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The Application of Inorganic Fertilisers to Conditioned Pinus radiata Prior to Lifting as a Means of Improving Root Growth Capacity
Item type: Journal Article • Journal: South African Forestry Journal • Authors: D. G.M. Donald --- ,A modified root growth capacity technique was used to evaluate the effect of the application of different types and quantities of fertilisers on the root growth capacity (RGC) of conditioned Pinus radiata seedlings. The experiment indicates that 0,05 g N... -
A comparison of highveld fodders and fodder flows for growing out long yearling steers
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: J.O. Grunow --- Department of Plant Production, P.A. Pieterse --- Department of Plant Production, D.E. Borlinghaus --- ,A fodder flow/animal experiment 40,8 ha in extent (7,5 ha irrigated), with 19 paddocks, was carried out over a two and a half year period. -
Potential of medic and lucerne pastures in the rûens area of the Southern Cape
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: J.M. van Heerden --- Department of Agriculture and Water Supply (Winter Rainfall Region), N.M. Tainton --- Department of Grassland Science,The potential of dryland lucerne and medic pastures was compared over a range of stocking rates, i.e. three, four, five, six, seven and eight merino ewes per hectare, in the Rûens area of the Southern Cape. It was found that... -
Die ekonomiese implikasies van bosverdigting en bosbeheer soos van toepassing op ‘n speenkalfproduksiestelsel in die doringbosveld van die Molopo‐gebied
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: A. Moore --- , A. Odendaal --- ,Daar bestaan ‘n dringende behoefte aan ekonomies geregverdigde kostes wat as riglyne kan dien vir bosbeheer in die Molopo‐gebied. In hierdie referaat word so ‘n bedrag beraam. -
A consideration of veld condition assessment techniques for commercial livestock production in South Africa
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: N.M. Tainton --- Department of Grassland Science,A number of procedures have been developed for the evaluation of veld condition in a variety of vegetation types in South Africa. These include both agronomic and ecologically based methods, about which there still remain a great deal of controversy... -
Influence of grazing management on the production of an irrigated grass/legume pasture in the Rûens area of the Southern cape
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: J.M. vanHeerden --- Department of Agriculture and Water Supply (Winter Rainfall Region), N.M. Tainton --- Department of Grassland Science,The production of an irrigated grass/legume pasture was determined using Merino ewes on rotational and continuous grazing systems. The clover content of the pasture declined, while the grass content increased under both systems. The lucerne content of the rotationally‐grazed pastures... -
‘n oorsig oor staande hooi in die sentrale grasveld met spesiale verwysing na digit aria eriantha
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: C.S. Dannhauser --- Departement Landbou en Watervoorsiening,‘n Literatuuroorsig oor die gebruikswaarde van tropiese grassse as staande hooi, in die winter, word voorsien. Die invloed van klimaat op die keuse van spesies en bestuur van die grasse, gedurende die voorafgaande groeiseisoen, word bespreek. Meer onlangse gegewens oor... -
The effect of severe drought and management after drought on the mortality and recovery of 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), G.C. Stuart‐Hill --- Department of Agriculture (Eastern Cape Region),The False Thornveld of the Eastern Cape experienced a particularly intense drought during the 1982/83 growing season. Extensive grass mortality took place during the drought. After the drought, recovery was particularly sensitive to the post‐drought management treatment applied. Veld that... -
An evaluation of the economic viability of commercial pastoralism in the smaldeel area of the Eastern Cape
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: J.E. Danckwerts --- Department of Agriculture and Water Supply (Eastern Cape Region), J.B. Marais --- Department of Agriculture and Water Supply (Eastern Cape Region),Carrying capacity models and financial data from study group farmers were used to derive attainable net revenue per ha on veld in good, moderate and poor condition. From these data, minimum farm sizes required for a reasonable standard of living... -
The relationship between the nitrogen and nitrate content and nitrate toxicity potential of Lolium multiflorum
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: R.J. Eckard --- Department of Agriculture and Water Supply (Natal Region), Republic of South AfricaThe interrelationships between the nitrate‐N and nitrogen content and dry matter yield of Midmar ryegrass (Lolium multiflorum cv. Midmar) were investigated. Data were collected from N fertility trials, from two seasons (1985 and 1987) on four soil sites (Metz, Griffin,... -
Relations between soil factors and herbage yields of natural grassland on sandy soils in the south‐eastern Transvaal
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: D.L. Barnes --- Department of Agricultural Development (Transvaal Region), Republic of South Africa M. Swart --- Department of Agricultural Development (Transvaal Region), Republic of South Africa M.F. Smith --- , Republic of South Africa G.H. Wiltshire --- , Republic of South AfricaForty systematically‐placed observation points were established in a 1.5‐ha area of floristically unifoim veld in which productivity varied spatially. At each point grass yields were determined by harvesting quadrats at eight‐week intervals during the growing season, and the volumetric water... -
Towards optimum grazing management for sheep production on crownvetch (Coronilla varia L.)
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: D.L. Barnes --- Department of Agricultural Development (Transvaal Region), Republic of South Africa C.P. Dempsey --- Department of Agricultural Development (Transvaal Region), Republic of South AfricaThe performance of wether lambs on crownvetch (Coronilla varia L.) pasture was determined for three seasons under five grazing procedures. These included continuous grazing and rotational grazing with a 7‐day period‐of stay and periods‐of‐absence of 7, 21, 35 or 49... -
Evaluation of shrub species for sheep grazing in the Strandveld of the Cape West Coast of South Africa
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: S.A. Barnard --- Department of Agricultural Development, Republic of South Africa J.M. van Heerden --- Department of Agricultural Development, Republic of South Africa H.S. Gerber --- Department of Agricultural Development, Republic of South AfricaThe production of three exotic shrub species, Atriplex nummularia (old man saltbush), A. canescens (four‐winged salt‐bush) and Medicago arborea (tree lucerne) and one indigenous evergreen shrub, Chrysanthemoides monilifera subsp. pisifera (west coast bitou), was evaluated in the Strandveld of the... -
A critical analysis of veld management recommendations for sourveld in the south‐eastern Transvaal
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: D.L. Barnes --- Department of Agricultural Development (Transvaal Region), Republic of South AfricaSurveys have shown that the grazing value of veld in the south‐eastern Transvaal is well below the estimated potential. Extension efforts aimed at rectifying the situation have been unsuccessful in that most recommendations have not been acceptable to producers. An... -
Relationship between cation exchange capacity, clay content and water retention of Highveld soils
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: AstridM. Lambooy --- ,Water in the soil is held by capillary and adsorption forces. These forces are mainly a function of clay content and mineralogy. To neglect the influence of clay mineralogy when estimating the water-holding properties of soil, implies that only a... -
Soil factors affecting tree growth and root development in a citrus orchard
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: D.J. Nel --- , A. T.P. Bennie --- ,Tree- and root-growth parameters correlated well with a number of soil properties Useful relationships were established between unconfined penetrometer resistance, air capacity (at FWC), tree growth and root development. -
Factors affecting the activity of atrazine in plants and soil
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: P.C. Nel --- Department of Plant Production, C.F. Reinhardt --- Department of Plant Production,Available research findings concerning (he activity of atrazine in the plant and soil are presented in a brief review. The role of the environment is emphasized. This review is supplemented by recent research results of the University of Pretoria concerning... -
Invloed van sekere grondeienskappe op matrikspotensiaal by, en tydsverloop tot, veldkapasiteit
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: D.J. Beukes --- Hoëveldstreek, Departement van Landbou,Veldkapasiteit (VK) is bepaal op 5x5 m-persele op verskeie gronde in Wes-Kaapland. Tekstureel het die gronde gewissel van growwe sand tot sandklei. Gronde van die Avalon-, Dundee-, Fernwood-, Hutton-, Oakleafen Westleighvorme is gebruik. Matrikspotensiaal (ψm) is gemonitor met kwiktensiometers, terwyl... -
Effect of herbicides on survival of rhizobia and nodulation of peas, groundnuts and lucerne
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: H. Jansen van Rensburg --- , B.W. Strijdom --- ,Thirteen herbicides were tested for toxicity against strains of Rhizobium used in South African legume inoculants for lucerne, clover, soybeans, groundnuts and lupins, respectively. Each of alachlor, bromoxynil, proprop, metolachlor, naptalam + dinoseb, and trifluralin inhibited at least two of... -
Aluminium uptake sites in the primary root of Zea mays L.
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: R.J. Bennet --- Department of Agriculture, C.M. Breen --- Department of Botany, M.V. Fey --- Department of Soil Science and Agrometeorology,Histochemical studies of the chronological sequence involved in the uptake of Al by the primary root of Zea mays L., cv. TX 24, showed the primary sites of Al uptake to be the peripheral cells of the root cap and... -
The primary site of aluminium injury in the root of Zea mays L.
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: R.J. Bennet --- Department of Agriculture, C.M. Breen --- Department of Botany, M.V. Fey --- Department of Soil Science and Agrometeorology,Histoohemioal and ultrastructural studies of aluminium-induced changes in root metabolism and the structure of the cytoplasmic organelles of the root cap indicated that the first observable effect of aluminium involved the migration of secretory vesicles of the Golgi apparatus which... -
Die invloed van swartpunt by gars (Hordeum distichon) op ontkieming en α-amilase-aktiwiteit
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: P. C.J. Maree --- Departement Akkerbou en Weiding, A. L.P. Caims --- Departement Akkerbou en Weiding,Gesonde garssaad en swartpuntgarssaad vanaf verskillende lokaliteite is vergelyk. Die ontkiemingsenergie van gesonde saad was na een maand beduidend beter as die van swartpuntsaad. Na 'n opbergingperiode van twee tot drie maande het geen verskille in ontkiemingsenergie en -kapasiteit meer... -
The influence of lime and phosphorus on the growth of white clover on highly weathered Natal soils
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: N. Miles --- , P.E. Bartholomew --- , C.I. Macdonald --- ,Results of field studies conducted on highly weathered Natal soils in which the performance of white clover (Trifolium repens cv. Regal ladino) was examined under a range of lime and P treatments applied in factorial combination, are presented. Despite adverse... -
Evaluering van plantdoders vir langtermynbeheer van onkruid in aanplantings van knoffel (Allium sativum L.)
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: P.F. Nortjé --- , P.J. Henrico --- ,Van die ses plantdoders wat geëvalueer is, het slegs oksifluorfen bevredigende siesoenlange beheer van onkruide in aanplantings van knoffel (Allium sativum L.) verskaf. Oksadiason, chloroksuron, nitrofen, metabenstiasuron, ioksinil en oksifluorfen het min of geen fitotoksiese simptome op knoffel teen aanbevole... -
Tolerance of South African maize (Zea mays L.) cultivars to atrazine
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M.R. Le Court De Billot --- Summer Grain Centre, P.C. Nel --- Department of Plant Production,Sixty-seven maize cultivars were evaluated for tolerance to atrazine (4 p.p.m. v/v) in nutrient solution. Shoot dry masses (SDM) of only two cultivars, SAB149 and NPP x K64r, were reduced more than 40% and another 14 were reduced by more... -
Die invloed van fosfor, nitraat en ammonium op die opname en vervoer van stikstof en fosfor en op die groei van koring
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A.S. Claassens --- Departement Grondkunde en Plantvoeding, W.J. Fölscher --- Departement Grondkunde en Plantvoeding,In 'n waterkultuureksperiment met koring is die invloed van verskillende P-toedienings (0,02 tot 5,0 me H2PO4 dm−3) en van verskillende NH4:NO3-verhoudings (0:15 tot 12:3) met 'n Hoagland-voedingsoplossing (no. 2) as kontrole bestudeer. Normale groei is reeds by 'n laer P-voorsiening... -
Recovery of grain sorghum [Sorghum bicolor (L.) Moench] from atrazine and cyanazine phytotoxicity
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M.R. le Court de Billot --- , P.C. Nel --- Department of Plant Production,Recovery of growth following atrazine and cyanazine toxicity and the effect on subsequent grain yield of sorghum were studied in nutrient solutions in two separate experiments. In Experiment I, concentrations of atrazine and cyanazine were decreased at weekly intervals based... -
Empinese verwantskappe tussen veldkapasiteit en sekere fisiese grondeienskappe
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: D.J. Beukes --- Hoëveldstreek, Departement van Landbou en Watervoorsiening,Veldkapasiteit (VK) is in situ bepaal op verskeie gronde in Wes- Kaapland. Grondtekstuur het gewissel van sand tot sandklei. Veldkapasiteit is op vyf dieptes bepaal en het gevarieer van 4,9% tot 27,2% op massabasis. Matrikspotensiaal by VK het gewissel van... -
Behaviour of sesquioxic clay soils subjected to alkaline and saline effluents
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.G. Thompson --- ,The effects of disposal of alkaline and saline effluents on sesquioxic red clay soils have been monitored for many years on a site in the eastern Transvaal. Recently a high chloride content effluent with a sodium adsorption ratio (SAR) of... -
Aluminium toxicity and induced nutrient disorders involving the uptake and transport of P, K, Ca and Mg in Zea mays L.
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: R.J. Bennet --- Department of Agriculture, C.M. Breen --- Department of Botany, M.V. Fey --- Department of Soil Science and Agrometeorology,Chemical analysis of plant fractions of maize cultivars TX 24 and HL 1 grown in liquid culture containing Al showed that the action of Al was directed at the uptake of Ca and Mg and the transport of P and... -
Evaluation of the effects of scorching caused by the directed application of a paraquat-containing herbicide mixture to the base of maize plants at various ages
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: P. E.L. Thomas --- ,The effect of herbicides which scorched the lower leaves of maize was compared in three seasons. The first season was relatively dry whilst the other two were wetter seasons. A mixture of cyanazine + atrazine + paraquat + a wetting... -
A proposed mechanism for the volatilization of ammonia from fertilized neutral to alkaline soils
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: C.C. du Preez --- Department of Soil Science, R. du T. Burger --- Department of Soil Science,Ammonia volatilization from five soils, ranging in clay content from 7,6 to 49,9%, were determined after pH values of the soils were adjusted to 8,0. Ammonium sulphate, limestone ammonium nitrate, urea, monoammonium phosphate and diammonium phosphate were applied on the... -
The persistence in soil and phytotoxicity on dry beans of alachlor and metolachlor as affected by climatic factors
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: E. van Rensburg --- , L.P. van Dyk --- ,The persistence of alachlor (2-chloro-2′, 6′-diethyl-N-methoxymethylacetanilide) and metolachlor [2-chloro-6′-ethyl-N-(2-methoxy-1-methylethyl)acet-O-toluidide] in soil was determined over an 80-day period at temperatures ranging from 5 to 50°C. Soils were maintained at either 50 or 100% of field capacity. The herbicides were less persistent... -
Kleimineralogie, katioonuitruilkapasiteit en waterhouvermoë van grondvorms in die Hoëveldstreek
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: AstridM. Hattingh --- Hoëveldstreek, Departement van Landbou en Watervoorsiening,Kleimineralogiese data vir 12 grondvorms, wat algemeen in die Hoëveldstreek voorkom, is ondersoek. Die persentasie monsters waarin 'n bepaalde kleimineraal voorkom, is bereken. Daaruit is dit duidelik dat smektiet algemeen in gronde van die Arcadia-, Bonheim, en Rensburgvorms voorkom, maar... -
Rol van tekorte aan sekere makro-elemente by verdraagsaamheid van mielies (Zea mays L.) teenoor atrasien
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: C.F. Reinhardt --- Departement Plantproduksie, P.C. Nel --- Departement Plantproduksie, N. M.J. Vermeulen --- Departement Biochemie, Z. Apostolides --- Departement Biochemie, D. J.J. Potgieter --- Departement Biochemie,Die verdraagsaamheid van mieliesaailinge (Zea mays L. kv SSM2041) teenoor atrasien is in 'n glashuis ondersoek. Plante is in potte gekweek, in voedingsoplossings met tekorte aan sekere makro-elemente. Atrasien in die voedingsoplossings is periodiek bepaal met behulp van hoëdrukvloeistofchromatografie. Tekorte... -
Sodicity phenomena in red sesquioxic clay subsoils
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.G. Thompson --- ,Monitoring for many years of the soils of an effluent disposal site in the eastern Transvaal has shown that the disposal of alkaline and saline effluents on red sesquioxic clays has not appreciably affected soil permeability but has brought about... -
Alachlor-geïhduseerde veranderinge in sekere membrane van Sorghum bicolor (L.) Moench-plante
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: C.F. Reinhardt --- Departement Plantproduksie, Republiek van Suid-Afrika P.C. Nel --- Departement Plantproduksie, Republiek van Suid-AfrikaSekere ultrastrukturele veranderinge veroorsaak deur alachlor (α-chloor-2′, 6′-diëtiel-N-metoksimetielasetanilied) in graansorghumplante is ondersoek. Elektronmikro- skoopmikrograwe het aangetoon dat disintegrering van vakuoolmembrane, kernmembrane en omhullingsmembrane van chloroplaste voorgekom het by alachlorbehandelde plante. -
Atrazine metabolism in field-grown maize and the effect of atrazine phototoxicity on yield
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: C. Malan --- , Republic of South Africa J.H. Visser --- Department of Botany, Republic of South Africa H.A. van de Venter --- Department of Botany, Republic of South AfricaMaize was grown under field conditions, applying conventional farming practices. Atrazine was sprayed pre- emergence at concentrations of 1,25 I ha−1ai. and 5 I ha−1ai. Severe phytotoxicity symptoms were visible from the first- to about the sixth-leaf stage i.e. 25–30... -
Evaluation of five Pecan cultivars [Carya illinoensis (Wang.) R. Koch] for yield, precocity, alternate bearing, leaf:nut ratio and length of growing season in the Transvaal middleveld
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: T.K. Haulik --- , Republic of South Africa L.C. Holtzhausen --- Department of Horticultural Science, Republic of South AfricaThe average yield of five pecan cultivars over a 22-year period was 25, 1 kg per tree per annum. The extrapolated average yield for the last 10 years of bearing was 2 642 kg ha-1, which compares favourably with results... -
Variations in floristic and palatability composition, yield of veld and of soil characteristics on a paddock scale
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: D.L. Barnes --- Department of Agriculture and Water Supply (Transvaal Region), Republic of South Africa G.D. Kotzé --- Department of Agriculture and Water Supply (Transvaal Region), Republic of South Africa B.H. Beukes --- Department of Agriculture and Water Supply (Transvaal Region), Republic of South Africa C. Kohlmeyer --- Department of Agriculture and Water Supply (Transvaal Region), Republic of South AfricaFive parallel 900-m line-transects were laid out 100 m apart in relatively homogeneous veld. Floristic composition, yields of dry matter, soil forms and series, effective depth, clay content of the top and subsoil, and the pH of the topsoil were... -
Risk analysis of wheat production in the central Orange Free State using a growth model
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 wheat crop growth model (Singels, 1983) was refined and used to calculate annual grain yield from weather data for 45 seasons in the Bloemfontein area. Five different levels of profile-available water capacity were used as soil input parameter. Other... -
Phytotoxicity of pre-emergence herbicides to peach seedlings (Prunus persica)
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A.F. Lourens --- , Republic of South Africa A.H. Lange --- Extension Weed Scientist, United States of America F.J. Calitz --- , Republic of South AfricaPre-emergence herbicides were tested for relative phytotoxicity to Nemaguard peach seedlings (Prunus persica) in a sand culture. Typical symptoms, phytotoxicity ratings, growth and regrowth parameters were recorded. Diuron, the mixture diuron plus terbacil (1:1), terbutryne and norflurazon were rated phytotoxic... -
Growth and nutrient content of soybeans in relation to solution calcium and aluminium
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A.D. Noble --- Department of Crop Science, Republic of South Africa M.E. Sumner --- Department of Agronomy, United States of AmericaAluminium (Al) is a major component of most soils and is a limiting factor to sustained crop production in many regions. The amelioration of Al toxicity is of theoretical as well as practical interest in our understanding of mechanisms of... -
Importance of selected soil properties on the bioactivity of alachlor and metolachlor
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: C.F. Reinhardt --- Department of Plant Production, Republic of South Africa P.C. Nel --- Department of Plant Production, Republic of South AfricaBioassays with grain sorghum (Sorghum bicolor L. Moench) cultivar NK222 were conducted in a glasshouse. Thirty-four natural soils were used in each of two experiments with alachlor [2-chloro-2′,6′-diethyl-N- (methoxymethyl) acetanilide] and metolachlor [2-chloro-6′-ethyl-N-(2-methoxy-1-methylethyl)acet-otoluidide] respectively. Linear regression analyses were performed to... -
Comparison of methods for estimating cation exchange capacity of orchard soils
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Marie Conradie --- , Republic of South Africa W. A.G. Kotze --- , Republic of South AfricaVarious methods for estimating soil cation exchange capacity (CEC) were compared. CEC obtained by the sum of extractable cations and the Adams-Evans buffer method were considerably higher than those obtained by saturation and displacement of either NH4 + or Na+... -
The effect of lime, KCl and parent material on the cation exchange capacity of some acid subsoils of the western Cape
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J. Wooldridge --- , Republic of South AfricaCation exchange capacity (CEC) values obtained by 22Na dilution for a number of mineralogically diverse acid subsoils reflected positive responses to lime and to treatment with KCl such that: CEC (unlimed, no KCl) < (unlimed + KCl) < (limed, no... -
Aluminium and pH effects on dry bean root growth in nutrient solution
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A.D. Noble --- Department of Agronomy, Republic of South Africa T. Harding --- Department of Agronomy, Republic of South AfricaDespite considerable interest in the phytotoxic nature of soluble aluminium (Al), the relationships between Al species and observed phytotoxicity are not fully understood. A solution culture technique was employed to study the effects of Al species, at varying pH levels,... -
Phytotoxic response to foliar applications of molybdenum in tomato (Lycopersicon esculentum Mill.)
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: R.J. Bennet --- Department of Agriculture and Water Supply, Republic of South AfricaFoliar applications of sodium molybdate solutions adversely affected the growth of tomato plants so that reductions in plant height and dry matter yield were associated with most treatments applied. Fifty per cent of the plants which were subjected to treatments... -
Importance of selected soil properties on the bioactivity of acetochlor and metazachlor
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: C.F. Reinhardt --- Department of Plant Production, Republic of South Africa P.C. Nel --- Department of Plant Production, Republic of South AfricaThe bioactivity of acetochlor (2-chloro-N-(ethoxymethyl)-6′-ethyl-o-acetotoluidide) and metazachlor (2- chloro-N-(1-pyrazolylmethyl)-aceto-2′,6′-xylidide) was evaluated in thirty-two soils under controlled conditions. Grain sorghum (Sorghum bicolor L. Moench) cultivar NK222 was used as the indicator plant in the bioassays. Bioactivity was correlated with organic matter... -
Die verwantskap tussen maksimum nitrifikasietempo en relevante eienskappe van gronde vanaf die sentrale besproeiingsgebiede in Suid-Afrika
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: D.J. Laubscher --- Departement van Grondkunde, Republiek van Suid-Afrika C.C. du Preez --- Departement van Grondkunde, Republiek van Suid-AfrikaDie oogmerk van die studie was om die verwantskappe tussen maksimum nitrifikasietempo (Kmaks) en relevante eienskappe van die gronde vanaf die sentrale besproeiingsgebiede uit te wys. Die verloop van nitrifikasie is in agt gronde, afkomstig van die gebiede, gemonitor na... -
Urease-aktiwiteite in gronde van die sentrale besproeiingsgebiede in Suid-Afrika
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: F. P.J. Thormählen --- Departement van Grondkunde, Republiek van Suid-Afrika C.C. du Preez --- Departement van Grondkunde, Republiek van Suid-AfrikaDie oogmerk met die studie was om die omvang van urease-aktiwiteite in die besproeide gronde vas te stel en watter grondparameters dit beïnvloed. Die verloop van hidrolise is in agt gronde, afkomstig van die sentrale besproeiingsgebiede, gemonitor na toediening van... -
Effek van ureumkonsentrasies op die urease-aktiwiteite in gronde van die sentrale besproeiingsgebiede in Suid-Afrika
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: F. P.J. Thormählen --- Departement van Grondkunde, Republiek van Suid-Afrika C.C. du Preez --- Departement van Grondkunde, Republiek van Suid-AfrikaDie oogmerk met die studie was om vas te stel by watter ureumkonsentrasies die urease In die besproeide gronde versadlg of geinhibeer word. Die verloop van hldrolise is In ses gronde met verskillende urease-aktiwi- teite gemonitor na toediening van ureum... -
The influence of phosphorus on the tolerance of maize (Zea mays L.) to atrazine
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: C.F. Reinhardt --- Department of Plant Production, Republic of South Africa P.C. Nel --- Department of Plant Production, Republic of South AfricaGlasshouse and field studies were conducted to examine the effect of high phosphorus (P) application on the tolerance of the maize cultivar SSM2041 to atrazine [2-chloro-4-(ethylamino)-6-(isopropylamino)-s-tria- zine]. Two glasshouse experiments were conducted. In one, seedlings were exposed to five P... -
Evaluering van die effek van industriële uitvloeisels op grondbiodegradasie en ontkieming met behulp van mikrobiologiese aktiwiteitsbepalings en ontkiemingstudies
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: P. J.G. van der Merwe --- , Republiek van Suid-Afrika E. Nel --- , Republiek van Suid-Afrika H. J.C. Smith --- , Republiek van Suid-Afrika A. van Wyk --- , Republiek van Suid-AfrikaDie bydrae van grondmikro-organismes tot biologiese aktiwiteite in die grand is baie belangrik, veral met betrekking tot hul metaboliese aktiwiteite, asook hul rol in energievloei en voedingsiklusse van, bv. C, N, P, S, Fe, Mn, en Si. 'n Versteuring van... -
Cabbage seed germination for the assessment of adjuvant effects on 2, 4-D iso-octyl ester volatility
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: C.L. Schubert --- , Republic of South Africa D.J. Erasmus --- , Republic of South Africa L.P. van Dyk --- , Republic of South Africa V. Gray --- Department of Botany, Republic of South AfricaThe germination rate of cabbage seeds (Brassica oleracea cv. Hercules) exposed to the vapour of the 2,4-dichlorophenoxy iso-octyl ester (2,4-D IOE) was used in a bioassay to determine the effectiveness of commercial adjuvants in reducing the volatility of this hormonal... -
High availability of alachlor affects the roots and general growth of sunflower seedlings
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J. Allemann --- Department of Plant Production and Soil Science, Republic of South Africa C.F. Reinhardt --- Department of Plant Production and Soil Science, Republic of South AfricaThe tolerance to alachlor [α-chloro-2′,6′?diethyl-N-(metoxy- methyl) acetanilide] of three sunflower (Helianthus annuus L.) cultivars was evaluated in an aqueous medium in a glass- house. Alachlor (0.79 - 6.32 mg L−1) caused significant reductions in the root and shoot growth of... -
The effect of chloride on four different citrus rootstocks
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: N. J.J. Combrink --- , Republic of South Africa N. Labuschagne --- Department of Microbiology and Plant Pathology, Republic of South Africa R.O. Barnard --- Department of Soil Science and Plant Nutrition, Republic of South Africa J.M. Kotzé --- Department of Microbiology and Plant Pathology, Republic of South AfricaSeedlings of Troyer citrange [Poncirus Mollata L. Raf. × Citrus sinensis L. Osbeck] (Tro), Citrus volkameriana (Vol), Carrizo citrange [Poncirus trifoliata L. Raf. × Citrus sinensis L. Osbeck], (Car) and Rough lemon [Citrus jambhiri Lush.] (Rie) were tested for tolerance... -
Water-holding capacity of rock fragments in rehabilitated opencast mine soils
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.L. Schoeman --- , South Africa M.M. Kruger --- , South Africa A.H. Loock --- , South AfricaThe water-holding capacity of rock fragments sampled from spoil materials underlying rehabilitated opencast coal mine soils was determined. Four rock types, ranging from grit and coarse sandstone to carbonaceous shale, and four fractions of different size were investigated by means... -
An investigation into the problems associated with revegetating chrysotile tailings
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: L. van Rensburg --- , Republic of South Africa L. Pistoruis --- , Republic of South AfricaThe present investigation was initiated because of the limited success achieved in the past at attempts to revegetate chrysotile tailings with their associated inherent environmental risk factors. The current set of experiments and surveys, as with several previous studies, were... -
Effect of BP1, BP3 and Quince A rootstocks, at three planting densities, on precocity and fruit quality of ‘Forelle’ pear (Pyrus communis L.)
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: P. du Plooy --- , Republic of South Africa P. van Huyssteen --- , Republic of South Africa‘Forelle’ pear trees (Pyrus communis L.) were established at the Bien Donné experimental farm in the Western Cape Province of South Africa on BP1, BP3 and Quince A rootstocks at three planting densities, i.e., 889, 1667 and 2857 trees. ha... -
The effect of soil compaction on the water retention characteristics of soils in forest plantations
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: CW Smith --- , MA Johnston --- , SA Lorentz --- ,A study was carried out to evaluate the relative effects of soil compaction on the water retention characteristics of a range of soils in forest plantations in the summer rainfall regions of South Africa. In all cases compaction resulted in... -
Phytotoxicity of seven graminicides on maize
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A. E.J. Saayman-du Toit --- , South AfricaPhytotoxicity of single and double dosages of metolachlor, dimethenamid, acetochlor A and B, alachlor, flufenacet and a mixture of atrazine-sulcotrione, were evaluated on maize (Zea mays L.) in a greenhouse, using soil with a clay content of less than 10%... -
Phytotoxicity resulting from a combination of a pre-emergence herbicide and a pesticide seed dressing in maize (Zea mays L.)
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A. E. J. Saayman-du Toit --- , South AfricaThis study was prompted by reports from maize producers, indicating phytotoxicity to occur when using pre-emergence herbicides in combination with seed dressings under cold conditions on sandy soils. A greenhouse experiment was conducted in which the insecticide imidacloprid and the... -
The effect of rootstock cultivar on the yield and fruit quality of ‘Packham's Triumph’, ‘Doyenne du Comice’, ‘Forelle’, ‘Flamingo’ and ‘Rosemarie’ pears
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.N. Jacobs --- Department of Horticultural Science, South Africa N.C. Cook --- Department of Horticultural Science, South AfricaProduction data and questionnaire results concerning the long-term effects of various rootstocks on pear (Pyrus communis L.) yield indicated that BP1 and BP3 are currently the preferred rootstocks in the South African industry. Yield records of ‘Packham's Triumph’ pears indicated... -
Ceramic suction samplers: A reliable method for extracting soil solutions for analysis
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: L. Grobler --- Department of Plant Production and Soil Science, South Africa A.S. Claassens --- Department of Plant Production and Soil Science, South Africa J.G. Annandale --- Department of Plant Production and Soil Science, South AfricaCeramic samplers are used to extract soil solutions at different depths from the soil profile for chemical analysis. The advantage of this method is that samples can be taken at any time provided that the soil water potential is high... -
Retention of applied phosphorus by the benchmark soils of Lesotho and quantification of their phosphorus retention indices
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: S.F. Molete --- Department of Soil, Crop and Climate Sciences, South Africa C.C. du Preez --- Department of Soil, Crop and Climate Sciences, South Africa M.V. Marake --- Faculty of Agriculture, LesothoThis study was conducted with the objective of determining and quantifying the capacity of Lesotho's benchmark soils to retain applied P. The soils were incubated with a range of P levels for a period of 42 days, whereafter P retention... -
Phytotoxicity resulting from pre-emergence graminicides in sorghum
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A. E. J. Saayman-du Toit --- , South AfricaThis study was prompted by sorghum (Sorghum bicolor (L.) Moench) producers reporting phytotoxicity when using graminicides under unfavourable environmental conditions. A greenhouse experiment was conducted in which five graminicides were evaluated at two temperature regimes, using 10 cultivars. Registered dosage... -
Relations between phosphorus retention parameters and some other properties of benchmark soils in Lesotho
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: S.F. Molete --- Department of Soil, Crop and Climate Sciences, South Africa C.C. du Preez --- Department of Soil, Crop and Climate Sciences, South Africa M.V. Marake --- , LesothoThe benchmark soils of Lesotho are characterized by high P retention and this aspect should be accommodated in fertilization programmes. This together with long procedures for determination of P retention parameters and a lack of information on the relations between... -
The effects of a water treatment residue on grain yield and nutrient content in seeds of common dry beans (Phaseolus vulgaris L. cv. Ghadra) grown in a dystrophic soil
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: L.W. Titshall --- , South Africa J.C. Hughes --- , South AfricaThis glasshouse study investigated the grain yield and nutrient content of seed of common dry beans (Phaseolus vulgaris L. cv. Ghadra) grown in a dystrophic sandy soil treated with 0, 50, 100, 200 and 400 g kg−1 water treatment residue... -
Relationships between soil buffer capacity and selected soil properties in a resource-poor farming area in the Mpumalanga Province of South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: H.G. Jansen van Rensburg --- Department of Plant Production and Soil Science, South Africa A.S. Claassens --- Department of Plant Production and Soil Science, South Africa D.J. Beukes --- , South AfricaIn this study, the soil buffer capacity (soil BC) was measured for 80 topsoil samples of the most dominant soil forms in a small-scale farming area. Soils used in the study ranged from weakly to strongly buffered, with soil BC... -
Assessing the potential soil acidification risk under dryland agriculture in the Mlondozi district in the Mpumalanga Province of South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: H.G. Jansen van Rensburg --- Department of Plant Production and Soil Science, South Africa A.S. Claassens --- Department of Plant Production and Soil Science, South Africa D.J. Beukes --- , South Africa H.L. Weepener --- , South Africa P.J. Beukes --- , South AfricaThe farming community in the Mlondozi district in the Mpumalanga Province of South Africa has been part of a government liming intervention with the objective to ameliorate the serious soil acidity problem in the district. The current study was undertaken... -
Screening of some South African maize (Zea mays L.) cultivars for acetochlor tolerance
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J. Allemann --- Department of Soil, South Africa P.M. Mphundi --- Department of Soil, South AfricaAcetochlor containing a safener is registered for pre-emergence use on maize to control mainly annual grasses. It is applied at rates of between 0.49 and 1.89 kg ai ha-~ on soils with a clay content from <10% to 55%. Some... -
Selected soil properties as indicators of soil water regime in the Cathedral Peak VI catchment of KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: BT Kuenene --- Department of Soil, Crop and Climate Sciences, South Africa CW van Huyssteen --- Department of Soil, Crop and Climate Sciences, South Africa PAL Le Roux --- Department of Soil, Crop and Climate Sciences, South AfricaThe morphological features and physicochemical properties of 14 soil profiles, representing the major soil types, were studied in the Cathedral Peak VI catchment of KwaZulu-Natal, South Africa. The soils are characterised by a high organic carbon content in the topsoil,... -
Host-specificity testing of Puccinia xanthii var. parthenii-hysterophorae, a potential biocontrol agent for Parthenium hysterophorus in South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Estianne Retief --- , South Africa Khayalethu Ntushelo --- , South Africa AlanR Wood --- , South AfricaFollowing its introduction into Australia, the rust fungus Puccinia xanthii var. parthenii-hysterophorae has played an important role in the integrated approach to manage Parthenium hysterophorus. The rust was imported from Australia and established within quarantine facilities in South Africa. Supplementary... -
Phytochemical content, antioxidant capacity and physicochemical properties of pomegranate grown in different microclimates in South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Asanda Mditshwa --- Postharvest Technology Research Laboratory, South African Research Chair in Postharvest Technology, Faculty of AgriSciences, South Africa OlaniyiA Fawole --- Postharvest Technology Research Laboratory, South African Research Chair in Postharvest Technology, Faculty of AgriSciences, South Africa Fahad Al-Said --- Department of Crop Sciences, College of Agricultural and Marine Sciences, Sultanate of Oman Rashid Al-Yahyai --- Department of Crop Sciences, College of Agricultural and Marine Sciences, Sultanate of Oman UmezuruikeL Opara --- Postharvest Technology Research Laboratory, South African Research Chair in Postharvest Technology, Faculty of AgriSciences, South AfricaWe investigated the antioxidant and physicochemical properties of pomegranate (Punica granatum cv. Bhagwa) fruit grown in three microclimates in South Africa. The physicochemical properties of fruit peel and arils differed among the growing locations, including weight and redness color of... -
How does anybody live in this strange place? A reply to Samantha Vice
Item type: Journal Article • Journal: South African Journal of Philosophy • Authors: David Benatar --- Philosophy Department, South Africa c/oSamantha Vice has argued that ‘white’ South Africans are so tainted by the history of racial oppression in their country that they are incapable of attaining a great degree of moral virtue. She recommends that they should live in humility... -
RATE OF EROSION IN THE CATCHMENT OF THE BULBERGFONTEIN DAM NEAR REDDERSBURG IN THE ORANGE FREE STATE
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: J.S. Ie Roux --- Department of Geography, South Africa Z.N. Roos --- Department of Geography, South AfricaThe volume of sediment in the Bulbergfontein Dam was computed after mapping the area of the dam and ascertaining the depth of the sediment by digging and augering. The watershed of the impoundment had been delimited by means of aerial... -
TOXIC CONCENTRATION OF FREE AMMONIA TO BRACHIONUS CALYCIFLORUS PALLAS, A ROTIFER PEST SPECIES FOUND IN HIGH RATE ALGAL PONDS (HRAP's)
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: IreneJ. de Moor --- National Institute for Water Research, Republic of South AfricaLaboratory tests on Brachionus calyciflorus Pallas indicate that at low concentrations of free ammonia (< 7 mg l −1) pH levels up to 9,85 could be tolerated for 96 h without apparent ill effect. Free ammonia concentrations > 14,4 mg... -
APPARENT PREDATION OF MICROCYSTIS AERUGINOSA KüTZ. EMEND ELENKIN BY A SAPROSPIRA-LIKE BACTERIUM IN A HYPERTROPHIC LAKE (HARTBEESPOORT DAM, SOUTH AFRICA)
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: P.J. Ashton --- , South Africa R.D. Robarts --- , South AfricaThe cyanobacterium Microcystis aeruginosa is the dominant autotroph in hypertrophic Hartbeespoort Dam, South Africa. Tn early summer (November) of 1983 and 1984 Microcystis colonies were heavily colonized by a gram-negative, spiral-shaped organism whose filaments appeared as si.ngle cells under both... -
OBSERVATIONS ON THE DISTRIBUTION, EMERGENCE AND BEHAVIOUR OF CENTRAL AFRICAN CHAOBORIDAE
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: SA Mitchell --- Unit for Limnology, South AfricaThe distribution of four species of Chaoboras over selected parts of Zimbabwe is given. The effect of temperature on the duration of the larval life cycle is discussed in relation to the generation time and the lunar periodicity of the... -
IMPLICATIONS OF WATER RELEASE FROM THE PONGOLAPOORT DAM FOR THE FISH AND FISHERY OF THE PHONGOLO FLOODPLAIN, ZULULAND
Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: G.S. Merron --- , South Africa M.N. Bruton --- , South Africa P. la Hausse de Lalouviere --- , South AfricaWetland fish stocks can usually be sustained as long as the natural flood regime is maintained, but unnatural disruption of the flooding pattern can interfere with fish spawning and feeding. The dynamics of the Phongolo floodplain fish community are determined... -
THE USE OF TOXICITY TESTING IN EFFLUENT REGULATION AND CONTROL: A NEW DIMENSION TO ASSESSMENT AND MANAGEMENT OF WATER QUALITY IN SOUTH AFRICA
Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: D.J. Roux --- , South AfricaEfficient management tools are continually required to cope with increasing demands placed on the quality and quantity of aquatic resources. Recent developments in environmental monitoring indicate the importance of incorporating biological indicators in assessment programmes. Aquatic toxicology has consequently become... -
Correlates of stocking rate and overgrazing in the Leliefontein Communal Reserve, central Namaqualand
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: S.W. Todd M.T. HoffmanWe investigate the correlates of stocking rate in the Leliefontein communal reserve and attempt to provide a mechanistic explanation of the controlling factors. We further speculate on how high stocking rates are maintained in relation to the current state of... -
The effects of topo-edaphic variables and cultivation on the woody vegetation of Weenen Nature Reserve, KwaZulu-Natal
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: L Breebaart TG O'Connor JC Hughes CD Morris IA RushworthThe soil types and woody vegetation of Weenen Nature Reserve (WNR), KwaZulu-Natal, were described. Mispah, overlying shale, and Shortlands, overlying dolerite were the most common of 18 the soil forms encountered. Six vegetation types were identified by TWINS PAN which... -
The influence of tree density on the grass layer of three semi-arid savanna types of southern Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: CGF Richter HA Snyman GN SmitThe influence of bush density on the grass component of the herbaceous layer was investigated for three savanna veld types (Molopo Thornveld, Mixed Vaalbos Thornveld, and the Eastern Grass and Bushveld) in the Northern Cape and North-West Province of South... -
A study of animal production under different grazing regimes in the False Upper Karoo at Grootfontein
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: PCV du ToitThree systems of animal production on the fragile Karoo veld, i.e. multi-paddock rotational grazing, pauci-paddock rotational grazing and continuous grazing were studied. Of these systems, multi-paddock rotational grazing gave the best results with continuous stocking resulting in the worst. All... -
Kudu foraging behaviour: influenced by animal density?
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: C van der WaalIn deciduous savanna a marked decline in browse availability characterises the late dry season and apparently regulates populations of large browser species such as kudu. The dry season utilisation patterns of two woody species, Acacia tortilis and Boscia albitrunca, in... -
The effect of defoliation environment on primary growth allocation and secondary tiller recruitment of two bunchgrasses
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: KW Tomlinson TG O'ConnorCompositional shifts of bunchgrass species in the Southern Tall Grassveld in response to different combinations of non-selective mowing and burning appear to reflect differences in growth strategy among species, but there are few studies of South African grasses designed to... -
Genetic variation between ecotypic populations of Chloris roxburghiana grass detected through RAPD analysis
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: W Ngoyawu Mnene J Hanson WN Ekaya JI Kinyamario P Mweki G Lall JW Stuth RH JamnadassChloris roxburghiana is an important rangeland grass in Kenya. In some areas it has disappeared due to land degradation resulting from overgrazing and drought. Efforts to re-introduce the grass through re-seeding using seeds from research stations have had little success... -
The relation between herbivore density and relative resource density at the landscape level: Kudu in semi‐arid savanna
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: C. Fabricius --- , Republic of South AfricaEcological theory can help range scientists to understand the determinants of ecological animal density or, in range management terms, ‘carrying capacity’. The relation between the relative density of resources and herbivore density is illustrated by regressions of the ecological density... -
Defoliation patterns of three grass species in sourveld grazed by cattle and sheep
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: M.B. Hardy --- , Republic of South Africa N.M. Tainton --- Department of Grassland Science, Republic of South Africa C.D. Morris --- , Republic of South AfricaA point‐based technique was used to determine the effects of grazing, due to stocking rate and cattle‐to‐sheep ratio, on the defoliation pattern of three grass species. At each of 100 systematically located points per grazing treatment the nearest plant of... -
An analysis of a stocking rate trial at Chobela, southern Mozambique
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: J.R. Timberlake --- , MozambiqueAn analysis is presented of data from a stocking rate trial carried out in 1962–1963 at Chobela Livestock Station in southern Mozambique. The data set had limitations but an attempt was made to draw any conclusions possible for management. Data... -
Diet selection by sheep and goats in the Arid Karoo
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: P.C.V. du Toit --- Department of Agriculture, Republic of South Africa C.D. Blom --- Department of Agriculture, Republic of South Africa W.F. Immelman --- Department of Agriculture, Republic of South AfricaThe diet selected by Afrino, Dorper and Merino sheep, and Angora goats was studied in the Arid Karoo at Carnarvon. The diets selected by these small stock species and breeds was established through breed by breed comparisons, with a view... -
Diet selection by sheep and goats in the Noorsveld
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: P.C.V. du Toit --- Department of Agriculture, Republic of South Africa C.D. Blom --- Department of Agriculture, Republic of South AfricaThe diet selection of Angora and Boer goats, and Dorper and Merino sheep was studied in the Noorsveld to ascertain differences in their food preferences. This information will facilitate the identification of possible goat and sheep combinations to improve the... -
The grazing index method of range condition assessment
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: P.C.V. du Toit --- Department of Agriculture, Republic of South AfricaOwing to the difficulty of examining succession theory in the Karoo, it is suggested the ecological index method (EIM), be replaced by the grazing index method (GIM), through the introduction of grazing index values (GIV) for Karoo plant species. The... -
Calculating stocking rates for game ranches: Substitution ratios for use in the Mopani Veld
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: B. Dekker --- Northern Province Department of Agriculture, Republic of South AfricaDetermination of carrying capacity for mixed‐ or multi‐species grazing systems is complex. Commonly, each species is compared to the standard large stock unit (LSU) used in conventional agriculture. However, this approach does not allow for ecological separation, and thus overlooks... -
Description of a method for assessing veld condition in the Karoo
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: P.C.V. du Toit --- , Republic of South AfricaIn the past, veld condition in the Karoo was assessed according to the ecological index method. This has recently been replaced by the grazing‐index method. The principles governing the method of botanical survey remain the same, but this methodology has... -
Perspective article: The evolving use of stocking rate indices currently based on animal number and type in semi‐arid heterogeneous landscapes and complex land‐use systems
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: M.J.S. Peel --- , Republic of South Africa H. Biggs --- , Republic of South Africa P.J.K. Zacharias --- Department of Range and Forage Resources, Republic of South AfricaMethods of determining stocking rate based on metabolic mass, animal type and biomass are reviewed in the context of equilibrial/disequilibrial paradigms. In South Africa, the calculation of ‘carrying capacity’ is based on conversion of animal species to metabolic mass equivalents... -
Post-wildfire regeneration of rangeland productivity and functionality – observations across three semi-arid vegetation types in South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Johannes AD Breedt --- School of Biological Sciences, South Africa Niels Dreber --- School of Biological Sciences, South Africa Klaus Kellner --- School of Biological Sciences, South AfricaWildfires can have significant impacts on rangeland productivity and functionality causing substantial economic losses to affected farmers. In August 2011, such wildfires swept through the North West province of South Africa, destroying large areas of grazing and farm infrastructure. There... -
Perceptions of climate change and barriers to adaptation amongst commonage and commercial livestock farmers in the semi-arid Eastern Cape Karoo
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Claudette Muller --- Department of Environmental Science, South Africa Sheona E Shackleton --- Department of Environmental Science, South AfricaClimate change is expected to adversely affect agriculture in South Africa. A rise in variable and unfavourable conditions is likely to surpass the limits of current coping mechanisms of farmers, compelling them to implement more resilient adaptive measures to decrease... -
Savanna browse production. 1: Determinants and measurement
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Caryn A Penderis --- School of Life Sciences, South Africa Kevin P Kirkman --- Grassland Science, South AfricaWith the rapid expansion of wildlife ranching and conservation in South African savannas and the resultant increase in multi-species grazing and browsing systems, information on browse production potential is essential for determination of carrying capacity. This study, conducted on three... -
Savanna browse production. 2: Prediction
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Caryn A Penderis --- School of Life Sciences, South Africa Kevin P Kirkman --- Grassland Science, South AfricaBrowsing herbivores are generally highly selective feeders, selecting for new shoots and young plant material. Determinations of browser carrying capacity are then greatly inflated when based on available browse biomass estimates. Our study was initiated with the aim of modelling... -
Technical and institutional capacity in local organisations to manage decentralised forest resources in Uganda
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: N. Turyahabwe C.J. Geldenhuys S. Watts A.Y. BananaUganda is one of the sub-Saharan African countries that has devolved the management of forest resources. Meaningful devolution, however, requires that local governments and other community organizations should have capacity in terms of adequate and competent human resources, finance, information,... -
Staining roots to determine root growth potential of Pinus taeda
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: Janusz Zwolinski --- Forestry Programme, South Africa CurtM. Peterson --- Department of Botany and Microbiology, USA Colin Dyer --- , South AfricaRoot growth potential (RGP) consists of two components: elongation of existing roots and initiation of new roots. Currently, RGP is determined on planting stock from which any “white roots” present at the start of the test are removed. This study... -
Career Identity Related Decision Making among IsiXhosa-Speaking Adolescents
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Andile Alfred Mdikana --- University of Johannesburg, Joseph Seabi --- University of Witwatersrand, Sibusiso Ntshangase Nonkululeko Sandlana --- University of Fort Hare,This study investigated career identity development among IsiXhosa speaking adolescents in South Africa. A sample of 40 Grade 12 learners, comprising 20 females and 20 males participated in the study (Age range 17 to—24 years). The Identity Status Interview of... -
Racial/Ethnic Identity among Creole Peoples in Mauritius
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Christin M. Jungers --- Franciscan University of Steubenville, USA Jocelyn Gregoire --- Duquesne University, USA Leslie Slagel --- Women's Center & Shelter of Greater Pittsburgh, USAThis article provides the findings of qualitative research into the perceptions of racial/ethnic identity among the Creole community of Mauritius. Participants were 24 Creole Mauritians (males = 16, females = 8, age range = 22–69 years). Interview data were collected... -
Career-story Interviewing Using the Three Anecdotes Technique
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Jacobus G. Maree --- University of Pretoria,This article describes the value of using the Three Anecdotes Technique (TAT) during career-story interviewing. The TAT is a technique aimed at eliciting clients' three earliest memories to help counsellors identify clients' preoccupations and thereby support them to deal with... -
Community Centred Learning: A Pathway to Community Engagement
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Lebogang Lorraine Phiri --- University of South Africa, South Africa Natasha Hendricks --- Medical Research Council, South Africa Mohamed Seedat --- University of South Africa, South AfricaWe report on the experiences of participants on a course which represented a pathway to community engagement. The 76 participants (20 males, 46 females), from two low-income South African communities, were part of a multi-lingual group representing English, Africans, isiZulu... -
Research Agenda to Facilitate Community Participation In HIV Vaccine Research: A Participatory Approach
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Anthea Lesch --- Stellenbosch University, South Africa Sagri Singh --- International AIDS Vaccine Initiative Country and Regional Programmes, USA Zuhayr Kafaar --- Stellenbosch University, South Africa Leslie Swartz --- Stellenbosch University, South Africa Alexandre Menezes --- International AIDS Vaccine Initiative Country and Regional Programmes, USAThis article reports on a participatory process to generating a research agenda to guide research on community participation in HIV vaccine research. Community members representing stakeholder parties involved in the HIV vaccine research enterprise were invited to participate in the... -
Fully Trend Preserving Operators
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: C.H. RohwerThe concept of fully trend preserving (ftp) operators on sequences was introduced to prove variation preservation on the outputs of LULU-separators. It turns out that this property is central in further analysis of compositions of LULU-smoothers, and other smoothers. Several... -
Stability of asymptotic properties of Hille-yosida operators under perturbations and retarded differential equations
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Lahcen ManiarWe give conditions on the strongly continuous semigroup (T 0(t)) t≥0, generated by the part of a Hille-Yosida operator A on X 0 := D(A), and a non-autonomous family of operators (B(t)) t≥0 such that the evolution family (U(t,s)) t≥s≥0,... -
Quasi-inverses and approximation with min-max operators in the ℓ1-norm
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: C.H. RohwerThe semi-group of min-max operators, as used for nonlinear smoothing or multiresolution analysis, has no nontrivial inverses. Having chosen a smoother for a specific purpose, the secondary approximation problem of minimising damage was considered by showing that quasi-inverses exist. This... -
A note on localized directional weak lower semi-continuity
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: E. BrüningIn minimization problems for functionals f : M → R, M ⊆ E a subset of some infinite dimensional Banach space E, we typically have to rely on weak (sequential) lower semi-continuity of f on the whole space E even... -
Montel resolvents and uniformly mean ergodic semigroups of linear operators
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: AngelaA. Albanese --- Dipartimento di Matematica e Fisica “E. De Giorgi”, Italy José Bonet --- Instituto Universitario de Matemática Pura y Aplicada IUMPA, Spain WernerJ. Ricker --- Math.-Geogr. Fakultät, GermanyFor C 0-semigroups of continuous linear operators acting in a Banach space criteria are available which are equivalent to uniform mean ergodicity of the semigroup, meaning the existence of the limit (in the operator norm) of the Cesàro or Abel... -
Formative evaluation of the STAR intervention: improving teachers’ ability to provide psychosocial support for vulnerable individuals in the school community
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Ronél Ferreira --- Department of Educational Psychology, South Africa Liesel EbersöhnThe article describes the pilot phase of a participatory reflection and action (PRA) study. The longitudinal investigation explores teachers’ ability to provide psychosocial support within the context of HIV/AIDS following an asset-based intervention. The study ensued from our desire to... -
HIV/AIDS, the erosion of social capital and the collapse of rural livelihoods in the Nkomazi district of South Africa
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Hannah Dawson --- University of Johannesburg, South AfricaHIV/AIDS is a major driver of livelihood insecurity. The AIDS epidemic, through the death or disability of economically productive adults, destabilises and erodes the social networks which sustain the livelihoods of vulnerable households. This paper draws upon research with home-based... -
Sublethal effects of manganese on the haematology and osmoregulation of Oreochromis mossambicus after acute exposure
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: I Barnhoorn JHJ van VuurenOreochromis mossambicus were exposed for 96 hours to sublethal manganese concentrations in a continuous flow-through system. The sublethal concentrations were determined from the LC50 value of manganese (1.723mg/l), which included a 10% (172.3mg/l), 15% (259.8mg/l) and 20% (345.6mg/l) concentration of... -
The effects of lead, water hardness and pH on oxygen consumption, plas- ma chlorides and bioaccumulation in the freshwater fish Tilapia sparrmanii
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: WJ van Aardt LCR VenterClosed system respirometry was performed on captive juvenile Tilapia sparrmanii exposed for 96 hours to a range of Pb-acetate concentrations in hard and soft water to determine the effect of Pb in relation to water hardness and pH. For hard... -
A note on copper bioaccumulation in Mozambique tilapia, Oreochromis mossambicus (Osteichthyes: Cichlidae)
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Irene Naigaga Horst KaiserCopper (Cu) is one of the most commonly reported metal pollutants in African water bodies, but there are few studies on African freshwater fish species of copper accumulation and copper toxicity. Adult O. mossambicus were exposed to 0mg l−1 (control)... -
Estimation of preferred water flow parameters for four species of Simulium (Diptera: Simuliidae) in small clear streams in South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: NicholasA Rivers-Moore FerdinandC de Moor SharonA Birkholz RobertW PalmerBlackfly larvae typically occur in fast-flowing riffle sections of rivers, with different blackfly species showing preferences for different hydraulic conditions. Very little quantitative data exist on hydraulic conditions linked to the blackfly species occurring in South African streams. Stones-in-current biotopes... -
Acute effects of Cu on oxygen consumption and 96 hr-LC50 values in the freshwater fish Tilapia sparrmani (Teleostei: Cichlidae) in Mooi River hard water, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: WJ van Aardt Mynhardt HoughThe median lethal copper (Cu) concentration (96 hr-LC50) values for acute Cu toxicity for Tilapia sparrmanii (live mass: 30 ± 8g) in Mooi River hard water of dolomitic origin at 20 °C, pH 7.9, was 68.1 μmol l−1. At this... -
The toxicity of zinc to a selected macroinvertebrate, Adenophlebia auriculata (Ephemeroptera, Leptophlebiidae): method development
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: V Everitt --- Centre for Aquatic Toxicology, South Africa P-A Scherman --- Centre for Aquatic Toxicology, South Africa MH Villet --- Department of Zoology and Entomology, South AfricaThe South African water quality guidelines for the protection of the aquatic environment are constantly being updated. The Centre for Aquatic Toxicology of the Institute for Water Research, Rhodes University, uses artificial streams and toxicological methods to contribute to the... -
The sublethal effects of copper and lead on the haematology and acid-base balance of the groovy mullet, Liza dumerili
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: HM Mzimela --- Coastal Research Unit of Zululand, Department of Zoology, South Africa V Wepener --- Coastal Research Unit of Zululand, Department of Zoology, South Africa DP Cyrus --- Coastal Research Unit of Zululand, Department of Zoology, South AfricaToxicity bioassays were conducted on groovy mullet, Liza dumerili, using copper and lead, in order to assess how these metals affected their blood haematology and acid-base balance. Short-term (96 hours) exposure to lead caused significantly more haematological response [PCO2] than... -
Influence of salinity and cadmium on the survival and osmoregulation of Callianassa kraussi and Chiromantes eulimene (Crustacea: Decapoda)
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: M Thwala --- Department of Zoology and Coastal Research Unit of Zululand, South Africa BK Newman --- Department of Zoology and Coastal Research Unit of Zululand, South Africa DP Cyrus --- Department of Zoology and Coastal Research Unit of Zululand, South AfricaThis study investigated the influence of salinity and cadmium on the survival and osmoregulatory capability of two decapod crustaceans, Callianassa kraussi and Chiromantes eulimene. Callianassa kraussi was able to survive in salinities of 5–55 over 96 h, whilst C. eulimene... -
Effect of exposure to cadmium on the tropical freshwater prawn Macrobrachium rosenbergii
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: HA Kaoud --- Department of Veterinary Hygiene and Environmental Pollution, Egypt A Rezk --- Department of Veterinary Hygiene and Environmental Pollution, EgyptThe effect of cadmium (Cd) on mortality, resistance and bioaccumulation in the tropical freshwater prawn Macrobrachium rosenbergii from Egypt were studied. Survival of prawns exposed to Cd doses over 60 μg l−1 were significantly lower than that of prawns exposed... -
Toxicity of the chlorpyrifos-based pesticide Termifos®: effects on behaviour and biochemical and haematological parameters of African catfish Clarias gariepinus
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: CD Nwani --- Department of Zoology and Environmental Biology, Nigeria DO Ugwu --- Department of Zoology and Environmental Biology, Nigeria OC Okeke --- Department of Zoology and Environmental Biology, Nigeria GC Onyishi --- Department of Zoology and Environmental Biology, Nigeria FN Ekeh --- Department of Zoology and Environmental Biology, Nigeria C Atama --- Department of Zoology and Environmental Biology, Nigeria LO Eneje --- Department of Applied Microbiology and Brewing, NigeriaThe present study, conducted in 2012, determined the toxicity of the chlorpyrifos-based pesticide Termifos® and its effects on behaviour and biochemical and haematological parameters in juvenile African catfish Clarias gariepinus. The 96 h LC50, estimated by probit analysis in a... -
Determining the minimum effective dose of rotenone for eradication of alien smallmouth bass Micropterus dolomieu from a South African river
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: MS Jordaan --- CapeNature Scientific Services, South Africa OLF Weyl --- South African Institute for Aquatic Biodiversity, South AfricaIn February 2012 the Rondegat River, in the Cape Floristic Region, was the first river in South Africa where the piscicide rotenone was used to remove an alien invasive fish, smallmouth bass Micropterus dolomieu. In preparation for this treatment, the... -
Rectangular Espacement Does Not Cause Stem Ellipticity in Eucalyptus grandis
Item type: Journal Article • Journal: South African Forestry Journal • Authors: Brian Bredenkamp --- Natal Forestry Research Centre, Department of Environment Affairs,Eucalyptus grandis grown with varying degrees of rectangularity of growing space showed that stem ellipticity could not be attributed to proximity of nearest neighbours. Stem ellipticity was markedly orientated along wind directions prevailing in the Eastern Transvaal. Extreme rectangularity of... -
The Effect of Long Term Stratification on the Germination of Pinus Pinaster Ait
Item type: Journal Article • Journal: South African Forestry Journal • Authors: D. G.M. Donald --- ,Trials to determine the effect of long term stratification on Pinus pinaster seed subjected to periods of room temperature storage following cold storage and cold storage only indicated that the former could reduce viability of the seedlots. Dormancy of all... -
Spatial quality improvement of a toxic industrial effluent, based on physico-chemistry, algal community changes and algal bioassay
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: MI Abdel-Hamid --- Botany Department, Egypt EI Abdel-Aal --- Botany Department, Egypt YA Azzab --- Botany Department, EgyptSpatial recovery of a highly alkaline and ammonia-rich industrial effluent was assessed along a wastewater receiving drain near Mansoura City in 2006. Spatial changes in physico-chemical characteristics and water quality index indicated a progressive downstream improvement of wastewater quality, and... -
Vertical migration, catchability and acoustic assessment of semi-pelagic Cape horse mackerel Trachurus trachurus capensis in the southern Benguela
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: M Barange SC Pillar I Huse L HutchingsThe vertical distribution and migration of the Cape horse mackerel Trachurus trachurus capensis were investigated on the basis of midwater and bottom trawl collections taken over diel cycles at two sites on South Africa's south coast. Attempts were also made... -
Sterol-specific membrane interactions with the toxins from Karlodinium micrum (Dinophyceae) — a strategy for self-protection?
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: JR Deeds AR PlaceThe lipophilic toxins from Karlodinium micrum, KmTX, have negative effects on several co-occurring phytoplankton species, yet appear to have no effect on K. micrum itself. One of these compounds, KmTX2, has differing toxicity towards eukaryotic membranes with differing sterol compositions... -
Isolation and characterisation of photoactive haemolytic toxin from Heterocapsa circularisquama
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: Y Miyazaki T Iwashita K Yamaguchi T Oda Y Matsuyama T HonjoRed tides of Heterocapsa circularisquama, identified as a new species of dinoflagellate a few years ago, have frequently caused mass mortality of several species of bivalve in Japan, whereas no harmful effects on fish have been reported so far. We... -
Toxicological requirements for risk assessment of shellfish contaminants: a review
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: R MundayThere is increasing concern by consumers with regard to the health aspects and safety of foodstuffs. Most food additives and contaminants are controlled by regulatory authorities, with Acceptable Daily Intakes (ADIs) having been set on the basis of detailed acute... -
Accumulation of diarrhetic shellfish poisoning toxins in the oyster Crassostrea gigas and the mussel Choromytilus meridionalis in the southern Benguela ecosystem
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: GC Pitcher --- Branch: Fisheries Management, Department of Agriculture, South Africa B Krock --- , Germany AD Cembella --- , GermanyDiarrhetic shellfish poisoning (DSP) poses a significant threat to the safe consumption of shellfish in the southern Benguela ecosystem. The accumulation of DSP toxins was investigated in two cultivated bivalve species, the Pacific oyster Crassostrea gigas and the mussel Choromytilus... -
Towards a Technology Policy for Renewable Energy Development in Africa: A Systems of Innovation Perspective
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Ogundiran Soumonni --- Wits Business School, South AfricaThe objective of this paper is to use the systems of innovation (SI) perspective to describe how African countries might increase their rates of access to electricity, and by extension their capacity for broad-based industrialization, through renewable energy. The paper... -
The relationship between torsional rigidity and bending strength characteristics of SA pine
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: W. M. G. Burdzik [d849458e21] P. D. Nkwera --- Department of Civil Engineering,The modulus of rigidity, G, and bending moment ofelasticity, MOE, of SA pine are evaluated from a direct torsion test and bending tests. Specimens were subjected to a series of tests with the view to determining direct torsional rigidity, apparent... -
Modelling maximum canopy conductance and transpiration in Eucalyptus grandis stands not subjected to soil water deficits
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: J. M. Campion --- , Republic of South Africa P.J. Dye --- Environmentek, CSIR, c/o Agrometeorology, Republic of South Africa M.C. Scholes --- School of Animal, Plant and Environmental Sciences, Republic of South AfricaThere is much current interest in predicting the maximum amount of water that can be transpired by Eucalyptus trees. It is possible that industrial waste water may be applied as irrigation water to eucalypts and it is important to predict... -
Grade verification of SA pine — bending, modulus of rupture, modulus of elasticity, tension and compression
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: Walter Burdzik --- , AfricaThe last verification of SA pine timber strengths was done in the early 1980s. Uses of the pine logs and the rotation periods have changed. This investigation was undertaken to verify the visual grade 5 grading rules of SANS 1783-2... -
Corewood in South African pine: necessity and opportunities for improvement
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: FS Malan --- , South AfricaSouth Africa has made excellent progress in breeding plantation trees fulfilling the primary demands of improved volume growth, stem and branching characteristics, tolerance to pests and diseases, and general adaptability. This has had marked positive impacts on wood quality, as... -
The flexural properties of young Pinus elliottii x Pinus caribaea var. hondurensis timber from the Southern Cape and their prediction from acoustic measurements
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: CB Wessels --- Department of Forest and Wood Science, South Africa GP Dowse --- Department of Forest and Wood Science, South Africa HC Smit --- Department of Forest and Wood Science, South AfricaThe objectives of this study were to determine the bending strength and stiffness properties of young Pinus elliottii x P. caribaea var. hondurensis timber from the Southern Cape, South Africa, and to evaluate the predictability of these properties from acoustic... -
Coarse root–shoot allometry of Pinus radiata modified by site conditions in the Western Cape province of South Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: H Pretzsch --- Chair for Forest Growth and Yield, Germany P Biber --- Chair for Forest Growth and Yield, Germany E Uhl --- Chair for Forest Growth and Yield, Germany P Hense --- Chair for Forest Growth and Yield, GermanyThe relationship between root and shoot growth and how it is modified by chronic or episodic drought stress is so far not well understood. Allometric partitioning theory (APT) supposes a constant root–shoot allometry. Optimal partitioning theory (OPT) assumes that plants’... -
Effects of irregular stand structure on tree growth, crown extension and branchiness of plantation-grown Pinus patula
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Simon A Ackerman --- Department of Forest and Wood Science, South Africa Pierre A Ackerman --- Department of Forest and Wood Science, South Africa Thomas Seifert --- Department of Forest and Wood Science, South AfricaThe practice of combining row and selective thinning in commercial pine plantation silviculture carries the risk of unwanted irregularities in tree distribution, a situation that is aggravated when tree selection during marking is poor. The potential consequences of poor tree... -
Variation in strength, stiffness and related wood properties in young South African-grown Pinus patula
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: C Brand Wessels --- Department of Forest and Wood Science, South Africa Francois S Malan --- Komatiland Forests, South Africa Daan G Nel --- Centre for Statistical Consultation, South Africa Tim Rypstra --- Department of Forest and Wood Science, South AfricaThe objective of this study was to examine the variation in and intercorrelation among wood properties determining the suitability of 16- to 20-year-old South African-grown Pinus patula trees for structural timber. A total of 1 112 sawn boards from 340... -
Wellness programme and health policy development at a large faith-based organisation in Khayelitsha, South Africa
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: ElizabethD ArendThis paper presents a case study of wellness programme and health policy development based on an HIV/AIDS organisation's Khayelitsha site in the Western Cape Province, South Africa. The study examines the different challenges that the organisation faces in relation to... -
A network-level explanation for the differences in HIV prevalence in South Africa's racial groups
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Chris Kenyon --- Department of Medicine, South Africa Sipho Dlamini --- Department of Medicine, South Africa Andrew Boulle --- School of Public Health and Family Medicine, South Africa RichardG White --- , United Kingdom Motasim Badri --- Department of Medicine, South AfricaAnalyses of individual-level risk factors have not been able to adequately explain why HIV has spread so extensively in southern Africa and why this has occurred especially within certain racial or ethnic groups. Using data from a longitudinal study of... -
A chronic toxicity test protocol using Caridina nilotica (Decapoda: Atyidae) and the generation of salinity toxicity data
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: AR Slaughter CG Palmer WJ MullerSalinization of freshwater resources is an increasing global problem, yet there is a paucity of chronic salinity tolerance data linked to very few chronic toxicity test protocols. This research aimed to generate a chronic toxicity test protocol and protective salinity... -
A laboratory assessment of the potential molluscicidal potency of Jatropha curcas aqueous extracts
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: MJ Chimbari CJ ShiffPreliminary laboratory studies were conducted to determine the molluscicidal potency of Jatropha curcas, the physic nut. Biomphalaria glabrata and Bulinus globosus snails were exposed to varying concentrations of aqueous extracts of crushed J. curcas seeds from unripe, ripe and overripe... -
Application of a direct toxicity assessment approach to assess the hazard of potential pesticide exposure at selected sites on the Crocodile and Magalies rivers, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: TM Ansara-Ross --- Centre for Aquatic Research, Department of Zoology, South Africa V Wepener --- Centre for Aquatic Research, Department of Zoology, South Africa PJ van den Brink --- Department of Aquatic Ecology and Water Quality Management, The Netherlands MJ Ross --- Centre for Aquatic Research, Department of Zoology, South AfricaThe potentially hazardous effects of agricultural pesticide usage in the Crocodile (west) Marico catchment were evaluated using the Danio rerio and Daphnia pulex lethality, Selenastrum capricornutum growth inhibition and the Ames mutagenicity plate incorporation assays. Hazard assessment categories are proposed... -
Why Carcinus maenas cannot get a grip on South Africa's wave-exposed coastline
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: SL Hampton CL GriffithsThe European green crab Carcinus maenas has established considerable breeding populations in harbours and sheltered bays in the South-Western Cape, South Africa, but appears unable to flourish on the wave-exposed coastline. This study compares the abilities of C. maenas and... -
Can brush-cutting of Pteronia paniculata improve the composition and productivity of veld in the Succulent Karoo, South Africa?
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: N Saayman --- Department of Agriculture: Western Cape, South Africa CD Morris --- Agricultural Research Council, South Africa MB Hardy --- Department of Agriculture: Western Cape, South Africa JC Botha --- Department of Agriculture: Western Cape, South AfricaPteronia paniculata is an indigenous, unpalatable shrub that invades mismanaged Karooveld, resulting in degraded rangelands with low species diversity and grazing potential. We conducted a series of trials in the Succulent Karoo Randteveld near Barrydale to determine if the uniform... -
Prediction models for estimating available fodder of two savanna tree species (Acacia dudgeoni and Balanites aegyptiaca) based on field and image analysis measures
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: P Savadogo B ElfvingBrowse production is difficult to measure non-destructively without some level of subjectivity combined with a lack of accuracy and reproducibility. This study examined the possibility of using ground-based photographs to estimate browse production. Thirty five sample trees of Acacia dudgeoni... -
Results from six Pinus taeda nursery trials with the herbicide pendimethalin in the USA
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: DB South --- School of Forestry and Wildlife Sciences and Alabama Agricultural Experiment Station, USA TE Hill --- School of Forestry and Wildlife Sciences and Alabama Agricultural Experiment Station, USAPendimethalin is used by some nursery managers to control weeds in Eucalyptus and Pinus seedbeds and cutting beds of Pinus. Six trials were implemented in open-rooted seedbeds to test the response of Pinus taeda to postemergence (to the crop) applications... -
Steroid hormone concentrations and physiological toxicity of water from selected dams in Namibia
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: AK Faul --- Department of Biological Sciences, Namibia E Julies --- Department of Biological Sciences, Namibia EJ Pool --- Department of Medical Biosciences, South AfricaNamibia is a semi-arid to arid country and has most of its surface water in dams built on ephemeral rivers. Whilst water quality is often measured in terms of bacterial contamination and general physico-chemical characteristics, this study extends water quality... -
Salinity tolerance of the South African endemic amphipod Grandidierella lignorum (Amphipoda: Aoridae)
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: NF Masikane --- School of Life Sciences, South Africa BK Newman --- Coastal Systems Research Group, Natural Resources and the Environment, South Africa UM Scharler --- School of Life Sciences, South AfricaThe endemic amphipod Grandidierella lignorum is an organism potentially suited to the toxicity testing of coastal water and sediment in South Africa. The ranges of salinity and temperature at which G. lignorum can be used for toxicity testing were investigated... -
Mitochondrial dysfunction and human immunodeficiency virus infection
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: G Van der Watt --- Division of Chemical Pathology,Human immunodeficiency virus (HIV) infection and the pharmacological treatment thereof have both been shown to affect mitochondrial function in a number of tissues, and each may cause specific organ pathology through specific mitochondrial pathways. HIV has been shown to kill... -
Association of waist circumference with perception of own health in urban African males and females: the Sympathetic Activity and Ambulatory Blood Pressure in Africans (SABPA) study
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: J Botha --- Physical Activity Sport and Recreation (PhASRec), School of Biokinetics, Recreation and Sport Science, L Malan --- Hypertension in Africa Research Team (HART), School for Physiology, Nutrition and Consumer Sciences, JC Potgieter --- School for Psychosocial Behavioural Sciences, North-West University, HS Steyn --- Statistical Consultation Service, North-West University, JH De Ridder --- Physical Activity Sport and Recreation (PhASRec), School of Biokinetics, Recreation and Sport Science,Background: Current waist circumference (WC) cut-points of the Joint Statement Consensus (JSC) (male ≥ 94 cm, female ≥ 80 cm) were compared with a recently proposed WC cut-point (RPWC) (male ≥ 90 cm, female ≥ 98 cm). In this study,... -
Lack of association of glycated haemoglobin with blood pressure and subclinical atherosclerosis in black South Africans: a five-year prospective study
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: ASE Koegelenberg --- Hypertension in Africa Research Team; North-West University, A Kruger --- Africa Unit for Transdisciplinary Health Research, GW Towers --- Centre of Excellence for Nutrition, AE Schutte --- Hypertension in Africa Research Team; North-West University,Objectives: Hypertension and diabetes are common in rapidly urbanising sub-Saharan African communities. However, lack of longitudinal data in these regions prevents adequate analysis of the link between measures of glycaemia and cardiovascular disease. Therefore, we examined the relationships of fasting... -
Lipid rescue: the use of lipid emulsions to treat local anaesthetic toxicity
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: CJ Kruger --- Department of Anaesthesiology and Critical Care, South Africa PC Marwick --- Department of Anaesthesiology and Critical Care, South Africa AI Levin --- Department of Anaesthesiology and Critical Care, South AfricaDespite increasing safety of regional anaesthesia, the growth in the popularity therof implies that local anaesthetic toxicity will occur occasionally. Local anaesthetic cardiotoxicity, even when using “safer” modern local anaesthetics, is notoriously resistant to standard resuscitation. The aim of this... -
Anaesthesia-induced developmental neurotoxicity
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: J Taylor --- Inkosi Albert Luthuli Central Hospital,Recently, concerns regarding anaesthesia-induced developmental neurotoxicity (AIDN) have emerged. The aim of this review was to summarise the available information on AIDN, and to assist the practising anaesthetist in making safe decisions with regard to the administration of anaesthesia in... -
Anaesthetic safety of the Macintosh® oral laryngeal spray device
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: RJ Ing --- School of Medicine, University of Colorado Associate Director of Clinical Research, USA DM Craig --- Department of Surgery, USA A Nowosad --- , MD Twite --- Department of Anaesthesiology, USA AT Bósenberg --- Department of Anesthesiology, USAPrimary hypothesis: A single, maximal hand squeeze of the Macintosh® laryngeal spray atomiser bulb may deliver a toxic dose of local anaesthetic to the oral mucosa of small infants. -
Pattern of domestic violence among pregnant women in Jos, Nigeria
Item type: Journal Article • Journal: South African Family Practice • Authors: ANI Gyuse --- Department of Family Medicine, Nigeria AP Ushie --- ECWA Evengel Hospital, NigeriaBackground: Domestic violence is a global concern. Domestic violence refers to violence inflicted on a partner (mostly females) within the context of the family or an intimate relationship. It is known to be responsible for numerous hospital visits undertaken by... -
Statins: adherence and side-effects
Item type: Journal Article • Journal: South African Family Practice • Authors: DJ Blom --- Division of Lipidology, Department of Medicine,Many patients either do not adhere to, or fail to persist with, long-term lipid-lowering therapy. This unfavourable medication utilisation behaviour compromises potential treatment benefit. In retrospective studies, patients aged 50–65 had the highest adherence rates, while both younger and older... -
Aminoglycoside-induced balance deficits: a review of vestibulotoxicity
Item type: Journal Article • Journal: South African Family Practice • Authors: C Rogers --- Division of Communication Sciences and Disorders, L Petersen --- Division of Communication Sciences and Disorders,This article aims to inform clinicians about the current knowledge on aminoglycoside-induced vestibulotoxicity through a review of the literature. The effects of vestibulotoxicity are irreversible and may be profoundly disabling. It would appear that the sooner vestibular rehabilitation therapy is... -
Lactic acidosis, risk factors and predictive laboratory markers: a nested case control study in South Africa
Item type: Journal Article • Journal: South African Family Practice • Authors: CA Luke --- Discipline of Family Medicine, MYS Moosa --- Department of Infectious Disease, TM Esterhuizen --- Program of Bio Research Ethics and Medical Law, Division of Public Health Medicine, SE Knight --- Discipline of Public Health Medicine, S Saman --- Port Shepstone Hospital, A Ross --- Discipline of Family Medicine,Background: The incidence of antiretroviral therapy (ART)-induced lactic acidosis and its associated mortality may be reduced by appropriate dosing, risk stratification and early detection. -
An overview of pharmacotherapy-induced ototoxicity
Item type: Journal Article • Journal: South African Family Practice • Authors: Schellack Natalie --- Department of Pharmacy, Faculty of Health Sciences, Naude Alida --- Department of Pharmacy, Faculty of Health Sciences,This article provides an overview of ototoxic medication, as well as different pharmacological and audiological monitoring strategies. Although ototoxic medications play an important role in modern medicine, they also have the capacity to do great harm and lead to significant... -
Lack of association of glycated haemoglobin with blood pressure and subclinical atherosclerosis in black South Africans: a five-year prospective study
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: ASE Koegelenberg --- Hypertension in Africa Research Team; North-West University, A Kruger --- Africa Unit for Transdisciplinary Health Research, GW Towers --- Centre of Excellence for Nutrition, AE Schutte --- Hypertension in Africa Research Team; North-West University,Objectives: Hypertension and diabetes are common in rapidly urbanising sub-Saharan African communities. However, lack of longitudinal data in these regions prevents adequate analysis of the link between measures of glycaemia and cardiovascular disease. Therefore, we examined the relationships of fasting... -
Social sciences and research ethics in developing countries: The perspective from Nigeria
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Emmanuel M. Akpabio --- Department of Geography and Regional Planning, Nigeria Idorenyin F. Esikot --- Department of Philosophy, NigeriaThis study seeks to show how social science-related disciplines in Nigerian universities understand and incorporate ethical principles in research settings within the framework of general institutional practices. We used the University of Uyo, Nigeria, to specifically and empirically explore these... -
Europe's long history of extracting African renewable energy: Contexts for African scientists, technologists, innovators and policy-makers
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Kate B. Showers --- Centre for World Environmental History, United KingdomHaving failed to identify local energy supplies compliant with Kyoto Protocol obligations, the EU turned to Africa in the 21st C. According to definition, the term ‘renewable energy’ source equally describes slaves, forests and rivers. Environmental history analysis demonstrates the... -
Comparative study on municipal solid waste management systems of Maputo City, Mozambique and Chongqing City, China
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Letícia Sarmento dos Muchangos --- Faculty of Urban Construction and Environmental Engineering, People's Republic of China Yuanyuan Liu --- Faculty of Urban Construction and Environmental Engineering, People's Republic of China Baizhan Li --- Faculty of Urban Construction and Environmental Engineering, People's Republic of ChinaThe Municipal Solid Waste Management (MSWM) system in Maputo City, Mozambique, presents several flaws and challenges mainly related to limited financial, human and material resources, as well as low public awareness and participation. This is a South–South comparison study between... -
Anaesthesia and the developing brain
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: Jansie Prozesky --- Department of Pediatric Anesthesia, USAIncreasing concern about the effect of anaesthesia on the infant and young child is being raised by healthcare practitioners, as well as the public. Immature neurons exposed to anaesthesia may lead to apoptosis and long-term neurobehavioural deficits in animals. The... -
Labour epidural analgesia audit in a teaching hospital in a developing country
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: G.G. Jacobs-Martin --- Department of Anesthesiology and Critical Care, South Africa J.L. Burke --- Department of Anesthesiology and Critical Care, South Africa A.I. Levin --- Department of Anesthesiology and Critical Care, South Africa A.R. Coetzee --- Department of Anesthesiology and Critical Care, South AfricaBackground: Neuraxial analgesia is currently considered to be the most effective method of intrapartum analgesia, causing little maternal and foetal sedation. While epidural analgesia has been well studied in developed countries, it is uncertain whether or not the results, particularly... -
Industrial development for Africa: Trade, technology and the role of the state
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Padmashree Gehl Sampath --- United Nations Conference on Trade and Development, SwitzerlandThe discourse on the nature of the developmental state and industrial policy options for Africa has become central to debates on how to promote overall growth and prosperity in the continent. This article poses a fundamental question on the nature... -
Foreign direct investment and local technological capabilities in least developed countries: some evidence from the Tanzanian manufacturing sector
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Bitrina Diyamett --- Science, Technology and Innovation Policy Research Organisation (STIPRO), Tanzania Musambya Mutambla --- Science, Technology and Innovation Policy Research Organisation (STIPRO), TanzaniaForeign direct investment has been found to be one of the very important ways of building local technological capabilities for developing countries, and an important channel through which international diffusion of knowledge and technology takes place. While this has been... -
Instant mutuality: the development of Maboneng in inner-city Johannesburg
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Alice Nevin --- Department of Social Anthropology, South AfricaIn the context of strategies of urban renewal and gentrification in Johannesburg in a time of rapid urbanisation, the question of how urban renewal and gentrification affect people and their everyday lives must be considered. At present there are numerous... -
Dealing and sharing: the construction of community in a Pretoria public park
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Dennis Edward Webster --- Department of Anthropology and Archaeology, South AfricaThis paper describes how a group of men, who are invisible to the state because they possess no formal legal documentation, such as ID books or passports, and do not take part in the formal economy, live in a public... -
Efficiency of using green algae as biological controllers against toxic algal taxa in cultured Nile tilapia Oreochromis niloticus, based on histopathological examinations
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: SM Aly --- Department of Pathology, Faculty of Veterinary Medicine, Egypt EM Ali --- Department of Environmental Sciences, Faculty of Sciences, Egypt AA Dessouki --- Department of Pathology, Faculty of Veterinary Medicine, Egypt AA Dawah --- Department of Limnology, EgyptThe incidence of harmful cyanobacterial blooms in surface waters has increased in frequency and outbreaks have become more severe. This research aimed at studying the effect of a culture of two green algal species as biological control of the growth... -
Culture environment and hatchery of origin influence growth, condition and feeding organ morphology in the Pacific oyster Crassostrea gigas in South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: A Nel --- Department of Botany and Zoology, South Africa G Pitcher --- Branch: Fisheries Management, Department of Agriculture, Forestry and Fisheries, South Africa NB Richoux --- Department of Zoology and Entomology, South Africa S Jackson --- Department of Botany and Zoology, South AfricaSouth Africa lacks a commercial oyster hatchery. To inform the sourcing of seed for future hatchery establishments, we compared half-sib Pacific oyster Crassostrea gigas cohorts from hatcheries in Namibia and Chile. We measured oyster growth, mortality, condition and feeding organ... -
Toxicity evaluation of effluent from the de-oiling works of a decommissioned Nigerian crude oil pipeline using Palaemonetes africanus
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: NH Amaeze --- Ecotoxicology Laboratory, Department of Zoology, Nigeria FA Adetoro --- Ecotoxicology Laboratory, Department of Zoology, Nigeria OA Adegboro --- Ecotoxicology Laboratory, Department of Zoology, NigeriaOil industry activities often involve the cleaning and replacement of pipelines, usually resulting in the discharge of effluents into waterbodies. The toxicity of de-oiling effluent from a decommissioned crude oil pipeline in the Niger Delta region of Nigeria was assessed... -
Biochemical and haematological responses in African catfish Clarias gariepinus following chronic exposure to NPK (15:15:15) fertiliser
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: MNO Ajima --- Department of Fisheries and Aquaculture Technology, Nigeria OA Ogo --- Department of Biochemistry, Nigeria LE Akpa --- Department of Zoology, Nigeria I Ajaero --- Department of Fisheries and Aquaculture Technology, NigeriaThe indiscriminate use of inorganic fertilisers to boost plant productivity has resulted in negative consequences in aquatic ecosystems. The effects of chronic exposure to NPK (15:15:15) fertiliser at 0.40, 0.80 and 1.60 g l−1 on the haematological and biochemical responses... -
Do dwarf chameleons (Bradypodion) show developmental plasticity?
Item type: Journal Article • Journal: African Zoology • Authors: Ashadee K. Miller --- School of Animal, Plant and Environmental Sciences, University of the Witwatersrand, South Africa Graham J. Alexander --- School of Animal, Plant and Environmental Sciences, University of the Witwatersrand, South AfricaDevelopmental plasticity results from environmental influences on the phenotype of an organism during its development, and its effects are irreversible. The phenomenon of phenotype–genotype uncoupling (plasticity) causes problems in species delineations, and has been suggested as a cause underlying a... -
Morphometric variation in the Tunisian green frog, Rana saharica Anura: Ranidae)
Item type: Journal Article • Journal: African Zoology • Authors: Nabil Amor --- Research Unit: Genetics, Biodiversity and Bio-Resources Development, Biotechnology Institute of Monastir, Tunisia Sarra Farjallah --- Research Unit: Genetics, Biodiversity and Bio-Resources Development, Biotechnology Institute of Monastir, Tunisia Khaled Said --- Research Unit: Genetics, Biodiversity and Bio-Resources Development, Biotechnology Institute of Monastir, TunisiaRana saharica is the most widely distributed anuran in Tunisia. We examined morphological variation in 124 specimens as a function of their geographical origin, using univariate and multivariate statistics with traditional morphometrics. Our results supported the existence of three morphotypes... -
Adaptations to life on arid islands of South Africa: renal performance and phenotypic plasticity in the European rabbit Oryctolagus cuniculus
Item type: Journal Article • Journal: African Zoology • Authors: Gareth J. Tate --- Department of Biological Sciences, South Africa Heather G. Marco --- Department of Biological Sciences, South AfricaMorphological parameters of the mammalian kidney can provide information on the extent to which an animal is able to regulate water relations within its body and cope with arid conditions. Certain groups of mammals, such as rabbits and hares, show... -
White Namibians in tourism and the politics of belonging through Bushmen
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Stasja P. Koot --- International Institute of Social Studies, Erasmus University, The NetherlandsNamibian Bushmen, such as the Hai//om and the Ju/’hoansi, are increasingly involved in the growing, white-dominated tourism industry. In this, white Namibians tend to position Bushmen and themselves as people of nature and conservationists. Elsewhere, whites from southern Africa have... -
Exploring the impact of the constructs of the three-domain approach on private social and commercial hospitality provision
Item type: Journal Article • Journal: • Authors: Barry O’Mahony --- Department of Marketing, Tourism and Social Impact, Swinburne University of Technology, Melbourne, AustraliaThis article explores the constructs of private social and commercial hospitality in a panoramic examination of the impact and potential future development of the three-domain approach. Focused primarily (but not exclusively) on the books In Search of Hospitality: theoretical perspectives... -
Are you being fooled? Quality of earnings and quality of government
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: A Riahi-Belkaoui --- University of Illinois at Chicago,This study investigates empirically the impact of the quality of earnings of major listed firms on the quality of government in a large cross-section of countries. It evaluates government performance using measures of six dimensions of governance, namely, voice and... -
The Nature of the South African Corporate Economy: A need to review company objectives?
Item type: Journal Article • Journal: De Ratione • Authors: D Botha --- University of Cape Town,The maximisation of shareholders’ wealth as the primary goal of the firm is the cornerstone of modern financial theory which has its source mainly from USA. The South African corporate economy has significantly different characteristics compared with that of the... -
Aminoglycoside-induced hearing deficits – a review of cochlear ototoxicity
Item type: Journal Article • Journal: South African Family Practice • Authors: L Petersen --- Division of Communication Sciences and Disorders, South Africa C Rogers --- Division of Communication Sciences and Disorders, South AfricaThis article aims to inform the reader about current knowledge of the effects of aminoglycosides on hearing. The hearing loss caused by aminoglycosides is permanent and can negatively affect the individual’s quality of life. Although treatment with aminoglycosides cannot be... -
Ons is Boesmans: commentary on the naming of Bushmen in the southern Kalahari
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: William F. Ellis --- Centre for Humanities Research, South AfricaThis paper examines academic debates about the nomenclature of the San in light of recent ethnographic data. Academic debates centre around two aspects: the apparent complicity of the term “bushman” in construing the San as lower on the hierarchy of... -
Technological capacity and other determinants of economic performance in African countries: Panel data evidence
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Albert A. Okunade --- Department of Economics, USAThe determinants of aggregate economic performance in African countries are economic, institutional and political. To date, rarely has research included a specific conceptual measure of technological index among the core determinants. Consequently, for the first time in the economic development... -
The impact of Ready-to-Use Supplementary Food (RUSF) in targeted supplementation of children with moderate acute malnutrition (MAM) in South Africa
Item type: Journal Article • Journal: South African Family Practice • Authors: Liana Steenkamp --- HIV & AIDS Research Unit, South Africa Ronette Lategan --- Department of Nutrition and Dietetics, Faculty of Health Sciences, South Africa Jacques Raubenheimer --- Department of Biostatistics, Faculty of Health Sciences, South AfricaObjective: To describe catch-up growth in children with moderate acute malnutrition (MAM) on targeted supplementation using Ready-to-Use Supplementary Food (RUSF). -
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... -
Application of multivariate statistics and toxicity indices to evaluate the water quality suitability for fish of three rivers in the Kruger National Park, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: R Gerber --- Centre for Aquatic Research, Department of Zoology, South Africa V Wepener --- Unit for Environmental Sciences and Management, South Africa NJ Smit --- Unit for Environmental Sciences and Management, South AfricaThe water quality of the Olifants, Letaba and Luvuvhu rivers within the Kruger National Park was assessed for their suitability to sustain fish populations. Since water quality assessments result in huge datasets, principal component analysis and an aquatic toxicity index... -
An evaluation of the weight of evidence approach to assess sediment quality in the Mvoti Estuary, KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: BF Shaddock --- Department of Zoology, South Africa V Wepener --- Water Research Group, Unit for Environmental Sciences and Management, South AfricaA weight of evidence approach was evaluated in the Mvoti Estuary, which is affected by point and non-point sources of contaminants. Four sites were sampled in 2005 and assessed along the standard sediment quality triad lines of evidence: sediment chemistry,... -
Aspects of tourism in Kenya
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: John Middleton --- Yale University, USATourism in Kenya dates back to the colonial era. Tourists have invented a map of Kenya that comprises mainly the Rift Valley and the Indian Ocean coast; and they divide the population into ‘noble’ pastoralists and less noble agriculturalists and... -
Grief-stricken: Zimbabwean children in everyday extremity and the ethics of research
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Ross Parsons --- Dept. Anthropology, USAThe essay approaches ethics and research through a description of the beginnings of a study of children's lives under extreme adversity in the Manicaland province of contemporary Zimbabwe. An encounter with an orphaned child is described, highlighting the presence of... -
Exclusivity, hybridity and community: negotiating place, ethnicity and South African realities
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Michael de Jongh --- Department of Anthropology and Archaeology,Living on a tract of land in the Soutpansberg allocated to them in 1888 by President Paul Kruger for ‘services rendered’ to the erstwhile Transvaal Republic (Zuid-Afrikaansche Republiek), is the hybrid and largely exclusive Buys community. As descendants of Jean... -
Exercise in futility or dawn of Afrikaner self-determination: an exploratory ethno-historical investigation of Orania
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: FC de Beer --- Department of Anthropology and Archaeology, South AfricaDue to their ethnic diversity nation states have the arduous task of accommodating various identity conscious groups within their boundaries. Nation-building programmes and strategies are employed mostly to unite the heterogeneous populations of nation states, as is currently also being... -
‘Racism and ethnicity’: Reflections on the debatable permanence of terminology
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: R. D. Coertze --- School of Law, University of South Africa,The concepts of biological and social race currently have debatable value. The first has lost much of its former validity through the increase in our knowledge of the genetic characteristics of humankind. This new knowledge does not support the older... -
Locating community participation in a water supply project—the Galanefhi Water Project (Eritrea)
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Solomon Haile Gebremedhin --- Department of Economic Development, Central Region, Eritrea Francois Theron --- School of Public Management and Planning, University of Stellenbosch,Water projects, like sustainable development projects in general, often tend to become unsustainable because they are guided by top-down strategies which exclude the input, influence and ownership of projects by their beneficiaries. For attaining sustainable development, the social capital of... -
Glaring invisibility: dressing the body of the female cleaner
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Maheshvari Naidu --- School of Anthropology, Gender and Historical Studies, University of KwaZulu Natal,The paper explores how the uniform of a group of female cleaners appears to be more than an abstract object framed by the practical exegetics of work. The uniform is seen as acting as a material exercise of discretionary and... -
Bafokeng, Inc.—Power of the nation/corporation amalgam
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Inge Kriel --- Department of Anthropology and Archaeology,The concept of ‘Ethnicity, Inc.’ so thoroughly conjoins the ethnic nation with the ethnic corporation that it becomes increasingly difficult to think of one without the other. This article aims to deconstruct this relationship by demonstrating how the ambiguity between... -
Introduction to Anthropology Southern Africa special issue on ‘Engaging Difference: Perspectives on belonging and exclusion in contemporary southern and East Africa’
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Heike Becker --- Department of Anthropology and Sociology,This special issue of Anthropology Southern Africa is the result of troubling questions of how to engage difference and belonging. Anthropologists in South Africa, like their colleagues elsewhere, today face the return of difference thinking. The articles in this special... -
Men, women, temporality and critical ethnography in Africa—the imperative for a transdisciplinary conversation
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Elaine Salo --- Institute for Women's and Gender Studies, University of Pretoria,This article addresses concerns of African-based scholars about how we can adequately represent the social heterogeneity and the rich diversity of African subjects. I argue that by prioritising Pan-Africanist solidarity, and in our search for African authenticity, we often represent... -
Beastly whiteness: Animal kinds and the social imagination in South Africa
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Hylton White --- Dept of Social Anthropology,How do animals enter into the constitution of differences in human affairs? I address the question by showing how, in Zulu households, animals themselves are marked as beings with ethnic properties. If animals can be understood as being ethnically distinguishable,... -
The variation of microfibril angle in South African grown Pinus patula and its influence on the stiffness of structural lumber
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: C Brand Wessels --- Department of Forest and Wood Science, South Africa Francois S Malan --- Postgraduate Forest Programme, South Africa Martin Kidd --- Centre for Statistical Consultation, South Africa Tim Rypstra --- Department of Forest and Wood Science, South AfricaReduction in the rotation ages of softwood saw-log plantations in South Africa is causing increased proportions of low stiffness sawn lumber at final harvest. It has been shown for some species that the microfibril angle (MFA) of the S2 layer... -
Lipid emulsion therapy: non-nutritive uses of lipid emulsions in anaesthesia and intensive care
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: M Buys --- Department of Anaesthesiology and Critical Care, South Africa PA Scheepers --- Department of Anaesthesiology and Critical Care, South Africa AI Levin --- Department of Anaesthesiology and Critical Care, South AfricaLipid emulsions were introduced into clinical practice more than five decades ago as a calorically dense, non-glucose-based energy source for parenteral nutrition. Recently, intravenous lipid emulsions have been used as rescue for systemic local anaesthetic toxicity. However, the non-nutritive, therapeutic... -
Kelp gulls prey on the eyes of juvenile Cape fur seals in Namibia
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: AJ Gallagher --- Leonard and Jayne Abess Center for Ecosystem Science and Policy, USA ER Staaterman --- Rosenstiel School of Marine and Atmospheric Sciences, USA N Dreyer --- Sandwich Harbour 4×4, NamibiaThe kelp gull Larus dominicanus is an abundant and highly successful avian predator and scavenger that breeds along the coastline in the Southern Hemisphere, ranging from Antarctica to the tropics. On account of its dietary breadth, wide-ranging foraging strategies, and... -
HER-2 positive breast cancer and trastuzumab: lessons learnt by heart
Item type: Journal Article • Journal: Southern African Journal of Gynaecological Oncology • Authors: K Outhoff --- Department of Pharmacology, South AfricaWomen treated with trastuzumab have an increased risk for developing cardiac problems, particularly if they receive prior or concurrent anthracyclines. Left ventricular dysfunction associated with trastuzumab treatment may progress to severe New York Heart Association (NYHA) class III/IV heart failure... -
Retrospective analysis of patients with cancer of the cervix attending a radiotherapy outpatient department: experience from a university-based hospital in eastern Uttar Pradesh, India
Item type: Journal Article • Journal: Southern African Journal of Gynaecological Oncology • Authors: M Nandi --- Department of Radiation Oncology, India A Mandal --- Department of Radiotherapy and Radiation Medicine, Institute of Medical Sciences, India AK Asthana --- Radiotherapy and Radiation Medicine, Institute of Medical Sciences, IndiaObjective: A retrospective analysis of all patients with cancer of the cervix attending a radiotherapy outpatients department in a single unit from January 2005 to December 2006 was carried out to study their epidemiology, stage and status of presentation, compliance... -
A pilot study on the use of amikacin in neonates: Who should be monitored for ototoxicity?
Item type: Journal Article • Journal: Southern African Journal of Infectious Diseases • Authors: Deirdré Engler --- Department of Pharmacy, South Africa Natalie Schellack --- Department of Pharmacy, South Africa Alida Naude --- Discipline of Speech- Language Pathology and Audiology, South Africa Andries Gous --- Department of Pharmacy, South AfricaBackground: Aminoglycosides (AGs) cause irreversible hearing loss. The toxic effects of AGs are dose dependent and correlate with increasing drug serum concentrations. -
Micro-scale heterogeneity of spiders (Arachnida:Araneae) in the Soutpansberg, South Africa: a comparative survey and inventory in representative habitats
Item type: Journal Article • Journal: African Zoology • Authors: S.H. Foord --- Department of Biological Sciences, South Africa M.M. Mafadza --- Department of Biological Sciences, South Africa A.S. Dippenaar-Schoeman --- Biosystematics Division, University of Pretoria, South Africa B.J. Van Rensburg --- Centre for Invasion Biology and Department of Zoology and Entomology, South AfricaCoarse-scale studies that focus on species distributions and richness neglect heterogeneity that may be present at finer scales. Studies of arthropod assemblage structure at fine (1 × 1 km) scales are rare, but important, because these are the spatial levels... -
Practices employed by audiologists in the management of adult patients with multidrug-resistant tuberculosis in South Africa
Item type: Journal Article • Journal: South African Family Practice • Authors: M Govender --- Audiology, Department of Health, Republic of South Africa J Paken --- Discipline of Audiology, Republic of South AfricaIntroduction: Aminoglycosides used for treating multidrug-resistant (MDR) tuberculosis are ototoxic, leading to a need for audiological monitoring. While audiologists monitor ototoxicity, currently there are no guidelines on monitoring in the South African context. Therefore, the findings of this study might... -
Ethics and extinction: Micro versus macro appropriate technology
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: C. Verharen --- Department of Philosophy, F. Bugarin --- African Studies Department, D. Schwartzman --- Department of Biology (ret.), J. Tharakan --- Department of Chemical Engineering, B. Gutema --- Department of Philosophy, Ethiopia J. Fortunak --- Department of Chemistry & Pharmaceutical Sciences, G. Middendorf --- Department of Biology, USAEthical theory and technology practice raise two primary questions. First, what are the ethical principles driving sustainable appropriate technology? Second, what are the viable applications of those principles with respect to alternative appropriate technologies? The hypothesis of this study is... -
Measuring and reporting on energy poverty: insights from West African countries
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Emmanuel W. Ramde --- Department of Mechanical Engineering, Ghana Patrick Nussbaumer --- United Nations Industrial Development Organization (UNIDO), Austria Morgan Bazilian --- United Nations Industrial Development Organization (UNIDO), AustriaA reliable and comprehensive energy information base is required to set targets, design policies and programmes, as well as to enable citizens to make informed choices. Adequate national capacity to track progress towards universal modern energy access represents an especially... -
The deterioration of production schedules during unforeseen disruptions
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: J.M. Ikome --- Department of Industrial Engineering, South Africa M.G. Kanakana --- Department of Industrial Engineering, South Africa S.P. Ayodeji --- Department of Industrial Engineering, South AfricaIn most real-world environments, production scheduling is an ongoing process where the presence of a variety of unforeseen disruptions is usually inevitable, and continually forces reconsideration and revision of pre-established schedules. Many of the approaches developed to solve the problem... -
Strengthening Capacity for Agribusiness Development and Management in Sub-Saharan Africa
Item type: Journal Article • Journal: Africa Journal of Management • Authors: Suresh Chandra Babu --- Capacity Strengthening Program, USA Rupak Manvatkar --- World Food Programme, Italy Shashidhara Kolavalli --- Ghana Strategy Support Program, GhanaIn sub-Saharan Africa, agribusiness has a major role to play in the transformation of the agricultural sector. The demand for high-value food products is increasing, creating an opportunity for the production and export of these goods. To capture the benefits... -
Design basics of a small hydro turbine plant for capacity building in sub-Saharan Africa
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Williams S. Ebhota --- Department of Mechanical Engineering, South Africa Freddie Inambao --- Department of Mechanical Engineering, South AfricaThis paper presents a simplified design considerations for a propeller hydro-turbine, including tabulated relevant mathematical expressions of operating parameters. In the design calculation, a 2.5 m head and 0.183 m3/s flow rate were used as river data for power of... -
Measurement invariance across gender and ethnicity on the Emotional Quotient Inventory 2.0
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Casper J. J. Van Zyl --- Department of Psychology, South AfricaThis study investigated the measurement invariance of the Emotional Quotient Inventory 2.0 across gender and ethnic groups in South Africa. The sample consisted of 1 144 working adults (female = 49.8%. black = 36.2%, white = 29.8%; other = 34%;... -
Design of a hand water pump using a quick-return crank mechanism
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: C. A. Okoronkwo --- Department of Mechanical Engineering, Nigeria B. O. Ezurike --- Department of Mechanical Engineering, Nigeria R. Uche --- Department of Mechanical Engineering, Nigeria J. O. Igbokwe --- Department of Mechanical Engineering, Nigeria O. N. Oguoma --- Department of Mechanical Engineering, NigeriaThe detailed design procedure for a quick-return mechanism hand water pump is presented. The system designed is basically a modification to reciprocating lift pumps also known as India mark III. The modified pump is operated by the up and down... -
Consent by children: considerations when assessing maturity and mental capacity
Item type: Journal Article • Journal: South African Family Practice • Authors: Y Havenga --- Adelaide Tambo School of Nursing Science, South Africa MA Temane --- Department of Nursing Science, South AfricaHealth care providers are required to know and apply legal, ethical and professional requirements when obtaining consent from children. Central to obtaining consent from children is the ability to assess and arrive at a clinical judgement about the child’s maturity... -
Laboratory-scale evaluation of the potential of chemical containment for farmed abalone larval escapees
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: A Roux --- Department of Genetics, South Africa H Lambrechts --- Department of Animal Sciences, South Africa R Roodt-Wilding --- Department of Genetics, South AfricaThe sensitivity of abalone Haliotis midae larvae to low levels of toxicants was used to conduct a laboratoryscale experiment to determine the possibility of using chemical containment to prevent the escape of larvae from land-based culture systems, thereby reducing the... -
“Original Venda hustler”: symbols, generational difference and the construction of ethnicity in post-apartheid South Africa
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Fraser G. McNeill --- Department of Anthropology and Archaeology, South AfricaThis paper provides an ethnographic analysis of contemporary articulations of “Vendaness” in Pretoria, South Africa. Current ethnic identifications articulate recent fluctuations in political, economic and social dynamics. Two case studies are offered as evidence. I evoke Turner’s symbolism to demonstrate... -
Sensitivity of selected dry bean (Phaseolus vulgaris L.) cultivars to mesotrione in a simulated carry-over trial
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: James Allemann --- Department of Soil, Crop and Climate Sciences, South Africa Johnny M Molomo --- Department of Soil, Crop and Climate Sciences, South AfricaMesotrione is used to control annual broadleaf weeds and grasses in maize, with waiting periods up to 24 months recommended prior to planting sensitive crops. The objectives of this study were to determine if selected dry bean cultivars exhibited differences... -
Water cytotoxicity and dioxins bioaccumulation in an Egyptian delta wetland ecosystem
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: MM El-Shazly --- Department of Entomology, Faculty of Science, Egypt El Elzayat --- Department of Zoology, Faculty of Science, Egypt WA Omar --- Department of Zoology, Faculty of Science, Egypt IIA El-Sebeay --- Plant Protection Research Institute, Agricultural Research Center, Egypt YA Edmardash --- Department of Entomology, Faculty of Science, Egypt MM Soliman --- Department of Entomology, Faculty of Science, Egypt KM Abdel Rahman --- Department of Entomology, Faculty of Science, Egypt MS Ibrahim --- Department of Geography, Faculty of Arts, EgyptManzala Lake, as one of the main Egyptian wetland ecosystems, is facing risks of pollution. An in vitro cytotoxicity test using a mammalian cell line was employed to determine the toxicity of multiple pollutants in the water and Tilapia zillii... -
Entrepreneurial Intentions: A Cultural Perspective
Item type: Journal Article • Journal: Africa Journal of Management • Authors: Ian K. Alexander --- Department of Food and Resource Economics, Denmark Benson Honig --- McMaster University, DeGroote School of Business, CanadaThe theory of planned behaviour is widely used to measure entrepreneurial intentions. Thus, we investigate the possible moderating role of indigenous ethnic culture on the attitude-intention, subjective norm-intention and perceived behavioural control-intention relationships. In support of the theory of planned... -
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 -
South African indigenous fruits – Underutilized resource for boosting daily antioxidant intake among local indigent populations?
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Daniela Amalia Kucich --- Department of Chemistry, South Africa Merrill Margaret Wicht --- Department of Chemistry, South AfricaConsuming more than seven portions of fruit and vegetables daily substantially lowers the risk of mortality from any cause, yet many South Africans living below the poverty line have a very low or even zero intake of fruit and vegetables... -
The sensitivity of Afromontane tarns in the Maloti-Drakensberg region of South Africa and Lesotho to acidic deposition
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: JA Dunnink --- Centre in Water Research and Development (CiWaRD) and Department of Geography, South Africa CJ Curtis --- Centre in Water Research and Development (CiWaRD) and Department of Geography, South Africa JP Beukes --- Unit for Environmental Sciences and Management, South Africa PG van Zyl --- Unit for Environmental Sciences and Management, South Africa J Swartz --- Unit for Environmental Sciences and Management, South AfricaDespite their remoteness from sources of atmospheric pollutant emissions, the Afromontane tarns in the Maloti-Drakensberg region are perfect candidates to study the negative effects of acidifying atmospheric pollution, because mountain lakes are widely recognised as sentinel ecosystems, unimpacted by direct... -
Exploring the impact of the constructs of the three-domain approach on private social and commercial hospitality provision
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Barry O'Mahony --- Department of Marketing, Tourism and Social Impact, AustraliaThis article explores the constructs of private social and commercial hospitality in a panoramic examination of the impact and potential future development of the three-domain approach. Focused primarily (but not exclusively) on the books In Search of Hospitality: theoretical perspectives... -
Cortisol stress response and histopathological alteration index in Clarias gariepinus exposed to sublethal concentrations of Qua Iboe crude oil and rig wash
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: JK Saliu --- Ecotoxicology Unit, Department of Zoology, Nigeria SA Oluberu --- Ecotoxicology Unit, Department of Zoology, Nigeria II Akpoke --- Ecotoxicology Unit, Department of Zoology, Nigeria UD Ukwa --- Ecotoxicology Unit, Department of Zoology, NigeriaThe histological effect on and stress response of post juvenile Clarias gariepinus exposed to Qua Iboe crude oil and rig wash were investigated. Fish weighing 60–90 g and measuring 16–18 cm were exposed for 7–28 days to 8.00 ml−1 Qua... -
Domestic Resource Mobilization in Africa: State, Capacity Imperatives and Policy Actions
Item type: Journal Article • Journal: Africa Journal of Management • Authors: Emmanuel Nnadozie --- The African Capacity Building Foundation, Zimbabwe Thomas Munthali --- The African Capacity Building Foundation, Zimbabwe Robert Nantchouang --- The African Capacity Building Foundation, Zimbabwe Barassou Diawara --- The African Capacity Building Foundation, ZimbabweIn Agenda 2063 and Agenda 2030, Africa has its major development aspirations defined in the broader global and continental economic development context. Implementation of the two Agendas calls for substantial financial resources at a time when the global development finance... -
Prevalence and factors associated with tobacco use among adults attending selected healthcare facilities in Buffalo City Metropolitan Municipality, South Africa
Item type: Journal Article • Journal: South African Family Practice • Authors: EO Owolabi --- Faculty of Health Sciences, Department of Nursing Science, South Africa DT Goon --- Faculty of Health Sciences, Department of Nursing Science, South Africa OV Adeniyi --- Faculty of Health Sciences, Department of Family Medicine, South Africa E Seekoe --- Faculty of Health Sciences, Department of Nursing Science, South Africa AO Adedokun --- Faculty of Health Sciences, Department of Nursing Science, South AfricaAim: Tobacco use increases the risk of cardiovascular disease, premature death and certain cancers. This study investigated the prevalence and determinants of tobacco use among adults in Buffalo City Metropolitan Municipality (BCMM), South Africa. -
Variation in selected solid wood properties of young Pinus patula from diverse sites in the Mpumalanga escarpment area in South Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Barry G Muller --- Nelson Mandela Metropolitan University, South Africa Josua H Louw --- Nelson Mandela Metropolitan University, South Africa Francois S Malan --- Research Centre, South Africa (retired)Regression analyses identified ‘Growth Days’ (an index expressing site moisture availability) as the only site variable contributing significantly to the prediction to wood density (R2 = 0.57), whereas the model predicting grain angle included only ‘Altitude’ (R2 = 0.60). These... -
Growth and dynamic modulus of elasticity of Pinus patula × Pinus tecunumanii hybrids in Mpumalanga, South Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Phillip C Hongwane --- Komatiland Forests Research, South Africa R Glen Mitchell --- Forest Solutions Malaysia, Malaysia Arnulf Kanzler --- Sappi Forest Research, South Africa Steven D Verryn --- Creation Breeding Innovations, South Africa Paxie WC Chirwa --- Department of Plant and Soil Sciences, South AfricaField establishment of South Africa’s most important commercial pine species, Pinus patula, is severely hampered by the pitch canker fungus, Fusarium circinatum. Importantly, hybrids between P. patula and other pine species tolerant to the pitch canker fungus, such as P... -
Focusing on monofilament nets while overlooking the priorities of artisanal fisheries governance in Senegal
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: D Thiao --- Centre de Recherches Océanographiques de Dakar-Thiaroye (CRODT), Senegal A Mbaye --- Centre de Recherches Océanographiques de Dakar-Thiaroye (CRODT), Senegal M Dème --- Centre de Recherches Océanographiques de Dakar-Thiaroye (CRODT), Senegal HD Diadhiou --- Centre de Recherches Océanographiques de Dakar-Thiaroye (CRODT), SenegalDespite its legal prohibition since 1998, the nylon monofilament net is still widely used in Senegalese artisanal fisheries. To achieve a complete ban on monofilament use, it is necessary to understand the main arguments for its continued use and what... -
Farm worker identities contested and reimagined: gender, race/ethnicity and nationality in the post-strike moment
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Åsa Eriksson --- Department of Ethnology, History of Religions and Gender Studies, SwedenIn 2012/2013, widespread rural unrest — commonly referred to as the “farm worker strike” — broke out in the Western Cape, South Africa. This exposed not only poor salaries and working conditions, but also the disparity between representations of farm... -
The potential of omics technologies as tools to understand the environmental factors influencing okra (Abelmoschus esculentus) growth and adaptation
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Matsobane T Mathiba --- Department of Agriculture and Animal Health, South Africa Gangireddygari VS Reddy --- Department of Agriculture and Animal Health, South Africa Khayalethu Ntushelo --- Department of Agriculture and Animal Health, South Africa Sheku A Kanu --- Department of Agriculture and Animal Health, South AfricaLeading crops such as cotton, maize, rice and wheat were the first to be studied using omics technologies (genomics, transcriptomics, proteomics and metabolomics). Those crops that are considered less significant, such as okra (Abelmoschus esculentus (L.) Moench), are yet to... -
Single-tree water use and water-use efficiencies of selected indigenous and introduced species in the Southern Cape region of South Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Tatenda Mapeto --- School of Natural Resources Management, South Africa Mark Gush --- CSIR, Natural Resources and Environment, South Africa Josua Louw --- School of Natural Resources Management, South AfricaIn South Africa, the development of a plantation tree industry using fast-growing introduced species was accelerated by the limited extent of indigenous forests. However, concerns about the impacts of plantations on the country’s limited water resources has initiated forest hydrology... -
Feasibility of electricity generation using WECS in the selected locations of Tigray region (Ethiopia)
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Shiva Prashanth Kumar Kodicherla --- Department of Civil Engineering, College of Engineering & Technology, Ethiopia Satyanarayana Gaddada --- Department of Electrical and Computer Engineering, College of Engineering & Technology, EthiopiaThis paper presents the feasibility of electricity generation using WECS in the selected locations of Tigray region in Ethiopia. Weibull parameters were obtained using the energy pattern factor method (EPFM). A linear agreement was observed between mean wind speed and... -
Role of reciprocity and innovativeness on performance in a developing context: Empirical evidence from Africa
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Shogo Mlozi --- Department of Tourism, Tanzania Ossi Pesämaa --- Accounting and Control, Sweden Sarah Jack --- Department of Entrepreneurship, Strategy and Innovation, UKGenerally, investors tend to invest when likelihood of success is high. Many investors consider Africa as one market and neglect individual differences among African countries. Africa is mostly considered a high-risk market and conceptually innovativeness involves uncertainty, which precedes risk... -
Adult binge drinking: rate, frequency and intensity in Buffalo City Metropolitan Municipality, South Africa
Item type: Journal Article • Journal: South African Family Practice • Authors: Eyitayo Omolara Owolabi --- Department of Nursing Science, South Africa Daniel Ter Goon --- Department of Nursing Science, South Africa Oladele Vincent Adeniyi --- Department of Family Medicine, South Africa Eunice Seekoe --- Department of Nursing Science, South AfricaBackground: Binge drinking (BD) is a significant risk factor for several acute and chronic illnesses, including injuries. This study examines the rate, frequency and intensity of BD in Buffalo City Metropolitan Municipality (BCMM), South Africa. -
Wounded citizenship: the post-colonial city and poor whites
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Octavia Sibanda --- Fort Hare Institute of Social and Economic Research, University of Fort Hare, South AfricaThis paper focuses on wounds inflicted on poor whites in South Africa by the post-colonial city emanating from a changing socio-political and economic landscape. Contrary to the general assumption that the modern city project “historically embraced whites and continues to... -
Sawn-timber and kraft pulp properties of Pinus elliottii × Pinus caribaea var. hondurensis and Pinus patula × Pinus tecunumanii hybrids and their parental species
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: André Nel --- Shaw Research Centre, Sappi Forests Research, South Africa Francois S Malan --- Retired, South Africa Ron Braunstein --- Sappi Technology Centre, South Africa C Brand Wessels --- Department of Forest and Wood Science, South Africa Arnulf Kanzler --- Shaw Research Centre, Sappi Forests Research, South AfricaA study was undertaken to evaluate the quality of the timber produced by Pinus elliottii × Pinus caribaea var. hondurensis (PECH) and the Pinus patula × Pinus tecunumanii low elevation (PPTL) and high elevation (PPTH) hybrids and their parent species... -
War Memories and the Refugees’ Representation in Marie-Thérèse Toyi’s Weep not, Refugee
Item type: Journal Article • Journal: Eastern African Literary and Cultural Studies • Authors: Audace Mbonyingingo --- English Department, BurundiDuring the late twentieth century, numerous Great Lakes countries witnessed and experienced massive killings, disappearances, torture and tremendous suffering. Drawing particularly from the tenets of Cathy Caruth (1995, 153), which stipulate that ‘previously forgotten memory traces return and are reworked... -
The continuing lack of ornithological research capacity in almost all of West Africa
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Will Cresswell --- Centre for Biological Diversity, University of St Andrews, UKWest Africa has high bird diversity and is a crucial non-breeding area for over one-third of European breeding species, yet local capacity for ornithological research and so targeted bird conservation is perceived to be limited. I reviewed all the published... -
Trends and themes in African ornithology
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Colin M Beale --- Department of Biology, UKOrnithology in Africa has a long history. I review trends in the ornithological literature since 1990 within the context of the 14th Pan-African Ornithological Congress. Using full text searches of papers on PubMed® and abstracts from main ornithological journals I... -
Determinants of market participation and marketing channels in smallholder groundnut farming: A case of Mudzi district, Zimbabwe
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Nelson Mango --- International Centre for Tropical Agriculture, Zimbabwe Clifton Makate --- International Centre for Tropical Agriculture, Zimbabwe Nicola Francesconi --- Technical Center for Agricultural and Rural Cooperation (CTA), The Netherlands Matthias Jager --- International Centre for Tropical Agriculture (CIAT), Colombia Mark Lundy --- International Centre for Tropical Agriculture (CIAT), ColombiaThis paper investigates the factors that are associated with market participation and choice of marketing channels by smallholder groundnut farmers in a semi-arid district of Zimbabwe. It contributes to the existing body of knowledge on groundnuts, especially the marketing aspect... -
Rapping with a Forked Tongue, Code-switching and the Tribalized Kenya of the end of the Twentieth Century in ‘Otongolo Tyme’ by Poxi Presha
Item type: Journal Article • Journal: Eastern African Literary and Cultural Studies • Authors: Tom Michael Mboya --- Department of Literature, Theatre and Film Studies, KenyaIn this article politics is argued to be an important driver of the practice of codeswitching in the kinds of texts — like popular music texts — that are produced for extensive circulation within the African post-colony. The argument is... -
Popular Art and the Reconfiguration of Police Atrocities in Kenya
Item type: Journal Article • Journal: Eastern African Literary and Cultural Studies • Authors: Charles Kebaya --- Department of Literature, Creative and Performing Arts, KenyaThe government of Kenya has the singular obligation to protect, respect and ensure that its citizens enjoy the right to life1, prohibit all forms of torture2 and protect them from arbitrary arrest and unlawful detention3 as enshrined in the constitution... -
Index selection for growth and construction wood properties in Pinus elliottii open-pollinated families in southern China
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Shuainan Zhang --- Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Zhejiang Provincial Key Laboratory of Tree Breeding, China Jingmin Jiang --- Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Zhejiang Provincial Key Laboratory of Tree Breeding, China Qifu Luan --- Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Zhejiang Provincial Key Laboratory of Tree Breeding, ChinaThe initial introduction of Pinus elliottii (PEE) to China occurred in the 1930s, and the planting of this conifer species has now attained close to 3 million ha in the subtropical zone of southern China. A large-scale genetic improvement program... -
Unique ‘spring-loaded’ gnathopod in the recently re-discovered and highly range-restricted estuarine amphipod Quadrivisio aviceps
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: C Griffiths --- Department of Biological Sciences and the Marine Research Institute, South Africa J Landschoff --- Department of Biological Sciences and the Marine Research Institute, South AfricaThe amphipod Quadrivisio aviceps (KH Barnard 1940), previously known from just three records collected at two small estuaries in the Western Cape, South Africa, was re-discovered at one of the original collection sites (the Palmiet River lagoon). The population at... -
Seasonal changes in pasture biomass and grazing behaviour of cattle in the Guinea Savanna agroecological zone of Ghana
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Maxwell Akapali --- Department of Animal Science, Ghana Terry Ansah --- Department of Animal Science, Ghana Ibn Iddriss Abdul-Rahman --- Department of Animal Science, Ghana Benjamin Alenyorege --- Department of Animal Science, Ghana Bernard N Baatuuwie --- Department of Forestry and Forest Resources Management, GhanaSpatial and temporal availability of pasture vegetation and cattle grazing behaviour in three seasons (intermediate season [IM], peak season [PS] and dry season [DS]) in the Guinea Savanna agroecological zone of Ghana was examined. The frequency of occurrence of three... -
Ovarian germ cell tumour and bleomycin-induced lung injury
Item type: Journal Article • Journal: Southern African Journal of Gynaecological Oncology • Authors: P Barnardt --- Department of Medical Imaging and Clinical Oncology (MICO), South Africa S Griffith-Richards --- Department of Medical Imaging and Clinical Oncology (MICO), South AfricaBleomycin, an antibiotic agent with antitumour activity, is an important drug in the management of many oncological malignancies such as lymphoma and germ cell tumours. These tumours are potentially curable and mostly affect young people. The potential side effects and... -
Offender interviewing in custodial settings: Understanding validity, value and veracity issues
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Friedo JW Herbig --- Department of Criminology and Security Science, South Africa Cecili Doorewaard --- Department of Criminology and Security Science, South AfricaThe purpose of this scoping literature review was to identify trends regarding validity, value and veracity issues when conducting (qualitative) interviews with offenders in custodial settings. We selected for review works from electronic databases in SAGE, Springer, and Taylor and... -
Feasibility economic analysis for electricity generation in internal combustion engine sets using landfill gas in Lagos State
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: A. O. Adepoju --- Project Management Department, Nigeria Y. O. Akinwale --- Department of Economics, Saudi Arabia I. O. Ogundari --- African Institute for Science Policy and Innovation, Obafemi Awolowo University, NigeriaThe main objective of this paper is to analyze the economic feasibility landfill gas for electricity generation in Lagos State. In this paper, methane emissions are estimated by applying the First Order Decay model to landfills in Lagos over the... -
Factors influencing the production of structural plywood in Tasmania, Australia from Eucalyptus nitens rotary peeled veneer
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: David Blackburn --- Centre for Sustainable Architecture with Wood, School of Architecture and Design, Australia Mario Vega --- Centre for Sustainable Architecture with Wood, School of Architecture and Design, Australia Robert Yong --- Ta Ann Tasmania Pty Ltd, Australia Donovan Britton --- Ta Ann Tasmania Pty Ltd, Australia Gregory Nolan --- Centre for Sustainable Architecture with Wood, School of Architecture and Design, AustraliaHarvested logs supplied from five fibre-managed Eucalyptus nitens plantation coupes with different growing environments were assessed for quality and stiffness. Billets extracted from the logs were rotary peeled for veneer. When averaged across the five coupes, 30% of veneer recovered... -
Corruption, transaction costs, and innovation in Africa
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Laura Barasa --- School of Economics, KenyaThis paper examines the relationship between corruption, transaction costs as measured by asset specificity, and innovation in Africa. We hypothesize that in the context of developing countries in Africa, corruption is positively associated with innovation. In addition, we hypothesize that... -
Yield of hydroponically grown tomato (Solanum lycopersicon) as affected by different particle sizes of sawdust
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Maboloke A Maatjie --- Department of Agriculture and Animal Health, South Africa Martin M Maboko --- Agricultural Research Council–Vegetable and Ornamental Plants, South Africa David M Modise --- Department of Agriculture and Animal Health, South AfricaThe particle size of a growing medium is one of the most important aspects in growing crops hydroponically. A study was conducted to determine the effect of particle size of sawdust as a substrate on tomato yield, in a non-temperature-controlled... -
Understanding memorable tourism experiences: A case study
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Miranda Cornelisse --- Tourism, The NetherlandsThe desire for new experiences that are truly authentic has become an important mainstream in the tourism industry. The main goal of this empirical case study was twofold: 1) To determine which concept of authenticity in tourism literature is most... -
Lesion size induced by Chrysoporthe fungal pathogens varies between Eucalyptus species and geographic locations in Zambia
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Donald Chungu --- Department of Plant and Environmental Sciences, School of Natural Resources, Zambia Jedrick Siyingwa --- Department of Plant and Environmental Sciences, School of Natural Resources, Zambia Phillimon Ng’andwe --- Department of Biomaterial Science and Technology, School of Natural Resources, Zambia Bertha Chitala Chungu --- School of Business, ZambiaChrysoporthe canker disease is one of the serious threats facing planted Eucalyptus in southern Africa. In order to manage this disease, planting of less susceptible species of Eucalyptus has been promoted in many countries but it is not clear which... -
Climate change and adaptation-induced engineering design and innovations in water development projects in Africa
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Berhanu F. Alemaw --- Department of Geology, Botswana Nako M. Sebusang --- Department of Civil Engineering, BotswanaIn this paper, a framework for best practice for incorporating climate change and adaption in Africa is presented from mainly the water resources design and management perspectives to chart systematically ways of incorporating climate change in engineering design of water... -
The economic cost of unreliable grid power in Nigeria
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Samuel Olowosejeje --- School of Engineering, Nigeria Paul Leahy --- School of Engineering, Republic of Ireland Alan Morrison --- Department of Electrical and Electronic Engineering, School of Engineering, Republic of IrelandThe ever-increasing demand for electrical power in Nigeria, coupled with a limited supply, have restricted the nation's socioeconomic development. The country’s policymakers, aware of this, have formulated and enacted energy development policies in recent years targeted at diversifying the current... -
Investigating the informal mode of financing utilized for construction financing in Somalia: Some evidence
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Mohamed Ibrahim Nor --- Faculty of Management Sciences, Somalia Tajul Ariffin Masron --- School of Management, MalaysiaIntermediation is the main objective of any financial industry. While financing services are provided by formal financial institutions in the advanced world, financing services are provided differently in emerging economies. Hence, various alternative modes of financing are used in these... -
Impact of shorebird predation on intertidal macroinvertebrates in a key North African Atlantic wintering site: an experimental approach
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: L Joulami --- Faculty of Sciences Ben M’sik, Morocco R El Hamoumi --- Faculty of Sciences Ben M’sik, Morocco Z Daief --- Faculty of Sciences Ain Chock, Morocco H Bazairi --- Faculty of Sciences, Morocco RJ Lopes --- Centro de Investigação em Biodiversidade e Recursos Genéticos (CIBIO), InBio Laboratório Associado, PortugalShorebirds, as migratory aquatic birds and top predators in intertidal ecosystems, can be affected by global environmental changes and escalations in local impacts on coastal lagoons and estuarine trophic networks. Many shorebirds winter in North African Atlantic coastal sites, most... -
Nevirapine in African surface waters induces liver histopathology in Oreochromis mossambicus: A laboratory exposure study
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: UMC Nibamureke --- Department of Zoology, South Africa IEJ Barnhoorn --- Department of Zoology, South Africa GM Wagenaar --- Department of Zoology, South AfricaNevirapine (NVP) is one of the HIV antiretrovirals detected recurrently in African surface waters. Liver side effects in humans were reported. Because the effects on fish are unknown, this study investigated the potential effects of NVP on selected biometric indices... -
Crayfish, catfish and snails: the perils of uncontrolled biological control
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: BE Marshall --- Great North Road, New ZealandA recent proposal that the Australian redclaw crayfish Cherax quadricarinatus and hybrid catfish could potentially control the snail hosts of schistosomiasis has been criticised on the grounds that crayfish pose a severe threat to aquatic ecosystems into which it might... -
Temporal analysis of electricity consumption for prepaid metered low- and high-income households in Soweto, South Africa
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Njabulo Kambule --- Department of Geography, Environmental management and Energy Studies, South Africa Kowiyou Yessoufou --- Department of Geography, Environmental management and Energy Studies, South Africa Nnamdi Nwulu --- Department of Electrical & Electronic Engineering Science, South Africa Charles Mbohwa --- School of Mechanical and Industrial Engineering, South AfricaThis study explores the temporal trend in electricity consumption since the introduction of prepaid metres in low-income households of Soweto and compares the findings with high-income households. Monthly electricity consumption data (over 96 months: 2007–2014) for 4427 households in Soweto,... -
Mathematical model showing how socioeconomic dynamics in African cities could widen or reduce inequality
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Obiora Cornelius Collins --- Institute of Systems Science, South Africa Thokozani Silas Simelane --- Institute of Systems Science, South Africa Kevin Jan Duffy --- Institute of Systems Science, South AfricaCities are important forces of national socioeconomic development. Individuals in cities often belong to different socioeconomic statuses depending on their levels of income, education and nature of occupation. Income, employment and education opportunities are among the main attractions of most... -
Student’s perception of engineering design for competitiveness in Africa: The case of Tanzania, East Africa
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Lawrence Joseph Kerefu --- Department of Mechanical Engineering, Tanzania Juliana Zawadi Machuve --- Department of Mechanical and Industrial Engineering, TanzaniaEngineering is vital for addressing basic human needs, improving the quality of life and creating opportunities for sustainable prosperity at local, regional, national and global levels. However, Africa faces a shortage of engineers arising from the declining interest and enrolment... -
Fieldwork as performance: being ethnographic in film-making
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Julia Koch --- Institute of Social and Cultural Anthropology, GermanyThis paper examines the use of the visual medium of collaborative ethnographic film-making as a fieldwork method in anthropology. Focusing on practices of filming, I adapt Richard Schechner’s ideas of performance processes and relational quadrilogues to move beyond the dichotomy... -
Using acoustic wave velocity to select fibre-managed plantation Eucalyptus nitens logs for laminated veneer lumber products
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: David Blackburn --- Centre for Sustainable Architecture with Wood (CSAW), School of Architecture and Design, Australia Mario Vega --- Centre for Sustainable Architecture with Wood (CSAW), School of Architecture and Design, Australia Gregory Nolan --- Centre for Sustainable Architecture with Wood (CSAW), School of Architecture and Design, AustraliaThe aims and objectives of this study were to investigate the potential to predict laminated veneer lumber (LVL) stiffness from wood properties measured on trees and logs, and determine variation in log, wood and veneer properties as a function of... -
Grandidierella lignorum (Amphipoda: Aoridae) can be used for assessing the toxicity of sediment with varying grain sizes and low organic content
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: NF Masikane --- Department of Zoology, South Africa BK Newman --- Coastal Systems Research Group, Natural Resources and the Environment, South Africa UM Scharler --- School of Life Sciences, South AfricaSediment grain size and organic matter influences the distribution of macrozoobenthic fauna. These parameters also influence bioavailability and toxicity of contaminants in aquatic systems, because sediment is the sink and source for most contaminants. These sediment parameters therefore potentially confound... -
Mediated mutual reciprocity in the process of African children’s social ontogenesis
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Therese Mungah Shalo Tchombe --- Center for Research in Child and Family Development and Education (CRCFDE), CameroonThe paper highlights Nsamenang’s social ontogenesis theoretical stance in explaining how participatory pedagogies in socialisation impact not only development but children’s capacity to assume responsibilities for their own development. A synoptic review is presented of widely discussed challenges faced by... -
Overcoming obstacles to a truly global psychological theory, research, and praxis in Africa
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Seth Oppong --- Department of Psychology,In African countries, psychology as it is taught, researched, and practised contributes to epistemic injustice and epistemological violence while depriving Africans of epistemic agency. This is largely because psychology has remained and continues to remain Eurocentric. However, the continual Eurocentric... -
Local food and authenticity in Greek restaurants
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Gerasimos-Panagiotis Angelopoulos --- Academy of International Hospitality Research, Stenden Hotel Management School, the Netherlands Jan Arend Schulp --- Academy of International Hospitality Research, Stenden Hotel Management School, the Netherlands Vanessa de Oliveira Menezes --- Academy of International Hospitality Research, Stenden Hotel Management School, the NetherlandsThis article aims to understand the role of local food and authenticity for restaurateurs in Athens and Patras, Greece. Nine restaurant owners were interviewed about their current dishes, menu and ingredients. The results of this qualitative research indicate that, for... -
The relevance of the content of an HIV and AIDS social intervention programme for the youth in the Northern Cape, South Africa
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: André R Le Tape --- Department of Social Work and Criminology, South Africa Lourens S Geyer --- Department of Social Work and Criminology, South Africa Charlene L Carbonatto --- Department of Social Work and Criminology, South AfricaThe numbers of people infected with HIV and living with AIDS remain high in South Africa. The youth of the Northern Cape province in South Africa are a vulnerable population in this regard. However, there seems to be a dearth... -
Effect of dietary vitamin E on biochemical, oxidative stress and immunological parameters in Nile tilapia exposed to penoxsulam
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: TM Saber --- Forensic Medicine and Toxicology Department, Egypt M ElHady --- Fish Diseases and Management Department, Egypt HA Ali --- Department of Biochemistry, EgyptThis study was performed to determine the median lethal concentration (96-h LC50) of penoxsulam (PNX) in Nile tilapia, Oreochromis niloticus, fingerlings and to investigate the protective effect of vitamin E (Vit E) against biochemical and immunological alterations induced by two... -
Foreign direct investment inflows, intellectual property rights and economic freedom: Empirical evidence from middle- and low-income countries
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Saïd Hammami --- Laboratoire d’Economie et de Gestion Industrielle LEGI, Ecole Polytechnique de Tunisie, TunisiaThis study examines the impact of intellectual property rights (IPRs) on foreign direct investment (FDI) inflows, using macro data over a panel of 39 middle- and low-income countries as classified by the World Bank. Empirical assessment was made in order... -
“Do unto others what you want … ”: Reciprocity and childcare in the Kumasi metropolis of Ghana
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Samuel Asiedu Owusu --- Directorate of Research, Innovation and Consultancy, GhanaThis exploratory study aimed to assess reciprocity qualities in childcare and likely influences on child health outcomes. Informants were 83 child caregivers from the Kumasi metropolis of Ghana. Of these, 56 individual maternal (n = 28) and non-maternal child caregivers (n = 28) completed... -
Ecological, recreational and educational potential of a small artificial wetland in an urban environment
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: PN Gitau --- School of Biological Sciences, Kenya GG Ndiritu --- School of Natural Resources and Environmental Studies, Kenya NN Gichuki --- School of Biological Sciences, KenyaPertinent questions remain on whether small, artificial wetlands, such as abandoned quarries play any ecological or socio-economic role in the environment. To increase information on roles played by small-sized artificial wetlands in the environment, an assessment study was carried out... -
Occurrence of selected pharmaceuticals in industrial wastewater, receiving waters and fish
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: SM Lan --- Ecotoxicology Unit, Department of Zoology, Nigeria NH Amaeze --- Ecotoxicology Unit, Department of Zoology, Nigeria HE Obanya --- Ecotoxicology Unit, Department of Zoology, Nigeria CU Okoroafor --- Ecotoxicology Unit, Department of Zoology, NigeriaData on pharmaceutical contamination of African waterbodies are scarce. Therefore, this research aimed to quantify the occurrence of selected pharmaceuticals in wastewater from pharmaceutical industries, receiving waters and fish. Water and fish samples were collected from waterbodies close to two... -
Preliminary mineralogical and geotechnical characteristics of Zogbodomey clays in the coastal sedimentary basin of Benin (West Africa)
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Sémondji Salvien Pyrrhus Agbon --- Département des Sciences de la Terre, Bénin Nelly Carine Kelome --- Département des Sciences de la Terre, Bénin Luc Adissin Glodji --- Département des Sciences de la Terre, BéninThe Benin coastal sedimentary basin is filled with deposits of clays of diverse nature. This study focused on the characteristics of clayey materials of Zogbodomey in sight of their valorization in the construction and ceramics sectors. The clay deposit is... -
Status and population structures of three anthelmintic tree species along climatic gradient in Benin and the implications for conservation
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Géorcelin G Alowanou --- , Bénin Thierry D Houéhanou --- , Bénin Sylvanus Mensah --- , Bénin Bénoit K Alissou --- , Bénin Carlos C Ahoyo --- , Bénin Rauldin S Akpako --- , Bénin Faroukou Wabi --- , Bénin Marcel RB Houinato --- , Bénin Sylvie M Hounzangbé-Adoté --- , BéninSmallholder farmers make intensive use of anthelmintic plant species in the traditional treatment of animal parasitic infections. As a result, populations of these plant species are exposed to increased disturbances such as plant harvesting, threatening their stability. Information on population... -
Tourism resources and carrying capacity of scenic tourism areas based on forest ecological environment
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Qiong Sun --- , China Naicong Zhang --- , China Zheng Liu --- , China Bin Liao --- , ChinaThe development of society promotes the development of forest scenic tourism areas. In order to further realise the scientific and rational development of forest scenic tourism areas, it is necessary to analyse their tourism resources and carrying capacity. This paper... -
Effect of land terracing on soil physical properties across slope positions and profile depths in medium and high altitude regions of Rwanda
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Aloys Fashaho --- , Rwanda George M Ndegwa --- , Rwanda Joyce J Lelei --- , Kenya Amos O Musandu --- , Kenya Samuel M Mwonga --- , KenyaAlthough land terracing is promoted as a management practice for effective soil conservation in hilly areas, construction of terraces causes changes in soil properties. This study evaluated the effect of land terracing on some soil physical properties across slope positions... -
High sorgoleone autotoxicity in sorghum (Sorghum bicolor (L.) Moench) varieties that produce high sorgoleone content
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: H Tibugari --- , South Africa C Chiduza --- , South Africa AB Mashingaidze --- , Zimbabwe S Mabasa --- , ZimbabweSorghum autotoxicity can inhibit germination and growth, resulting in low plant densities and reduced crop productivity. Three sorghum varieties (Dhlakama, Shirikure and Macia) were evaluated for autotoxicity in 2018 at the University of Zimbabwe. Experiments were set up for 3... -
Sustainable shellfish aquaculture in Saldanha Bay, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: A Santa Marta --- , United Kingdom JG Ferreira --- , United Kingdom GC Pitcher --- , South Africa J Lencart e Silva --- , United KingdomThe carrying capacity for bivalve shellfish culture in Saldanha Bay, South Africa, was analysed through the application of the well-tested EcoWin ecological model, in order to simulate key ecosystem variables. The model was set up using: (i) oceanographic and water-quality... -
Host selection and notes on the distribution of Chonopeltis australis Boxshall, 1976 in southern Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: LAM Neethling --- , South Africa A Avenant-Oldewage --- , South AfricaThe parasite Chonopeltis australis Boxshall, 1976 has been recorded from tributaries of the Orange-Vaal River System. It is host-specific, preferring the cyprinids Labeo capensis (Smith, 1841) and Labeo umbratus (Smith, 1841). Sampling was conducted between spring 2016 and autumn 2019... -
Anatomical, physiological and allometric contrasts of the Cerrado tree Dalbergia miscolobium in full sun and shade environments
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Ane Marcela das Chagas Mendonça --- , Brazil Jean Marcel Sousa Lira --- , Brazil Marcelo Rodrigues --- , Brazil Vanessa da Fontoura Custódio Monteiro --- , Brazil Edson Simão --- , Brazil João Paulo Rodrigues Alves Delfino Barbosa --- , BrazilThe Brazilian Cerrado is a mosaic comprised of different vegetation formations and consequently, different environmental conditions. Tree density modifies the availability of light and affects species distribution. Thus, seedlings of species with a broad distribution should show contrasting anatomical, morphological,... -
Type of diabetes mellitus and health-related quality of life in Nigeria: Ethnic and sex differences
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Onyekachi Prince David --- , Denmark Graham Edgar --- , UK Dianne Catherwood --- , UK Abigail Olubola Taiwo --- , UKThis study examined quality of life (QoL) differences among diabetic patients in Nigeria by ethnicity, sex, and type of diabetes. Out-patients (n = 486) with diabetes mellitus (Type I = 16%; female = 71%; Igbo = 25% Hausa = 22%,... -
Management research in Africa: Insights from organizational neuroscience
Item type: Journal Article • Journal: Africa Journal of Management • Authors: Constant Beugré --- , USAThe present paper discusses the application of organizational neuroscience in management research in Africa. In so doing, the paper draws from the field of neuroscience, organizational neuroscience, and cultural neuroscience to explore the extent to which topics, such as corruption,... -
Physical properties of Tectona grandis (Lamiaceae) juvenile wood thermally modified in a closed system
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Natália A Cunha --- , Brazil Tiago A Gales --- , Brazil Amanda M Nunes --- , Brazil Glaucileide Ferreira --- , Brazil Thaís M Brito --- , Brazil Adriano Ribeiro de Mendonça --- , Brazil Djeison C Batista --- , BrazilThis paper reports the first results of the effect of an industrial closed-system thermal modification process on the physical properties of fast-growth teak wood (Tectona grandis L.f.). The wood (juvenile) came from thinning a 15–18-year-old plantation located in Mato Grosso... -
The role of “food” in network formation and the social integration of undocumented Zimbabwean migrant farmworkers in the Blouberg-Molemole area of Limpopo, South Africa
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Denboy Kudejira --- , CanadaThis article examines the role of food in mediating social relations between undocumented Zimbabwean migrant farmworkers and other Zimbabweans living and working in the Blouberg and Molemole local municipalities in Limpopo province, South Africa. Based on ethnographic research, the article... -
Risk assessment of polycyclic aromatic hydrocarbons in the sediments of the Ekulu River in Enugu State in Nigeria
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Uzochukwu C Ugochukwu --- , Nigeria Onyechi H Onuora --- , Nigeria Leonard Kurumeh --- , Nigeria Uchenna I Mbakwe --- , Nigeria Obiageli J Okolo --- , Nigeria Amaka L Onuorah --- , NigeriaThe human health and ecological risks resulting from exposure to polycyclic aromatic hydrocarbons (PAHs) in the Ekulu River sediments were estimated in this study. The Ekulu River receives pollutants potentially containing polycyclic aromatic hydrocarbons (PAHs) from runoff from automotive workshops... -
Nerve conduction and its correlations with duration of diabetes mellitus and glycosylated haemoglobin in type 2 diabetes mellitus (T2DM)
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: Wissam S Hamid --- , Sudan Humeda S Ahmed --- , Sudan Mona A Osman --- , Sudan Rasha Babiker --- , Sudan -
Wind and solar power deployment in India: Economic aspects and policy implications
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Alok Das --- , India Hardik K. Jani --- , India Garlapati Nagababu --- , India Surendra Singh Kachhwaha --- , IndiaEconomic assets play a key role in the growth of renewable power projects and depend on financial scenarios and policy structures offered by government policies. The focus of the study is to assess the impact of the existing economic scenarios... -
The pricing of skewness: Evidence from the Johannesburg Stock Exchange
Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Johannes Petrus Steyn --- , South Africa Lomari Theart --- , South AfricaThe historical skewness of stock return distributions could potentially affect future stock returns. Previous studies in developed markets have shown that investors prefer shares exhibiting positively skewed or ‘lottery-like’ payoff profiles. The higher demand for these shares results in a... -
The effect of intellectual property protection on innovation: Empirical analysis of developing countries panel
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Saïd Hammami --- ,This paper aims to test the impact of intellectual property protection reforms on the dynamic of technological progress within sampled developing countries. The dependency of the Intellectual Property Rights (IPR’s) rule enforcement on the stage of economic development is broadly... -
Colletotrichum gloeosporioides s.l. causes an outbreak of anthracnose of cacao in Ghana
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: EK Asare --- , Ghana O Domfeh --- , Ghana SW Avicor --- , Ghana P Pobee --- , Ghana Y Bukari --- , Ghana I Amoako-Attah --- , GhanaOutbreak of anthracnose of cacao (Theobroma cacao L.), covering an estimated total growing area of 248.47 hectares, occurred in parts of Ghana from July to October 2019. Disease samples were collected from the outbreak areas to isolate and identify the... -
Loneliness and psychological well-being among the elderly in Buffalo City, South Africa
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Anathi Ntozini --- , South Africa Ali Arazeem Abdullahi --- , NigeriaThis study examined the correlation between loneliness and four dimensions of psychological well-being (PWB) of old people in South Africa as they vary by their socio-demographic characteristics. Respondents were a non-probability/random sample of 301 elderly in Buffalo City, South Africa... -
Validity of Mini Nutritional Assessment tool among an elderly population in Yeka sub-city, Addis Ababa, Ethiopia
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Mesfin Agachew Woldekidan --- , Ethiopia Demewoz Haile --- , Ethiopia Bilal Shikur --- , Ethiopia Seifu Hagos Gebreyesus --- , EthiopiaBackground: The widely used nutritional assessment tool used for the elderly includes the Mini Nutritional Assessment (MNA) and Mini Nutritional Assessment–Short Form (MNA-SF) tool. These tools have not been evaluated for their validity and reliability among the elderly population of... -
Energy and water utilization in smallholder dairy farming: A milk bulking group case study in Malawi
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Thomas Nyanda Reuben --- , Malawi Grivin Chipula --- , Malawi Thawani Mpatama Sanjika --- , Malawi Darwin Dodoma Singa --- , MalawiMalawi’s dairy farming is dominated by smallholder farmers living in rural areas. The farmers practise hand-milking and have an unreliable supply of clean water. Consequently, low milk yields of generally low quality are realized. Machines can safely be used for... -
Honouring the opening: Unfolding the rich ground between the philosophical thinking of Martin Heidegger and practice-based empirical work
Item type: Journal Article • Journal: Indo-Pacific Journal of Phenomenology • Authors: Kitty Maria Suddick --- , United Kingdom Vinette Cross --- , United Kingdom Pirjo Vuoskoski --- , Finland Kathleen T. Galvin --- , United Kingdom Graham Stew --- , United KingdomThe aim of this article is to bring philosophical thinking closer to practice-based empirical work. Using Martin Heidegger’s philosophy, it offers a bridge between these two worlds, attempting to provide philosophical depth to the findings of a hermeneutic phenomenological study... -
Introduction of an electronic petition system in the City of Tshwane – A municipal residents’ perspective
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Queen E. Malemela --- , South Africa Ricky M. Mukonza --- , South AfricaPublic participation has been found, in prior related studies, as a way of demonstrating impartiality and ensuring inclusivity. In developed countries, governments ensure public participation using e-petitions. This study focused on determining municipal residents’ perceptions of the electronic petition system... -
Estimation of pesticide mixture interaction in Nile tilapia (Oreochromis niloticus) using survival analysis
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: KC Kanu --- , Nigeria NH Amaeze --- , Nigeria AA Otitoloju --- , NigeriaThe acute toxicity of the pesticides atrazine, mancozeb, chlorpyrifos and lambda-cyhalothrin, acting singly and jointly, was assessed on Nile tilapia (Oreochromis niloticus) fingerlings. Median lethal concentration (LC50), median lethal time (LT50), and mixture interaction were estimated, whereas survival analysis was... -
The spatial ecology of black-backed jackals (Canis mesomelas) in a protected mountainous grassland area
Item type: Journal Article • Journal: African Zoology • Authors: Alexander Edward Botha --- , South Africa Angela Caren Bruns --- , South Africa Aliza le Roux --- , South AfricaAn animal’s ability to traverse a landscape and utilise available resources is vital for its survival. The movement patterns of an animal provide insight into space use, activity patterns and ecological requirements that are imperative for successful farming and wildlife... -
An evaluation of the environmental behaviour, fate and risk of key pesticides used in South African forest plantations
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Noxolo Nokwethemba Ndlovu --- , South Africa Keith Little --- , South Africa Brenda Baillie --- , New Zealand Carol Rolando --- , New ZealandPesticides are important for the management of pests and diseases that have a negative impact on the sustainability of the forestry industry. Nevertheless, there is a trend to reduce pesticide use owing to the potential detrimental impacts they pose to... -
Analysis of offshore wind energy potential for power generation in three selected locations in Nigeria
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Mamman Rabiu Onoruoiza --- , Nigeria Oyewole Adedipe --- , Nigeria Sunday Albert Lawal --- , Nigeria Oluwafemi Ayodeji Olugboji --- , Nigeria Victor Chiagozie Nwachukwu --- , NigeriaThe rise in the global carbon footprint arising from fossil fuel sources has necessitated the need to explore sustainable and eco-friendly sources of energy. Wind as a source of renewable energy has been underutilized in Nigeria and this study is... -
Exploring the perception of Nigerians towards nuclear power generation
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Daniel R. E. Ewim --- , South Africa Stephen S. Oyewobi --- , Nigeria Michael O. Dioha --- , India Chibuike E. Daraojimba --- , South Africa Suzzie O. Oyakhire --- , Nigeria Zhongjie Huan --- , South AfricaTo decarbonize the Nigerian power sector and ensure a reliable electricity supply, nuclear power will play a key role. However, public acceptance must be considered for the successful introduction of nuclear power. This study examines the perceptions of Nigerians towards... -
Host specificity of the Pygmy Falcon Polihierax semitorquatus: a review
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: H Dieter Oschadleus --- , South AfricaThe Pygmy Falcon Polihierax semitorquatus does not build its own nest but is an obligate user of the nests of colonial birds for roosting and breeding. The nests of various weavers and starlings have been listed, suggesting a wide range... -
Contribution of ankle-brachial index measurement in screening for arteriopathy obliterans of the lower limbs in type 2 diabetics
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: Sitraka Angelo Raharinavalona --- , Madagascar Rija Eric Raherison --- , Madagascar Thierry Razanamparany --- , Madagascar Dally Rasoaniana --- , Madagascar Radonirina Lazasoa Andrianasolo --- , Madagascar Andrinirina Dave Patrick Rakotomalala --- , Madagascar -
Technology transfer and absorptive capacities in South Africa's medical device industry
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Tebogo Simon Ramaoka --- University of Johannesburg, South Africa Erika Kraemer-Mbula --- University of Johannesburg, South AfricaThis paper explores South African manufacturing of medical devices, focusing on firms’ acquisition of imported and domestic technologies through technology transfer and their related absorptive capacity. Using an exploratory sequential mixed-methods approach, this paper demonstrates that technology transfer does occur... -
On the parabolicity of linear Weingarten spacelike submanifolds in the de Sitter space
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Railane Antonia --- Universidade Federal da Paraíba, Brazil Henrique F. de Lima --- Universidade Federal de Campina Grande, BrazilIn this paper, we deal with complete linear Weingarten spacelike sub-manifold immersed with parallel normalized mean curvature vector in de Sitter space of index p. Imposing appropriate restrictions on the values of the mean curvature function H, we establish a... -
New host–parasite associations of Cymothoidae (Crustacea, Isopoda) infesting elasmobranch fishes in Tunisian waters
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: F Youssef --- El Manar University, Tunisia B Benmansouand --- El Manar University, Tunisia Z Ramdane --- University of Bejaia, AlgeriaBetween 2015 and 2020, 2 092 specimens of cartilaginous fishes (Chondrichthyes: Elasmobranchii) belonging to eight species and five genera were sampled along the Tunisian coast and examined for their cymothoid parasites, Among the eight examined elasmobranch species, only three were... -
Patterns of fish distribution in tropical rock pools at Príncipe Island, Gulf of Guinea
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: J Azevedo e Silva --- University of Lisbon, Portugal AJ Almeida --- University of Lisbon, Portugal M Cravo --- University of Lisbon, Portugal MP Pais --- University of Lisbon, Portugal Y Santos --- , São Tomé e Príncipe J Paula --- University of Lisbon, PortugalLittle is known about the ichthyofauna from intertidal rock pools of the west coast of Africa, especially in the Gulf of Guinea. Rock pools are characteristic habitats of the intertidal zone of structurally complex rocky shores, adding important niche space... -
Impact of liming on extractable phosphorus, exchangeable base cations, and effective cation exchange capacity of eastern Free State soils
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: HJJ van Zyl --- University of the Free State, South Africa CC du Preez --- University of the Free State, South AfricaSoil acidity can adversely affect wheat production in the eastern Free State, South Africa. Liming of the soils is therefore essential. The aim of this study was to establish whether extractable phosphorus (P), exchangeable calcium (Ca), magnesium (Mg) and potassium... -
Assessment of the acoustic change in heat-treated Pinus elliottii and Bertholletia excelsa wood from homogeneous plantations in Brazil
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Daiana Sousa de Jesus --- Federal Rural University of Rio de Janeiro, Brazil Jonnys Paz Castro --- Federal Rural University of Rio de Janeiro, Brazil Taiane Guedes --- Universidade Federal de Lavras, Brazil José Reinaldo Moreira da Silva --- Universidade Federal de Lavras, Brazil João Vicente de Figueiredo Latorraca --- Federal Rural University of Rio de Janeiro, Brazil Alexandre Miguel do Nascimento --- Federal Rural University of Rio de Janeiro, BrazilHeat treatment has been used in wood to improve its technological properties, but due to the complex nature of wood, it is necessary to carry out analyses to confirm the changes, and also to investigate which temperatures and protocols are... -
Human resources and innovation capability: Evidences from Nigeria food and beverage firms
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Helen Olubunmi Aderemi --- Obafemi Awolowo University, Nigeria Victor Oluwasina Sobanke --- National Centre for Technology Management (NACETEM), Nigeria Matthew Olugbemiga Ilori --- Obafemi Awolowo University, NigeriaHuman resources are recognized as the ultimate and most indispensable resource in economic development. In this study, an inquiry was made to ascertain the determinants of workers’ innovativeness. A survey of 229 respondents in food and beverage processing firms selected... -
Patients-to-healthcare workers HIV transmission risk from sharp injuries, Southern Ethiopia
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Biruck Desalegn [d204e18] Hunachew Beyene Ryo YamadaBackground: Accidental needlestick injury rate among healthcare workers in Hawassa is extremely high. Epidemiological findings proved the infectious potential of this injury contaminated with a Human Immunodeficiency Virus (HIV)-infected patient's blood. -
Perception of government employees on the use of biometric technology in determining a person’s ethnic group in Nigeria
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Martins E. Irhebhude --- Nigerian Defence Academy, Nigeria Adeola O. Kolawole --- Nigerian Defence Academy, Nigeria Agwi C. Uche --- Nigerian Defence Academy, Nigeria Adeleye V. Dupe --- Nigerian Defence Academy, NigeriaSelected biometric technologies such as iris, face, gait, voice, etc. are widely used for the recognition of individuals. This paper presents a biometric technology perception by members of staff from government agencies in Nigeria, namely: the National Identity Management Commission... -
Estimating population changes in humpback whales Megaptera novaeangliae migrating past Cape Vidal, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: C Wilkinson --- Cape Peninsula University of Technology, South Africa E Seyboth --- Cape Peninsula University of Technology, South Africa J Olbers --- , South Africa E Vermeulen --- University of Pretoria, South Africa R Kramer --- WILDTRUST, South Africa K Findlay --- Cape Peninsula University of Technology, South AfricaShore-based surveys of humpback whales Megaptera novaeangliae were performed from Cape Vidal, on the east coast of South Africa (iSimangaliso Marine Protected Area, Indian Ocean), from two independent platforms between 27 June and 7 August in 2018 and 2019, to... -
On the block functions generating the limit q-Lupaş operator
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Sofiya Ostrovska --- Atilim University, Turkey Mehmet Turan --- Atilim University, TurkeyThe limit q-Lupaş operator emerged in the study of the Lupaş q-analogue of the Bernstein operator. Afterward, it has been found that it is connected to numerical analysis, computer aided geometric design, probability theory and other areas. In this paper,... -
Living museums in Namibia: between empowerment and exploitation
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Hana Horáková --- Palacký University Olomouc, Czech Republic Josefína Kufová --- Palacký University Olomouc, Czech Republic Nicola Raúl --- Palacký University Olomouc, Czech RepublicThis article examines the recent rise of living museums in postcolonial Namibia, one of the most rapidly increasing forms of cultural tourism. Living museums are designed and executed by minority communities that seek to reach socio-economic emancipation by making use... -
Assessment of metal pollution in sediment and its impact on the macrobenthic community of Richards Bay Harbour, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: JI Izegaegbe --- University of Zululand, South Africa L Vivier --- University of Zululand, South Africa HMM Mzimela --- University of Zululand, South AfricaPort and industrial activities often cause contamination of estuarine sediments, yet information on sediment metal contamination in Richards Bay Harbour is limited. This study examined the extent and ecological relevance of metal contamination using sediment quality guidelines, pollution indices, macrobenthic... -
Cadmium exposure induces testicular oxidative damage and histopathological changes in the freshwater leech Limnatis nilotica (Savigny, 1822): the protective role of salicylic acid
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Ichrak Khaled --- University of Gafsa, Tunisia Issam Saidi --- University of Gafsa, Tunisia Raja Ben Ahmed --- Université de Tunis El Manar, Tunisia Ramzi Amari --- University of Gafsa, Tunisia Waleed Aldahmash --- King Saud University, Saudi Arabia Octavian Pacioglu --- National Institute of Research and Development for Biological Sciences, Romania Najla Hfaiedh --- University of Gafsa, Tunisia Abdel Halim Harrath --- King Saud University, Saudi ArabiaThe present study examined the histopathological changes and some parameters of oxidative stress in the testes of the freshwater leech Limnatis nilotica, following their exposure to 50 µg l−1 of cadmium (Cd). The protective effects of salicylic acid (SA) in... -
How loneliness influences the city identity of Chinese migrant children: A moderated mediation model
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Yanmei Tang --- Nanjing Xiaozhuang University, China Hong Zhou --- Nanjing Xiaozhuang University, China Shuangzhou Chen --- The University of Hong Kong, ChinaThis study explored the mediating role of resilience and the moderating role of social class on the relationship between loneliness and migrant children’s city identity. The participants were 479 Chinese migrant children (females = 52%, mean age = 10.07 years,... -
Empowering women in South African law enforcement: Developing authenticity as best-self
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Rochelle Jacobs --- University of South Africa, South Africa Antoni Barnard --- University of South Africa, South AfricaThis hermeneutic phenomenological study explored the authenticity experiences of South African women in law enforcement from a best-self perspective. Narrative interviews were conducted with 12 women from police and traffic services, aged between 26 and 55 (25% black, 58% mixed... -
Assessment of retrained public service employees for effective performance: a professional development myth
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Emmanuel Selemani Shindika --- President’s Office, Public Service Management, Tanzania Public Service College, Tanzania Priviledge Cheteni --- University of Fort Hare, South AfricaThe public sector necessitates the development of public service managers’ competencies. However, this need has received far too little attention, particularly in terms of stakeholder management and service delivery. The case study method was used to interview seven public managers... -
Contemporary dining room professionals: towards a “hip” style of hospitality identity
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Kajsa Hult --- Culinary Arts & Meal Science, Örebro University, Sweden Henrik Scander --- Culinary Arts & Meal Science, Örebro University, Sweden Ute Walter --- Culinary Arts & Meal Science, Örebro University, SwedenInterest in having an occupation that connects with consumption practices of taste has increased in the contemporary creative economy. In addition, the restaurant scene in Sweden as well as globally has recently been moving towards a casualisation of high-quality restaurants,... -
Delayed rooting hormone application and stem cutting collection time improved Flacourtia indica rooting ability and root growth
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Simon A Mng’omba --- Lilongwe University of Agriculture and Natural Resources, MalawiFlacourtia indica (Burm.f.) Merr. is an important fruit and medicinal tree in Southern Africa. Efforts to achieve early fruiting have failed with juvenile propagules (planting materials) such as seed. Assessing rooting ability of mature (fruit bearing) F. indica stem cuttings... -
Exponential stability of a laminated beam system with thermoelasticity of type III and distributed delay
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Kassimu Mpungu --- Mountains of the Moon University, UgandaIn this work, we consider a one-dimensional laminated Timoshenko beam system with thermoelasticity of type III and distributed delay. Our concern is to investigate the exponential stability of the vibrations in the system without structural damping. By exploiting the perturbed... -
Thermal tolerances of littorinid snails from temperate and subtropical South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: CD McQuaid --- Rhodes University, South Africa TG Matumba --- Rhodes University, South AfricaEnvironmental temperature affects ectotherm performance and fitness because physiological performance increases up to a sublethal optimum temperature; this is not fixed, but depends on the species and individual history. We explored the influence of species identity, size and thermal history... -
Cultural identity, cultural confidence, and folk activities: An empirical study of the folk culture of Moon-cake Gambling at the Mid-Autumn Festival in Xiamen, China
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Qiaohua He --- Xiamen Huaxia University, China Shiqi Lin --- Xiamen Huaxia University, China Yanbin Wu --- Hanshan Normal University, China Rongrong Ding --- Liming Vocational University, ChinaThis article aims to clarify the relationship between cultural identity, cultural confidence, and folk activities; to strengthen the role of folk activities in improving cultural identity and cultural confidence. Study participants were 454 people participating in Moon-cake Gambling at the... -
On the injectivity with respect to q of the Lupaş q-transform
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Övgü Gürel Yılmaz --- Recep Tayyip Erdogan University, Turkey Sofiya Ostrovska --- Atilim University, Turkey Mehmet Turan --- Atilim University, TurkeyThe Lupaş q-transform has first appeared in the study of the Lupaş q-analogue of the Bernstein operator. Given 0 < q < 1 and f ∈ C [0, 1], the Lupaş q-transform is defined by -
Exponential decay of solutions to an inertial model for a wave equation with viscoelastic damping and time varying delay
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Mohamed Berbiche --- Biskra University, AlgeriaIn the present work, we study the global existence and uniform decay rates of solutions to the initial-boundary value problem related to the dynamic behavior of evolution equations accounting for rotational inertial forces along with a linear time-nonlocal Kelvin-Voigt damping... -
A comonadicity theorem for partial comodules
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Eliezer Batista --- Universidade Federal de Santa Catarina, Brazil William Hautekiet --- Université Libre de Bruxelles, Belgium Joost Vercruysse --- Université Libre de Bruxelles, BelgiumWe show that the category of partial comodules over a Hopf algebra H is comonadic over Vectk and provide an explicit construction of this comonad using topological vector spaces. The case when H is finite-dimensional is treated in detail. A... -
Distribution and host preference of a potential biocontrol agent with a new association for the alien water lily Nymphaea mexicana in South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: MK Reid --- Rhodes University, South Africa GF Sutton --- Rhodes University, South Africa JA Coetzee --- Rhodes University, South Africa LA Gettys --- University of Florida, United States MP Hill --- Rhodes University, South AfricaAlthough classical biological control makes use of natural enemies from the native range of an invasive alien species, there are occurrences in which species in the invaded range expand their host range and form new associations with the invader. Bagous... -
Comparison of the acute toxicity and behavioural effects of two pyrethroids on African catfish Clarias gariepinus fingerlings
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: EO Ogueji --- Alex Ekwueme Federal University, Nigeria JJ Ekpenyong --- Alex Ekwueme Federal University, Nigeria GU Amana --- Kogi State University, Nigeria EB Tabi --- Alex Ekwueme Federal University, Nigeria IB Okey --- Cross River University of Technology, Nigeria MO Olaolu --- Alex Ekwueme Federal University, Nigeria JN Nwakpa --- Ebonyi State University, NigeriaTwo of the most-commonly used pyrethroid insecticides were subjected to static bioassays to determine their acute toxicity to Clarias gariepinus fingerlings, followed by comparisons of their impact on mortality and behavioural changes in the fish. The LC50 values for deltamethrin... -
Wide variation in aggressiveness and growth in South African Fusarium circinatum isolates with geographical origin as the primary determinant
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: BS Swalarsk-Parry --- University of Pretoria, South Africa L De Vos --- University of Pretoria, South Africa FF Fru --- University of Pretoria, South Africa QC Santana --- University of Pretoria, South Africa MA van der Nest --- University of Pretoria, South Africa BD Wingfield --- University of Pretoria, South Africa MJ Wingfield --- University of Pretoria, South Africa DA Herron --- University of Pretoria, South Africa JB Ramaswe --- University of Pretoria, South Africa C Dewing --- University of Pretoria, South Africa M Sayari --- University of Pretoria, South Africa NA van der Merwe --- University of Pretoria, South Africa S van Wyk --- University of Pretoria, South Africa FA Lane --- University of Pretoria, South Africa AM Wilson --- University of Pretoria, South Africa OO Adegeye --- University of Pretoria, South Africa NC Soal --- University of Pretoria, South Africa J-L Price --- University of Pretoria, South Africa ET Steenkamp --- University of Pretoria, South AfricaFusarium circinatum is a globally important fungal pathogen that causes pitch canker on a wide range of Pinus species. In this study, we considered mycelial growth in culture and aggressiveness of a South African population of F. circinatum isolates. The... -
Atomicity of positive monoids
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Scott T. Chapman --- Sam Houston State University, Marly Gotti --- Data Science & Engineering,An additive submonoid of the nonnegative cone of the real line is called a positive monoid. Positive monoids consisting of rational numbers (also known as Puiseux monoids) have been the subject of several recent papers. Moreover, those generated by a... -
Some characterizations of ergodicity in Riesz spaces
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Youssef Azouzi --- Tunis-El Manar University, Tunisia Marwa Masmoudi --- Tunis-El Manar University, TunisiaIn the recent surge of papers on ergodic theory within Riesz spaces, this article contributes by introducing enhanced characterizations of ergodicity. Our work extends and strengthens prior results of both the authors and Homann, Kuo, and Watson. Specifically, we show... -
Semi-c-periodicity, c-uniform recurrence and almost automorphy in the complex plane
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: H. Ounis --- University of Alicante, Spain J.M. Sepulcre --- University of Alicante, SpainThis paper is devoted to develop the concepts of semi-c-periodicity, c-uniform recurrence and almost automorphy for functions defined on vertical strips in the complex plane, where c is a non-zero complex number. As an extension of the study performed for... -
Do changes in star selection criteria affect analyst behaviour?
Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Karam Kim --- Sungkyunkwan University, Republic of Korea Doojin Ryu --- Sungkyunkwan University, Republic of Korea Jinyoung Yu --- Xi'an Jiaotong-Liverpool University, ChinaThis study examines whether the star analyst selection criteria affect analysts’ coverage decisions and the informativeness of their reports. We focus on a change to the star evaluation criteria that increased the importance of quantitative standards. After the reform, analysts... -
Building bridges: how hospitality can foster positive peace
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Latifa Benhadda --- NHLStenden University of Applied Sciences, The Netherlands Rainer Prasetya --- NHLStenden University of Applied Sciences, The NetherlandsThis opinion piece explores the relationship between hospitality and positive peace from a social and ethical perspective, focusing on human dignity, justice and care. It argues that hospitality, beyond its commercial lens, should be viewed through the interaction between host... -
Evaluation of the effect of soil acidity amelioration on maize yield and nutrient interrelationships using stepwise regression and nutrient vector analysis
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: H.G. Jansen van Ransburg --- Department of Plant Production and Soil Science, University of Pretoria, Pretoria 0002, South Africa A.S. Claassens --- Department of Plant Production and Soil Science, University of Pretoria, Pretoria 0002, South Africa D.J. Beukes --- ARC-lnstitute for Soil, Climate and Water, Private Bag X79, Pretoria 0001, South AfricaThe interrelationships between elemental content of selected soil and leaf nutrients and maize grain yield were evaluated in a liming experiment conducted on a Hutton and Oakleaf soil in a resource-poor farming area in the Mpumalanga Province of South Africa... -
Nontrivial solutions for multiparameter k-Hessian systems
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Huanhuan Ding --- Northwest Normal University, People’s Republic of China Chenghua Gao --- Northwest Normal University, People’s Republic of China Xingyue He --- Northwest Normal University, People’s Republic of ChinaThis paper is devoted to studying the coupled system of multiparameter k-Hessian equations -
Identification of factors influencing electricity consumption in Yaoundé City, Cameroon
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Léonce Tokam --- University of Lomé, Togo Sanoussi S. Ouro-Djobo --- University of Lomé, TogoThis study explores the factors influencing household electricity consumption in Yaoundé, Cameroon, where energy poverty, frequent power cuts and high tariffs pose major challenges to ensuring reliable, affordable and permanent access to electricity for populations, given the energy potential the... -
Integrating seasonal forecast information with crop models to inform decision making in small-scale farming under climate variability
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Siyabusa Mkuhlani --- Climate Systems Analysis Group, Environmental and Geographical Science Department, Faculty of Science, University of Cape Town, South Africa Farirai Rusere --- University of the Witwatersrand, South Africa Nkulumo Zinyengere --- World Bank Group, USA Olivier Crespo --- Climate Systems Analysis Group, Environmental and Geographical Science Department, Faculty of Science, University of Cape Town, South AfricaIntegrating seasonal forecast information and crop models has the potential to inform farm management decisions under climate variability. The study assessed the feasibility of integrating seasonal forecast information into crop models for decision making in small-scale farming conditions in South... -
Minimising the eccentricity index in trees with given segment sequence
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Imran Allie --- University of Cape Town, South Africa Michael Wade --- University of Cape Town, South AfricaThe eccentricity index of a graph is the sum of the eccentricities of all vertices in the graph. A segment S of a tree T is a subgraph isomorphic to a non-trivial path where all internal vertices have degree 2... -
The future of hospitality management: adapting to Generation Z’s values and preferences
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Janneke Lensen --- Hotel Management School Leeuwarden, NHL Stenden University of Applied Sciences, Joost IJsselmuiden --- Hotel Management School Leeuwarden, NHL Stenden University of Applied Sciences, Rodney Westerlaken --- Hotel Management School Leeuwarden, NHL Stenden University of Applied Sciences,This viewpoint article explores the evolving landscape of hospitality management in light of Generation Z emerging as a dominant consumer force and being a significant percentage of the workforce. The workforce is rapidly changing in this field, since the hospitality... -
Solar energy, the silver bullet to tackle perennial energy access challenges in Nigeria rural households: A case study
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Kesiena Owebor --- Delta State University, Nigeria Kesiena Ezewu --- Delta State University, Nigeria Justus Iroro Oboh --- Delta State University, Nigeria Jude Ebieladoh Sinebe --- Delta State University, Nigeria Ogheneakpobo Jonathan Eyenubo --- Delta State University, Nigeria Smith Orode Otuagoma --- Delta State University, Nigeria Esiri Monday Amagre --- Delta State University, NigeriaPoor access to clean energy impacts the livelihood of the Nigeria rural population. This study investigated the use of solar energy in tackling the recurrent energy access challenges in Isoko South, Nigeria. Both qualitative and quantitative methods were applied to... -
Conceptualising and revealing political resistance in Zimbabwe through (re)naming roads in Bulawayo
Item type: Journal Article • Journal: South African Journal of African Languages • Authors: Nkululeko Sibanda --- Rhodes University, South Africa Progress Dube --- University of South Africa, South AfricaThe Zimbabwe central government issued a directive in November 2019 and early 2020 gazetting three statutory instruments for changes to names of buildings and streets as a directive to all local authorities to comply. In February 2020, the Bulawayo City... -
Ethnic leadership in Africa: A systematic literature review
Item type: Journal Article • Journal: Africa Journal of Management • Authors: Codou Samba --- The University of Tennessee, USA Phyllis Swanzy-Krah --- Universität Leipzig, Germany Charlotte Adjanor-Doku --- Kwame Nkrumah University of Science and Technology, Ghana Isaac Delali Darke --- Kwame Nkrumah University of Science and Technology, Ghana Baniyelme D. Zoogah --- McMaster University, CanadaThis paper presents a systematic literature review of ethnic leadership in Africa, analyzing 31 peer-reviewed articles published between 1960 and 2024 across multiple disciplines. We define ethnic leadership as the process by which individuals mobilize shared ethnic identity as a... -
The flexural and sawn timber properties of Pinus patula × tecunumanii (low elevation) from the southern Cape, South Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: C Brand Wessels --- Stellenbosch University, South Africa Christel Malek --- MTO Group, South Africa Gary R Hodge --- North Carolina State University, USA Bruno Monteiro Balboni --- Stellenbosch University, South AfricaPinus species currently planted for saw log production in the southern Cape, South Africa, present various challenges for growers and processors, including susceptibility to Fusarium circinatum, poor stem form, and various wood quality concerns. In this study P. patula ×... -
Pre- and post-emergent herbicides tested as alternatives to glyphosate for vegetation management during pine and eucalypt establishment, South Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Keith M Little --- Nelson Mandela University, South Africa Ira Tzitzika --- Nelson Mandela University, South AfricaPre-emergent, selective and desiccant herbicides were tested for the control of competing vegetation in a pine and eucalypt trial and, if successful, to reduce the reliance on manual ring-weeding and/or glyphosate (current practice). Both trials consisted of ten treatments replicated... -
Influence of the Benguela Upwelling System on the genetic connectivity of blacktail seabream Diplodus capensis across southern Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: WF Olivier --- Genetics and Microbiology, University of Pretoria, South Africa WM Potts --- Rhodes University, South Africa A-R Childs --- Rhodes University, South Africa C Santos --- Agostinho Neto University, Angola PW Shaw --- Aberystwyth University, R Henriques --- Genetics and Microbiology, University of Pretoria, South AfricaOceanographic features such as upwelling cells and currents contribute to shaping the evolutionary history of marine fishes, including species that may be important socio-economic resources. However, the impacts of these barriers are often cryptic and may change, particularly in a... -
Comparing the activity of exploited and unexploited populations of a reef-dwelling seabream, Chrysoblephus laticeps, during an extreme upwelling and cold-spell event
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: NT Mlotshwa --- Rhodes University, South Africa MR Skeeles --- Rhodes University, South Africa MI Duncan --- Rhodes University, South Africa C Muller --- Rhodes University, South Africa WM Potts --- Rhodes University, South Africa AC Winkler --- Rhodes University, South Africa A-R Childs --- Rhodes University, South AfricaAlong the south coast of South Africa, extreme upwelling events lead to rapid temperature declines and prolonged marine cold-spells, which have, on occasion, led to large-scale mortalities of coastal fishes. In a somewhat antagonistic process, fishing exploitation has been shown... -
Pastures established on rehabilitated surface coal mined land: an assessment of forage production and implications for livestock grazing
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Emmanuel Nkosinathi Cele --- University of Pretoria, South Africa Monde Rapiya --- University of Pretoria, South Africa Wayne Sanders --- University of Pretoria, South Africa Wayne Truter --- Enterprises University of Pretoria, South AfricaCurrently, land rehabilitation best practice in South Africa is to revegetate ameliorated soil with grass mixtures. These grasses have valuable grazing potential that can deliver great benefits to livestock farmers. However, due to paucity of research and published findings, the... -
Wisdom in folktales: Exploring primary marriage counselling in Zimbabwean Ndebele traditions
Item type: Journal Article • Journal: South African Journal of African Languages • Authors: Lickel Ndebele --- University of South Africa, South AfricaThis article interrogates Ndebele folktales to establish how they were/are utilised as a primary marriage counselling vehicle in Zimbabwe’s Ndebele society. The analysis is made against the backdrop of increasing marriage and family instability as shown through domestic violence, divorce,... -
Paclobutrazol application in eucalypt clones promotes morphological changes without affecting the physiological characteristics
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Jenifer Nathanna Marcelino Moura --- Universidade Federal do Acre, Brazil Paulo André Trazzi --- Universidade Federal do Acre, Brazil Elsilene Thaynara Melo Sales --- Universidade Federal do Acre, Brazil Marcio Oliveira Martins --- Universidade Federal do Acre, Brazil Keveny da Silva e Silva --- Universidade Federal do Acre, Brazil Gabriel Melo Mustafa --- Universidade Federal do Acre, Brazil Barbara Valentim Oliveira --- Universidade Federal do Acre, BrazilThe aim of this study was to investigate the morphophysiology of young eucalypt clones in response to different water regimes and paclobutrazol (PBZ) concentrations applied to the soil. The experiment was conducted in a greenhouse environment at the Federal University... -
Large bird collision mortality on power lines in southern Namibia
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: John Pallett --- University of Cape Town, South Africa Peter G Ryan --- University of Cape Town, South AfricaGlobally, power lines cause significant mortalities of birds through collisions and electrocutions, yet this problem has received only sporadic attention in Namibia. Vehicle-based surveys were undertaken every three months for one year to record mortalities of large birds along 349... -
The voice of a people: Exploring language and ethnicity among the amaBhaca in uMzimkhulu and KwaBhaca
Item type: Journal Article • Journal: South African Journal of African Languages • Authors: Yanga LP Majola --- Tshwane University of Technology Mbombela Campus, South Africa Evangeline B Zungu --- University of Johannesburg, South AfricaAmaBhaca speak isiBhaca and belong to the Nguni language and ethnic group; they are predominantly found in parts of uMzimkhulu, KwaZulu-Natal (KZN), and most parts of KwaBhaca (formerly Mount Frere) in the Eastern Cape (EC) province in modern-day South Africa...
