Search
Search results for
We found
41 results for you
-
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... -
Soil water variability in the Weatherley grassland catchment, South Africa: I. Evapotranspiration
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: CW van Huyssteen --- Department of Soil, Crop and Climate Sciences, South Africa TB Zere --- Department of Soil, Crop and Climate Sciences, South Africa M Hensley --- Department of Soil, Crop and Climate Sciences, South AfricaEvapotranspiration (ET) is a major component of the soil water balance and therefore requires accurate determination to quantify catchment water yield. Six-year daily ET was determined at 300 mm depth intervals in the root zone of 28 soil profiles in... -
Soil water variability in the Weatherley grassland catchment, South Africa: II. Soil water content
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: CW van Huyssteen --- Department of Soil, Crop and Climate Sciences, South Africa TB Zere --- Department of Soil, Crop and Climate Sciences, South Africa M Hensley --- Department of Soil, Crop and Climate Sciences, South AfricaSoil water content is a major factor that affects the hydrological response of a hillslope or catchment. It is therefore important to have reliable soil water content data to estimate catchment water yield. Daily soil water content (θ) data was... -
Hydrological classification of orthic A horizons in Weatherley, South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: CW van Huyssteen --- Department of Soil-, Crop- and Climate Science, South AfricaOrthic A horizons carry little interpretive, especially hydrological, value. This paper aims to elucidate the hydrological interpretation of orthic A horizons. Measured water contents in the orthic A horizons of 28 profiles in the Weatherley catchment of South Africa were... -
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,... -
Principles of soil classification and the future of the South African system
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: CW van Huyssteen --- Soil, Crop and Climate Science, South Africa DP Turner --- ARC–Institute for Soil, South Africa PAL Le Roux --- Soil, Crop and Climate Science, South AfricaHumans classify their environment to create order, make it understandable, aid recollection and to communicate. The nature of these classifications is not always understood, because they are learnt from an early age. Building on these principles provides a sound basis... -
Presidential Address — 2002: The Grassland Society of Southern Africa should be striving for greater synergy with the farming community
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: DCW Goodenough -
Fish as a resource in a rural river catchment in the Northern Province, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: BCW van der WaalThe rural population in the Mutshindudi River valley, in the north-eastern corner of the Northern Province, accept locally-caught freshwater fish as food (85%), but tinned pilchards are the most commonly eaten fish. Fishing gear was recorded in 70% of the... -
Dutch domesticated Clarias with mixed genetic background now used in aquaculture in South Africa, with unpredictable consequences for biodiversity
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: JimA Cambray BenCW van der Waal -
Enzymatic activities as potential stress biomarkers of two substituted benzene compounds in Propsilocerus akamusi (Diptera: Chironomidae)
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: CW Cao --- Department of Forest Protection, People's Republic of China XP Li --- Department of Forest Protection, People's Republic of China SL Ge --- Department of Forest Protection, People's Republic of China LL Sun --- Department of Forest Protection, People's Republic of China ZY Wang --- Department of Forest Protection, People's Republic of ChinaChironomids are a globally distributed family of insects that can serve as biological indicators of environmental pollution. Substituted benzenes are a group of serious environmental pollutants and severely threaten biological and human health. In order to investigate potential stress biomarkers... -
Temporal and sex-specific variation in growth rates of Marabou Stork Leptoptilos crumeniferus chicks
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Ara Monadjem --- All Out Africa Research Unit, Department of Biological Sciences, Swaziland AndrewJ Bamford --- School of Biosciences, UK IanCW Hardy --- School of Biosciences, UK JasonK Earnshaw --- All Out Africa Research Unit, Department of Biological Sciences, Swaziland Elaine Franklin --- , Swaziland DesireL Dalton --- , South Africa Antoinette Kotze --- , South AfricaThe nesting success of Marabou Storks Leptoptilos crumeniferus breeding in north-eastern Swaziland is closely associated with rainfall, with nests started late in the season exposed to higher rainfall and showing lower success. This may be related to lower food intake... -
East African Hip Hop: Youth Culture and Globalization
Item type: Journal Article • Journal: Journal of the Musical Arts in Africa • Authors: Melissa McWalter --- University of Cape Town, -
A stratification of the South African forestry landscape based on climatic parameters
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: JH Louw --- School of Natural Resource Management, South Africa I Germishuizen --- , South Africa CW Smith --- Paperbark Forestry Consulting, South AfricaThe benefits of high-resolution forest site classification systems have been widely acknowledged in South Africa as a prerequisite for decision-making in forestry management. Although substantial research and development work have been done on categorising and mapping the soil and geological... -
An effect of vegetation structure on carcass exploitation by vultures in an African savanna
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: AndrewJ Bamford --- School of Biosciences, UK Ara Monadjem --- All Out Africa Research Unit, Department of Biological Sciences, Swaziland IanCW Hardy --- School of Biosciences, UKCarcass utilisation by vultures may be constrained by the surrounding vegetation, as high vegetation densities may leave insufficient space for the vultures to take-off. We tested this by placing carcasses at 14 sites differing in density and height of the... -
Factors affecting diet, habitat selection and breeding success of the African Crowned Eagle Stephanoaetus coronatus in a fragmented landscape
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Christopher J Swatridge --- School of Biosciences, UK Ara Monadjem --- All Out Africa Research Unit, Department of Biological Sciences, Swaziland David J Steyn --- , South Africa Garth R Batchelor --- , South Africa Ian CW Hardy --- School of Biosciences, UKThis study aimed to identify variables that affect habitat selection and nesting success of the African Crowned Eagle Stephanoaetus coronatus, the largest forest raptor, in north-eastern South Africa. A preference for nesting in the Northern Mistbelt Forest vegetation type was... -
Cardiovascular genetic assessment and treatment in middle age to reduce the risk of heart disease and dementia in old age
Item type: Journal Article • Journal: South African Family Practice • Authors: MJ Kotze --- Genecare Molecular Genetics (Pty) Ltd., Christiaan Barnard Memorial Hospital, R Thiart --- Genecare Molecular Genetics (Pty) Ltd., Christiaan Barnard Memorial Hospital, FJ Hugo --- Psychiatry and Memory Clinic, FCW Potocnik --- Department of Psychiatry,Assessment and treatment of cardiovascular disease (CVD) risk factors as a preventable cause of cognitive decline, morbidity and mortality is an important clinical goal. The apolipoprotein E (Apo E) gene provides a genetic link between CVD and the development of... -
Medical students' perceptions of their development of ‘soft skills’ Part I: A qualitative research methodology
Item type: Journal Article • Journal: South African Family Practice • Authors: WJ Schurink --- Social Science Research Consultancy (SSRC), C Krüger --- Dept of Psychiatry, Faculty of Health Sciences, AM Bergh --- Faculty of Health Sciences, CW Van Staden --- Dept of Psychiatry, Faculty of Health Sciences, JL Roos --- Dept of Psychiatry, Faculty of Health Sciences, GE Pickworth --- Faculty of Health Sciences, PM Joubert --- Dept of Psychiatry, Faculty of Health Sciences, RR Du Preez --- Dept of Psychiatry, Faculty of Health Sciences, SV Grey --- University of Pretoria, BG Lindeque --- School of Medicine,Background -
Medical students' perceptions of their development of ‘soft skills’ Part II: The development of ‘soft skills’ through ‘guiding and growing’
Item type: Journal Article • Journal: South African Family Practice • Authors: AM Bergh --- Faculty of Health Sciences, CW Van Staden --- Dept of Psychiatry, Faculty of Health Sciences, PM Joubert --- Dept of Psychiatry, Faculty of Health Sciences, C Krüger --- Dept of Psychiatry, Faculty of Health Sciences, GE Pickworth --- Faculty of Health Sciences, JL Roos --- Dept of Psychiatry, Faculty of Health Sciences, WJ Schurink --- Social Science Research Consultancy (SSRC), RR Du Preez --- Dept of Psychiatry, Faculty of Health Sciences, SV Grey --- University of Pretoria, BG Lindeque --- School of Medicine,Background -
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... -
The correlation between the health-related fitness of healthy participants measured at home as opposed to fitness measured by sport scientists in a laboratory
Item type: Journal Article • Journal: South African Family Practice • Authors: CC Grant --- Department of Sports Medicine, South Africa DC Janse van Rensburg --- Department of Sports Medicine, South Africa MS Pepper --- Department of Immunology, South Africa PJ du Toit --- Department of Physiology, South Africa PS Wood --- Department of Biokinetics, Sport and Leisure Sciences, South Africa J Ker --- Department of Sports Medicine, South Africa PE Krüger --- Institute for Sport Research, South Africa CW Grobbelaar --- Department of Physiology, South Africa K Nolte --- Department of Biokinetics, Sport and Leisure Sciences, South Africa F Fletcher --- Department of Statistics, South Africa TC Grant --- Department of Sports Medicine, South AfricaBackground: Fitness is defined in the health context as a state of good health or physical condition, primarily as a result of exercise and proper nutrition. Conventional methods of measuring fitness are expensive, time consuming and require specialised methods. There... -
Do SASS5 scores vary with season in the South African highveld? A case study on the Skeerpoort River, North West province, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: HE Fourie --- Department of Zoology and Entomology, South Africa C Thirion --- Department of Water Affairs: Resource Quality Services, South Africa CW Weldon --- Department of Zoology and Entomology, South AfricaMacroinvertebrate assemblages can vary with season as a result of changing environmental conditions and phenology of individual species. The objective of this study was to determine whether results from the South African Scoring System version 5 (SASS5) are affected by... -
Schistosoma haematobium prevalence in school children in the rural Eastern Cape Province, South Africa
Item type: Journal Article • Journal: Southern African Journal of Epidemiology and Infection • Authors: E F Meents --- Ngcwanguba Community Health Care Centre, Eastern Cape Province, T H Boyles --- Madwaleni Hospital,The urine of 209 children was examined for haematuria and the presence of schistosome eggs. Comparing the infection rate of 72.3% with existing data suggests an increase in the prevalence over the last decades. Schistosomiasis lacks the attention it deserves... -
A Note on Analeptes TrifasciataFabr. and Paranaleptes ReticulataThoms. (Coleop. Lamiinae) Two Tree Girdling Beetles of Tropical Africa Item type: Journal Article • Journal: East African Agricultural and Forestry Journal • Authors: Tecwyn Jones --- E.A.A.F.R.O., Kenya -
Oemida Gahani
Distant (Cerambycidae). Its Host Plants, Host Range and Distribution Item type: Journal Article • Journal: East African Agricultural and Forestry Journal • Authors: Tecwyn Jones --- E.A.A.F.R.O., Kenya S. J. Curry --- Forest Department, Kenya -
Hazards of International Exchange of Forest Trees and Products
Item type: Journal Article • Journal: East African Agricultural and Forestry Journal • Authors: F. M. L. Sheffield --- East African Agriculture and Forestry Research Organization, Kenya Tecwyn Jones --- East African Agriculture and Forestry Research Organization, Kenya -
East African Contributions to the Eighth British Commonwealth Forestry Conference
Item type: Journal Article • Journal: East African Agricultural and Forestry Journal • Authors: Tecwyn Jones --- , Kenya, Uganda and Tanganyika -
Introduction
Item type: Journal Article • Journal: East African Agricultural and Forestry Journal • Authors: Tecwyn Jones --- E.A.A.F.R.O., Kenya -
The East African Forest Insect Survey (O.D.C. 453)
Item type: Journal Article • Journal: East African Agricultural and Forestry Journal • Authors: Tecwyn Jones --- E.A.A.F.R.O., Kenya W. Wilkinson --- E.A.A.F.R.O., KenyaA short resume is given of the history of forest entomology in East Africa. During the period 1957–61 the Forest Insect Survey progressed at a reduced rate due firstly to the hiatus after J. C. M. Gardner's retirement, and secondly... -
Recent Investigations of Two New Tree-Borers in the Indigenous Forests of East Africa (O.D.C. 453)
Item type: Journal Article • Journal: East African Agricultural and Forestry Journal • Authors: Tecwyn Jones --- E.A.A.F.R.O., KenyaIoberlinia scheffleri Harms is a common tree in the East Usambara Mountains of Tanganyika, and Parinari excelsa subsp. holstii is the dominant tree of the Kalinzu Forest and adjacent areas of Uganda. The utilization of these two species, however, is... -
Deterioration of Timber in use in East Africa and Its Prevention
Item type: Journal Article • Journal: East African Agricultural and Forestry Journal • Authors: Tecwyn Jones [AN0001] I. A. S. Gibson [AN0001] W. E. Smith [AN0002] -
The Present World Situation in Regard to the Spread of Internationally Dangerous Forest Insects
Item type: Journal Article • Journal: East African Agricultural and Forestry Journal • Authors: Tecwyn Jones --- E.A.A.F.R.O., Kenya -
Combat readiness: Perceived influences on willingness to deploy
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Zingcwengile Nkewu --- Department of Industrial Psychology, Faculty of Military Sciences, South Africa Gideon Van Dyk --- Department of Industrial Psychology, Faculty of Military Sciences, South AfricaThis study investigated the association between combat readiness and soldiers’ willingness to deploy in operations. Participants were 465 members of the South African National Defence Force (SANDF) (males, 84%). The solders self-reported their perceived combat readiness (PCR) and willingness to... -
Sources of fish in the ephemeral western iishana region of the Cuvelai–Etosha Basin in Angola and Namibia
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: MHT Hipondoka --- Department of Geography, History and Environmental Studies, Namibia BCW van der Waal --- Department of Zoology, South Africa MH Ndeutapo --- Independent Researcher, Angola L Hango --- Ministry of Agriculture, Water and Forestry, Department of Water Affairs and Forestry, NamibiaThe triangle between the Kavango and Kunene rivers is drained by the Cuvelai, an ephemeral and deltaic drainage system covering more than 100 000 km2. In good rainfall years, the area becomes populated by fish communities dominated by five species... -
The introduction, spread and ecology of redclaw crayfish Cherax quadricarinatus in the Zambezi catchment
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: RJ Douthwaite --- Kafue River Trust, Holly Oast, United Kingdom EW Jones --- 3 Cwm Arthur, Myddleton Park, United Kingdom AB Tyser --- Kafue River Trust, Holly Oast, United Kingdom SM Vrdoljak --- Wildtracks Lodge, ZambiaTwo of the four crayfish species brought to Zambia for aquaculture since 1979 are now naturalised. Procamburus clarkii occurs in the Maramba River at Livingstone, close to a former fish farm, whereas Cherax quadricarinatus, deliberately introduced to a number of... -
Contrasting patterns in the abundance of fish communities targeted by fishers on two coral reefs in southern Mozambique
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: T Sancelme --- Australian Institute of Marine Science, Indian Ocean Marine Research Centre, Australia J Goetze --- Global FinPrint Project, Australia S Jaquemet --- Université de La Réunion, UMR 9220 ENTROPIE [Tropical Marine Ecology Laboratory], Réunion MG Meekan --- Australian Institute of Marine Science, Indian Ocean Marine Research Centre, Australia A Flam --- Marine Megafauna Foundation, Marine Megafauna Research Center, Mozambique AM Watts --- Marine Megafauna Foundation, Marine Megafauna Research Center, Mozambique CW Speed --- Australian Institute of Marine Science, Indian Ocean Marine Research Centre, AustraliaCoastal populations of maritime countries in eastern Africa rely on fish as a primary source of protein, but baseline information on the abundance of fish communities on these coastlines is often lacking. We used baited remote underwater video stations to... -
A characterisation of wetland soil types on the Maputaland Coastal Plain
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: ML Pretorius --- , CW van Huyssteen --- , LR Brown --- , AT Grundling --- , CT Downs --- ,This paper addresses the shortage of wetland soil data on the Maputaland Coastal Plain. It does so by investigating the relationship between wetland types, slope position and soil properties. Four wetland types (a valley-bottom system, perched pans, hygrophilous grasslands and... -
Organic carbon content in the diagnostic horizons and materials of South African soil forms
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: CW van Huyssteen --- , South Africa NR Rantoa --- , South Africa CC du Preez --- , South AfricaSoil classification aims to group similar soils to facilitate communication and management. Management of soil organic carbon is gaining international recognition in an attempt to manage atmospheric carbon in addressing global warming. This paper explored the soil morphological and analytical... -
Strengthening intermediaries in the National System of Innovation (NSI): Case of the South African Council for Natural Scientific Professions
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Bongiwe Mncwango --- , South Africa Samuel Fongwa --- , South AfricaThis paper uses the National System of Innovation (NSI) framework to interrogate the role of professional organizations as intermediaries within the South African NSI. Using the case of the South African Council for Natural Scientific Professions (SACNASP), we explore the... -
Gender stereotyping in Indlela yababi and Kuxolelwa abanjani?: a corpus linguistics approach
Item type: Journal Article • Journal: South African Journal of African Languages • Authors: Lungile Mncwango --- University of Pretoria, South Africa Jacomien van Niekerk --- University of Pretoria, South Africa Elsabé Taljard --- University of Pretoria, South AfricaIn this article, we use corpus linguistics and critical discourse analysis to examine gender stereotyping in three isiZulu novels, namely Indlela yababi (‘The path of the wicked’) by RRR Dhlomo, Inkinsela yaseMgungundlovu (‘The tycoon of Pietermaritzburg’) by CLS Nyembezi, and... -
The interplay of verbal cinematic, balletic and pantomimic manifestations in isiZulu literary narratives
Item type: Journal Article • Journal: South African Journal of African Languages • Authors: Sicelo Ziphozonke Ntshangase --- Language and Arts, University of KwaZulu-Natal, South Africa Lungile Mncwango --- University of Pretoria, South AfricaThere is a dearth of studies that analyse the discourse of isiZulu literature. Most studies focus on the actual story, which is the chain of events and its setting. However, discourse, which is how the story is narrated, is frequently... -
A morpho-syntactic analysis of qualifiers in Bantu languages
Item type: Journal Article • Journal: South African Journal of African Languages • Authors: Rivalani Xenon Masonto --- University of Zululand, South Africa Elliot Mthembeni Mncwango --- University of Zululand, South AfricaThe aim of this article is to comparatively analyse qualifiers in Bantu languages for structural positioning and syntactic functions. It focuses specifically on Xitsonga, isiZulu, Northern Sotho, and Swahili. Qualitative methods were employed. Data were collected through interviews and document...