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Growth, Yield and Timber Density of Short Rotation Coppice Stands of Eucalyptus grandis
Item type: Journal Article • Journal: South African Forestry Journal • Authors: A. P.G. Schönau --- Institute of Commercial Forestry Research, South AfricaThe effects of timing initial coppice reductions, number of reductions and final number of shoots per stool on growth and yield of Eucalyptus grandis are described. The basic data were obtained from three experiments situated in different climatic zones of... -
Role of Eucalypt Plantations in Timber Supply and Forest Conservation in Sub-Saharan Africa
Item type: Journal Article • Journal: South African Forestry Journal • Authors: A. P.G. Schönau --- Institute for Commercial Forestry Research, South AfricaThe role of eucalypt plantations in timber supply and forest conservation in Sub-Saharan Africa was investigated. The annual destruction of 11,5 million ha of tropical forest is highlighted, the various causes indicated and the controversy whether fast-growing plantations and woodlots... -
Conservation Developments in South African Forestry
Item type: Journal Article • Journal: South African Forestry Journal • Authors: R. McC. Pott --- ,The historical development of environmental conservational activities within the South African Forestry Industry is followed, and the changing emphasis from the conservation of the remaining indigenous forests (pre-1900) to water conservation, to natural assets and unplanted areas is highlighted. The... -
Ontogeny of Themeda triandra tillers in the false thornveld of the eastern cape
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: J.E. Danckwerts --- Department of Agriculture (Eastern Cape Region), A.J. Aucamp --- Department of Agriculture (Eastern Cape Region), L.P. Du Toit --- Department of Agriculture (Eastern Cape Region),Marked populations of Themeda triandra tillers were sequentially sampled at fortnightly intervals under normal conditions and without moisture stress respectively, covering a period from tiller initiation through to senescence after flowering. Parameters recorded were height of shoot apex, tiller mass,... -
The influence of different forms and concentrations of nitrogen on the growth and metabolism of digitaria eriantha and chloris Gayana grown under saline conditions
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: J M Brauer --- Department of Botany, MaureenM Wolfson --- Department of Botany,Chloris gayana and Digitaria eriantha plants were watered with nutrient media containing a high concentration of sodium chloride (150 mM) and either high (200 mg/l) or low (25 mg/l) concentrations of nitrate nitrogen and ammonium nitrogen. Dry mass and leaf... -
Growth analysis of themeda triandra and sporobolus fimbriatus tillers in semi‐arid grassveld
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: J.E. Danckwerts --- Department of Agriculture (Eastern Cape Region),Marked populations of Themeda triandra and Sporobolus fimbriatus tillers were sequentially harvested at fortnightly intervals both under irrigation and under unamended moisture conditions. Sampling covered a period from tiller initiation through to senescence after flowering. -
Effect of soil fertility on the vegetative growth, yield and water use of wheat (Triticum aestivum L.)
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.G. Annandale --- Department of Plant Production, Republic of South Africa P.S. Hammes --- Department of Plant Production, Republic of South Africa P.C. Nel --- Department of Plant Production, Republic of South AfricaWell-fertilized wheat was found to use more water than wheat on poorly fertilized plots, but the yield was increased, resulting in increased water-use efficiency. Variations in leaf area duration after anthesis accounted for 81% of the variation in yield. -
Interaction of nitrogen fertilization and irrigation water salinity on growth of maize (Zea mays L.) in a two-way line-source sprinkler system
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: R.E. Steynberg --- Department of Plant Production, Republic of South Africa D. Magnusson --- , Israel Y. Ben-Asher --- , Israel M. Silberbush --- , IsraelMaize was planted in a line-source sprinkler experiment in the Negev Desert in Israel. A double line-source system was used with one line source at right angles to the other. It was possible to create a gradient of salt concentration... -
Refinement and validation of the PUTU wheat crop growth model 2. Leaf area expansion
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A. Singels --- Department of Agrometeorology, Republic of South Africa J.M. de Jager --- Department of Agrometeorology, Republic of South AfricaA refined leaf growth submodel was incorporated in an existing wheat crop growth model. The submodel calculated daily green leaf area expansion per plant by taking into account plant population, crop age, interplant competition, temperature and crop water status. After... -
Refinement and validation of the PUTU wheat crop growth model 3. Grain growth
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A. Singels --- Department of Agrometeorology, Republic of South Africa J.M. de Jager --- Department of Agrometeorology, Republic of South AfricaA submodel for simulating daily grain growth was incorporated in an existing wheat crop growth model. The submodel calculated daily potential grain growth from green leaf area index, plant population and crop stage. Simulated daily potential grain growth was reduced... -
Die verhouding van bogrondse plant materiaal tot wortelgroeiveranderlikes van mielies op die Rooipoort/Clansthal ekotoop
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: D. Haarhoff --- , Repubüek van Suid-Afrika A. T.P. Bennie --- Departement van Grondkunde, Republiek van Suid-Afrika M. Hensley --- , Republiek van Suid-AfrikaDie verwantskap tussen bogrondse droëplantmassa, blaar- area-indeks en wortellengte vir mielies (Zea mays L. cv. PNR473) is op 'n Clansthal grondserie naby Potchefstroom ondersoek om sodoende 'n bydrae tot gewasmodellering te maak. Toekomstige wortellengtemetings kan moontlik by dié ekotoop en... -
Daggrade van katoenproduserende gebiede in Suid-Afrika
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M.C. Dippenaar --- , Republiek van Suid-Afrika J.J. Human --- Departement Agronomie, Republiek van Suid-Afrika'n Bewegende gemiddelde daaglikse minimum en maksimum lugtemperatuur is vir 23 weerstasies bereken wat in die katoenproduserende gebiede van Suid-Afrika aanwesig is. Hierdie data is gebruik om daagliks kumulatiewe daggrade (ΣDG) oor die periode 3 September tot einde van Mei... -
Simulation of main stem mature leaf area of maize
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A. Singels --- Department of Agrometeorology, Republic of South Africa J.M. de Jager --- Department of Agrometeorology, Republic of South AfricaThe accuracy of different models for simulating the area of mature leaves on the main stem (PLA) of maize using thermal time was investigated. The accuracy of sub-models for simulating the area of individual mature leaves (LAn) and the number... -
Measurement of radiant interception of crop canopies with the LAI-2000 plant canopy analyzer
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: N.Z. Jovanovic --- Department of Plant Production and Soil Science, Republic of South Africa J.G. Annandale --- Department of Plant Production and Soil Science, Republic of South AfricaThe performance of the plant canopy analyzer (PCA), model LAI-2000 (LI-COR, Lincoln, NE, USA), has been tested in two separate field trials for 18 annual crop and pasture species. The objective was to recommend appropriate techniques for reliable estimates of... -
Apparatus for non-destructive measurement of grapevine trunk cross-sectional area
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: P.A. Myburgh --- , South Africa F. Coetzee --- , South AfricaMeasuring sap flow in grapevine trunks, using the heat pulse velocity technique, requires accurate, non-destructive measurement of trunk cross-sectional areas. A profile measuring apparatus (PMA) was constructed to improve the accuracy of these measurements, particularly for irregular cross-sections. The low-cost... -
Leaf yield of Amaranthus hypochondriatus L. (Imbuya), affected by irrigation systems and water quality
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M.M. Sedibe --- , N. J. J. Combrink --- Dept. of Agronomy, E.Y. Reinten --- ,Family scale vegetable production should be enhanced in rural areas in order to prevent vitamin A deficiencies. A soil-less water-use-efficient ‘Ebb-and-Flood’ production system, developed for areas with limited water resources, was compared with two conventional soil irrigation systems, using Amaranthus... -
Response of Lachenalia growing in soil to nitrogen fertilization during the nursery phase
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: G.M. Engelbrecht --- Department of Soil, South Africa C.C. du Preez --- Department of Soil, South Africa J.J. Spies --- Departement of Plant Sciences, South AfricaDuring the nursery phase, Lachenalia flower bulb producers plant bulblets propagated from leaf cuttings, for enlargement. They strive for a high yield of good quality bulbs that are of a marketable size within a year. In this regard nitrogen is... -
Response of Lachenalia growing in soil to nitrogen fertilisation during the pot plant phase
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: G.M. Engelbrecht --- Department of Soil, Crop and Climate Sciences, South Africa C.C. du Preez --- Department of Soil, Crop and Climate Sciences, South Africa J.J. Spies --- Department of Plant Sciences, South AfricaLachenalia bulbs used in the pot plant industry are produced in the nursery phase from bulblets propagated from leaf cuttings. Fertilisation during this phase of enlargement can ultimately influence the growth and flowering of pot plants through the nutritional status... -
Effect of plant spacing on growth and yield of lettuce (Lactuca sativa L.) in a soilless production system
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M.M. Maboko --- , C.P. Du Plooy --- ,Lettuce production in re-circulating hydroponic systems is done on a limited scale in South Africa with conflicting information on the recommended spacing for optimal yield and quality in such systems. The development and yield of four lettuce (Lactuca sativa L.)... -
Response of Lachenalia growing in soil to interactions between nitrogen and phosphorus fertilisation in the nursery phase
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: G.M. Engelbrecht --- Department of Soil, South Africa C.C. du Preez --- Department of Soil, South Africa J.J. Spies --- Department of Plant Sciences, South AfricaThe interactions between nutrients required by plants play an important role in sustainable crop production. Both nitrogen and phosphorus are involved in a number of important functions in the plant such as carbohydrate and protein formation. The need to investigate... -
Growth, phenological and yield responses of a bambara groundnut (Vigna subterranea (L.) Verdc.) landrace to imposed water stress under field conditions
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Tafadzwanashe Mabhaudhi --- Crop Science, School of Agricultural, Earth and Environmental Sciences, South Africa AlbertT Modi --- Crop Science, School of Agricultural, Earth and Environmental Sciences, South AfricaBambara groundnut (Vigna subterranea (L.) Verdc.) is an underutilised species with potential to contribute nutritional and food security in marginal areas. Growth, phenology and yield of a local bambara groundnut landrace from Jozini, KwaZulu-Natal, characterised into three selections according to... -
Movement patterns of red steenbras Petrus rupestris tagged and released in the Tsitsikamma National Park, South Africa
Item type: Journal Article • Journal: South African Journal of Marine Science • Authors: S. L. BrouwerMovement patterns of red steenbras Petrus rupestris were obtained from fish tagged and released in the Tsitsikamma National Park, South Africa. Of 217 fish tagged, 38 were recaptured. Juveniles (<700 mm FL) were resident, whereas adults (>700 mm FL) migrated... -
Nearshore surface current patterns in the Tsitsikamma National Park, South Africa
Item type: Journal Article • Journal: South African Journal of Marine Science • Authors: C. G. Attwood J. Allen P. J. ClaassenThe pattern of surface currents in the Tsitsikamma National Park, South Africa, was studied with holey-sock drogues released in batches of up to four at a time, from 1996 and 1998. Drogues were left to drift for either 6 or... -
The role of the Tsitsikamma National Park in the management of four shore-angling fish along the south-eastern Cape coast of South Africa
Item type: Journal Article • Journal: South African Journal of Marine Science • Authors: P. D. Cowley S. L. Brouwer R. L. TilneyThe role of the Tsitsikamma National Park (TNP) in the management of four important shore-angling fish (Diplodus sargus capensis, Diplodus cervinus hottentotus, Pachymetopon grande and Dichistius capensis) was evaluated using data obtained from two independent studies conducted over a similar... -
THE JUVENILE FISH POPULATION IN THE MARGINAL AREAS OF THE HENDRIK VERWOERD DAM
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: J.A. Cambray --- Cape Department of Nature and Environmental Conservation, South Africa S. Hahndiek --- Cape Department of Nature and Environmental Conservation, South Africa Q. Hahndiek --- Cape Department of Nature and Environmental Conservation, South AfricaSmall seine nets were used to collect minnow and juvenile fish from a variety of habitats around the 350 km shoreline of the Hendrik Verwoerd Darn. In addition several areas were sectioned off from the darn and poisoned. The species... -
PHYSICAL, CHEMICAL AND BIOTIC RESPONSES TO DECREASING WATER DEPTH IN A HIGHVELD PAN FOLLOWING WET AND DRY SUMMERS
Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: KH Rogers --- Department of Botany, WN Ellery --- Department of Botany, NL Winternitz --- Department of Botany, R Dohmeier --- Department of Botany,The classification of highveld pans by Geldenhuys (1982) emphasized the spatial diversity of morphology, vegetation and fauna. However, since the characteristics of individual pans also change seasonally and over longer term wet/dry cycles, he called for more detailed limnological studies... -
Aerial and Aquatic Respiration in the River Crab Potamonautes Warreni Calman with Notes on Gill Structure
Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: W.J. van Aardt --- Department of Zoology, South AfricaThe oxygen consumption rate (ṀO2) for Potamonauteus warreni Calman (= Potamon warreni (Calman) kept in 25 °C water was 34,4 μmol 1−1 O2 kg−1 and after 72 hours in 98% R.H. air the rate was 31,9 μmol 1−1 O2 kg−1... -
Movement response patterns of livestock to rainfall variability in the Richtersveld National Park
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: HH Hendricks B Clark WJ Bond JJ Midgley PA NovellieWe studied the seasonal and daily movement patterns of livestock (pastoralists) in the Richtersveld National Park to suggest management strategies that would support a balance between biodiversity conservation and livestock grazing. Livestock movement patterns indicated that forage is the motivation... -
Implications of changes to the transhumance system for conservation of the mountain catchments in eastern Lesotho
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: T. Quinlan --- Institute for Social and Economic Research, Republic of South Africa C.D. Morris --- Agricultural Research Council, Republic of South AfricaThe mountain catchments above 2 750 m a.s.l. in eastern Lesotho are a proclaimed Managed Resource Area (MRA) as a result of official concern about degradation of the grasslands of the alpine belt, and of recent parastatal interventions in the... -
Plant and sward response to patch grazing in the Highland Sourveld
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: B.U. Lütge --- Department of Grassland Science, Republic of South Africa M.B. Hardy --- KwaZulu‐Natal Department of Agriculture, Republic of South Africa G.P. Hatch --- Department of Grassland Science, Republic of South AfricaSelective grazing by livestock inevitably results in patch grazing. This study was initiated to determine the effects of patch grazing on (1) the vigour of a single grass species, Themeda triandra, and of the sward, and (2) sward species composition... -
Herbaceous biomass, species composition and soil properties of keygrazing patches in coastal forest thornveld and two grassland types of theEastern Cape province, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: B Moyo --- Livestock and Pasture Science, South Africa S Dube --- Natural Resources and the Environment, South Africa M Lesoli --- Livestock and Pasture Science, South Africa PJ Masika --- , South AfricaIn spite of predictions of communal rangeland collapse due to continuous grazing and increased livestock populations, this grazing system remains prevalent in communal areas, suggesting animals utilise heterogeneity found in these areas. A study was conducted to compare biomass and... -
Landscape-level differences in fire regime between block and patch-mosaicburning strategies in Mkuzi Game Reserve, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: CM Mulqueeny --- , South Africa PS Goodman --- , South Africa TG O'Connor --- School of Animal, Plant and Environmental Sciences, South AfricaPatch-mosaic burning (PMB) is commonly advocated to create a mosaic of fire regimes that is believed to be more beneficial for maintaining biodiversity than the relatively homogeneous environment produced by block burning. This premise was examined for the 23 651... -
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,... -
Alcohol Use in Three Different Inner Cities in South Africa: AUDIT-C and CAGE
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Karl Peltzer --- Human Sciences Research Council & University of Limpopo, Leickness Simbayi --- Human Sciences Research Council, Seth Kalichman --- University of Connecticut, Sean Jooste --- Human Sciences Research Council, Allanise Cloete --- Human Sciences Research Council, Ntombizodwa Mbelle --- Human Sciences Research Council,The aim of the present study was to describe the frequency of risky drinking among a general urban population survey (n=1379) in South Africa with the help of (Alcohol Use Disorders Identification Test) AUDIT-C scores, CAGE (Cut down, Annoyed, Guilty,... -
Traditionally-Grounded Strategies for Sexual Abuse Prevention among Children of African Descent in South Africa
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Nareadi Phasha --- University of Johannesburg,THIS article attempts to strike the balance between different worldviews in strengthening the existing anti-sexual abuse efforts so as to maximise their effectiveness and relevance to all people in South Africa. It discusses some of the practices associated with African... -
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 AfricaThis 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... -
South African Mothers' Perceptions and Experiences of an Unplanned Caesarean Section
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Samantha Lynne Roux --- North-West University, South Africa Esme van Rensburg --- North-West University, South AfricaNew motherhood is characterised as a profound change, and research suggests that the psychological effects of childbirth can be significant and far-reaching for some women. This study explored women's perceptions and experiences of childbirth by unplanned Caesarean section. In-depth interviews... -
Young Women who Have Experienced Unwanted Pregnancy: A Multiple Case Study
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Thandokazi T. Khethiwe --- University of Zululand, South Africa David J. Edwards --- University of Zululand, South Africa Jabulani D. Thwala --- University of Zululand, South AfricaQualitative approaches were used to understand the experience of pregnancy in a group of young Xhosa women (N =10, M age = 19.70, SD = 3.20). Data is provided on their retrospective accounts of factors which contributed towards unwanted pregnancy... -
The Influence of an Unplanned Caesarean Section on Initial Mother-Infant Bonding: Mothers' Subjective Experiences
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Samantha Lynne van Reenen --- North-West University, South Africa Esmé van Rensburg --- North-West University, South AfricaThis study explored the impact of an unplanned Caesarean section on mother-infant bonding, by examining the development of maternal identities and mothers' subsequent relationships with their babies. In-depth interviews with 10 women (mean age=28; SD=1.97) explored their lived experiences of... -
Children's caregiving of HIV-infected parents accessing treatment in western Kenya: challenges and coping strategies
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Louise Buhl Andersen --- London School of Economics and Political Science, United KingdomThis article describes qualitative research carried out in rural western Kenya in a setting characterised by poverty and high HIV prevalence. It discusses the responsibilities and challenges that children face when becoming the primary caregiver to an HIV-infected parent enrolled... -
Poverty, sexual behaviour, gender and HIV infection among young black men and women in Cape Town, South Africa
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Nicoli Nattrass --- Centre for Social Science Research (CSSR), South Africa Brendan Maughan-Brown --- Southern Africa Labour and Development Research Unit, South Africa Jeremy Seekings --- Centre for Social Science Research (CSSR), South Africa Alan Whiteside --- Health Economics and HIV/AIDS Research Division (HEARD), South AfricaThis article contributes methodologically and substantively to the debate over the importance of poverty, sexual behaviour and circumcision in relation to HIV infection, using panel data on young black men and women in Cape Town, South Africa. Methodological challenges included... -
Update on the bathymetry of Lake Mweru (Zambia), with notes on water level fluctuations
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: ArthurR Bos CyprianK Kapasa PaulAM van ZwietenA new bathymetric map of Lake Mweru was developed, displaying previously unknown morphological features and correcting the shape of the shoreline as presented in older maps. Water depth was measured during 11 transect cruises in early 1994. Two depressions were... -
Stock Structure of Snoek Thyrsites Atun in the Benguela: A New Hypothesis
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: M. H. GriffithsIt has long been accepted that snoek Thyrsites atun in the Benguela system constitute a single stock that undergoes seasonal longshore migration in waters between southern Angola and the west coast of South Africa. Based on a review of past... -
Biogeographic patterns in rocky intertidal communities in KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: KJ Sink GM Branch JM HarrisOn the east coast of southern Africa, marine biogeographic boundaries have previously been unresolved. This paper analyses large-scale patterns of community structure of rocky intertidal shores along the whole of the KwaZulu-Natal coast, based on abundance data covering 220 macroalgal... -
Alternate explanations of the dispersal pattern of galjoen Dichistius capensis
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: CG Attwood PD CowleyThe movement behaviour of galjoen Dichistius capensis (>250mm total length) was studied by using a tag and recapture technique. A total of 25 191 galjoen was tagged at four sites in South Africa. Three of the sites were in fully... -
The diet of the ragged-tooth shark Carcharias taurus Rafinesque 1810 in the Eastern Cape, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MJ SmaleThe ragged-tooth shark Carcharias taurus is a large predator of inshore coastal waters in the Eastern Cape, South Africa. Born at about 1m long and attaining approximately 3m, stomach content analyses have shown that it feeds largely on teleosts and... -
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 MeerCold-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... -
Towards the declaration of a large marine protected area: a subtidal ichthyofaunal survey of the Pondoland coast in the Eastern Cape, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: BQ Mann L Celliers ST Fennessy S Bailey AD WoodA subtidal marine ichthyofaunal survey was carried out on shallow reefs (1–30m deep) in the Pondoland region between the Mtamvuna River and Port St Johns in the Eastern Cape, South Africa. The purpose of this survey was to provide the... -
Coastal currents and temperatures along the eastern region of Algoa Bay, South Africa, with implications for transport and shelf–bay water exchange
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MJ Roberts --- Department of Environmental Affairs, South AfricaBoat ADCP surveys and an eight-month deployment of a 1 200 kHz ADCP were used to study the nearshore (5–25 m depth) current and temperature patterns along the eastern coastal region of Algoa Bay, on the south-east coast of South... -
Socio-economic aspects of boat-based ecotourism during the sardine run within the Pondoland Marine Protected Area, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: ML Dicken --- Department of Development Studies, School of Economics, Development and Tourism, South AfricaUnderstanding recreational aspects of the tourism industry developing around the KwaZulu-Natal sardine run is important for the protection and sustainability of the Pondoland Marine Protected Area (MPA), on the south-east coast of South Africa. Between June and July 2007, a... -
The ichthyofauna in the Port of Ngqura, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: ML Dicken --- Department of Development Studies, School of Economics, Development and Tourism, South AfricaThis study provides one of the first quantitative assessments of a fish community within a pre-operational deep-water port system. Between September 2006 and September 2007 a total of 4 559 fish, representing 47 species and 27 different families, were caught... -
First documented southern transatlantic migration of a blue shark Prionace glauca tagged off South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: C da Silva --- Branch Fisheries, Department of Agriculture, Forestry and Fisheries, South Africa SE Kerwath --- Branch Fisheries, Department of Agriculture, Forestry and Fisheries, South Africa CG Wilke --- Branch Fisheries, Department of Agriculture, Forestry and Fisheries, South Africa M Meÿer --- Oceans and Coasts, Department of Environmental Affairs, South Africa SJ Lamberth --- Branch Fisheries, Department of Agriculture, Forestry and Fisheries, South AfricaThe first documented recapture of a South African-tagged juvenile blue shark Prionace glauca off Uruguay lends weight to the hypothesis of a single blue shark population in the South Atlantic. The presence of neonate blue sharks with umbilical scars and... -
An alternative method for estimating the status of resident reef fish stocks, based on differential fishing effort across a marine reserve boundary
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: A Götz --- Elwandle Node, South Africa SE Kerwath --- Branch Fisheries, Department of Agriculture, South Africa CG Attwood --- Marine Research Institute, Zoology Department, South Africa WHH Sauer --- Department of Ichthyology and Fisheries Science, South AfricaThe stock status of roman Chrysoblephus laticeps was estimated in the Goukamma, a temperate South African marine protected area (MPA). Standardised catch per unit effort (CPUE) from a controlled angling survey on both sides of the MPA border was employed... -
Trends and interventions in large whale entanglement along the South African coast
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MA Meÿer --- Department of Environmental Affairs, South Africa PB Best --- , South Africa MD Anderson-Reade --- , South Africa G Cliff --- , South Africa SFJ Dudley --- , South Africa SP Kirkman --- Department of Environmental Affairs, South AfricaThe major causes of large whale entanglement in South Africa are static fishing gear, especially the type associated with the West Coast rock lobster Jasus lalandii industry, and large-mesh gillnets that are set off the coast of KwaZulu-Natal (KZN) to... -
Recolonisation of the Robberg Peninsula (Plettenberg Bay, South Africa) by Cape fur seals
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: J Huisamen --- , South Africa SP Kirkman --- Department of Environmental Affairs, South Africa LH Watson --- , South Africa VG Cockcroft --- Department of Zoology, South Africa PA Pistorius --- Department of Zoology, South AfricaThe Cape fur seal Arctocephalus pusillus pusillus colony at Robberg Peninsula, Plettenberg Bay, on the south-east coast of South Africa, was driven to extinction by indiscriminate harvesting by the late 1800s. Seals only began to recolonise this site in the... -
Temporal variability of a temperate fish assemblage in Africa's oldest marine protected area
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: NC James --- , South Africa A Götz --- Elwandle Node, South African Environmental Observation Network (SAEON), South Africa WM Potts --- Department of Ichthyology and Fisheries Science, South Africa PD Cowley --- , South AfricaA standardised research-based, shore-angling survey was conducted in the 47-year-old Tsitsikamma National Park Marine Protected Area (MPA) between 1998 and 2005. The aim of this study was to examine variability in community structure, relative abundance (catch per unit effort, CPUE)... -
Comparing fish communities in sanctuaries, partly protected areas and open-access reefs in South-East Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: JC Currie --- Department of Zoology, South Africa KJ Sink --- , South Africa P Le Noury --- , South Africa GM Branch --- Department of Zoology, South AfricaFish were surveyed by visual census on offshore reefs in Mozambique and eastern South Africa to compare (a) fully-protected ‘sanctuary’ areas, (b) ‘partly protected’ areas where recreational diving and limited fishing are permitted, and (c) ‘open’ unprotected areas. Community composition... -
Diet of the Cape fur seal Arctocephalus pusillus pusillus at the Robberg Peninsula, Plettenberg Bay, and implications for local fisheries
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: J Huisamen --- School of Natural Resource Management, South Africa SP Kirkman --- Oceans and Coasts, Department of Environmental Affairs, South Africa CD van der Lingen --- Branch: Fisheries, Department of Agriculture, Forestry and Fisheries, South Africa LH Watson --- School of Natural Resource Management, South Africa VG Cockcroft --- Department of Zoology, South Africa R Jewell --- Centre for Dolphin Studies, South Africa PA Pistorius --- Department of Zoology, South AfricaCape fur seals Arctocephalus pusillus pusillus were harvested to extirpation on the Robberg Peninsula, Plettenberg Bay, on the south-east coast of South Africa, between the 17th and early 20th centuries. Seals returned to Robberg in small numbers during the early... -
A spatio-temporal assessment of the Trachinotus botla shore-fishery in KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: D Parker --- Department of Ichthyology and Fisheries Science, South Africa AJ Booth --- Department of Ichthyology and Fisheries Science, South Africa BQ Mann --- , South AfricaThe shore-fishery for Trachinotus botla in KwaZulu-Natal appears to be in a stable state. A per-recruit assessment showed that the species is currently underexploited (spawner biomass-per-recruit = 75% of pristine levels) and that fishing mortality could theoretically be increased. The... -
Quantifying the degree of protection afforded by a no-take marine reserve on an exploited shark
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: C da Silva --- Fisheries Research, Department of Agriculture, South Africa SE Kerwath --- Fisheries Research, Department of Agriculture, South Africa CG Attwood --- Marine Research Institute, Zoology Department, South Africa EB Thorstad --- , Norway PD Cowley --- , South Africa F Økland --- , Norway CG Wilke --- Fisheries Research, Department of Agriculture, South Africa TF Næsje --- , NorwaySharks have been shown to benefit from the protection of marine protected areas (MPAs). There is, however, little information on the degree of protection by MPAs to shark populations. The movements of individual smoothhound sharks Mustelus mustelus in, and adjacent... -
Identifying management preferences, institutional organisational rules, and their capacity to improve fisheries management in Pemba, Mozambique
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: TR McClanahan --- , USA JE Cinner --- ARC Centre of Excellence for Coral Reef Studies, Australia C Abunge --- , USAThe potential to improve the management of fisheries in Pemba, Mozambique, were explored by evaluating stakeholder's preferences for management and the key institutional design elements of the fisheries organisations or community councils of fisheries (CCPs). We interviewed fishers, community leaders... -
Shallow-water, nearshore current dynamics in Algoa Bay, South Africa, with notes on the implications for larval fish dispersal
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: P Pattrick --- Department of Ichthyology and Fisheries Science, South Africa NA Strydom --- , South Africa WS Goschen --- , South AfricaNearshore currents play a vital role in the transport of eggs and larval stages of fish. However, little is known about their complexity and the implications for dispersal of fish larvae. The study describes the complexity of the shallow nearshore... -
Diversity and coverage of seagrass ecosystems in south-west Madagascar
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: JMO Hantanirina --- , UK S Benbow --- , UKSeagrass meadows provide important nursery and feeding grounds for many commercially valuable fish species. Here, we address the paucity of published information on the status of seagrasses in Madagascar by documenting the results from ecological surveys of 11 seagrass beds... -
Reproductive biology of horse mackerel Trachurus capensis and Trachurus trecae in Namibia and Angola
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: HON Ndjaula --- Department of Biology, Norway J-O Krakstad --- , Norway OS Kjesbu --- , NorwayHarvest control measures for Namibia and Angola are defined using reference points for spawning biomass, which requires knowledge of spawning potential and dynamics of fishery stocks. The reproductive biology of two species of horse mackerel, Trachurus capensis and Trachurus trecae,... -
A decade of illegal fishing in Table Mountain National Park (2000–2009): trends in the illicit harvest of abalone Haliotis midae and West Coast rock lobster Jasus lalandii
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: GC Brill --- Department of Geography and Environmental Science, South Africa SJPN Raemaekers --- Environmental Evaluation Unit, Department of Environmental and Geographical Sciences, South AfricaIllegal fishing activities are reported to be on the increase in South Africa, including in its marine protected areas (MPAs). Research is presented on the nature and the scale of illegal fishing in Table Mountain National Park (TMNP) by analysing... -
Inter-island movements of common bottlenose dolphins Tursiops truncatus among the Canary Islands: online catalogues and implications for conservation and management
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: M Tobeña --- Departamento de Biología Animal, Spain A Escánez --- Departamento de Biología Animal, Spain Y Rodríguez --- Departamento de Biología Animal, Spain C López --- Departamento de Biología Animal, Spain F Ritter --- MEER eV, Germany N Aguilar --- Departamento de Biología Animal, SpainA total of 313 individual common bottlenose dolphins Tursiops truncatus was photo-identified in four Special Areas of Conservation (SACs) in the western Canary Islands, Spain (El Hierro, La Palma, La Gomera and Tenerife), over a 10-year period (2001–2011). Of these,... -
Lessons learnt from experimental temporary octopus fishing closures in south-west Madagascar: benefits of concurrent closures
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: S Benbow --- Blue Ventures Conservation, Level 2 Annex, UK F Humber --- Blue Ventures Conservation, Level 2 Annex, UK TA Oliver --- Blue Ventures Conservation, Level 2 Annex, UK KLL Oleson --- Blue Ventures Conservation, Level 2 Annex, UK D Raberinary --- Blue Ventures Conservation, Level 2 Annex, UK M Nadon --- Blue Ventures Conservation, Level 2 Annex, UK H Ratsimbazafy --- Blue Ventures Conservation, Level 2 Annex, UK A Harris --- Blue Ventures Conservation, Level 2 Annex, UKThis paper presents evidence of the fisheries effect of experimental temporary fishing closures for Octopus cyanea in the then-emergent Velondriake Locally Managed Marine Area (LMMA) in south-west Madagascar during 2004–2006. We present an analysis of the O. cyanea catch data... -
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 AfricaUnderstanding 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... -
Factors that Affect Municipal Service Delivery in Gauteng and North West Provinces of South Africa
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Solomon Khale --- , South Africa Zeleke Worku --- , South AfricaThis study attempts to identify and quantify factors that affect service delivery by local government counsellors in the Gauteng and North-West provinces. The study is based on a stratified random sample of size n=300 respondents. Both quantitative and qualitative research... -
Agriculture and Climate Change in Cameroon: An Assessment of Impacts and Adaptation Options
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Yong D. Ngondjeb --- , CameroonThis study aims to assess the economic impact of climate change on crop farming activities in the Sudano-Sahelian Area of Cameroon. The study uses the Ricardian model and is based on farm data generated from a survey carried out in... -
Estimating the leaf area index (LAI) of black wattle from Landsat ETM+ satellite imagery
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: S.T. Ghebremicael --- School of Applied Environmental Sciences, Faculty of Science and Agriculture, South Africa C.W. Smith --- , South Africa F.B. Ahmed --- School of Applied Environmental Sciences, Faculty of Science and Agriculture, South AfricaRemote sensing techniques have the potential to provide resource managers with a rapid and economical method of acquiring information related to forest productivity and water use. This study evaluated the utility ofLandsat ETM +satellite imagery to predict canopy attributes ofBlack... -
The use of species–stem curves in sampling the development of the Zambian miombo woodland species in charcoal production and slash-and-burn regrowth stands
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: S Syampungani --- School of Natural Resources, Zambia CJ Geldenhuys --- Department of Forest and Wood Science, South Africa PW Chirwa --- Faculty of Natural and Agricultural Sciences, South AfricaThe use of fixed-area plot methods was considered unsuitable to compare the responses and recovery over time of different miombo woodland species to different land-use practices (i.e. charcoal production and slash-and-burn agriculture). Young regrowth stages have many stems and the... -
Insights from full-rotation Nelder spacing trials with Eucalyptus in São Paulo, Brazil
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: JL Stape --- Department of Forestry and Environmental Resources, USA D Binkley --- Natural Resource Ecology Laboratory, USAThe choice of spacing among trees for operational plantations is typically based on one or more experimental plantations that test for the response of tree and stand growth to a range of tree-to-tree distances. The most common design for spacing... -
Growth and yield models for Eucalyptus grandis grown in Swaziland
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: M du Plessis --- , South Africa H Kotze --- , South AfricaThe aim of this study was to develop a stand-level growth and yield model for short-rotation Eucalyptus grandis grown for pulp wood production at Piggs Peak in Swaziland. The data were derived from a Nelder 1a spacing trial established with... -
Stand basal area model for Cunninghamia lanceolata (Lamb.) Hook. plantations based on a multilevel nonlinear mixed-effect model across south-eastern China
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: LiFang Zhao --- Center for Earth Observation and Digital Earth, China ChunMing Li --- Institute of Forest Resource Information Techniques, ChinaBased on a multilevel nonlinear mixed-effect model approach, a stand basal area model was developed for Cunninghamia lanceolata (Lamb.) Hook. plantations belonging to the National Forest Inventory in China. The database consists of 583 plots embracing 18 different blocks within... -
Developing allometric equations for estimating leaf area and leaf biomass of Artocarpus chaplasha in Raghunandan Hill Reserve, Bangladesh
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Swapan Kumar Sarker --- Department of Forestry and Environmental Science, Bangladesh Niamjit Das --- Department of Forestry and Environmental Science, Bangladesh Md Qumruzzaman Chowdhury --- Department of Forestry and Environmental Science, Bangladesh Md Mohasinul Haque --- Department of Forestry and Environmental Science, BangladeshEstimation of leaf area (LA) and leaf biomass (LB) is important to understand plant physiological and carbon assimilation processes, and tree growth models. The aim of this study was to develop and compare allometric equations for predicting LA and LB... -
Technical efficiency of small-scale fishing households in Tanzanian coastal villages: an empirical analysis
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: JenniferK Sesabo RichardSJ TolThe effort to conserve fisheries resources and improve the welfare of small-scale fishing households is an important objective of poverty reduction strategies in Tanzania. The success of such strategies depends on both the diversity and the level of efficiency within... -
Declining catch per unit effort of an estuarine-dependent fish, Rhabdosargus sarba (Teleostei: Sparidae), in the marine environment following closure of the St Lucia Estuarine System, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: BruceQ Mann Pierre PradervandMonitoring of catch per unit effort of the tropical stumpnose Rhabdosargus sarba in the St Lucia Marine Reserve between 2001 and 2005 revealed a significant decline. A similar decline was evident from shore patrol data collected by Ezemvelo KwaZulu-Natal Wildlife... -
Mouthpart deformities in Chironomidae (Diptera) as indicators of heavy metal pollution in northern Lake Victoria, Uganda
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: H Ochieng ED de Ruyter van Steveninck FM WandaDue to the absence of appropriate and sensitive tools for monitoring heavy metal pollution in northern Lake Victoria (Uganda), this study investigated mouthpart deformities in chironomid larvae (Diptera) in relation to concentrations of lead, copper, cadmium and zinc in lake... -
Reproductive biology and breeding of Barbus paludinosus and B. trimaculatus (Teleostei: Cyprinidae) in Lake Chilwa, Malawi: implications for fisheries management
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: MA Macuiane --- Department of Aquaculture and Fisheries Sciences, Malawi EKW Kaunda --- Department of Aquaculture and Fisheries Sciences, Malawi DM Jamu --- , Malawi GZ Kanyerere --- Fisheries Research Unit, Department of Fisheries, MalawiBarbus paludinosus and Barbus trimaculatus were sampled in Lake Chilwa and the Mnembo River mouth between February 2004 and January 2005, using nets equivalent to those used commercially, to analyse their reproductive biology and distribution as a basis for recommending... -
First tracking of white stumpnose Rhabdosargus globiceps (Sparidae) in a South African marine protected area
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: CG Attwood PD Cowley SE Kerwath TF Naesje F Økland EB ThorstadThere is a growing recreational fishery for white stumpnose Rhabdosargus globiceps (Sparidae) in Langebaan Lagoon, part of South Africa's West Coast National Park. The upper reaches of the lagoon are protected from fishing, but the extent to which the closure... -
A benthic survey of the rocky reefs off Pondoland, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: L Celliers BQ Mann AHH Macdonald MH SchleyerA subtidal marine biodiversity survey was carried out on shallow reefs (−1m to −30m) in the proclaimed Pondoland Marine Protected Area between Port Edward and Port St Johns, South Africa. A total of 26 benthic reef transects was undertaken involving... -
Area utilisation and activity patterns of roman Chrysoblephus laticeps (Sparidae) in a small marine protected area
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: SE Kerwath A Götz CG Attwood WHH Sauer CG WilkeInformation on the movement of fish is vital to determine the effectiveness of marine protected areas (MPAs) for fish conservation and fisheries management. This study investigates area utilisation and activity patterns of 13 adult roman Chrysoblephus laticeps (Sparidae) using telemetry... -
The effect of marine protected areas on an exploited population of sex-changing temperate reef fish: an individual-based model
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: SE Kerwath A Götz CG Attwood WHH SauerThe effect of two marine protected areas (MPAs) on roman Chrysoblephus laticeps (Sparidae), an exploited reef-fish species inhabiting the South African temperate south coast, was simulated with a spatially explicit, individual-based model based on geographically correct habitat distribution. The model... -
Selected fishery and population parameters of eight shore-angling species in the Tsitsikamma National Park no-take marine reserve
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: A Götz PD Cowley H WinkerAn eight-year research angling dataset collected between February 1998 and December 2005 in the Tsitsikamma National Park marine protected area (MPA), along the south-eastern Cape coast of South Africa, was examined to provide estimates of important fishery and population parameters... -
Socio-economic aspects of the tiger shark diving industry within the Aliwal Shoal Marine Protected Area, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: ML Dicken --- Department of Development Studies, School of Economics, Development and Tourism, South Africa SG Hosking --- Department of Business Studies, School of Economics, Development and Tourism, South AfricaUnderstanding socio-economic aspects of the tiger shark Galeocerdo cuvier diving industry, including information on participant expectations, experiences and expenditure, is necessary for the effective management of the Aliwal Shoal Marine Protected Area on the east coast of South Africa. Between... -
Effects of fishing on a temperate reef community in South Africa 1: ichthyofauna
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 AfricaExploitation of temperate reef fish not only affects the target species but potentially changes the composition of reef fish assemblages. This study investigated the effect of fishing on the ichthyofaunal community at protected and exploited sites around the Goukamma Marine... -
Why do we need to integrate population genetics into South African marine protected area planning?
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: S von der Heyden --- Evolutionary Genomics Group, Department of Botany and Zoology, South AfricaSouth Africa is home to a wide variety of marine flora and fauna distributed over at least three biogeo-graphic provinces. Currently, 9% of the coastline is protected by ‘no-take’ marine protected areas (MPAs), but the distribution of MPAs is uneven... -
Optimisation of underwater visual census and controlled angling methods for monitoring subtidal temperate reef fish communities
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: RH Bennett --- Department of Ichthyology and Fisheries Science, South Africa A Götz --- , South Africa WHH Sauer --- Department of Ichthyology and Fisheries Science, South Africa PD Cowley --- , South Africa RM Palmer --- , South AfricaStandardised sampling protocols for monitoring fish stocks are essential to assess changes in stock status and provide a means to evaluate the effectiveness of fisheries management measures, such as marine protected areas (MPAs). This study aimed to optimise two standard... -
Difference in shade tolerance affects foliage–sapwood response to thinning by two eucalypts
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Rui Ling Yao --- Guangxi Zhuang Autonomous Region Forestry Research Institute, China Kevin Glencross --- Cooperative Research Centre for Forestry and Forestry Program, School of Environment, Science and Engineering, Australia J Doland Nichols --- Cooperative Research Centre for Forestry and Forestry Program, School of Environment, Science and Engineering, AustraliaIn eucalypt plantations in subtropical Australia, Eucalyptus dunnii exhibits greater diameter increment after thinning than more shade-tolerant Corymbia citriodora. To elucidate the mechanism underlying this difference, we investigated relationships between tree leaf area and sapwood area following thinning in 11-year-old... -
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, MalaysiaBackground: 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... -
Emergency Caesarean section in a patient with known sickle-cell disease and myasthenia gravis
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: AA Ehiozie-Osifo --- Department of Anaesthesia, Nigeria JO Olatosi --- Department of Anaesthesia, Nigeria OT Kushimo --- Department of Anaesthesia, NigeriaA 33-year-old patient with known sickle-cell disease (SS) booked for antenatal care at the Lagos University Teaching Hospital at six weeks gestational age. She had been diagnosed with myasthenia gravis three years prior to presentation and placed on oral anticholinesterase... -
Observational study of choice of anaesthesia and outcome in patients with severe pre-eclampsia who present for emergency Caesarean section
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: K Keerath --- King Edward VIII Hospital, L Cronje --- King Edward VIII Hospital,Objectives: Recent evidence in the literature suggests that regional anaesthesia may be the preferred choice over general anaesthesia for patients with severe pre-eclampsia who present for a Caesarean section. This study was conducted to determine if this applied to our... -
Second-stage primary Caesarean deliveries: Are maternal complications increased?
Item type: Journal Article • Journal: South African Family Practice • Authors: J Moodley --- Women's Health and HIV Research Unit and Department of Obstetrics and Gynaecology, J Devjee --- Department of Obstetrics and Gynaecology, SM Khedun --- Women's Health and HIV Research Unit and Department of Obstetrics and Gynaecology, T Esterhuizen --- Programme of Biostatistics, Research Ethics and Medical Law, College of Health Sciences, University of KwaZulu-Natal,Background: Second-stage Caesarean sections (CSs) are known to be associated with increased complications but most reports originate from tertiary hospitals, which attend to high-risk patients. Complication rates may differ in district hospitals, which attend to low-risk patients. -
Rising rates of Caesarean sections: an audit of Caesarean sections in a specialist private practice
Item type: Journal Article • Journal: South African Family Practice • Authors: N Naidoo --- Department of Obstetrics and Gynaecology, J Moodley --- Women's Health and HIV Research Group,Background: Caesarean section (CS) rates are increasing worldwide; rates in the private sector in South Africa are reported to be particularly high. To the best of our knowledge there has been no recent audit of Caesarean sections performed by the... -
Knowledge and awareness of high blood pressure in Ward F, Ifako-Ijaiye local government area, Lagos State, Nigeria
Item type: Journal Article • Journal: South African Family Practice • Authors: YT Akindele --- Community Health and Primary Care Department, Nigeria OO Ayankogbe --- Community Health and Primary Care Department, NigeriaObjectives: In Nigeria, most people living with an elevated blood pressure are unaware of it until they suffer complications. The aim of this study was to determine levels of awareness of high blood pressure in Ward F, Ifako-Ijaiye local government... -
Is there still a role for Caesarean section in preventing vertical HIV transmission in the era of highly active antiretroviral therapy?
Item type: Journal Article • Journal: South African Family Practice • Authors: HM Sebitloane --- Department of Obstetrics and Gynaecology,Human immunodeficiency virus (HIV) may be transmitted from an infected mother to her child during pregnancy, delivery or breastfeeding. Without any intervention, transmission rates may range from 15–45%. However, this can be reduced to < 5% with effective drug therapy... -
Estimating wood volume from canopy area in deciduous woodlands of Zimbabwe
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Tawanda W Gara --- Department of Geography and Environmental Science, Zimbabwe Amon Murwira --- Department of Geography and Environmental Science, Zimbabwe Emmerson Chivhenge --- Department of Geography and Environmental Science, Zimbabwe Timothy Dube --- Discipline of Geography, School of Agricultural, Earth and Environmental Sciences, South Africa Tsitsi Bangira --- SAEON Egagasini Node, South AfricaIn this study we tested the predictive ability of canopy area in estimating wood volume in deciduous woodlands of Zimbabwe. The study was carried out in four sites of different climatic conditions. We used regression analysis to statistically quantify the... -
Marine reserve effects on population density and size structure of commonly and rarely exploited limpets in South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MDV Nakin --- Walter Sisulu University, South Africa CD McQuaid --- Coastal Research Group, Department of Zoology and Entomology, South AfricaMarine reserves are commonly used to conserve living resources, but their effectiveness where policing is difficult is unclear. We compared monthly population density and size structure data collected over 20 months for two rarely and two commonly exploited intertidal limpets... -
Predicting spinal hypotension during Caesarean section
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: David G Bishop --- Pietermaritzburg Metropolitan Department of Anaesthesia, Critical Care and Pain Management, South AfricaHypotension under spinal anaesthesia for Caesarean section remains a common problem, with attendant maternal and foetal morbidity. This review examines some of the issues surrounding the prediction of spinal hypotension, including concerns about current evidence, the debate on the mechanism... -
Wildlife roadkill patterns on a major highway in northern Tanzania
Item type: Journal Article • Journal: African Zoology • Authors: John Kioko --- School for Field Studies, Tanzania Christian Kiffner --- School for Field Studies, Tanzania Nicole Jenkins --- Department of Environmental Studies, Davidson College, USA Wendy J Collinson --- Endangered Wildlife Trust, South AfricaDespite expanding road networks, there is limited understanding of the effects of roads on wildlife in East Africa. We present a baseline survey and describe the patterns of roadkill in the Tarangire–Manyara ecosystem of Tanzania. A 75 km stretch of... -
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 AfricaTen 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... -
Preliminary observations on the diet of leopards (Panthera pardus) from a conservation area and adjacent rangelands in the Baviaanskloof region, South Africa
Item type: Journal Article • Journal: African Zoology • Authors: Theresia Ott --- Centre for African Conservation Ecology, Department of Zoology, South Africa Graham I. H. Kerley --- Centre for African Conservation Ecology, Department of Zoology, South Africa André F. Boshoff --- Centre for African Conservation Ecology, Department of Zoology, South AfricaPastoralists on rangelands adjacent to the Baviaanskloof Provincial Nature Reserve, Eastern Cape, report stock losses through predation by leopards (Panthera pardus). This leads, in certain cases, to persecution of the leopards. This study attempted to quantify livestock depredation by leopards... -
Zonation of benthic communities on the subtropical Aliwal Shoal, Durban, KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: African Zoology • Authors: J. M. Olbers --- Ezemvelo KwaZulu-Natal Wildlife, South Africa L. Celliers --- Oceanographic Research Institute, South Africa M. H. Schleyer --- Oceanographic Research Institute, South AfricaAliwal Shoal is a subtropical, algal-dominated reef in a marine protected area located south of Durban, South Africa. The shoal has historically been heavily utilized by fishermen and SCUBA divers. In this study, a survey was undertaken to describe and... -
Willingness to pay for marine-based tourism in the Ponta do Ouro Partial Marine Reserve, Mozambique
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: CAK Daly --- Department of Economics and Economic History, South Africa G Fraser --- Department of Economics and Economic History, South Africa JD Snowball --- Department of Economics and Economic History, South AfricaMarine and coastal ecosystems face widespread degradation largely because market failure hides the economic value of the goods and services they provide. Marine protected areas (MPAs) can serve as structures that ensure the continued functioning of marine and coastal ecosystem... -
Fire and the dynamics of two unpalatable grass species (Cymbopogon pospischilii and Elionurus muticus) in a semi-arid climate
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Hennie A Snyman --- Animal, Wildlife and Grassland Sciences, South AfricaCymbopogon pospischilii and Elionurus muticus are unpalatable for most of the growing season and form a reasonably large component of the vegetation composition in semi-arid grassland areas. The influence of an accidental fire on the dynamics of these two grass... -
Effect of rootstock on ‘Forelle’ pear (Pyrus communis L.) growth and production
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Michael North --- Agricultural Research Council Infruitec-Nietvoorbij, South Africa Kobus de Kock --- Agricultural Research Council Infruitec-Nietvoorbij, South Africa Mardé Booyse --- Agricultural Research Council Infruitec-Nietvoorbij, South AfricaEuropean pears (Pyrus communis L.) are predominantly planted either on pear (P. communis) or quince (Cydonia oblonga L.) rootstocks. High-density commercial pear orchards require dwarfing rootstocks and the South African selections BP1 and BP3 were considered too vigorous. The growth... -
IFRS 3 “grey area” regarding contingent liabilities
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: Eloise de Jager --- Department of Accounting, South AfricaAll South African listed companies must prepare their financial statements using International Financial Reporting Standards (IFRS). Although IFRS aims to provide a framework that can be applied to ensure comparable financial information, there are “grey areas” where judgement needs to... -
The development of a scoring tool for the measurement of performance in managing hypotension and intra-operative cardiac arrest during spinal anaesthesia for caesarean section
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: Garth Horsten --- Discipline of Anaesthesia and Critical Care, Inkosi Albert Luthuli Central Hospital, Nelson R. Mandela School of Medicine, South Africa Robert Wise --- Pietermaritzburg Metropolitan Department of Anaesthetics, South Africa Shaun Ramroop --- Department of Statistics and Biometry, School of Mathematics, Statistics and Computer Science, South Africa Reitze Rodseth --- Pietermaritzburg Metropolitan Department of Anaesthetics, South AfricaBackground: At level one hospitals in South Africa a high annual number of maternal deaths occur due to the unrecognised/untreated complications of spinal anaesthesia. The authors developed a clinical scenario and scoring system to measure intern performance in managing hypotension... -
Intern to independent doctor: basic surgical skills required for South African practice and interns’ reports on their competence
Item type: Journal Article • Journal: South African Family Practice • Authors: Frank Peters --- Department of Family Medicine,, South Africa Jacky van Wyk --- Nelson R Mandela School of Medicine, South Africa Marietjie van Rooyen --- Department of Family Medicine,, South AfricaBackground: The role and scope of general practitioners in semi-urban and rural areas is poorly understood and documented. An absence of specialist support results in generalists being called to perform surgical procedures. It is imperative that they competently and confidently... -
Establishing Cynodon dactylon on mining tailings and mining-impacted soil of a copper–cobalt mine in the Democratic Republic of the Congo
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: JE Granger --- SAEON, South Africa TG O'Connor --- SAEON, South AfricaMining for copper and cobalt generates extensive mounds of removed topsoil and subsoil, and tailings with toxic levels of copper and cobalt. The threat of soil erosion in a high rainfall regime can be countered with rapid establishment of a... -
Differences in the average Caesarean section rate across levels of hospital care in Gauteng, South Africa
Item type: Journal Article • Journal: Southern African Journal of Infectious Diseases • Authors: R. Nathan --- Department of Community Medicine, P G D W Rautenbach --- Department of Community Medicine,Caesarean section rate is expressed as a percentage, and is calculated by dividing the total number of Caesarean sections by the total number of deliveries within a specifed period. This indicator is used to track obstetric performance. The objective of... -
Assessment of noise pollution from electricity generators in a high-density residential area
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Nwasinachi U. Menkiti --- Centre for Environmental Management and Control, Nigeria Jonah C. Agunwamba --- Centre for Environmental Management and Control, NigeriaNoise pollution associated with household electricity generators is an emerging environmental degradation in many developing nations. The aim of this study is to evaluate noise pollution from the use of household electricity generators in a high-density residential area. A survey... -
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 AfricaThe 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... -
Embodied urban health and illness in Cape Town: children's reflections on living in Symphony Way Temporary Relocation Area
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Efua Prah --- Department of Anthropology and Sociology, South AfricaThis paper explores ideas about health and illness held by six children who live in the Symphony Way Temporary Relocation Area in Cape Town, South Africa. The research shows that solutions to illness and health problems held by low-income populations... -
Graded epidural anaesthesia for Caesarean section in a parturient with Shone’s syndrome: a case study
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: Anjum Naz --- Department of Anaesthesiology and Intensive Care, India Sugata Dasgupta --- Department of Anaesthesiology and Intensive Care, India Bijoy Kumar Bandyopadhyay --- Department of Anaesthesiology and Intensive Care, India Hasibul Hasan Shirazee --- Department of Obstetrics and Gynaecology, IndiaPregnancy with underlying heart disease is a unique challenge both to the obstetrician and the anesthesiologist. Asymptomatic women with mild to moderate single lesions can successfully carry a pregnancy to term and undergo vaginal delivery. However, pregnancy can result in... -
Using independent nest survey data to validate changes in reporting rates of Martial Eagles between the Southern African Bird Atlas Project 1 and 2
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Arjun Amar --- DST–NRF Centre of Excellence at the Percy FitzPatrick Institute of African Ornithology, South Africa Daniël Cloete --- DST–NRF Centre of Excellence at the Percy FitzPatrick Institute of African Ornithology, South Africa Madel Whittington --- Birds of Prey Programme, Endangered Wildlife Trust, Nossob camp, South AfricaRepeat monitoring is vital to measure biodiversity change. However, monitoring protocols may change, as survey techniques improve or different questions are asked. Such modifications may cause difficulties when examining changes in wildlife populations. The Southern African Bird Atlas Project (SABAP)... -
Caesarean section in Eisenmenger’s syndrome: anaesthetic management with titrated epidural and nebulised alprostadil
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: Sugata Dasgupta --- Division of Critical Care Medicine, Department of Anaesthesiology & Critical Care Medicine, India Soumi Das --- Department of Cardiac Anaesthesiology, India Biswajit Majumdar --- Department of Cardiology, India SM Basu --- Former Professor & Head, Calcutta National Medical College, IndiaPregnancy in patients with Eisenmenger’s syndrome is associated with a high mortality. This article reports two cases of women with Eisenmenger’s syndrome (secondary to two different primary cardiac defects) who presented with near-term pregnancies. Both the patients underwent successful elective... -
Growth rate of speckled snapper Lutjanus rivulatus (Teleostei: Lutjanidae) based on tag-recapture data from the iSimangaliso Wetland Park, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: BQ Mann --- Oceanographic Research Institute, South Africa B Lee --- Fisheries Department, Falkland Islands Government, Falkland Islands PD Cowley --- South African Institute for Aquatic Biodiversity, South AfricaThe growth rate of speckled snapper Lutjanus rivulatus was investigated using data from a long-term tag-recapture study conducted in the St Lucia Marine Reserve within the iSimangaliso Wetland Park, a World Heritage Site in northern KwaZulu-Natal, South Africa. A total... -
Characteristics and factors influencing fast food intake of young adult consumers in Johannesburg, South Africa
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Mk Van Zyl --- Woolworths South Africa (Pty) Ltd, South Africa Np Steyn --- Knowledge Systems, South Africa Ml Marais --- Division of Human Nutrition, South AfricaObjectives: To determine fast food consumption patterns, socio-economic characteristics and other factors that influence the fast food intake of young adults from different socio-economic areas in Johannesburg, South Africa. -
Scientometric assessment of selected R&D priority areas in South Africa: A comparison with other BRICS countries
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Xolani Makhoba --- Institute of Technological Innovation, Graduate School of Technology Management, Pretoria South Africa Anastassios Pouris --- Institute of Technological Innovation, Graduate School of Technology Management, Pretoria South AfricaA scientometric analysis of selected research priority areas in South Africa was done using the Web of Science database for the period 2002–2012. The performance of the country in the areas of biotechnology, energy, astronomy and palaeontology in terms of... -
Different drivers create spatial vegetation cover and vertical structure in semi-arid African savannas
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Rheinhardt Scholtz --- Scientific Services, South African National Parks, South Africa Gregory A Kiker --- Department of Agricultural and Biological Engineering, USA Gregory D Duckworth --- Department of Statistics, South Africa Ursula M Scharler --- School of Life Sciences, South Africa Henry G Mwambi --- School of Mathematics, Statistics and Computer Science, South Africa Frederick J Venter --- Conservation Management, South AfricaImportant drivers of woody cover in African savannas are rainfall, soil and nutrients, and disturbance factors, such as fire and herbivory. However, very little is known about how these drivers influence woody cover at specific height classes. The main aim... -
Subtropical demersal fish communities on soft sediments in the KwaZulu-Natal Bight, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: ST Fennessy --- Oceanographic Research Institute, South AfricaThe project entitled Ecosystem Processes in the KwaZulu-Natal Bight, part of the African Coelacanth Ecosystem Programme (ACEP), enabled the description of demersal fish communities over soft sediments, including from some areas that have rarely been explored in the subtropical waters... -
Vachellia karroo leaf meal: a promising non-conventional feed resource for improving goat production in low-input farming systems of Southern Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: E Monday Idamokoro --- Department of Livestock and Pasture Science, South Africa Patrick J Masika --- Department of Livestock and Pasture Science, South Africa Voster Muchenje --- Department of Livestock and Pasture Science, South AfricaAmong a vast number of forage trees, Vachellia karroo (Acacia karroo) remains one of the most widely distributed indigenous plant legumes in Southern Africa. The plant possesses some striking attributes, such as rapid growth rate, drought tolerance, adaptation to alkaline... -
Protection of marine birds and turtles at St Brandon’s Rock, Indian Ocean, requires conservation of the entire atoll
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: SW Evans --- Research Unit: Environmental Sciences and Management, South Africa N Cole --- Durrell Wildlife Conservation Trust, Les Augrès Manor, Channel Islands H Kylin --- Research Unit: Environmental Sciences and Management, South Africa NS Choong Kwet Yive --- Department of Chemistry, V Tatayah --- Mauritian Wildlife Foundation, Mauritius J Merven --- Raphael Fishing Co. Ltd, Mauritius H Bouwman --- Research Unit: Environmental Sciences and Management, South AfricaA survey of seabirds and turtles at St Brandon’s Rock, 400 km north of Mauritius, was undertaken in 2010. We estimated that 1 084 191 seabirds comprising seven breeding species and excluding non-breeders were present at the archipelago and we... -
Dark times for dageraad Chrysoblephus cristiceps: evidence for stock collapse
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: D Parker --- Department of Biological Sciences, South Africa H Winker --- South African National Biodiversity Institute, South Africa CG Attwood --- Department of Biological Sciences, South Africa SE Kerwath --- Department of Biological Sciences, South AfricaThe declaration of a state of emergency in the South African linefishery in 2000 has had a positive impact on a few overexploited endemic seabreams (Family Sparidae). However, the population of the reef-dwelling dageraad Chrysoblephus cristiceps has been unresponsive to... -
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 AfricaLimiting 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,... -
Incidence of intraoperative nausea and vomiting during spinal anaesthesia for Caesarean section in two Cape Town state hospitals
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: BJ Magni --- Department of Anaesthesia and Perioperative Medicine, South Africa RA Dyer --- Department of Anaesthesia and Perioperative Medicine, South Africa D van Dyk --- Department of Anaesthesia and Perioperative Medicine, South Africa J van Nugteren --- Department of Anaesthesia and Perioperative Medicine, South Africa -
Effects of marine reserves on the reproductive biology and recruitment rates of commonly and rarely exploited limpets
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MDV Nakin --- Biological and Environmental Sciences Department, South Africa CD McQuaid --- Coastal Research Group, Department of Zoology and Entomology, South AfricaWe tested the effects of marine reserve status on the reproductive biology and recruitment rates of two commonly exploited (Helcion concolor, Scutellastra longicosta) and two rarely exploited (Cellana capensis, Scutellastra granularis) limpet species using two reserve and two non-reserve sites... -
Is there a trade-off in resource allocation to condensed tannins and thorn defences in Vachellia (Acacia) species?
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Allan Sebata --- Department of Forest Resources and Wildlife Management, ZimbabweAcacia species invest in condensed tannins (CT) and thorn defences among others. Plant defences are considered costly because they use resources that would otherwise be available for growth and reproduction. To reduce plant defence costs it has been argued that... -
Changes in vegetation structure and aboveground biomass in response to traditional rangeland management practices in Borana, southern Ethiopia
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Bikila Negasa Gilo --- Yabello Pastoral and Dryland Agriculture Research Center, Ethiopia Tessema Zewdu Kelkay --- Rangeland Ecology and Biodiversity Program, College of Agriculture and Environmental Sciences, EthiopiaThis study aimed to determine vegetation structure, species diversity and aboveground herbaceous biomass and browse yields in Borana rangelands of southern Ethiopia. Sampling through random allocation of quadrats within replicated sample plots was undertaken in communally grazed areas, grazing enclosures... -
Greenhouse gas inventory: A case of gas flaring operations in Nigeria
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Solomon O. Giwa --- Department of Agricultural and Mechanical Engineering, Nigeria Abayomi T. Layeni --- Department of Agricultural and Mechanical Engineering, Nigeria Collins N. Nwaokocha --- Department of Agricultural and Mechanical Engineering, Nigeria Musedik A. Sulaiman --- Department of Agricultural and Mechanical Engineering, NigeriaInventories of the greenhouse gases (GHGs) emitted into the atmosphere through gas flaring are scarce; hence, the need for this study. Formulae reported by the Association of Petroleum Institute were used for estimating GHGs based on data (1965 to 2013)... -
Ghost crab burrow density at Watamu Marine National Park: An indicator of the impact of urbanisation and associated disturbance?
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: HFR Hereward --- School of Animal, Rural and Environmental Sciences, UK LK Gentle --- School of Animal, Rural and Environmental Sciences, UK ND Ray --- School of Animal, Rural and Environmental Sciences, UK RD Sluka --- A Rocha Kenya, KenyaGhost crab (Ocypode species) burrow densities have previously been used as an indicator of anthropogenic impact. This study aimed to assess the burrow density of Ocypode species (O. ryderi and O. cordimanus) at four sites across Watamu Marine National Park,... -
Factors associated with failed spinal anaesthesia for Caesarean sections in Mthatha general hospital, Eastern Cape, South Africa
Item type: Journal Article • Journal: South African Family Practice • Authors: Adeyinka Abiodun Alabi --- Department of Family Medicine, South Africa Oladele Vincent Adeniyi --- Department of Family Medicine, South Africa Olukayode Ademola Adeleke --- Department of Family Medicine, South Africa Pamela Pillay --- School of Laboratory Medicine & Medical Sciences, Department of Anatomy, South Africa Mohamed Rashid Haffajee --- School of Laboratory Medicine & Medical Sciences, Department of Clinical Anatomy, South AfricaBackground: The use of spinal anaesthesia has increased in the last three decades, given that it is the recommended anaesthetic of choice for better foetal and maternal outcomes in Caesarean section. Failed spinal anaesthesia (FSA) exposes patients to unfavourable experience... -
Observation of the pulse oximeter trace to estimate systolic blood pressure during spinal anaesthesia for Caesarean section: the effect of body mass index
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: T Samuel --- Department of Anaesthesia and Perioperative Medicine, South Africa D van Dyk --- Department of Anaesthesia and Perioperative Medicine, South Africa CJ Lombard --- Biostatistics Unit, South Africa RA Dyer --- Department of Anaesthesia and Perioperative Medicine, South AfricaBackground: The estimation of systolic blood pressure by disappearance and reappearance of the pulse oximeter trace during cuff inflation and deflation was compared with non-invasive blood pressure (NIBP) measurement, across the range of body mass index (BMI), during spinal anaesthesia... -
Transversus abdominis plane block after Caesarean section in an area with limited resources
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: Desale Tewelde Kahsay --- Department of Anesthesia and Critical Care, Eritrea Waltraud Elsholz --- Department of Anesthesia and Critical Care, Eritrea Habteselassie Zerezghi Bahta --- Department of Obstetrics and Gynecology, EritreaBackground: The primary objective of this study was to assess whether transversus abdominis plane (TAP) block is effective as part of multimodal pain management following Caesarean section in an area with limited resources. The study also looked at the advantage... -
Population structure of the sicklefin lemon shark Negaprion acutidens within the Curieuse Marine National Park, Seychelles
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: RD Hodgkiss --- Global Vision International Seychelles, Seychelles A Grant --- Global Vision International Seychelles, Seychelles JHR McClelland --- Global Vision International Seychelles, Seychelles R Quatre --- Seychelles National Parks Authority, Seychelles B Rademakers --- Global Vision International Seychelles, Seychelles C Sanchez --- Nature Seychelles, Seychelles C Mason-Parker --- Global Vision International Seychelles, SeychellesThis study produced the first data on population parameters for sicklefin lemon shark Negaprion acutidens at the granitic Seychelles Islands, adding to a limited catalogue of species information. Juveniles at a site in the Curieuse Marine National Park were tagged... -
Predicting site productivity of the timber tree Pterocarpus angolensis
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Vera De Cauwer --- Faculty of Natural Resources and Spatial Sciences, Namibia Esther Fichtler --- Tropical Plant Production and Agricultural Systems Modelling, Department of Crop Sciences, Germany Hans Beeckman --- Service of Wood Biology, Belgium F Patrick Graz --- Faculty of Natural Resources and Spatial Sciences, Namibia Jan Mertens --- Department of Applied Biosciences, Belgium Sam Van Holsbeeck --- Department of Applied Biosciences, Belgium Bart Muys --- Division of Forest, Nature and Landscape, BelgiumPterocarpus angolensis is an important timber tree of the miombo woodlands of sub-Saharan Africa. The species only grows in natural mixed forests and little is known about is productivity potential. This study aimed at investigating productivity of P. angolensis on... -
Changes in forest cover and carbon stocks of the coastal scarp forests of the Wild Coast, South Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Kagiso Mangwale --- Department of Environmental Science, South Africa Charlie M Shackleton --- Department of Environmental Science, South Africa Ayanda Sigwela --- R3G, South AfricaLand-use intensification and declines in vegetative cover are considered pervasive threats to forests and biodiversity globally. The small extent and high biodiversity of indigenous forests in South Africa make them particularly important. Yet, relatively little is known about their rates... -
Preoperative predictors of thrombocytopenia in Caesarean delivery: is routine platelet count testing necessary?
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: Lulama Nkomentaba --- Nelson R. Mandela School of Medicine, Discipline of Anaesthesia and Critical Care, South Africa David G Bishop --- Perioperative Research Group, Department of Anaesthetics, South Africa Reitze N Rodseth --- Perioperative Research Group, Department of Anaesthetics, South AfricaBackground: Peri-partum thrombocytopenia significantly impacts anaesthetic technique and increases the risk of perioperative bleeding. However, as less than 5% of normal pregnancies have significant thrombocytopenia, routine platelet testing incurs great cost for a relatively low yield. Determining whether clinical predictors,... -
A first-approximation simple dynamic growth model for forest teak plantations in Gujarat state of India
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Vindhya Prasad Tewari --- Himalayan Forest Research Institute, India Bilas Singh --- Arid Forest Research Institute, IndiaTectona grandis (teak) is one of the most important tropical timber species occurring naturally in India. In India, teak is the single most important commercial timber species. Scientifically sound growth models, based on advanced modelling techniques, are often not available,... -
Inventive activity and knowledge flows in the Mediterranean area: A social network analysis based investigation approach
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Massimiliano Ferrara --- Mediterranean University of Reggio Calabria, Italy Roberto Mavilia --- University for Foreigners ‘Dante Alighieri’, MEDAlics, Via del Torrione 95, Italy Francesca Larosa --- University for Foreigners ‘Dante Alighieri’, MEDAlics, Via del Torrione 95, ItalyThis paper investigates the collaboration of inventive activities at firm level in the Mediterranean area by investigating, through social network analysis, the collaboration between the two shores of Mediterranean area. Using patent data, our aim is to capture some relevant... -
Monitoring Victoria’s public forests: implementation of the Victorian Forest Monitoring Program
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Andrew Haywood --- European Forest Institute, Spain Kristen Thrum --- Victorian Department of Environment, Land, Water and Planning, Australia Andrew Mellor --- School of Mathematical and Geospatial Sciences, Australia Christine Stone --- New South Wales Department of Primary Industries, AustraliaA new strategic inventory across all publicly managed forests has been installed in Victoria. For the preceding two decades, Victoria’s forest inventory has been compiled from various data sources from across the state, an approach that doesn’t allow information about... -
Nesting biology and food habits of the endangered Sakalava Rail Amaurornis olivieri in the Mandrozo Protected Area, western Madagascar
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Yverlin Z Pruvot --- The Peregrine Fund Madagascar Project, Madagascar Lily-Arison René de Roland --- The Peregrine Fund Madagascar Project, Madagascar Gilbert Razafimanjato --- The Peregrine Fund Madagascar Project, Madagascar Marius PH Rakotondratsima --- The Peregrine Fund Madagascar Project, Madagascar Aristide Andrianarimisa --- Department of Zoology and Biodiversity, Faculty of Science, Madagascar Russell Thorstrom --- The Peregrine Fund, USAWe studied the nesting biology and food habits of the endangered and endemic Sakalava Rail Amaurornis olivieri from July to November 2015 in the Mandrozo Protected Area, western Madagascar. Three nesting pairs were observed and their nests were constructed in... -
Seasonal variations in the diet and food selection of the Algerian hedgehog Atelerix algirus
Item type: Journal Article • Journal: African Zoology • Authors: Chafika Mouhoub-Sayah --- Laboratoire de Zoologie Appliquée et d’Ecophysiologie Animale, Faculté des Sciences de la Nature et de la Vie, Algeria Hafsa Djoudad-Kadji --- Laboratoire de Zoologie Appliquée et d’Ecophysiologie Animale, Faculté des Sciences de la Nature et de la Vie, Algeria Florian Kletty --- Université de Strasbourg, CNRS, IPHC, France André Malan --- Institut des Neurosciences Cellulaires et Intégratives, France Jean-Patrice Robin --- Université de Strasbourg, CNRS, IPHC, France Michel Saboureau --- Institut des Neurosciences Cellulaires et Intégratives, France Caroline Habold --- Université de Strasbourg, CNRS, IPHC, FranceThe Algerian hedgehog Atelerix algirus is an insectivorous species. However, the exact composition of its natural diet remains largely undetermined, especially in relation to seasonal variations in food availability. From March to November, we simultaneously analysed the composition of 180... -
Hunting flight speeds of five southern African raptors
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Lorinda A Hart --- School of Life Sciences, South Africa Erin P Wreford --- School of Life Sciences, South Africa Mark Brown --- School of Life Sciences, South Africa Colleen T Downs --- School of Life Sciences, South AfricaThe flight speeds of hunting falconry birds were determined using global positioning system data loggers. Until now, the hunting flight speed of African raptors has not been directly measured. We predicted that hunting flight speeds would differ between species and... -
Quantifying the largest aggregation of giant trevally Caranx ignobilis (Carangidae) on record: implications for management
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: R Daly --- Port Elizabeth Museum at Bayworld, South Africa CAK Daly --- Save Our Seas Foundation (SOSF) D’Arros Research Centre, Switzerland RH Bennett --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa PD Cowley --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa MAM Pereira --- Centro Terra Viva, Mozambique JD Filmalter --- South African Institute for Aquatic Biodiversity (SAIAB), South AfricaThe giant trevally Caranx ignobilis (Forsskål) is an important apex predatory fish typically associated with coral reef communities. It is prized in recreational and commercial fisheries, yet little is known about its aggregation dynamics and susceptibility to fishing pressure. This... -
Coral reefs of the Glorieuses Islands, western Indian Ocean
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MH Schleyer --- Oceanographic Research Institute (ORI), South Africa L Bigot --- Laboratoire d’ Écologie Marine Tropicale dans les Océans Pacifique et Indien (ENTROPIE), France Y Benayahu --- School of Zoology, George S. Wise Faculty of Life Sciences, IsraelThe benthic fauna on reefs around the Glorieuses Islands, a small and protected Indian Ocean archipelago northwest of Madagascar, was surveyed in November 2015, focusing particularly on the orders Alcyonacea (soft corals and gorgonians) and Scleractinia (stony corals). The species... -
Spotted hyaena visitation at anthropogenic sites in the Kruger National Park, South Africa
Item type: Journal Article • Journal: African Zoology • Authors: LE Belton --- Mammal Research Institute, Department of Zoology and Entomology, South Africa EZ Cameron --- Mammal Research Institute, Department of Zoology and Entomology, South Africa F Dalerum --- Mammal Research Institute, Department of Zoology and Entomology, South AfricaMany large carnivores are attracted to anthropogenic sites, typically, because they offer easy access to anthropogenic resources, such as garbage. Such behaviour could lead to increased contacts between people and carnivores, with the potential for escalated conflicts. Within protected areas,... -
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 AfricaThis 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... -
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 AfricaThe 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... -
Hypotension during spinal anaesthesia for Caesarean section in a resource-limited setting: towards a consensus definition
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: SF Zwane --- Discipline of Anaesthesia and Critical Care, South Africa DG Bishop --- Department of Anaesthetics, Critical Care and Pain Management, South Africa RN Rodseth --- Department of Anaesthetics, Critical Care and Pain Management, South AfricaBackground: Intraoperative hypotension following spinal anaesthesia for Caesarean section is associated with maternal morbidity and mortality. Because of inconsistent definitions the reported incidence of hypotension varies between 7% and 74%, making it almost impossible to set standard targets. Developing and... -
Densities and population sizes of raptors in Uganda’s conservation areas
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Derek Pomeroy --- Department of Zoology, Uganda Micheal Kibuule --- Department of Zoology, Uganda Dianah Nalwanga --- NatureUganda, Uganda George Kaphu --- Uganda Wildlife Authority, Uganda Michael Opige --- NatureUganda, Uganda Phil Shaw --- School of Biology, UKProjected increases in Africa's human population over the next 40 years point to further, large-scale conversion of natural habitats into farmland, with far-reaching consequences for raptor species, some of which are now largely restricted to protected areas (PAs). To assess... -
Estimating evapotranspiration in semi-arid rangelands: connecting reference to actual evapotranspiration and the role of soil evaporation
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Onalenna Gwate --- Institute for Water Research, Rhodes University, South Africa Sukhmani K Mantel --- Institute for Water Research, Rhodes University, South Africa Andiswa Finca --- Agricultural Research Council–Animal Production Institute, South Africa Lesley A Gibson --- School of Engineering, UK Zahn Munch --- Department of Geography and Environmental Studies, South Africa Anthony R Palmer --- Institute for Water Research, Rhodes University, South AfricaIn a context of water scarcity, efforts to increase landscape production should focus on improving water productivity. This requires an appreciation of the various components of evapotranspiration (ET), including soil evaporation (Es) because the latter reflects ‘unproductive’ water loss. Both... -
Growth in three Karoo shrub species under various grazing treatments: the tracking of marked individuals over 25 years
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Helga van der Merwe --- South African Environmental Observation Network (SAEON): Arid Lands Node, South Africa Suzanne J Milton --- South African Environmental Observation Network (SAEON): Arid Lands Node, South AfricaGrowth studies of long-lived shrubs are uncommon. In semi-arid rangelands, livestock and wildlife grazing influence growth processes and may interact with changing climate. Tierberg-LTER, excluded from livestock since 1987, and two adjacent ranches allowed for a comparative growth study of... -
A comparative analysis of the morphology and nutritive value of five South African native grass species grown under controlled conditions
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Khuliso E Ravhuhali --- Department of Animal Science, School of Agricultural Sciences, Faculty of Natural and Agricultural Sciences, South Africa Victor Mlambo --- School of Agricultural Sciences, Faculty of Agriculture and Natural Sciences, South Africa Tefera S Beyene --- Department of Livestock and Pasture Science, South Africa Lobina G Palamuleni --- Department of Geography and Remote Sensing, School of Environmental and Health Sciences, Faculty of Agriculture, South AfricaThe comparative growth habits and nutritive value of native grass species of South Africa are largely unknown despite the utility of this information in rangeland restoration efforts. This article presents a comparative characterisation of the morphology, chemical composition and in... -
Satisfaction with spinal anaesthesia for Caesarean section at Tembisa Hospital, South Africa: a cross-sectional study
Item type: Journal Article • Journal: South African Family Practice • Authors: Uziele M Makoko --- Anesthesiology Department, Tembisa Hospital, South Africa Lebitsi M Modiba --- Department of Public Health, University of South Africa (UNISA), South Africa Doudou K Nzaumvila --- Dr George Mukhari Academic Hospital/Family Medicine & Primary Health Care Department, Sefako Makgatho Health Sciences University (SMU), South AfricaBackground: The most recommended type of anaesthesia by many obstetric guidelines for Caesarean section (CS) is spinal anaesthesia. This to achieve a higher level of pain and comfort control for the patient during and after CS. Little scientific research has... -
Bathymetry, substrate and fishing areas of Southeast Atlantic high-seas seamounts
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: OA Bergstad --- Institute of Marine Research (IMR), Norway ÅS Høines --- Institute of Marine Research (IMR), Norway R Sarralde --- Instituto Espanol de Oceanografia, Centro Oceanografico de Canarias, Spain G Campanis --- South East Atlantic Fisheries Organisation (SEAFO), Namibia M Gil --- Departamento de Ecología y Biología Animal, Edificio de Ciencias Experimentales, Spain F Ramil --- Departamento de Ecología y Biología Animal, Edificio de Ciencias Experimentales, Spain E Maletzky --- Ministry of Fisheries and Marine Resources, Namibia E Mostarda --- Food and Agriculture Organization of the United Nations (FAO), Italy L Singh --- Branch: Fisheries Management, Department of Agriculture, Forestry and Fisheries (DAFF), South Africa MA António --- Secretary of State of Affairs, Ministry of Agriculture, Rural Development and Fisheries, AngolaMost of the Southeast Atlantic Ocean is abyssal, and global bathymetries suggest that only ∼3.2% of the areas beyond national jurisdiction (ABNJ; also known as the high seas, as defined in the United Nations Convention on the Law of the... -
Movement patterns of an endemic South African sparid, the black musselcracker Cymatoceps nasutus, determined using mark-recapture methods
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: TS Murray --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa PD Cowley --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa BQ Mann --- Oceanographic Research Institute (ORI), South Africa JQ Maggs --- Oceanographic Research Institute (ORI), South Africa G Gouws --- South African Institute for Aquatic Biodiversity (SAIAB), South AfricaThis study made use of data from three long-term fish tagging projects along the South African coastline to investigate the movement behaviour of the endemic black musselcracker Cymatoceps nasutus (Sparidae). From 1984 to 2016, a total of 3 430 C... -
Protected nearshore shallow and deep subtidal rocky reef communities differ in their trophic diversity but not their nutritional condition
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: ER Heyns-Veale --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa NB Richoux --- Department of Zoology and Entomology, South Africa ATF Bernard --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa A Götz --- Elwandle Node, South African Environmental Observation Network (SAEON), South AfricaLarge physical changes that alter reef macrobenthos and fish assemblages occur with increasing depth, so the biological processes that regulate communities at different depths are expected to diverge. We used analyses of stable isotopes (δ13C and δ15N) and fatty acids... -
Performance and participatory evaluation of green gram genotypes in the semi-arid environments of Eastern Kenya
Item type: Journal Article • Journal: East African Agricultural and Forestry Journal • Authors: R Karimi --- Crop Improvement, Kenya RM Nair --- Legume Breeding, India D Ledesma --- Biometric, Taiwan DL Mutisya --- Crop Improvement, Kenya L Muthoni --- Socio-Economics, KenyaGreen gram (Vigna radiata (L.) R Wilczek var. radiata) is an important pulse in the climatically marginal areas of Eastern Kenya. The pulse is cultivated primarily for food grain and income generation. Its productivity in Eastern Kenya has declined, because... -
Assessment of Differences in Small Farmer Uses of Produce and Determinants of Marketed Surplus of Green Grams and Pigeon Peas in Semi-arid Machakos County, Kenya
Item type: Journal Article • Journal: East African Agricultural and Forestry Journal • Authors: John Mulwa Wambua --- Department of Agricultural Economics and agribusiness, Kenya Margaret Ngigi --- Department of Agricultural Economics and agribusiness, Kenya Lutta Muhammad --- Kenya Agricultural and Livestock Research Organization, KenyaSmall farmers in semi-arid areas of eastern Kenya produce green grams and pigeon peas for both subsistence and income. Because of this, it was important for a detailed investigation on the difficulty of raising marketed surplus (produce) of green grams... -
The socioeconomic impact of rural-origin graduates working as healthcare professionals in South Africa
Item type: Journal Article • Journal: South African Family Practice • Authors: Richard Gavin McGregor --- Umthombo Youth Development Foundation, South Africa Andrew John Ross --- College of Health Sciences Discipline of Family Medicine, South Africa Ganzamungu Zihindula --- Umthombo Youth Development Foundation, South AfricaBackground: Studies documenting the socioeconomic impact of education leading to employment of rural youth, specifically in the healthcare professions, are lacking. The Umthombo Youth Development Foundation (UYDF) is an NGO that provides financial support for rural students to train as... -
Nurturing forest resources in the Vhavenda community, South Africa: factors influencing non-compliance behaviour of local people to state conservation rules
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Mulugheta G Araia --- Forest Science Postgraduate Programme, Department of Plant and Soil Sciences, South Africa Paxie W Chirwa --- Forest Science Postgraduate Programme, Department of Plant and Soil Sciences, South AfricaThis comparative study analysed the compliance behaviour of local communities towards culturally protected areas and state-protected indigenous forests. Interviews were conducted with 135 households from four villages. Data analysis was done using non-parametric tests. All villages did not significantly differ... -
Oxygen and temperature influence the distribution of deepwater Cape hake Merluccius paradoxus in the southern Benguela: a GAM analysis of a 10-year time-series
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: FL Mbatha --- Department of Biological Sciences and Marine Research Institute, South Africa D Yemane --- Department of Biological Sciences and Marine Research Institute, South Africa M Ostrowski --- Institute of Marine Research (IMR), Norway CL Moloney --- Department of Biological Sciences and Marine Research Institute, South Africa MR Lipiński --- Department of Ichthyology and Fisheries Science, South AfricaGeneralised additive models (GAMs) were applied to survey data to assess the influence of dissolved oxygen, water temperature and year of sampling upon the presence/absence of small (≤15 cm TL), medium (16–34 cm TL) and large (≥35 cm TL) size... -
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 StatesThe 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... -
The avifauna, conservation and biogeography of the Njesi Highlands in northern Mozambique, with a review of the country’s Afromontane birdlife
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Samuel EI Jones --- School of Biological Sciences, United Kingdom Gabriel A Jamie --- Biodiversity Inventory for Conservation, Belgium Emidio Sumbane --- Biodiversity Inventory for Conservation, Belgium Merlijn Jocque --- Biodiversity Inventory for Conservation, BelgiumNorthern Mozambique’s ‘sky-island’ mountains have become increasingly recognised for their Afromontane birdlife. Despite growing ornithological coverage, however, several Mozambican mountains remain poorly known. We present results from a three-week survey of three such mountains: the Njesi Plateau, Mount Chitagal and... -
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, CanadaConservation 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,... -
Use of openly available occurrence data to generate biodiversity maps within the South African EEZ
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: D Yemane --- Department of Environment, Forestry and Fisheries (DEFF), South Africa SP Kirkman --- Department of Environment, Forestry and Fisheries (DEFF), South Africa T Samaai --- Department of Environment, Forestry and Fisheries (DEFF), South AfricaBiodiversity maps are an important component of ecosystem-based management and conservation. In the past, biodiversity maps were largely generated using patchy occurrence data from a range of data sources. Currently, substantial species occurrence data are readily available for large parts... -
The developmental growth and quality assessment of five selected cultivars of baby spinach grown in Gauteng province, South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Nature M Masufi --- Department of Agriculture and Animal Health, South Africa Ambani R Mudau --- Department of Life and Consumer Science, South Africa Hintsa T Araya --- ARC-Roodeplaat, Vegetable and Ornamental Plants, South Africa Fhatuwani N Mudau --- Department of Agriculture and Animal Health, South AfricaBaby spinach is a relatively new crop in South Africa that has commercial significance in retail stores. Currently, seed companies have developed varieties that have not been evaluated locally. Thus, the aim of this study was to investigate the growth,... -
Monitoring the effects of spatial protection on the reef fish communities of the Pondoland Marine Protected Area, Eastern Cape Province, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: BQ Mann --- , South Africa JQ Maggs --- , New Zealand SN Porter --- , South Africa WN Dalton --- , South AfricaMonitoring marine protected areas (MPAs) is critical for evaluating their effectiveness and for improving management. In this study, a single-camera baited remote underwater video system (mono-BRUVS) was deployed quarterly at four sites (10–30-m depths) to quantify the reef fish communities... -
Income poverty versus multidimensional poverty: Empirical insight from Qwaqwa
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Rachel Nishimwe-Niyimbanira --- , South AfricaPoverty has numerous dimensions that affect people’s well-being. The literature on the concept and measurement of poverty has significantly improved from the traditional unidimensional (income/expenditure) analysis to the multidimensional concept of poverty and well-being. This paper critically compared the monetary... -
Extending biodiversity conservation with functional and evolutionary diversity: a case study of South African sparid fishes
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: R Henriques --- , South Africa BQ Mann --- , South Africa ES Nielsen --- , South Africa C Hui --- , South Africa S von der Heyden --- , South AfricaDesigning marine protected area (MPA) networks has relied primarily on species- or habitat-based measures that assess spatial distributions of biodiversity. Molecular and functional data have the potential to unlock information regarding the evolutionary uniqueness and resilience of natural communities, making... -
Interesting new facts on Heterodera schachtii (Nematoda: Heteroderidae) from South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Antoinette Swart --- , South Africa Rinus Knoetze --- , South AfricaIn January 2017 Heterodera schachtii Schmidt, 1871 was collected from a potato field, formerly planted to cabbage, in the Tarlton area of South Africa. As H. schachtii from South Africa has never been studied molecularly, this short communication is the... -
R&D productivity for science, technology and innovation policy development in Nigeria: A scientometric analysis of academic literature
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Olufikayo Abodunde --- , Nigeria Oluseye Jegede --- , South AfricaThis study purposively selected 148 Science and Engineering Journals out of the 221 Journals registered on the African Journal Online (AJOL) directory. Data harvested were analyzed on a year-wise basis from 2012 to 2016, to identify the positive or negative... -
Strategies of coping with the effects of HIV/AIDS in Chinamhora communal lands, Goromonzi rural district, Zimbabwe
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Wilberforce Kurevakwesu --- , ZimbabweThis qualitative study assesses the impacts of HIV/AIDS on rural households in Chinamhora communal lands, explores the coping strategies of these rural households and establishes possible interventions towards improving their coping strategies. The study comes at a time when deaths... -
Prevalence of tungiasis in rural poor neighbourhood in Igbokoda, Ondo State, Nigeria
Item type: Journal Article • Journal: African Zoology • Authors: Okorie O Anyaele --- , Nigeria Victor N Enwemiwe --- , NigeriaThe sand flea, Tunga penetrans, causes tungiasis, the detrimental skin inflammation with the potential for bacterial co-infections. It is a neglected tropical disease common among the rural poor, especially communities along the coastlines in Southwest Nigeria. There are very few... -
Home range size of male dama gazelles, Nanger dama, in an ex situ population in West Texas
Item type: Journal Article • Journal: African Zoology • Authors: Elizabeth Cary Mungall --- , United States Susan M Cooper --- , United StatesDama gazelles (Nanger dama Pallas, 1766) are critically endangered within their native habitat of northern Africa’s Sahelo-Saharan Zone. However, several Texas ranches maintain populations that provide a hedge against extinction and that can provide suitable stock for conservation projects, including... -
A decade of surf-zone linefish monitoring in the Dwesa-Cwebe Marine Protected Area, with a preliminary assessment of the effects of rezoning and resource use
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: K Bullock --- , South Africa A Wood --- , South Africa VA Dames --- , South Africa JA Venter --- , South Africa J Greeff --- , South AfricaAn 11-year assessment of surf-zone linefish (marine fish captured on hook and line) was carried out in the Dwesa-Cwebe Marine Protected Area (MPA) in the Eastern Cape, South Africa, by research fishing to determine species and size composition, movement and... -
Evaluating the evidence for ecological effectiveness of South Africa’s marine protected areas
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: SP Kirkman --- , South Africa BQ Mann --- , South Africa KJ Sink --- , South Africa R Adams --- , South Africa T-C Livingstone --- , South Africa JB Mann-Lang --- , South Africa MC Pfaff --- , South Africa T Samaai --- , South Africa MG van der Bank --- , South Africa L Williams --- , South Africa GM Branch --- , South AfricaWe reviewed 140 papers to assess the ecological effectiveness of South Africa’s marine protected areas (MPAs). Evidence was assessed for coverage and representivity, protection of important biodiversity areas, other recognised elements of effectiveness, connectivity, and ecological effects—from the scale of... -
Magnitude, patterns and composition of wildlife roadkill in the Serengeti ecosystem, northern Tanzania
Item type: Journal Article • Journal: African Zoology • Authors: Richard D Lyamuya --- , Tanzania Kwaslema M Hariohay --- , Tanzania Emmanuel H Masenga --- , Tanzania John K Bukombe --- , Tanzania Grayson G Mwakalebe --- , Tanzania Maulid L Mdaki --- , Tanzania Ally K Nkwabi --- , Tanzania Robert D Fyumagwa --- , Tanzania Eivin Røskaft --- , NorwayGlobally, traffic associated with roads that pass through protected areas are the cause of many negative impacts on wildlife, such as wildlife roadkill, which has occurred within the Serengeti ecosystem. A 200 km stretch of gravel road networks that passes... -
Avian diversity in Moka, Bioko Island, Equatorial Guinea
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Christina D Perella --- , United States Jacob R Owens --- , United States Drew T Cronin --- , United StatesBioko Island, Equatorial Guinea is a biodiversity hotspot facing encroaching development, logging, and hunting. Long-term monitoring of the species composition and community structure of birds on Bioko allows for a better understanding of the effects of seasonality, anthropogenic development, and... -
Soil fertility trends and management in Conservation Agriculture: a South African perspective
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: GP Nortjé --- , South Africa MC Laker --- , South AfricaConservation Agriculture (CA) is an integrated approach that consists of a suite of practices, namely no-till farming, cover crops, and crop rotation that includes at least three crops. In the global context, CA is implemented widely in South America (Argentina... -
Effect of soil type on spatial distribution and nutritive value of grass species growing in selected rangelands of South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Khuliso E Ravhuhali --- , South Africa Victor Mlambo --- , South Africa Tefera S Beyene --- , South Africa Lobina G Palamuleni --- , South AfricaThe distribution and status of grass species is essential for sustainable management of rangelands. Therefore, this study assessed the spatial distribution and nutritive value of grass species as influenced by soil type in selected rangelands of the North West province... -
Distribution and community structure of at-risk and Data Deficient elasmobranchs in Zavora Bay, Mozambique
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: B O’Connor --- , The Netherlands N Cullain --- , United StatesPersistent threats from fishing pressure and increasing habitat degradation, as well as slow recovery rates resulting from K-selected life histories, are putting increasing numbers of elasmobranch species (sharks, rays and skates) at risk of extinction worldwide. Global declines in elasmobranch... -
The diet of the Olive Bee-eater, Merops superciliosus, in the Central Highlands of Madagascar
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Balsama Rajemison --- , Madagascar Hesham T Goodman --- , Madagascar Steven M Goodman --- , MadagascarRegurgitated pellets from the Olive Bee-eater, Merops superciliosus, were collected below a hunting perch in Antananarivo, Madagascar, and used to examine this species’ food habits. The diet of this species was largely composed of bees (Apidae, genus Apis) and the... -
Diet of a Maghreb Owl pair Strix mauritanica (Witherby, 1905) in an urban environment (Rabat City, Morocco)
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Sidi Imad Cherkaoui --- , Morocco Abdeslam Rihane --- , Morocco Brahim Chergui El Hemiani --- , MoroccoA pair of the Northwest African endemic Maghreb Owl Strix mauritanica (Witherby, 1905) located in a coastal urban environment of the Moroccan capital, Rabat, was monitored for the first time over two consecutive breeding seasons, in 2020 and 2021, respectively... -
Trends in mussel cover, density and size at exploited and unexploited intertidal reefs in eastern South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: E Steyn --- , South Africa JC Groeneveld --- , South Africa J Santos --- , Norway XI Mselegu --- , South AfricaThe brown mussel Perna perna is the dominant indigenous mussel along the east coast of South Africa, where it is harvested by recreational and subsistence fishers. High fishing pressure near urban areas led to declining abundance and consequently to the... -
Supporting marine spatial planning with an ecosystem model of Algoa Bay, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: K Ortega-Cisneros --- , South Africa E Weigum --- , South Africa R Chalmers --- , South Africa S Grusd --- , South Africa AT Lombard --- , South Africa L Shannon --- , South AfricaThe Ecopath with Ecosim (EwE) modelling framework was used to develop a model of Algoa Bay and test the ecosystem impacts of the implementation of the Addo Elephant National Park Marine Protected Area (MPA). The Ecopath model included 37 functional... -
Evidence for overfishing of tigerfish Hydrocynus vittatus (Castelnau 1861) in the Kavango River, Namibia
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: FJ Jacobs --- , Namibia TF Naesje --- , Norway EM Ulvan --- , Norway CJ Hay --- , Namibia FH Khaebeb --- , Namibia OLF Weyl --- , South AfricaThe fishery for the African tigerfish Hydrocynus vittatus in northern Namibia makes a substantial contribution to surrounding food security and stimulates the local economy through subsistence and recreational fishing. However, local fishers suggest that catch rates of H. vittatus have... -
Population trends of resident and migrant West African bird species monitored over an 18-year period in central Nigeria
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Joy Akpanta Ishong --- AP Leventis Ornithological Research Institute, Nigeria Joseph K Afrifa --- AP Leventis Ornithological Research Institute, Nigeria Soladoye B Iwajomo --- AP Leventis Ornithological Research Institute, Nigeria Justus P Deikumah --- AP Leventis Ornithological Research Institute, Nigeria Samuel T Ivande --- AP Leventis Ornithological Research Institute, Nigeria Will Cresswell --- AP Leventis Ornithological Research Institute, NigeriaAlmost no systematic monitoring of bird population trends occurs in West Africa, despite rapid human population increase, habitat change, and climate change, making conservation planning problematic. We monitored bird population trends using constant-effort mist netting, in a newly protected area... -
Aspects of the nonbreeding ecology of the Tree Pipit Anthus trivialis in and around Amurum Forest Reserve, Jos Plateau, Nigeria
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Taiwo A Adams --- University of Jos Biological Conservatory, Nigeria Samuel T Ivande --- University of Jos Biological Conservatory, Nigeria Mark Wilson --- , United KingdomTo advance our knowledge about the nonbreeding ecology of the Tree Pipit Anthus trivialis, this study investigated its population dynamics, habitat utilisation and foraging behaviour, from October to December 2018, in and around the Amurum Forest Reserve, located in the... -
The constraints of antiretroviral uptake in rural areas: the case of Thamaga and surrounding villages, Botswana
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Matlhogonolo Bene --- , , Botswana Michael B.K. Darkoh --- , , BotswanaThis article examines the constraints of antiretroviral (ARV) uptake in the villages of Thamaga, Kumakwane, Mankgodi and Gakgatla which are in the Kweneng District of Botswana. The social interactionist approach and theories of health behaviour provided the theoretical basis of... -
Analysis of intraspecific colour variation in the fossorial Coastal Legless Lizard, Microacontias litoralis (Scincidae: Acontiinae)
Item type: Journal Article • Journal: The Journal of the Herpetological Association of Africa • Authors: PhomoloL. Mashinini --- Transvaal Museum, South Africa Neil.J. L. Heideman --- University of the Free State, South Africa P. le FrasN. Mouton --- Stellenbosch University, South AfricaAn analysis of intraspecific variation in the fossorial skink Microacontias litoralis revealed that orange‐coloured and melanistic individuals co‐occur at several localities. Body colour was found to be independent of sex and body size. Both orange‐coloured and melanistic in situ embryos... -
Conservation assessment of the critically endangered frog Mantella aurantiaca in Madagascar
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Roma Randrianavelona --- Madagasikara Voakajy, Madagascar Harisoa Rakotonoely --- Université d' Antananarivo, Madagascar Jonah Ratsimbazafy --- Université d' Antananarivo, Madagascar RichardK. B. Jenkins --- Madagasikara Voakajy, MadagascarMantella aurantiaca is a small, bright orange, terrestrial amphibian that is endemic to the island of Madagascar. The species has attracted significant attention from herpetologists and captive breeders but relatively little effort has been given to its conservation in the... -
Customary ecological conservation of Mwanda-Marungu Pastoral Commons in Taita Hills, south-west Kenya
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Daniel Maghanjo Mwamidi --- Institute of Environmental Sciences and Technology (ICTA), Autonomous University of Barcelona, Spain Abdirizak Arale Nunow --- Moi University, Kenya Pablo Dominguez --- Institute of Environmental Sciences and Technology (ICTA), Autonomous University of Barcelona, SpainRural commons in East-Africa have historically played key socio-economic and environmental sustainability. Despite growing interest in this arena, there are still surprisingly few studies that examine rural customary management of pastoral communities in East Africa. This is striking given that... -
‘Flash Mobula’: first observations of courtship behaviour of the shortfin devil ray Mobula kuhlii
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: M Carpenter --- University of Cape Town, South Africa C Griffiths --- University of Cape Town, South AfricaFirst-time observations of courtship behaviour of the Endangered shortfin devil ray Mobula kuhlii are described from the Aliwal Shoal Marine Protected Area (MPA), KwaZulu-Natal, South Africa. Three events of M. kuhlii courtship, called ‘mating trains’, were recorded on video during... -
Effect of land use/land cover changes on water quality in the Upper Athi River sub-catchment in Kenya
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Margaret Waturu --- The Technical University of Kenya, Kenya Lewis Sitoki --- The Technical University of Kenya, Kenya Joseph Lalah --- The Technical University of Kenya, Kenya Stanley Chasia --- The Technical University of Kenya, Kenya Evance Mbao --- The Technical University of Kenya, KenyaThe unprecedented pollution of Athi River has negatively impacted the downstream communities who depend on the river's waters. Moreover, the Upper Athi River Catchment has recently experienced an increase in human population coupled with rapid industrialisation, which has led to... -
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 AfricaFine-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... -
Movement patterns of Natal seacatfish Galeichthys troworum (Ariidae) tagged in the Pondoland Marine Protected Area, Eastern Cape, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: BQ Mann --- Oceanographic Research Institute, South Africa K Cox --- , South Africa GL Jordaan --- Oceanographic Research Institute, South Africa R Daly --- Oceanographic Research Institute, South AfricaA tag-recapture study was undertaken on the Natal seacatfish Galeichthys troworum in the Pondoland Marine Protected Area (PMPA) on the east coast of South Africa. A total of 473 fish were tagged over a period of 8 years, and 136... -
The avifauna of Niokolo-Koba National Park, Senegal: a review of historical and recent ornithological records
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: John B Rose --- , France Oliver JL Fox --- , The Gambia Bram Piot --- , Laos Philippe Delaporte --- , FranceWe present the results of a review of the bird species historically observed in Niokolo-Koba National Park, a World Heritage Site and 913 000 ha natural protected area in southeastern Senegal. In carrying out this work we consulted both formal... -
Population status, distribution and seasonal range of Grevy’s zebra (Equus grevyi) in a protected savannah area
Item type: Journal Article • Journal: African Zoology • Authors: --- Samara University, Ethiopia --- Addis Ababa University, Ethiopia --- Addis Ababa University, EthiopiaThe genus Equus comprises six species and 22 subspecies. Ethiopia is the only country in the world that has all three surviving species of zebra. The population status, structure, and seasonal range of Grevy’s zebra (Equus grevyi) were studied in... -
Network analysis of the endemic spotted gully shark Triakis megalopterus reveals spatial vulnerability to exploitation in the Western Cape, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: E Cottrant --- , South Africa NJ Drobniewska --- , South Africa TL Johnson --- , South Africa LG Underhill --- University of Cape Town, South Africa TS Murray --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa N Hammerschlag --- University of Miami, United States PS Albano --- University of Miami, United States C Elston --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa ME McCord --- , South Africa PD Cowley --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa C Fallows --- , South Africa TG Paulet --- , South AfricaThe spotted gully shark Triakis megalopterus (Triakidae) is a mesopredatory species endemic to southern Africa. It is currently listed as Least Concern on the IUCN Red List in accordance with an estimated increase in population size, general release by recreational... -
Validation of the generic name Prescottiella gen. nov. (Desmidiales, Zygnematophyceae): a rare African desmid
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Sanet Janse van Vuuren --- North-West University, South Africa Anatoliy Levanets --- North-West University, South AfricaPrescottiella sudanensis is a rare, asymmetrical desmid currently known from only a few countries in equatorial Africa. During the present study, P. sudanensis cells were found in water samples from Vogel Pan located in the far north-eastern side of Namibia,... -
Distribution and site fidelity of four endemic catshark species in Walker Bay, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: TL Johnson --- , South Africa JC de Bresser --- , South Africa E Cottrant --- , South Africa NJ Drobniewska --- , South Africa TG Paulet --- , South Africa LG Underhill --- University of Cape Town, South AfricaCatsharks (family Scyliorhinidae) and the recently reclassified deepwater catsharks (family Pentanchidae) are two of the largest families of elasmobranchs and include species that function as important mesopredators in almost all marine ecosystems. This study focuses on four species endemic to... -
Winter storms: a potential threat to African oystercatchers Haematopus moquini
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: LG Underhill --- University of Cape Town, South AfricaSubstantial effort has gone into identifying threats to the African oystercatcher Haematopus moquini, a species of seabird native to the mainland coasts and offshore islands of southern Africa. Winter storms represent a possible further threat owing to the potential to... -
Population status of the range-restricted Red Lark Calendulauda burra in a conservation area stronghold
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Ryno Kemp --- DSI-NRF Centre of Excellence at the FitzPatrick Institute, South Africa Robin Colyn --- BirdLife South Africa, Science and Innovation Programme, South Africa Marc T Freeman --- DSI-NRF Centre of Excellence at the FitzPatrick Institute, South Africa Andrew E McKechnie --- DSI-NRF Centre of Excellence at the FitzPatrick Institute, South AfricaMany desert birds are vulnerable to anthropogenic global warming and landscape transformation, particularly in the case of range-restricted species. We quantified suitable habitat and the current population of Red Larks Calendulauda burra (family Alaudidae), a range-restricted southern African species, in... -
Performing multispecies studies in Southern Africa: historical legacies, marginalised subjects, reflexive positionalities
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Paula Alexiou --- University of Cologne, Germany Julia Brekl --- University of Cologne, Germany Emilie Köhler --- University of Cologne, Germany Wisse van Engelen --- University of Cologne, GermanyMultispecies studies are known for tackling human exceptionalism. Whilst the field has seen a remarkable increase in popularity amongst scholars in the humanities and social sciences, critiques argue that it neglects inequalities and consequential differences amongst humans and between humans... -
Areas of work–life and psychological reward satisfaction among new Chinese graduate nurses: The moderating role of psychological capital
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Huan Ma --- School of Nursing, Sichuan Vocational College of Health and Rehabilitation, China Jin-Mei Zou --- School of Nursing, Sichuan Vocational College of Health and Rehabilitation, China Ying Zhong --- Nursing Department, Zigong First People’s Hospital, China Dan Song --- School of Nursing, Sichuan Vocational College of Health and Rehabilitation, ChinaThis study aimed to explore the relationship between areas of work–life and psychological reward satisfaction, and the role of psychological capital in that relationship. Participants were from four Chinese major public hospitals (n = 532; female = 88.7%; mean age... -
Future of the IUCN Endangered white steenbras Lithognathus lithognathus (Sparidae) – a tale of two estuaries
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: AK Whitfield --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa MKS Smith --- Rhodes University, South AfricaThis review draws on a long history of ichthyological and fisheries research to examine the changing stock status of the estuary-dependent white steenbras Lithognathus lithognathus in the South African Swartkops and Knysna estuaries. The available evidence points to a major... -
Aspects of the illegal hunting and trade of vultures in northern KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Nomthandazo S Manqele --- University of KwaZulu-Natal, South Africa SA Jeanetta Selier --- South African National Biodiversity Institute (SANBI), South Africa Colleen T Downs --- University of KwaZulu-Natal, South AfricaThe harvesting and trade of species for use in traditional medicine, or muthi, is predominantly illegal, unregulated, and likely unsustainable, representing a major conservation challenge. In South Africa, vulture populations have declined considerably in recent decades, but evidence shows a... -
The effect of superphosphate on the productivity of mucuna (Mucuna pruriens) on a sandy loam soil in Zimbabwe
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M.D. Shoko --- Department of Agronomy, University of Stellenbosch, Private Bag X1, RSA P.J. Pieterse --- Department of Agronomy, University of Stellenbosch, Private Bag X1, RSA G.A. Agenbag --- Department of Agronomy, University of Stellenbosch, Private Bag X1, RSAPositive responses to increased soil phosphorus (P) supply have been noted for several leguminous species including mucuna (Mucuna pruriens). The major objective of this research was to investigate the effect of P level of 40 kg P ha-1 on the... -
Trends and population size of White-necked Rockfowl Picathartes gymnocephalus within the Nyamibe Bepo Forest Reserve in Ghana
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Joseph Kwasi Afrifa --- Ghana Wildlife Society, Accra Conservation Education Centre, Ghana Ernestina Ahema --- Ghana Wildlife Society, Accra Conservation Education Centre, Ghana Winston Kanyi --- Ghana Wildlife Society, Accra Conservation Education Centre, Ghana Gideon Nyamekye Osei --- Ghana Wildlife Society, Accra Conservation Education Centre, Ghana Darkwah Yaw Amoateng --- Ghana Wildlife Society, Accra Conservation Education Centre, Ghana Augustus Asamoah --- Proforest Africa Regional Office, GhanaThe White-necked Rockfowl Picathartes gymnocephalus (family Picathartidae) is endemic to the Upper Guinea forest and has a global population of <10 000 mature individuals. This species is listed as Vulnerable on the IUCN Red List owing to its declining population,... -
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 AfricaBackground: 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). -
Movement patterns of grey grunter Pomadasys furcatus (Pisces: Haemulidae) in the iSimangaliso Marine Protected Area, South Africa
Item type: Journal Article • Journal: African Zoology • Authors: Bruce Q Mann --- Oceanographic Research Institute, South African Association for Marine Biological Research, South Africa Stuart Dunlop --- Oceanographic Research Institute, South African Association for Marine Biological Research, South Africa Robert Kyle --- South African Association for Marine Biological Research, South Africa Gareth L Jordaan --- Oceanographic Research Institute, South African Association for Marine Biological Research, South Africa Ryan Daly --- Oceanographic Research Institute, South African Association for Marine Biological Research, South AfricaPomadasys furcatus is a relatively common inshore fish species caught in the shore-based linefishery in northern KwaZulu-Natal (KZN), South Africa, yet relatively little is known about the biology and ecology of this species. Movement patterns of this species were studied... -
Spatial and temporal distribution of shallow-water hake Merluccius capensis off the south coast of South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: LCJ Nomxego --- Fisheries and the Environment (DFFE), South Africa OS Kjesbu --- Institute of Marine Research, Norway WHH Sauer --- Rhodes University, South Africa MR Lipinski --- Rhodes University, South AfricaThis study investigated the spatial and temporal distribution of shallow-water hake Merluccius capensis off the south coast of South Africa, using 1 807 females collected by bottom trawling during industry and research surveys between 2014 and 2016. Mean body size... -
Establishing a basis for recognising marine ‘other effective area-based conservation measures’ (OECMs) in South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: SP Kirkman --- Fisheries and the Environment (DFFE), South Africa P Kowalski --- , South Africa SD Holness --- Institute for Coastal and Marine Research, Nelson Mandela University, South Africa LJ Atkinson --- , South Africa R Brand --- Western Cape Government, South Africa L Dunga --- Institute for Coastal and Marine Research, Nelson Mandela University, South Africa TP Fairweather --- Fisheries and the Environment (DFFE), South Africa T Goldman --- Rhodes University, South Africa D Marnewick --- Eastern and Southern Africa Regional Office, South Africa J Nhleko --- Fisheries and the Environment (DFFE), South Africa R Peter --- Fisheries and the Environment (DFFE), South Africa C Smith --- World Wide Fund for Nature – South Africa (WWF-SA), South Africa MG van der Bank --- South African National Biodiversity Institute (SANBI), Kirstenbosch Research Centre, South Africa G van der Heever --- Fisheries and the Environment (DFFE), South Africa L van Niekerk --- Institute for Coastal and Marine Research, Nelson Mandela University, South Africa KA Wright --- Wildlands Conservation Trust (WILDTRUST), South Africa KJ Sink --- Institute for Coastal and Marine Research, Nelson Mandela University, South AfricaThe concept of ‘other effective area-based conservation measures’ (OECMs) and its technical guidance provide opportunities for recognising a broader range of area-based management measures that contribute to biodiversity conservation outside of protected areas. However, progress towards the recognition of OECMs... -
Distribution and movement patterns of white musselcracker Sparodon durbanensis, a South African endemic seabream
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: BQ Mann --- Oceanographic Research Institute (ORI), South Africa GL Jordaan --- Oceanographic Research Institute (ORI), South Africa R Daly --- Oceanographic Research Institute (ORI), South Africa WN Dalton --- Oceanographic Research Institute (ORI), South Africa PA Watt-Pringle --- Oceanographic Research Institute (ORI), South Africa K Hewett --- Rhodes University, South Africa WM Potts --- Rhodes University, South AfricaThe white musselcracker Sparodon durbanensis (family Sparidae) is a highly prized shore angling and spearfishing species. This study investigated its movement behaviour along the southeastern seaboard of South Africa, using tag-recapture data. A total of 3 378 S. durbanensis were... -
Using DNA barcoding to identify the early life history stages of demersal coastal fishes in shallow nearshore and estuarine benthic habitats of Algoa Bay
Item type: Journal Article • Journal: African Zoology • Authors: P Nodo --- South African Institute for Aquatic Biodiversity, South Africa P Pattrick --- Nelson Mandela University, South Africa A-R Childs --- South African Institute for Aquatic Biodiversity, South Africa NC James --- South African Institute for Aquatic Biodiversity, South AfricaThe accurate identification of early life history stages of fishes, including larval and transformation stages to species level, is critical in spatial and temporal studies of coastal fish assemblages. This enables a better understanding of species-specific settlement patterns, nursery habitat...
