Wealth among Fishers on the Kenyan Coast

Item type: Journal Article • Journal: Eastern African Literary and Cultural Studies • Authors: Jacky Kosgei --- WiSER, University of the Witwatersrand, South Africa

Using narratives that I recorded in June/July 2021 on Kenya’s south coast with fishers belonging to three different generations, this paper provides insights into local articulations of changes that have happened in the sea over time. These changes — which...

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Silence, the Unsaid and the Unsayable in Yvonne Vera’s The Stone Virgins

Item type: Journal Article • Journal: Eastern African Literary and Cultural Studies • Authors: Nicklas Hållén --- Karlstad University and Uppsala University,

The primary aim of this article is to think through how silence can be considered as generating meaning in literary prose. For this purpose, the article focuses on Zimbabwean author Yvonne Vera’s last novel, The Stone Virgins (2002a), which has...

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The psychological well-being of schoolteachers in South Africa: A critical review

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Anneke Fourie --- North-West University, South Africa Werner de Klerk --- North-West University, South Africa

Teaching is a stressful occupation associated with various challenges that may adversely affect schoolteachers’ psychological well-being (PWB) and the provision of quality basic education. The nature and effects of teacher PWB may depend on their work context. This critical review...

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Religiosity and well-being among Nigerians: Exploring the mediating role of fatalism

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Aaron Adibe Agbo --- University of Nigeria, Nigeria Christopher Ndubisi Ngwu --- University of Nigeria, Nigeria Nkechi Gloria Onah --- University of Nigeria, Nigeria Ifeanyi E. Iwundu --- Institute of African Studies, University of Nigeria, Nigeria

The current study examined how intrinsic and extrinsic religious orientations relate to hedonic and eudaimonic well-being and the mediating role of the dimensions of fatalism among Nigerians. Data were obtained from a survey of young Nigerians aged between 17 and...

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Optimal control and feedback control for nonlinear impulsive evolutionary equations

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Bin Yin --- Guangxi Minzu University, P.R. China Biao Zeng --- Guangxi Minzu University, P.R. China

The aim of this paper is to study the existence, optimal control and feedback control for a class of nonlinear impulsive evolution equations involving weakly continuous operators. We first obtain the existence result of the evolution equation without impulse in...

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$Well-posedness of fractional differential equations with finite delay in complex Banach spaces$

Well-posedness of fractional differential equations with finite delay in complex Banach spaces

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Shangquan Bu --- Tsinghua University, China Gang Cai --- Chongqing Normal University, China

We study the well-posedness of the fractional diﬀerential equations with finite delay: Dαu(t) + BDβu(t) = Au(t) + Fut + f(t), (0 ≤ t ≤ 2π) on Lebesgue-Bochner spaces and periodic Besov spaces , where A and B are closed...

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A note on partial-A-isometries and some applications

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Mohamed Amine Aouichaoui --- Institute of Preparatory Studies in Engineering of Monastir Tunisia, University of Monastir, Tunisia

In this paper, the concepts of partial isometry and A-isometry are generalized. The inspiration for our investigation comes from [4, 10, 20, 27, 28, 29].

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Concircularly semi-symmetric metric connection

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Miroslav D. Maksimović --- University of Pri&scaron;tina in Kosovska Mitrovica, Serbia Milo&scaron; Z. Petrović --- University of Ni&scaron;, Serbia Nenad O. Vesić --- Mathematical Institute of Serbian Academy of Sciences and Arts, University of Belgrade, Milan Lj. Zlatanović --- University of Ni&scaron;, Serbia

Results on a concircularly semi-symmetric metric connection on a Riemannian manifold are presented. Six linearly independent curvature tensors with respect to this non-symmetric linear connection are studied, and the tensors coincident with the Weyl projective curvature tensor and the concircular...

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On the extension of the Voronin universality theorem for the Riemann zeta-function

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Antanas Laurinčikas --- Institute of Mathematics, Faculty of Mathematics and Informatics, Vilnius University, Lithuania

In the paper, we prove a general universality theorem for the Riemann zeta-function ζ (s) on approximation of a class of analytic functions by generalized shifts ζ (s + ia(τ)). Here a(τ) is a real-valued continuous increasing to +∞ function,...

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From disabled to differently abled: A psychofortological perspective on first-year students living with disability

Item type: Journal Article • Journal: Indo-Pacific Journal of Phenomenology • Authors: Annemarike de Beer --- University of the Free State, South Africa Luzelle Naudé --- University of the Free State, South Africa Lindi Nel --- University of the Free State, South Africa

The aim of this study was to conduct an interpretative phenomenological analysis exploring the experiences of differently abled first-year students from a psychofortological perspective. Ryff’s psychological well-being model was used as a theoretical underpinning. Through the course of an academic...

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Of vaccines, biopower, subjects and governmentality: an ethnographic enquiry into the Zimbabwean Covid-19 vaccination drive

Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Talent Moyo --- Midlands State University, Zimbabwe

The article highlights the politics of the Covid-19 vaccination drive in Zimbabwe. It interrogates questions of individual agency and institutional power in the administration of the vaccine. It is framed within Foucauldian scholarship, particularly that concerning the role of biopower,...

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Evaluating the efficacy of a school-based Finnish Gutsy Go programme in enhancing adolescents’ positive mental health, experience of social inclusion, and social competence

Item type: Journal Article • Journal: Journal of Child & Adolescent Mental Health • Authors: Hanna Ahrnberg --- , Finland Kaija Appelqvist-Schmidlechner --- , Finland Pekka Mustonen --- , Finland Sari Fröjd --- Tampere University, Finland Katja Aktan-Collan --- , Finland

Background: The Finnish Gutsy Go programme is a positive youth development intervention designed to enhance adolescents’ psychosocial well-being by enabling eighth-grade students to develop and execute good deeds within the community.

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On the difference graph of power graphs of finite groups

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Jitender Kumar --- Birla Institute of Technology and Science Pilani, India Ramesh Prasad Panda --- VIT-AP University, India Parveen --- Birla Institute of Technology and Science Pilani, India

The power graph of a finite group G is the simple undirected graph with vertex set G whose two vertices are adjacent if one is a power of the other. The enhanced power graph of a finite group G is...

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Oscillation results for nonlinear weakly canonical fourth-order delay differential equations via canonical transform

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Natarajan Prabaharan --- Engineering College, Kavaraipettai, India Ethiraju Thandapani --- University of Madras, India Ercan Tunç --- Tokat Gaziosmanpaşa University, Turkey

By using canonical transformation technique, we convert the nonlinear weakly canonical fourth-order delay diﬀerential equations into strongly canonical equations. Then we apply oscillation results for canonical equations to get similar results for the studied equation. The significance and novelty of...

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Development of new assessment approach: a macroinvertebrates-based biotic scoring system to assess the health of riverine ecosystems in the Sahel area in Burkina Faso (West Africa)

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: I Kaboré --- Université Joseph KI-ZERBO, Burkina Faso L Sawadogo --- Université Joseph KI-ZERBO, Burkina Faso V Bancé --- Université Joseph KI-ZERBO, Burkina Faso L Tampo --- University of Kara, Togo S Sanogo --- Université NAZI BONY de Bobo-Dioulasso, Burkina Faso A Ouéda --- Université Joseph KI-ZERBO, Burkina Faso O Moog --- University of Natural Resources and Life Sciences, Austria AH Melcher --- University of Natural Resources and Life Sciences, Austria

To address ongoing threats from human pressures and climate changes, water managers and users require a visual tool that provides accurate information about the health of waterbodies for decision making. However, there is a lack of less sophisticated methods, such...

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Zooplankton composition following an artificial mouth breaching event in Lake St Lucia, South Africa

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: NK Carrasco --- University of KwaZulu-Natal, South Africa S Ramdass --- University of KwaZulu-Natal, South Africa

Lake St Lucia is one of the most important estuarine systems in South Africa, but the long history of anthropogenic intervention has threatened its integrity. With the exception of sporadic overtopping events and periodic marine connectivity via the uMfolozi River,...

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Subjective well-being, social network, financial stability and living environment of the displaced community: Implications for an inclusive society

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: R. M. Suresh --- Universiti Malaya, V. G. R. Chandran --- Universiti Malaya, Sonia Kumari Selvarajan --- Universiti Malaya,

This study examines the state of subjective well-being (SWB), living and social environment of the displaced community in Putrajaya, Malaysia. The study also explores the determinants of SWB through a survey of 141 households and interviews. The results show that...

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Internet addiction and suicidal ideation in Chinese college students: The role of meaning in life and social support

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Liling Wang --- Soochow University, China Junjun Fu --- Northwest Normal University, China Tao Wang --- Northwest Normal University, China I-Jun Chen --- Soochow University, China

Worldwide, internet addiction and suicidal ideation have become serious issues in public health. However, little is known about the underlying mechanisms in the relationship between internet addiction and suicidal ideation. This study aimed to investigate the relationship between internet addiction...

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Sense of belonging and academic persistence among undergraduate university students: The chain mediation effect of emotional and academic adjustment

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Bongani V. Mtshweni --- University of South Africa, South Africa

This study examined the relationship between sense of belonging and academic persistence, as mediated by emotional and academic adjustment. A total of 955 South African undergraduate students were participants (female = 71.7%; black = 44.8%; mean age = 27.80 years,...

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Investigating stimulating factors for customer booking intentions on brand websites

Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Marit de Vries --- NHL Stenden University of Applied Sciences, The Netherlands Niels Klein Poelhuis --- NHL Stenden University of Applied Sciences, The Netherlands

Customers have ample opportunities regarding channels to use to book a hotel room: offline and online. In the online world, the options are using the hotel’s website, referred to as the brand website, or third party internet sites like online...

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Does sugar taxation on sugar-sweetened beverages alter purchasing behaviour of South African consumers? Perspectives of dietitians and key industry role-players

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Yolande Smit --- Stellenbosch University, South Africa Zarina Ebrahim --- Stellenbosch University, South Africa Maritha Marais --- Stellenbosch University, South Africa Daan Nel --- Centre for Statistical Consultation, Stellenbosch University, South Africa Nelene Koen --- Stellenbosch University, South Africa

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Developing and validating a scale to measure trauma-informed practices used by teachers in inclusive schools in Ghana and the United Arab Emirates

Item type: Journal Article • Journal: Journal of Child & Adolescent Mental Health • Authors: Maxwell Peprah Opoku --- United Arab Emirates University, United Arab Emirates Hala Elhoweris --- United Arab Emirates University, United Arab Emirates Ashraf Moustafa --- United Arab Emirates University, United Arab Emirates Daniel Miezah --- University of Cape Coast, Ghana Haseena Shah --- United Arab Emirates University, United Arab Emirates Ghadah Al Murshidi --- United Arab Emirates University, United Arab Emirates

Research on trauma-informed practices is common in Western countries, but non-Western countries have made minimal contributions in this regard. This study aimed to develop an instrument which could be used to measure perceived competence of teachers in the implementation of...

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Predation on the St Joseph Callorhinchus capensis by Cape fur seals Arctocephalus pusillus pusillus in Namibia

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: RH Leeney --- Namibia Nature Foundation, Namibia N Dreyer --- Ocean Conservation Namibia, Namibia

Chondrichthyans form an important part of marine food webs as top predators and mesopredators. However, little is known about chondrichthyans in Namibian waters and the roles they play in ecosystem function. During efforts to disentangle Cape fur seals Arctocephalus pusillus...

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Coastal topography and rates of mussel recruitment: a comparison of bay versus open-coast sites

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: CD McQuaid --- Rhodes University, South Africa M Buresch --- Rhodes University, South Africa

The recruitment of intertidal benthic organisms that have planktonic larvae is influenced by hydrodynamics at multiple nested spatial scales, ranging from tens of centimetres to kilometres. Intertidal mussel populations on the south coast of South Africa are known to exhibit...

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Twenty-three new bird species for Angola, including Mayombe National Park in Cabinda Province, and other noteworthy records

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Michael SL Mills --- AP Leventis Ornithological Research Institute, University of Jos, Nigeria Rogério Ferreira --- , Angola Pedro Vaz Pinto --- Universidade do Porto, Portugal

The avifauna of Cabinda Province, Angola, is poorly known; since 1885 only one ornithological expedition has been made to the province, by AA da Rosa Pinto in 1969. All previous works that include Cabinda, including those of Rosa Pinto, were...

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Conditional indicators

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Dorsaf Cherif --- , Tunisia Emmanuel Lepinette --- Paris Dauphine University, France

In this paper, we introduce a large class of (so-called) conditional indicators, on a complete probability space with respect to a sub σ-algebra. A conditional indicator is a positive mapping, which is not necessary linear, but may share common features...

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“We have that connection, we have love; we take wildlife as gifts from our ancestors”: relations between antelopes and Khwe in Namibia’s Bwabwata National Park

Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Romie Nghitevelekwa --- University of Namibia, Namibia Selma Lendelvo --- University of Namibia, Namibia Fenny Ndapewa Nakanyete --- University of Namibia, Namibia Kletus Likuwa --- Social Sciences Division, University of Namibia, Namibia Kenneth Matengu --- University of Namibia, Namibia David Mushavanga --- , Namibia

Wildlife plays significant roles in many societies that go beyond its ecological importance and economic rationale associated with conservation. This article examines the meanings of antelopes for the Khwe people in Bwabwata National Park in north-eastern Namibia. It underlines the...

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The self-reported well-being of children in Namibia: Testing hedonic and eudaimonic instruments

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Shelene Gentz --- University of Namibia, Namibia Mònica Ruíz Casares --- Toronto Metropolitan University, Canada Ferran Casas --- Universidad Andrés Bello, Chile

Although research on hedonic and eudaimonic children’s well-being is growing, these constructs need to be understood within the African context. In this study we validated two psychometric scales with 10 and 12-year-old children (n = 2 035) in the Namibian...

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Profiling the mental health fortitude of institutionalised children: A quantitative analysis of psychological resources

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Adane K. Melese --- University of the Western Cape, South Africa Athena Pedro --- University of the Western Cape, South Africa Nceba Z. Somhlaba --- University of the Western Cape, South Africa

Numerous studies on institutionalised children demonstrate the undesirable influence of care centres on the levels of positive mental health. Against the established body of literature, this study evaluates the positive psychological qualities of children living in care centres and sex...

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On mid (p, r)-compact operators

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Salthiel Malesela Maepa --- University of Pretoria, South Africa Brian Chihinga Ndumba --- University of Pretoria, South Africa

Let 1 ≤ p ≤ ∞ and 1 ≤ r ≤ p* where p* is the conjugate index of p. We introduce and study mid (p, r)-compact sets and operators. We begin by introducing and defining the mid (p, r)-compact...

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A generalization of the MP- m -WGI

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Dijana Mosić --- University of Ni&scaron;, Serbia

Motivated by the notions of the MP--WGI and 1WGI, we further generalize these concepts and extend recent researches about them. Precisely, using an inner inverse and -WGI, we solve the system of matrix equation and introduce a new type of...

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Change in the prevalence of extra-uterine growth restriction in very low birthweight infants, following the introduction of a written nutrition protocol, in a tertiary neonatal unit

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: LND Mosidi --- University of Pretoria, A van Niekerk --- Steve Biko Academic Hospital, South Africa M Coetzee --- University of Pretoria,

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Water-quality assessment and spatial distribution of water-quality parameters of Dodoma Urban, Tanzania

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: OJ Mdee --- University of Dodoma, Tanzania B Mndolwa --- University of Dodoma, Tanzania N Sadiki --- University of Dodoma, Tanzania

The study was conducted in 2022 in shallow wells and deep boreholes owned by residents, to investigate the water quality status in the emerging developing area of Dodoma Urban municipality in central Tanzania. Eighteen boreholes and five shallow wells were...

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Population genetics and phylogeography of Trachylepis sulcata (Peters, 1867) and T. ansorgii (Boulenger, 1907) in south-western Africa

Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Brett O. Butler --- Universidad Nacional Autónoma de México, Mexico Luis M.P. Ceríaco --- Universidade do Porto, Portugal Todd R. Jackman --- Villanova University, Aaron M. Bauer --- Villanova University,

Ansorge’s Rock Skink Trachylepis ansorgii (Boulenger, 1907) is an Angolan taxon, the taxonomic distinctiveness and geographic distribution of which are poorly understood. It is closely related to the widespread Western Rock Skink T. sulcata (Peters, 1867) from Namibia and South...

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Local knowledge, utilisation and consumption of seaweed in coastal communities of southwestern Madagascar

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: C Rodine --- Institut Halieutique et des Sciences Marines (IH.SM), University of Toliara, Madagascar A Rakotoarimanana --- University of Toamasina, Madagascar AB Ramamonjisoa --- Institut Halieutique et des Sciences Marines (IH.SM), University of Toliara, Madagascar LN Ranivoarivelo --- Institut Halieutique et des Sciences Marines (IH.SM), University of Toliara, Madagascar C Rakotomahazo --- Institut Halieutique et des Sciences Marines (IH.SM), University of Toliara, Madagascar GBG Todinanahary --- Institut Halieutique et des Sciences Marines (IH.SM), University of Toliara, Madagascar G Tsiresy --- University of Toamasina, ISTRCE [East Coast Regional Higher Institute of Technology], Madagascar H Jaonalison --- University of Liège, Belgium AL Nomenisoa --- Institut Halieutique et des Sciences Marines (IH.SM), University of Toliara, Madagascar I Eeckhaut --- University of Mons, Belgium ME Remanevy --- Institut Halieutique et des Sciences Marines (IH.SM), University of Toliara, Madagascar JS Obe --- , Madagascar R Rasolofonirina --- Institut Halieutique et des Sciences Marines (IH.SM), University of Toliara, Madagascar T Lavitra --- Institut Halieutique et des Sciences Marines (IH.SM), University of Toliara, Madagascar

This study explored the local knowledge, utilisation and consumption of seaweeds (lomotsy in Malagasy) among coastal communities in southwestern Madagascar. Primary data were collected in eight villages, through a survey questionnaire (with a total of 629 respondents) and daily focus...

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A framework for using social media for organisational learning: An empirical study of South African companies

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Harry Moongela* --- University of Pretoria, South Africa Marié Hattingh --- University of Pretoria, South Africa

This study addresses the gap in the literature in terms of the lack of guidelines for organisations that would like to use social media to facilitate organisational learning (OL). This study presents an overarching conceptual theoretical framework that can assist...

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On the general position number of the k-th power graphs

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Jing Tian --- Zhejiang University of Science and Technology, China Kexiang Xu --- Nanjing University of Aeronautics & Astronautics, China

A set is called a general position set of a graph G if any triple set V 0 of R is non-geodesic, that is, three elements of V 0 cannot lie on the same geodesic of G. The general position...

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Sociodemographic, mental, and physical health determinants of incident depressive symptoms among ageing men and women in rural South Africa: A longitudinal study from 2015 to 2022

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Karl Peltzer --- University of the Free State, South Africa

We aimed to assess the associations between sociodemographic, mental, and physical health factors and incident depressive symptoms (IDS) among ageing men and women in rural South Africa over time. Data from the 7-year South African longitudinal Health and Ageing in...

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The contribution of leader–member exchange (LMX) to organisational sustainable development: Results and implications from Kenyan public universities study

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Mirriam Ogunja --- University of Electronic Science and Technology of China, China Zhao Shurong --- University of Electronic Science and Technology of China, China Yu Manjing --- University of Electronic Science and Technology of China, China Huang Rui --- University of Electronic Science and Technology of China, China Du Ying --- University of Electronic Science and Technology of China, China

We aimed to establish the contribution of leader–member exchange (LMX) to sustainable development of public universities in the emerging country of Kenya. The participants were 320 employees from public universities in Kenya (female = 43.1%; middle level managers = 47.8%,...

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Assessing the extent to which African wetland inventories can report to the global targets on biodiversity, including Goal A of the Global Biodiversity Framework

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: MM Sadiki --- University of Pretoria, RSA H van Deventer --- University of Pretoria, RSA CD Hansen --- University of Pretoria, RSA

Wetlands face global threats with estimates suggesting a loss ranging from 21% to 85% of their original extent. Africa’s wetlands, covering about 4.4% of the continent, provide crucial services to millions of people and harbour significant biodiversity. This study assesses...

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Comparative analysis of habitat structure and macroinvertebrate assemblages in headwater streams of Odzi sub-catchment, Chimanimani District, Zimbabwe, post Cyclone Idai-induced flooding

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Brian Mamvura --- , Zimbabwe Tongayi Mwedzi --- Chinhoyi University of Technology, Zimbabwe Beaven Utete --- Chinhoyi University of Technology, Zimbabwe

Flooding results in short and long-term modifications of aquatic ecosystem structure and biodiversity. Cyclone Idai, which ravaged through Zimbabwe in 2019, had devastating consequences on aquatic ecosystems. However, the extent of habitat modification and consequent biodiversity shifts are unknown. This...

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A rapid fishery assessment to collect biological information and life-history parameters for rednose labeo Labeo rosae and Mozambique tilapia Oreochromis mossambicus in Loskop Dam, Olifants River, South Africa

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: HA Hlungwani --- University of Limpopo, South Africa SM Marr --- University of Limpopo, South Africa OLF Weyl --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa AC Hoffman --- , South Africa H Botha --- University of Limpopo, South Africa JR Sara --- University of Limpopo, South Africa

A 2-week rapid fishery assessment using various sampling gears was conducted to collect life-history data on rednose labeo Labeo rosae and Mozambique tilapia Oreochromis mossambicus in Loskop Dam on the Olifants River, Mpumalanga Province, South Africa. These native species were...

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Determinants of rural women economic empowerment: the Case of Bahir Dar Zuria Woreda in Amhara Region, Ethiopia

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Abate Yesigat --- Department of Economics, Hawassa University, Hawassa, Ethiopia, Walelign Awoke --- Project Planning, Monitoring and Evaluation Expert, Department of Project Management and Monitoring, Amhara Region Bureau of Women, Children and Social Affairs, Bahir Dar, Ethiopia,

The issue of women's empowerment has been a topic of ongoing discussion in developing countries, considering the complex socio-demographic and cultural factors at play. Women tend to face disadvantages compared to men across various human development indicators. Therefore, it is...

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Dear Mr Sobukwe: examining Robert Mangaliso Sobukwe’s pan-African vision and how it has influenced youth movements in South Africa today

Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Karabo-Maya Rodwell --- University of the Witwatersrand, South Africa

Pan-Africanism is experiencing a resurgence amongst young people in post-1994 South Africa. In this article, I explore how people across different generations interpret the legacy of a critical figure in South African history, Robert Mangaliso Sobukwe. The participants in this...

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Some properties in vector sequence spaces

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Ioana Ghenciu --- University of Wisconsin-River Falls, River Falls, USA Roxana Popescu --- University of Pittsburgh, USA

Some classes of operators T on are characterized in terms of the induced operators Tn on each Xn . We study pseudo weakly compact, limited completely continuous, q-convergent, DP q-convergent, limited q-convergent, weak Dunford-Pettis, weak* Dunford-Pettis, weak q-convergent, weak* q-convergent...

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Local knowledge and uses of the Senegal Parrot Poicephalus senegalus in northern Benin

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Hermann Cyr Toni --- Université Nationale d’Agriculture, Benin Ayékotchami Jacques Dossou --- Université Nationale d’Agriculture, Benin Mèvognon Pacôme Mama --- Université Nationale d’Agriculture, Benin Christel Kenou --- , Benin Agossou Bruno Djossa --- Université Nationale d’Agriculture, Benin

Humans rely on several services delivered by biodiversity for their subsistence. Relationships between humans and biodiversity vary among sociocultural groups. Considering the increasing threats on parrot species worldwide, this study assessed local knowledge and uses of the Senegal Parrot Poicephalus...

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Nest-site selection by Hooded Vultures Necrosyrtes monachus in the Sudano–Sahelian area of Burkina Faso

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Clément Daboné --- University Centre of Tenkodogo, Thomas Sankara University, Burkina Faso Lindy J Thompson --- , South Africa Adama Ouéda --- University Joseph Ki-Zerbo, Burkina Faso Idrissa Ouédraogo --- University Joseph Ki-Zerbo, Burkina Faso Peter DM Weesie --- University of Groningen, The Netherlands

Understanding the factors influencing selection of nesting habitat may be important in the placement and management of Vulture Safe Zones (areas where vultures can safely breed) and in the development of successful conservation programmes. In this study, we analysed the...

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A preliminary macroinvertebrate index of biotic integrity (M-IBI) for monitoring the highland flood plain wetland ecosystems in Ethiopia

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Habtamu Getnet Fetene --- Asossa University, Ethiopia Seyoum Mengistou --- Addis Ababa University, Ethiopia Bikila Warkineh Dullo --- Addis Ababa University, Ethiopia

Anthropogenic activities have put tremendous pressure on the natural condition of wetlands. However, few studies have used indices based on benthic invertebrates to assess the effect of these pressures on wetland ecosystems. Multi-metric indices (MMIs) have been used successfully to...

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Strengthening the DNA barcode reference library for marine copepods in South Africa

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: A Rawoot --- University of the Western Cape, South Africa A Govender --- Oceanographic Research Institute (ORI), South Africa JC Groeneveld --- Oceanographic Research Institute (ORI), South Africa S Willows-Munro --- University of KwaZulu-Natal, South Africa R Cedras --- , South Africa

DNA barcode reference libraries that link taxonomically verified species records to standardised barcode sequences form the basis for species identification using molecular methods. We conducted an integrated morphology and molecular study of marine copepods collected from the continental shelf of...

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Aspects of the reproductive biology of the common Octopus vulgaris from landings in the coastal trawl and artisanal fleets in the Atlantic waters of southern Morocco

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: B Oubahaouali --- Abdelmalek Essaâdi University, Morocco A Kaddouri --- Abdelmalek Essaâdi University, Morocco M Aksissou --- Abdelmalek Essaâdi University, Morocco

An investigation of aspects of the reproductive biology of the common octopus Octopus vulgaris caught in the Atlantic waters of southern Morocco was undertaken in 2020. The study focused on the demographic structure and sexual maturity of O. vulgaris by...

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Predicting wearable technology readiness in a South African government department: Exploring the influence of wearable technology acceptance and positive attitudes

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Henda J. Thomas --- Tshwane University of Technology, South Africa Cornelia P. J. Harmse --- Tshwane University of Technology, South Africa Cecile Schultz --- Tshwane University of Technology, South Africa

Wearable technologies are anticipated to flourish in the fourth industrial revolution, enabling employers to integrate data into organizational systems. This study examined whether readiness for wearables can predict employees’ acceptance of these devices in the workplace. It explored the factors...

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On variants and generalizations of J-frames

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Siyabonga S. Dubazana --- University of KwaZulu-Natal, S.A. Simo S. Mthethwa --- University of KwaZulu-Natal, S.A.

A J-frame is a pointfree topology counterpart of the concept of a J-space. In this paper, we present a study of some frames satisfying conditions that are stronger (and some that are weaker) than those defining J-frames. Conditions under which...

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Well-posedness result for the flow of Maxwell viscoelastic fluid of White-Metzner type

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Djohra Dekhil --- University of Science and Technology Houari Boumdiene USTHB, Algeria Toufik Laadj --- University of Science and Technology Houari Boumdiene USTHB, Algeria Khaled M’hamed-messaoud --- University of Science and Technology Houari Boumdiene USTHB, Algeria

In this paper, we investigate the flow characteristics of an unsteady quasistatic Maxwell viscoelastic fluid of White-Metzner type within a three-dimensional bounded domain. Our objective is to establish the well-posedness of the resulting partial differential equations initial boundary value problem,...

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Index characterization and monogenity of septic number fields defined by x ⁷ + ax ⁴ + b

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Omar Kchit --- Sidi Mohamed ben Abdellah University, Morocco

In this paper, we calculate the index of any septic number field K generated by a root α of a monic irreducible trinomial F(x) = x 7 + ax 4 + b ∈ ℤ[x]. Our approach is based on Engstrom’s...

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The impact of COVID-19 on the hospitality sector and the growing demand for health-conscious services, with a focus on India

Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Geetanjali Sageena --- Indian Council of Medical Research, India Suneel Kumar --- Shaheed Bhagat Singh College, University of Delhi, India

The COVID-19 pandemic significantly disrupted the global hospitality sector, with travel restrictions and lockdowns causing severe declines in tourism. In 2020, international tourist arrivals fell by 74%, leading to an estimated $1 trillion revenue loss. India’s hospitality sector, contributing 9%...

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Research in Hospitality Management: a retrospective and future views, and the case of padel sport

Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Sjoerd A. Gehrels --- Stenden University Leeuwarden, The Netherlands

Hospitality is a phenomenon in society that has attracted a lot of attention in research over the past few decades. The Hotel Management School Leeuwarden (HMSL) is one of the colleges of the Dutch University of Applied Sciences (UAS) NHL-Stenden...

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Preliminary evaluation of residual herbicides for the control of camelthorn bush (Alhagi maurorum Medik.)

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: B.D. Viljoen [cor0005] C.W. Stoltsz --- Agricultural Research Council, Plant Protection Research Institute, South Africa M. van der Rijst --- Agricultural Research Council, Biometry Unit, South Africa

Camelthorn bush (Alhagi maurorum Medik.) invasion in South Africa is a serious, but still relatively localized problem, with the potential to spread into many other parts of the country. Previous research revealed the difficulty in killing the deep extensive root...

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The moderating role of emotional intelligence on the association between adverse childhood experiences and conduct problems of adolescents

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Joy I. Ugwu --- University of Nigeria, Nigeria Peace N. Ibeagha --- University of Nigeria, Nigeria Cecilia O. Apex-Apeh --- University of Nigeria, Nigeria Charity N. Onyishi --- State University of Medical and Applied Sciences Igbo Eno, Nigeria Amuche B. Onyishi --- University of Nigeria, Nigeria Ike E. Onyishi --- University of Nigeria, Nigeria

We explored the moderating role of emotional intelligence in the relationship between adverse childhood experiences and conduct problems of adolescents. The participants were 588 in-school Nigerian adolescents (male = 59.9%; mean age = 14.64 years, SD = 1.31 years). They...

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Two new algebraic structures more general than weak rings

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Teng Zhang --- Zhejiang University of Science and Technology, China

In 1994, Bergelson and Hindman established a remarkable result for IP* sets: for any IP* set A and any sequence l in ℕ, there exists a sum subsystem l′ of l such that all finite sums and finite products of...

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The approximation property for the predual of weighted spaces of holomorphic mappings on Banach spaces

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Deepika Baweja --- , India Jahir Abbas Sardar --- , India

In this paper, we investigate the approximation property for the predual of the weighted space of holomorphic mappings, where is a countable family of weights defined on a balanced open subset U of a Banach space E. We introduce a...

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Mental health among high school students in South Africa: Roles of childhood adversity, bullying behaviour, peer pressure, and self-esteem

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Kenni Wojujutari Ajele --- North-West University Mafikeng, South Africa Kedibone Johanna Ramadie --- North-West University, South Africa Erhabor Sunday Idemudia --- North-West University Mafikeng, South Africa Lawrence Ejike Ugwu --- North-West University Mafikeng, South Africa

We explored the relationship between childhood adversity, bullying, peer pressure, self-esteem, and mental health among South African high school students. Adolescents (n = 769, mean age = 15.83 years, SD = 1.85 years, range = 12–22 years) completed a cross-sectional...

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Online risk exposure and mental health in Chinese junior high school students: A latent profile analysis

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Yali Zhang --- Hebei Normal University, China Kangyue Jin --- Hebei Normal University, China Yuanyuan Huang --- , China Yongzhi Jiang --- Inner Mongolia Minzu University, China

We explored the latent profile of online risk exposure and its relationship with school students’ mental health. Junior high school students (n = 1 178; female = 49.5%, male = 50.5%; Grade 7 = 57.1%, Grade 8 = 42.9%) completed...

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Recreating valour: Exploring the life domains and quality of life impact among military re-enactors

Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Dewald Venter --- Vaal University of Technology, South Africa

This study explored the effect on military re-enactors’ life domains and quality of life (QoL). Eight military re-enactors (female = 1, male = 7; age range 42–75 years) were interviewed before and after participating in a military re-enactment regarding the...

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Diversity, distribution and knowledge gaps of Polychaeta on the continental shelf of southern Namibia

Item type: Journal Article • Journal: African Zoology • Authors: Amoré Malan --- , South Africa Aiden Biccard --- , South Africa Jessica Dawson --- , South Africa Robyn Payne --- , South Africa Kevin Schmidt --- , South Africa Kirti N Gihwala --- , South Africa Ken Hutchings --- , South Africa Deon Louw --- , Namibia Josef Shikeva --- , Namibia Blessing Kamwi --- , Namibia Lapaka Kaimbi --- , Namibia Julien Vumazonke --- , Namibia Megameno Mutaleni --- , Namibia Thomas Shannon --- , United Kingdom Sarah Chordekar --- , United Kingdom Vere Ross-Gillespie --- , United Kingdom

This study investigated the diversity, composition and distribution patterns of polychaete macrofauna inhabiting unconsolidated sediments on the continental shelf of southern Namibia. During the austral summer of 2021, 910 Van Veen grab samples were collected from 91 sites in water...

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Over half of South African beverages will require warning labels for high sugar and/or artificial sweeteners

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Wantonda Mukhovha --- University of the Witwatersrand, South Africa Naledi Sibiya --- University of the Witwatersrand, South Africa Thanujj Kisten --- University of the Witwatersrand, South Africa Molatela K Mamabolo --- University of the Witwatersrand, South Africa Siphiwe N Dlamini --- University of the Witwatersrand, South Africa

Objective: To determine the proportion of commercially available beverages that may require warning labels for high sugar content and the presence of artificial sweeteners in South Africa.

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Factors impacting online purchasing spend

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: S. Rudansky-Kloppers --- University of South Africa, South Africa P. Bester --- University of South Africa, South Africa

Online shopping has increased dramatically over the past couple of years and is expected to continue to grow. In South Africa, a marked increase in online shopping has been noted, despite still lagging behind international adoption levels. As internet adoption...

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Identification of factors influencing electricity consumption in Yaoundé City, Cameroon

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Léonce Tokam --- University of Lomé, Togo Sanoussi S. Ouro-Djobo --- University of Lomé, Togo

This study explores the factors influencing household electricity consumption in Yaoundé, Cameroon, where energy poverty, frequent power cuts and high tariffs pose major challenges to ensuring reliable, affordable and permanent access to electricity for populations, given the energy potential the...

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On a weak law of large numbers and L^p -convergence for general random variables

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Qi Gao --- Henan Normal University, China Yu Miao --- Henan Normal University, China

In the present paper, we consider a sequence of the general random variables, which include the sequences of martingale differences, and establish the weak law of large numbers and the convergence in Lp under some weaker conditions.

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On a variant of extremal disconnectedness in locales and spaces

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Themba Dube --- University of South Africa, South Africa Ali Taherifar --- Yasouj University, Iran

We study a variant of extremal disconnectedness in frames, defined by requiring that any two disjoint open sublocales should be separable by disjoint open sublocales each of which is the interior of some zero-sublocale. In spaces, this notion was recently...

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Multiplication operators on the weighted Sobolev disk algebra

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Yucheng Li --- Hebei Normal University, China Kaikai Han --- Hebei University of Economics and Business, China Hexin Zhang --- Hebei Normal University, China

Let ⅅ be the unit disk in the complex plane ℂ. For α > −1, the weighted Sobolev disk algebra SA(ⅅ, dAα ) consists of all analytic functions in the weighted Sobolev space W 2,2(ⅅ, dAα ). In this paper,...

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Mapping suitable habitat for Hooded Vultures Necrosyrtes monachus in one of the last West African strongholds for the species, The Gambia

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Michael Bode Agunbiade --- Brandenburg University of Technology Cottbus-Sefftenberg, Germany Jallow Mawdo --- Abuko Nature Reserve Headquarters, The Gambia Fagimba Camara --- West African Bird Study Association, Abuko Nature Reserve Headquarters, The Gambia Chefor Fotang --- Brandenburg University of Technology Cottbus-Sefftenberg, Germany Elvis Tangwa --- Palacky University (UP), Czech Republic Olayinka Amos Oladosu --- Brandenburg University of Technology Cottbus-Sefftenberg, Germany Luc Roscelin Dongmo Tédonzong --- Centre for Research and Conservation (CRC), Royal Zoological Society of Antwerp (RZSA), Belgium Yisa Ginath Yuh --- Planning and Environment, University of Concordia, Canada Darcy Ogada --- The Peregrine Fund, United States Klaus Birkhofer --- Brandenburg University of Technology Cottbus-Sefftenberg, Germany

Hooded Vultures Necrosyrtes monachus are Critically Endangered, with numbers decreasing due to illegal poisoning, hunting for belief-based use and food, and habitat loss. In The Gambia, human activities currently benefit commensalism between humans and Hooded Vultures, as these birds primarily...

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The quest(ion) of Leaning Towards a Liberal Historiography in Edgar Tekere’s A Lifetime of Struggle (2007) and Cephas Msipa’s In Pursuit of Freedom and Justice: a Memoir (2015)

Item type: Journal Article • Journal: Eastern African Literary and Cultural Studies • Authors: Walter Kudzai Barure --- , South Africa

Zimbabwe’s historiography is commonly confined to a singular narrative that glorifies the deeds of a few prominent figures while sidelining the contributions and perspectives of other political actors. This paper redirects the narrative focus by examining Edgar Tekere’s A Lifetime...

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The D-property of extremely normal spaces and the metrizability of certain compact spaces

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Liang-Xue Peng --- Beijing University of Technology, China

In this article, we show that every extremely normal space is a D-space. We introduce a notion called weakly extremely normal with respect to a weak base for a space X. We show that if a space X is weakly...

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Exploring the role of open and distance education in empowering women technological skills in Nigeria

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Jane Ada Ukaigwe --- National Open University of Nigeria, Nigeria Hakeem O. Liadi --- National Open University of Nigeria, Nigeria Christiana Uchenna Ezeanya --- National Open University of Nigeria, Nigeria Olayemi Mikail Olaniyi --- National Open University of Nigeria, Nigeria

The pursuit of gender equality and women's empowerment is a crucial driver of societal and economic growth in any nation. Despite the expansion of educational opportunities, women in Nigeria still encounter major obstacles to pursuing higher education and developing their...

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Feeding practices of very low birthweight infants born 2018 at a tertiary hospital in South Africa

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: AM Haughton --- Walter Sisulu University, South Africa IA Michaelis --- Walter Sisulu University, South Africa

Introduction: In recent decades, there has been a global increase in the birth and survival rates of very low birthweight (VLBW) infants. Breastfeeding plays a crucial role in providing optimal nutrition for the growth and development of these infants, particularly...

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Case study: nutrition and hydration support in a child with Cornelia de Lange and short bowel syndrome on home parenteral nutrition

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Cecile van Niekerk --- University of Pretoria, South Africa Christa Ellis --- University of Pretoria, South Africa Claire Martin --- University of Pretoria, South Africa

Cornelia de Lange syndrome (CdLS) (NIPBL variant) is a rare genetic disorder, characterised by intellectual and congenital abnormalities, ultimately resulting in growth and developmental delays. This case report describes a 7-year-old boy presenting with CdLS. The patient had a percutaneous...

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Sugar-sweetened beverage intake and anthropometric profile of grade 6 learners in the Nelson Mandela Bay area, South Africa: a mixed-methods study

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Candice Stansbury --- Stellenbosch University, South Africa Zarina Ebrahim --- Stellenbosch University, South Africa Daniel Nel --- Stellenbosch University, South Africa Penelope Love --- Deakin University, Australia Yolande Smit --- Stellenbosch University, South Africa

Background: A paucity of data exists regarding the intake of sugar-sweetened beverages (SSBs) among children and the prevalence of childhood overweight and obesity in the Nelson Mandela Bay area in South Africa (SA).

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Understanding the factors associated with child malnutrition in rural Burundi: experiences from the Muyinga and Ngozi provinces

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Willy Désiré Emera --- Ghent University, Belgium Marijke D’Haese --- Ghent University, Belgium Wannes Slosse --- Ghent University, Belgium Carl Lachat --- Ghent University, Belgium

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Ukucobelelana ngolwazi olungamagugu ase-Afrika lwesenzo ‘goma’ olusemyalezweni osenkundleni yezokuxhumana iTikTok

Item type: Journal Article • Journal: South African Journal of African Languages • Authors: Beryl Babsy Boniwe Xaba --- University of South Africa, South Africa

Sekube nokukhalaza okuningi ngokubhalwa kolimi ezinkundleni zokuxhumana. Izingcweti zolimi kanye nabacwaningi bolimi abagculisekile ngokusetshenziswa kolimi kulezi zizindalwazi. Isililo esikhulu sisuswa ukungayilandeli imigomo nemithetho yolimi lwesiZulu uma kubhalwa ezinkundleni zokuxhumana. Lolu cwaningo luhlose ukwethula indlela inkundla yezokuxhumana iTikTok efundisa ngayo ngemvelaphi...

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Women and Femininity in Setswana Proverbs: Pragmatic Analysis

Item type: Journal Article • Journal: South African Journal of African Languages • Authors: Kealeboga Aiseng --- University of the Witwatersrand, South Africa

Many African cultures have been discredited, ridiculed and negated. This study offers a different perspective on understanding African cultures. The article visits one of the oldest forms of literature in African societies, oral literature, focusing on proverbs to unpack gender...

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Banaschewski compactifications via special rings of functions in the absence of the Axiom of Choice

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Alireza Olfati --- Yasouj University, Iran Eliza Wajch --- University of Siedlce, Poland

For a topological space is the ring of all continuous real functions f on X such that, for every real number ϵ > 0, there exists a countable clopen cover of X such that the oscillation of f on each...

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On the reduction of powers of self-adjoint operators

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Salima Kebli --- University of Oran 1, Algeria Mohammed Hichem Mortad --- University of Oran 1, Algeria

Let T ∈ B(H) be such that Tn is self-adjoint for some with n ≥ 3. The paper’s primary aim is to establish the conditions that lead to the self-adjointness of T. We pay particular attention to the case where...

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Institutional scaffolding: MNEs responses to institutional weakness in contexts of violent conflict

Item type: Journal Article • Journal: Africa Journal of Management • Authors: Emmanuel Ekpenyong --- Nyenrode Business University, The Netherlands Diana Santistevan --- EM Normandie, Laboratoire Métis, France Yasmina Khadir --- Nyenrode Business University, The Netherlands Rob Blomme --- Nyenrode Business University, The Netherlands

Multinational enterprises (MNEs) use a variety of strategic responses to navigate weak institutional contexts. Scholars of MNE responses general focus on relatively stable regions. This paper examines how MNEs navigate institutional weaknesses in contexts of violent conflict by examining the...

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Type 2 diabetes mellitus but not overweight/obesity reduces testicular volume and endocrine function in men

Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: E Musa --- Kaduna State University, Nigeria GC Musa --- University of Cape Town, South Africa E Salazar-Petres --- Universidad San Sebastián, Carrera de Obstetricia, Chile F Bello --- Ahmadu Bello University, Nigeria AG Bakari --- Ahmadu Bello University, Nigeria

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Adoption of orange-fleshed sweet potato and technical efficiency nexus in Nigeria: An endogeneity corrected stochastic production frontier approach

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Adetomiwa Kolapo --- Obafemi Awolowo University, Nigeria Akeem Abiade Tijani --- Obafemi Awolowo University, Nigeria

Due to low productivity and lack of essential nutrients like vitamin A in the traditional white and yellow potato, orange-fleshed sweet potato (OFSP) was introduced to the farmers in Nigeria through a programmed tagged Jumpstarting Project. However, empirical data about...

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Population growth of Daphnia magna cultured in manure-fertilised water under laboratory conditions

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Adamneh Dagne --- Ethiopian Institute of Agricultural Research (EIAR), National Fishery and other Aquatic Life Research Center, Ethiopia Getacher Beyene --- Ethiopian Institute of Agricultural Research (EIAR), National Fishery and other Aquatic Life Research Center, Ethiopia Alemayehu Wubie --- Ethiopian Institute of Agricultural Research (EIAR), National Fishery and other Aquatic Life Research Center, Ethiopia

In developing countries, mass production of Daphnia magna, used as a food in freshwater aquaculture, is a challenge. A fifteen-day laboratory experiment was conducted to examine the population growth and reproductive parameters for D. magna reared in green water fertilised...

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Rapid assessment of the Seychelles octopus (Octopus cyanea) fishery value chain: insights for sustainable management

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: J McCafferty --- Rhodes University, South Africa A Ebrahim --- , Seychelles WHH Sauer --- Rhodes University, South Africa R Wright --- , South Africa A Vidot --- , Seychelles V Schmidt --- Food and Agriculture Organization of the United Nations (FAO), Italy

The octopus fishery for Octopus cyanea in Seychelles plays an important role in local cuisine, culture and tourism, yet it is unmanaged unlike other octopus fisheries in the western Indian Ocean region. We conducted a rapid assessment of the octopus...

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Spatial environmental variability shapes the diversity of bottom ecosystems on the western Gulf of Guinea shelf

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: C Denechaud --- Institute of Marine Research (IMR), Norway E Dovlo --- Fisheries Scientific Survey Division (FSSD), Ghana T Joanny --- Centre de Recherches Océanologiques (CRO), Côte d’Ivoire VS Osei --- Fisheries Scientific Survey Division (FSSD), Ghana L Buhl-Mortensen --- Institute of Marine Research (IMR), Norway A Staby --- Institute of Marine Research (IMR), Norway

The western Gulf of Guinea is characterised by seasonal upwellings and hosts a large diversity of marine species. Although the assemblages of bottom fishes and benthic organisms are periodically assessed, there has been little research investigating these in tandem. We...

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Understanding the distribution and densities of ghost crabs (Ocypode spp.) to improve management of hawksbill turtle Eretmochelys imbricata nesting sites

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: T Godding --- , Seychelles S Evans --- , Seychelles M Brown --- School of Life Sciences, University of KwaZulu-Natal, South Africa

Predation on sea turtle nests is a natural occurrence at nesting beaches worldwide, with various animals consuming the eggs and hatchlings as part of the ecosystem. Cousine Island in the Seychelles Archipelago is an important nesting site for the Critically...

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Public attitudes towards responsibilities and actions to curb obesity in South Africa: Second South African Human Development Pulse Survey

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Ashleigh Craig --- University of the Witwatersrand, South Africa Gudani Mukoma --- University of Venda,, South Africa Witness Mapanga --- University of the Witwatersrand, South Africa Asanda Mtintsilana --- University of Cape Town, South Africa Siphiwe N Dlamini --- University of the Witwatersrand, South Africa Lisa K Micklesfield --- University of the Witwatersrand, South Africa Shane A Norris --- University of the Witwatersrand, South Africa

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New properties of some classes of Saphar type operators

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Ayoub Ghorbel --- University of Sfax, Tunisia Snežana Č. Živković-Zlatanović --- University of Ni&scaron;, Serbia

This paper explores additional properties of some classes of Saphar type operators, namely left Drazin invertible, essentially left Drazin invertible, right Drazin invertible, and essentially right Drazin invertible operators on Banach spaces, building upon the groundwork laid in [8] and...

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Umbilicity of complete linear Weingarten hypersurfaces immersed in certain Einstein manifolds

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Henrique F. de Lima --- Universidade Federal de Campina Grande, Brazil Lucas S. Rocha --- Universidade Federal de Campina Grande, Brazil Marco Antonio L. Velásquez --- Universidade Federal de Campina Grande, Brazil

In this paper, we present some sets of geometric conditions that ensure the umbilicity of linear Weingarten hypersurfaces immersed in an Einstein manifold satisfying standard curvature constraints which, in particular, are verified by a Riemannian space with constant sectional curvature...

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HIV incidence and prevalence projections for Zimbabwe: Findings from five mathematical models

Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Isaac Taramusi --- UNAIDS UCO Zimbabwe, Zimbabwe John Stover --- , United States of America Robert Glaubius --- , United States of America Tsitsi Apollo --- Ministry of Health and Child Care, Zimbabwe Getrude Ncube --- Ministry of Health and Child Care, Zimbabwe Owen Mugurungi --- Ministry of Health and Child Care, Zimbabwe Ngwarai Sithole --- Ministry of Health and Child Care, Zimbabwe Loveleen Bansi-Matharu --- Institute for Global Health, University College London, United Kingdom Jenny Smith --- Institute for Global Health, University College London, United Kingdom Andrew Phillips --- Institute for Global Health, University College London, United Kingdom Valentina Cambiano --- Institute for Global Health, University College London, United Kingdom Daniel T Citron --- New York University Grossman School of Medicine, United States of America Anna Bershteyn --- New York University Grossman School of Medicine, United States of America Debra ten Brink --- Burnet Institute, Australia Rowan Martin-Hughes --- Burnet Institute, Australia Michael Pickles --- Medical Research Council Centre for Global Infectious Disease Analysis, Imperial College London, United Kingdom Paul Revill --- University of York, United Kingdom Amon Mpofu --- National AIDS Council of Zimbabwe, Zimbabwe Jeffrey Imai-Eaton --- Chan School of Public Health, Center for Communicable Diseases Dynamics, Harvard University, United States of America Richard Makurumidze --- Faculty of Medicine and Health Sciences, University of Zimbabwe, Zimbabwe Simbarashe Rusakaniko --- Faculty of Medicine and Health Sciences, University of Zimbabwe, Zimbabwe

Introduction: Understanding how HIV epidemics are likely to behave in the future is key to informing HIV response strategies in low-income countries. Up-to-date HIV epidemiological estimates are important for policy decision- making, but surveillance data can be out of date...

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Influence of self-compassion on HIV-related stigma, health-related quality of life, and depression among HIV/AIDS patients

Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Chinenye Joseph Aliche --- North West University, South Africa Erhabor Sunday Idemudia --- North West University, South Africa Michael O. Ezenwa --- Nnamdi Azikiwe University, Nigeria

Background: People living with HIV/AIDS (PLWHA) may experience HIV-related stigma, which could negatively impact health-related quality of life (HRQoL) and increase symptoms of depression. Self-compassion is a positive personality attribute that may protect PLWHA against stigmatisation. Previous studies have not...

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Determinants of modern agricultural technology adoption: Evidence from Western Ethiopia

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Tamiru Chalchisa Geleto --- Jimma University, Ethiopia Seid Sani --- Wolkitie University, Ethiopia Obsu Hirko Diriba --- Jimma University, Ethiopia

This study explores the factors influencing agricultural technology adoption among settlers and native farmers in selected districts of Benishangul Gumuz regional state, Ethiopia. A multistage sampling procedure was employed to gather data from 380 randomly chosen participants. The major data...

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Names of the days in the seven-day week in Bantu languages of Tanzania

Item type: Journal Article • Journal: South African Journal of African Languages • Authors: Amani Lusekelo --- University of Dar es Salaam,

Studies about the names of the days of the week in Eastern African societies have previously focused on a single ethnic group. Therefore, it is necessary to investigate the names across Bantu1 languages of Tanzania in order to set apart...

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Doke revisited – Combining Zulu ‘vowel verbs with variant non-vowel forms’ and ‘latent-vowel verbs’ in a single category

Item type: Journal Article • Journal: South African Journal of African Languages • Authors: Michel Lafon --- University of Pretoria, South Africa Mongezi Bolofo --- University of South Africa,

Doke’s influence on Zulu description cannot be overstated. It underlies, to this day, most grammatical works on the language. Our attempt here is to do away with a subtle distinction Doke introduced by merging the two sub-categories of what he...

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On the sum of annihilators in nearrings

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Nastaran Naseripour --- Shahrood University of Technology, Iran Ebrahim Hashemi --- Shahrood University of Technology, Iran Mahsa Paykanian --- Shahrood University of Technology, Iran

A ring is termed a left IN-ring if the right annihilator of the intersection of any two left ideals is equal to the sum of their right annihilators. As a generalization of left IN-ring, a ring is called a right...

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Protective and risk factors for social and emotional well-being of Indigenous children and adolescents: A rapid review

Item type: Journal Article • Journal: Journal of Child & Adolescent Mental Health • Authors: Nelsensius Klau Fauk --- Torrens University Australia, Australia Elsa Dent --- Caring Futures Institute, College of Nursing and Health Sciences, Flinders University, Australia Paul Aylward --- Torrens University Australia, Australia Paul Russell Ward --- Torrens University Australia, Australia Jessica Tyndall --- Torrens University Australia, Australia Lesli Kirwan --- Torrens University Australia, Australia Lillian Mwanri --- Torrens University Australia, Australia

Background: Indigenous children and adolescents experience life circumstances that significantly affect their social and emotional well-being (SEWB) and limit their capacity to fulfil their potential. This contributes to inequities in health, education, employment, and justice system involvement.

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Contagion from crypto exchange hacks: Wealth effect or portfolio rebalancing?

Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Dung Thi Ngoc Pham --- College of Technology and Design, University of Economics Ho Chi Minh City, Vietnam Chune Young Chung --- Ton Duc Thang University, Vietnam Doojin Ryu --- Sungkyunkwan University, Korea

This study explores the contagion mechanism from the cryptocurrency market to stock markets of 30 countries with the highest Bitcoin trading volumes, focusing on cyberattacks targeting cryptocurrency exchanges. We identify investor-induced contagion through the wealth effect as the primary transmission...

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A baseline survey of coastal birds in the Greater Bazaruto region, Mozambique

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Peter G Ryan --- University of Cape Town, South Africa Cliff Dorse --- , South Africa Dave Gilroy --- , Mozambique James Hogg --- , United Kingdom Albert McLean --- , South Africa Christine Read --- , South Africa Evan Trotzuk --- African Parks Mozambique, Mozambique Gary Allport --- The David Attenborough Building, United Kingdom

We report the numbers of coastal birds in the Greater Bazaruto Important Bird and Biodiversity Area (IBA), Mozambique. In November–December 2023, we counted waterbirds foraging on tidal flats and at roost sites in the San Sebastian (São Sebastião) Peninsula, Bazaruto...

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Diet composition of the Marsh Owl Asio capensis at the Merja Zerga coastal lagoon, northwestern Morocco

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Abdeslam Rihane --- Regional Center for Education and Training (CRMEF) Casablanca-Settat, Morocco Sidi Imad Cherkaoui --- Institut Scientifique, Research Center: Geophysics, Natural Patrimony and Green Chemistry (GEOPAC), Morocco

The diet of the Marsh Owl Asio capensis (family Strigidae) was examined at Merja Zerga coastal lagoon and wetland on the Gharb Plain, northwestern Morocco. The analysis was carried out on several small batches of regurgitated pellets, collected in January...

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Exploring mental health literacy and its intersection with help-seeking behaviours and gender in adolescents in the Western Cape.

Item type: Journal Article • Journal: Journal of Child & Adolescent Mental Health • Authors: Michelle Scher --- University of South Africa, South Africa Naiema Taliep --- Institute for Social and Health Sciences, University of South Africa, South Africa Ghouwa Ismail --- Institute for Social and Health Sciences, University of South Africa, South Africa

Background: Adolescent mental illness contributes significantly to both the global and South African burden of mental health. Mental health literacy (MHL) promotes early recognition and intervention and consequently, determines mental health-promoting behaviours. We aimed to explore adolescent MHL and its...

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Subjective well-being and parenting in adolescence: Do peers matter when things are not so good?

Item type: Journal Article • Journal: Journal of Child & Adolescent Mental Health • Authors: Aikaterini Lampropoulou --- National and Kapodistrian University of Athens, Greece

Objective: The study aimed to investigate the association between adolescents’ subjective well-being and parenting, as well as the moderating role of peer relationships between the negative aspects of parenting and subjective well-being.

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Operators whose adjoints and second adjoints are almost Dunford-Pettis

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Geraldo Botelho --- Universidade Federal de Uberlândia, Brazil Luis Alberto Garcia --- Instituto de Ciências Exatas, Universidade Federal de Juiz de Fora, Brazil

First we characterize the Banach lattices E whose biduals have the positive Schur property by means of second adjoints of operators on E being almost Dunford-Pettis. Next we extend some known results concerning conditions on the Banach lattices E and...

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11. Sugar and health: a food-based dietary guideline for South Africa

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Temple NJ --- Centre for Science, Athabasca University, Canada Steyn NP --- Knowledge Systems, Human Sciences Research Council,

The intake of added sugar appears to be increasing steadily across the South African population. Children typically consume approximately 40-60 g/day, possibly rising to as much as 100 g/day in adolescents. This represents roughly 5-10% of dietary energy, but could...

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Exploring the relationship between peer loneliness, problematic videogame use, and cyberbullying victimisation in adolescence

Item type: Journal Article • Journal: Journal of Child & Adolescent Mental Health • Authors: Alberto Amadori --- Free University of Bozen-Bolzano, Italy Giulia Prestera --- Free University of Bozen-Bolzano, Italy Francesca Sangiuliano Intra --- Free University of Bozen-Bolzano, Italy Livia Taverna --- Free University of Bozen-Bolzano, Italy Caterina Primi --- University of Florence, Italy Antonella Brighi --- Free University of Bozen-Bolzano, Italy

Background: Adolescence, acknowledged as a transformative developmental phase marked by socio-emotional challenges, introduces an elevated susceptibility to loneliness. As adolescents are exposed to loneliness, they concurrently navigate the dynamic landscape of problematic videogame use, characterised by deleterious gaming patterns with...

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Adolescents’ school experiences: Understanding the needs of young people post COVID-19

Item type: Journal Article • Journal: Journal of Child & Adolescent Mental Health • Authors: Pamela Marie Patrick --- Monash University, Australia Sarah Pamflett --- Monash University, Australia

Background: During the COVID-19 pandemic, students in Victoria, Australia, completed two years of virtual schooling, which has been reported to contribute to many academic, social, and mental health impacts. Thus, it is important to capture the voices of the students...

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Podiatric intervention to salvage diabetic lower limbs: a case report

Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: ME Moothee --- University of Johannesburg, South Africa T Mokoena --- Charlotte Maxeke Johannesburg Academic Hospital, South Africa

In South Africa (SA), podiatrists play an important role in the multidisciplinary team in diabetic limb salvage. Preventive ulcer development strategies offered by a podiatrist include regular monitoring, routine care of calluses, and offloading. Furthermore, podiatric intervention includes prophylactic and...

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Stereotypical Home Making: Producing Subjects through Spatial Stories in Afronovelas

Item type: Journal Article • Journal: Eastern African Literary and Cultural Studies • Authors: Daddy Dibinga Kalamba --- Techniche Universität, Germany Séverine Marguin --- Techniche Universität, Germany

In recent decades, television series in Senegal and Côte d'Ivoire have emerged as influential mass media forms with broad audiences, driven by a dynamic and rapidly evolving industry in these countries. In this paper, we study series belonging to the...

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Growth patterns and condition index of rock oysters Saccostrea cucullata in relation to river influence in southeastern Madagascar

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: M Masimana --- Institut d’Enseignement Supérieur d’Anôsy, Université de Toliara, Madagascar A Andrisoa --- Aix-Marseille University, CNRS, IRD, INRAE, CEREGE, France

Saccostrea cucullata is the dominant species of rock oyster (family Ostreidae) in southeastern Madagascar. Despite its economic and ecological importance, information on its biology and ecology is scarce. This study investigated the growth, shell length–weight relationship, and condition index (tissue...

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Too cold to sing: Warbler dawn chorus affected by environmental factors in a high-elevation wetland

Item type: Journal Article • Journal: African Zoology • Authors: Toka Mosikidi --- University of the Free State, South Africa Nicholas R Friedman --- Leibniz Institute for the Study of Biodiversity Change, Germany Nicholas Le Maitre --- University of the Free State, South Africa Sandy-Lynn Steenhuisen --- University of the Free State, South Africa Vincent Ralph Clark --- University of the Free State, South Africa Kyle John Lloyd --- University of the Free State, South Africa Aliza le Roux --- University of the Free State, South Africa

Many bird species take part in a dawn chorus, the phenomenon in which the community of songbirds in a particular habitat, show a peak of vocal activity around dawn. Understanding the species-specific extrinsic factors affecting this intensive singing activity is...

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Acceptance, availability, and accessibility of reformulated sugar-sweetened beverages in Pietermaritzburg, KwaZulu-Natal, South Africa

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Nikita Baijnath --- University of KwaZulu-Natal, South Africa Kirthee Pillay --- University of KwaZulu-Natal, South Africa Nicola Wiles --- University of KwaZulu-Natal, South Africa

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Psychosocial predictors and gender differences in the mental well-being of adolescents living with HIV in Ibadan, Nigeria

Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Ezekiel O. Aruoture --- University of Ibadan, Nigeria Abel C. Obosi --- University of Ibadan, Nigeria

Background: The psychosocial vulnerability of adolescents living with HIV, particularly in sub-Saharan Africa, where structural and psychosocial stressors are prevalent, is an important public health concern. While several studies have investigated some psychosocial factors as they predict mental well-being among...

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Wintering grounds under protection: population stability and conservation of migrating waders at Europa Island, western Indian Ocean

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Florinah Razafimandimby --- Université de La Réunion, France Maxime Amy --- TAAF (Terres australes et antarctiques françaises), France Matthieu Le Corre --- Université de La Réunion, France

The tropical western Indian Ocean islands are at the southern limit of the East Africa–West Asia Flyway, but their importance for wintering and conservation of Palearctic waders remains poorly understood. Europa Island, a remote coralline island in the southern Mozambique...

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Pleistocene Hamerkop Scopus umbretta (Scopidae) tracks and other new avian ichnosites on South Africa’s Cape south coast

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Charles W Helm --- Nelson Mandela University, South Africa Given Banda --- Nelson Mandela University, South Africa Andrew S Carr --- University of Leicester, United Kingdom Hayley C Cawthra --- Nelson Mandela University, South Africa Jan C de Vynck --- Nelson Mandela University, South Africa Mark G Dixon --- Nelson Mandela University, South Africa Alex van den Heever --- Magazine Hill, South Africa

Eight Pleistocene avian ichnosites have been identified in aeolianites on South Africa’s Cape south coast, adding to the 41 sites previously identified. All the newly identified sites are thought to fall within the age range of marine isotope stages (MIS)...

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Investigation on the foraging ecology of black crowned cranes at Lake Tana, Ethiopia, in the context of climate change impacts

Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: SA Zelelew --- Bahir Dar University, Ethiopia C Relton --- , South Africa

There are significant gaps in understanding the food resources of the black crowned crane in the Lake Tana wetlands. This study examined macroinvertebrates in crane habitats, investigated the impact of rainfall on macroinvertebrates in relation to pollution tolerance, and identified...

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“We wait to become”: The politics of selfhood, culture and control in waiting mothers’ shelters

Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Brenda Muchabveyo --- University of Free State, South Africa

In this article, I explore how cultural norms, bodily autonomy and institutional control intersect in shaping maternal care in a waiting mothers’ shelter (WMS) in Mawadza, a rural community in Mutasa District, Zimbabwe. Looking through a symbolic interactionist lens, I...

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Catch trends and population status of the leopard whipray Himantura leoparda (family Dasyatidae) off the east coast of South Africa

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: BQ Mann --- Oceanographic Research Institute (ORI), South Africa R Daly --- Oceanographic Research Institute (ORI), South Africa D Parker --- University of Queensland, Australia GL Jordaan --- Oceanographic Research Institute (ORI), South Africa G Cliff --- KwaZulu-Natal Sharks Board, South Africa N Nkabi --- KwaZulu-Natal Sharks Board, South Africa R Kyle --- South African Association for Marine Biological Research (SAAMBR), South Africa R Bennett --- Wildlife Conservation Society, South Africa

The leopard whipray Himantura leoparda (family Dasyatidae) is globally assessed as Endangered on the IUCN Red List of Threatened Species owing to the species’ inherent vulnerability and declining population trends. In this study we assessed the population found off the...

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Methane emission and performance indicators of sheep fed Super Napier grass, sodium hydroxide-treated rice straw and leaves of two browse species (Leucaena leucocephala and Albizia lebbek)

Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: FO Sarkwa --- College of Basic and Applied Sciences, University of Ghana, Ghana V Antwi --- College of Basic and Applied Sciences, University of Ghana, Ghana EC Timpong-Jones --- College of Basic and Applied Sciences, University of Ghana, Ghana FY Obese --- College of Basic and Applied Sciences, University of Ghana, Ghana T Adogla-Bessa --- Evangelical Presbyterian University College, Ghana DY Osei --- Animal Research Institute, Ghana F Adu Boahene --- College of Basic and Applied Sciences, University of Ghana, Ghana S Andoh --- College of Basic and Applied Sciences, University of Ghana, Ghana

Methane produced during enteric fermentation in ruminants is influenced by dietary factors. To lower enteric methane emissions without lowering overall production performance, appropriate diets are needed. Thus, the performance and methane emission of sheep fed Super Napier grass (SN), sodium...

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A reduced-parameter predator–prey model of soil formation from bedrock and biomass

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Animesh Samanta --- The Neotia University, India Priyanka Mandal --- The Neotia University, India Ayan Chatterjee --- The Neotia University, India

Soil–bedrock interaction on hillslopes is not well-studied, though it's affected by many physical and chemical factors. The aim of the present mathematical modelling study is to construct a model for soil formation utilising ordinary differential equations, all while reducing the...

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On power sums of Fourier coefficients of cusp forms

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Huafeng Liu --- Shandong Normal University, China Jingyang Lü --- Shandong Normal University, China

We denote by λ f (n) the n-th normalized Fourier coefficient of primitive holomorphic cusp form of even integral weight k ≥ 2 for the full modular group SL(2,). In this paper, we prove asymptotic formulae for l-th power sums...

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First report of Melanterius inconspicuus (Coleoptera: Curculionidae: Cleogonini) from KwaZulu-Natal, South Africa, with observations of its development in black wattle

Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Wilma J Nel --- Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, South Africa Irene Barnes --- Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, South Africa Sandisiwe Jali --- Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, South Africa Fiona Impson --- University of Cape Town, Department of Biological Sciences, South Africa Rolf G Oberprieler --- Australian National Insect Collection, Australia Brett P Hurley --- Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, South Africa

Melanterius is a large genus of small weevils that primarily feed on the seeds of Acacia species occurring in their native range in Australia. In the latter part of the 20th century, five seed-feeding Melanterius species were released against several...

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Describing the triple burden of malnutrition in adolescents in rural and urban South Africa

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: SH Crouch --- University of the Witwatersrand, South Africa DE Mathatha --- University of the Witwatersrand, South Africa LK Micklesfield --- University of the Witwatersrand, South Africa NJ Christofides --- University of the Witwatersrand, South Africa C Desmond --- University of the Witwatersrand, South Africa SJ Sharp --- Institute of Metabolic Science, University of Cambridge, United Kingdom KK Ong --- Institute of Metabolic Science, University of Cambridge, United Kingdom SM Tollman --- University of the Witwatersrand, South Africa K Kahn --- University of the Witwatersrand, South Africa SA Norris --- University of the Witwatersrand, South Africa

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Nutritional management of a patient with a small bowel neuroendocrine tumour and obstruction: a South African case study

Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Kirsten E Drake --- Groote Schuur Hospital, South Africa

Small bowel neuroendocrine tumours (SBNETs) arise from enterochromaffin cells, most commonly in the terminal ileum. Functional tumours may secrete hormones, which can lead to carcinoid syndrome, whereas non-functional tumours often present later with symptoms of mechanical obstruction. Malnutrition is common...

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Exploiting ChatGPT generated dataset for weather prediction using Seagull Optimization with Deep Learning Model

Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: S. Usha --- Assistant Professor (Sr.Gr ), Department of Computer Science and Engineering, University College of Engineering BIT Campus, Anna University, Tiruchirappalli, Tamil Nadu, India K. Rama Devi --- Professor, Department of Information Technology, Panimalar Engineering College, Chennai, India V. Saraswathi --- Professor, Department of Computer Science and Engineering, Chennai Institute of Technology, Chennai, India R. Kavitha --- Assistant Professor, Department of Computer Science and Engineering, University College of Engineering BIT Campus, Anna University, Tiruchirappalli, Tamilnadu, India

ChatGPT, a powerful language model, can generate diverse fictional weather datasets including temperature, humidity, wind speed, and more. This research proposes the SGOADL-WDC technique, which employs ChatGPT-generated data for weather classification. It integrates data preprocessing with an attention-based bidirectional LSTM...

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Comparative benchmarking of fertiliser uses for oilseed crop production in South Africa

Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: HT Ottermann --- , South Africa SJ Haarhoff --- Stellenbosch University, South Africa KJ Truter --- , South Africa F Meyer --- , South Africa D van der Westhuizen --- , South Africa PA Swanepoel --- Stellenbosch University, South Africa

This study comparatively benchmarks fertiliser use over two periods (2013–2015; 2021–2023) in South Africa's oilseed crop production [soybean (Glycine max), canola (Brassica napus) and sunflower (Helianthus annuus)] against global trends, with a focus on major oilseed exporters. It explores fertiliser...

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Large bird collision mortality on power lines in southern Namibia

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: John Pallett --- University of Cape Town, South Africa Peter G Ryan --- University of Cape Town, South Africa

Globally, power lines cause significant mortalities of birds through collisions and electrocutions, yet this problem has received only sporadic attention in Namibia. Vehicle-based surveys were undertaken every three months for one year to record mortalities of large birds along 349...

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Updates on population status of vultures in Nazinga Game Ranch, Burkina Faso

Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Clément Daboné --- Animal Biology and Ecology, University Centre of Tenkodogo/Thomas Sankara University, Burkina Faso Idrissa Ouédraogo --- Laboratory of Animal Biology and Ecology, Joseph Ki-Zerbo University, Burkina Faso Idrissa Ouédraogo --- Laboratory of Animal Biology and Ecology, Joseph Ki-Zerbo University, Burkina Faso Adama Ouéda --- Laboratory of Animal Biology and Ecology, Joseph Ki-Zerbo University, Burkina Faso Wendengoudi Guenda --- Laboratory of Animal Biology and Ecology, Joseph Ki-Zerbo University, Burkina Faso Peter DM Weesie --- Integrated Research on Energy, Environment and Society, University of Groningen, The Netherlands

In the early 2000s, the ornithological community was alerted to the vulture population decline in West Africa. Since then, the situation of vultures in this area has not been updated, specifically in Burkina Faso’s protected areas. To find out more,...

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A discursive engagement of evasions in police-suspect interactions in Ibadan, Nigeria

Item type: Journal Article • Journal: South African Journal of African Languages • Authors: Temidayo Akinrinlola --- McPherson University, Nigeria Temitope Michael Ajayi --- University of Ibadan, Nigeria

This study reports the discursive appeals embedded in the deployment of evasions in police-suspect interactions (PSIs) in Ibadan. Studies have marked investigating police officers (IPOs) as participants who overtly wield power during interrogation. This study argues that power is not...

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Ubuciko bokwethiwa kwamagama abalingiswa emanovelini abhalwa ngemuva konyaka wezi-2000: kubhekwa ukwethiwa kwabalingiswa ukuthi kuyafana nokwetha jikelele

Item type: Journal Article • Journal: South African Journal of African Languages • Authors: Lindani Sthembele Maphumulo --- University of Western Cape, South Africa Mzamo Hlengwa --- University of Free State, South Africa

Ngokwevamile igama liqukathe izinto ezithile ezihambisana nokwethiwa kwalo (Lubisi, 2002; De Klerk and Bosch, 1995: 69). Igama liqukethe ubuntu kanye nobunjalo bakhe lowo owethiwe lelo gama kepha ezinye izinhlanga zilibuka njengelebuli esetshenziswa ukwetha ukuze izinto zikwazi ukuhlukaniseka. Isifundo sokwethiwa kwamagama...

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Growth potential and productivity of the green macroalgae Ulva reticulata in a sustainable farming system in a coastal lagoon at Bambous Virieux, Mauritius

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: N Nazurally --- Department of Agricultural and Food Science, University of Mauritius, Mauritius D Beehary-Panray --- Environmental Protection and Conservation Organisation (EPCO), Resilient Island Endeavour (RISE) Project, Mauritius EC Gatteschi --- Cooperazione Internazionale Sud Sud (CISS), Resilient Island Endeavour (RISE) Project, Italy

Ulva reticulata is a fast-growing green macroalga with high bioremediation and economic potential. Cultivation of this seaweed at Bambous Virieux in southeast Mauritius was undertaken to evaluate its growth potential and biological feasibility in a tropical lagoon. Over a 30-day...

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Life-history traits of the false jacopever Sebastes capensis (Scorpaenidae: Sebastinae) in South African waters

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: T Mohamed --- Department of Biological Sciences, University of Cape Town, South Africa CG Attwood --- Department of Biological Sciences, University of Cape Town, South Africa

The genus Sebastes (rockfishes) of family Scorpaenidae (scorpionfishes) contains over 110 species, of which the false jacopever Sebastes capensis is the only one found in South African waters. Although it is a commonly caught linefish along the west coast of...

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Benthic macrofaunal changes in response to restoration efforts in the St Lucia estuarine lake, South Africa

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: PC Moloi --- School of Agriculture and Science, University of KwaZulu-Natal, South Africa GM Rishworth --- Department of Zoology, Institute for Coastal and Marine Research, Nelson Mandela University, South Africa MS Bird --- Department of Zoology, University of Johannesburg, South Africa NK Carrasco --- School of Agriculture and Science, University of KwaZulu-Natal, South Africa

The St Lucia estuarine lake and Mfolozi River mouth on the Indian Ocean coast of South Africa were once a single, connected system but were artificially separated in 1952 to prevent siltation from the Mfolozi River catchment which risked shallowing...

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Analysis of wave energy distribution in the Gulf of Guinea based on reanalysis data from 1993 to 2019

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: G Dingong --- College of Marine Living Resource Sciences and Management, Shanghai Ocean University, China F Bonou --- International Chair of Physics, Mathematics and Applications, University of Abomey-Calavi, Benin Z Sohou --- International Chair of Physics, Mathematics and Applications, University of Abomey-Calavi, Benin

This study examined the geographical and seasonal distribution of wave parameters (significant height, period, direction) and wave energy in the Gulf of Guinea using MFWAM (Météo-France WAve Model) reanalysis data from 1993 to 2019. The model was validated utilising satellite,...

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Will I survive? Assessing the thermal tolerance of an estuary-dependent mugilid, Chelon dumerili, in a changing climate

Item type: Journal Article • Journal: African Journal of Marine Science • Authors: BA Ziko --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa AR Childs --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa DL Mukhari --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa TS Murray --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa

Determining the thermal tolerance limits of fishes is crucial for understanding their persistence in the face of anthropogenic climate change. This study used dynamic critical thermal assays to determine the upper (CTmax) and lower (CTmin) critical thermal limits of an...

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The Body as a Site for Marginalization and Violence in Ebrahim Hussein’s Kinjeketile (1969)

Item type: Journal Article • Journal: Eastern African Literary and Cultural Studies • Authors: Maryline Chepngetich Kirui --- Moi University, Kenya

Marginalization involves subjugating groups and relegating them to the position of the ‘Other.’ It is idealized and realized through the creation of the dominant group ‘self’ as being the centre and the subordinate group ‘the other’ as being in the...

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The Frank graph

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Efruz Özlem Mersin --- Aksaray University, Turkey Ayşe Dilek Maden --- Selcuk University, Turkey Mustafa Bahşi --- Aksaray University, Turkey

This paper introduces the Frank graph, a special weighted digraph with self-loops whose adjacency matrix corresponds to the Frank matrix, a special Max matrix. We derive bounds for the spectral radius and energy of the graph and illustrate these results...

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On asymptotically almost periodic mild solutions of chemotaxis-fluid systems on bounded domains

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Dam Thi Ngoc Van --- Division of Mathematics, Banking Academy of Vietnam, Vietnam Tran Minh Nguyet --- Department of Mathematics, Thang Long University, Vietnam Pham Truong Xuan --- Thang Long University, Vietnam

We study the well-posedness and exponential stability of almost periodic (AP-) and asymptotically almost periodic (AAP-) mild solutions for the chemotaxis-Navier-Stokes systems on a bounded domain Ω ⊂ ℝd (d ⩾ 2) with the smooth boundary. Our strategy is: we...

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Composition operators on the weighted BMOA spaces with closed range

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Rikio Yoneda --- Institute of Human and Social Sciences, Kanazawa University, Japan

We study the composition operator C φ with closed range on the weighted space :

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Weyl double-measure pseudo almost periodic functions and Weyl double-measure pseudo almost periodic solutions to semilinear evolution equations

Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Yongkun Li --- Department of Mathematics, Yunnan University, People’s Republic of China

This paper aims to address significant gaps in the theory of almost periodic functions and their applications in differential equations. Although Weyl almost periodic functions generalize Bohr almost periodic functions and Stepanov almost periodic functions, the incompleteness of the space...

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