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THE DISTRIBUTION AND ECOLOGY OF TWO MULLET SPECIES IN SOME FRESH WATER RIVERS IN THE EASTERN CAPE, SOUTH AFRICA
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: A.H. Bok --- Department of Nature and Environmental Conservation, South AfricaData on the relative abundance, penetration and breeding biology of the freshwater mullet Mugil cephalus and the flathead mullet Mugil cephalus in the freshwater reaches of some Eastern Cape coastal rivers are described. The differences found between the two species... -
DECOMPOSITION IN FRESHWATER ECOSYSTEMS
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: R.D. Robarts --- , South AfricaThis review examines the sources and composition of organic matter and the decomposition of particulate and dissolved organic matter (POM and DOM) in freshwater ecosystems. The main points to emerge from the review are listed below. -
Fluvial Sediment Yield to the Natal Coast: A Review
Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: S. M'Cormick --- , South Africa J. A.G. Cooper --- , South Africa T.R. Mason --- Marine Geoscience Unit, South AfricaSediment yield is the quantitative expression of soil eroded from the hinterland and deposited in the ocean. This paper reviews existing literature available on sediment yields, particularly for the Natal coast, South Africa. Several authors have attempted to quantify the... -
SOME OBSERVATIONS ON THE FISH LIFE IN A SEASONAL SAND RIVER
Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: B. C.W. van der Waal --- , , South AfricaFive fish species were collected in a seasonal sand river that had migrated upstream more than 150 km from the permanent Limpopo River. The population structure indicated that mainly juveniles had taken part in this colonisation. No fish were collected... -
VARIABILITY IN THE INVERTEBRATE FAUNA OF AN INTERMITTENT STREAM OVER THREE CONSECUTIVE MIDSUMMER PERIODS
Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: M. C. Uys --- , South Africa J. H. O'Keeffe --- , South AfricaNon-perennial rivers in semi-arid regions are exposed to unpredictable and highly variable rainfall and hydrology which can have considerable effects on faunal organisation at different scales. Spatial and temporal dynamics in the aquatic invertebrate fauna of an aseasonal intermittent river... -
MANAGEMENT, CONSERVATION AND RESEARCH OF INTERNATIONALLY SHARED WATERCOURSES IN SOUTIIERN AFRICA—NAMIBIAN EXPERIENCE WITH THE OKAVANGO RIVER AND RIVERS OF THE EASTERN CAPRIVI
Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: E. D. Taylor --- , England S. Bethune --- , NamibiaAlthough the emphasis of the recent National Rivers Research Initiative (now the Research Programme for the Management of Rivers) in South Africa was on river research in that country, the reality is that in southern Africa many watercourses are shared... -
Neglected older women and men: Exploring age and gender as structural drivers of HIV among people aged over 60 in Uganda
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Esther Richards --- Liverpool School of Tropical Medicine, UK Flavia Zalwango --- Medical Research Council/Uganda Virus Research Institute (MRC/UVRI) Uganda Research Unit on AIDS, Uganda Janet Seeley --- Medical Research Council/Uganda Virus Research Institute (MRC/UVRI) Uganda Research Unit on AIDS, Uganda Francien Scholten --- Medical Research Council/Uganda Virus Research Institute (MRC/UVRI) Uganda Research Unit on AIDS, Uganda Sally Theobald --- Liverpool School of Tropical Medicine, UKThis study explored how women's and men's gendered experiences from childhood to old age have shaped their vulnerability in relation to HIV both in terms of their individual risk of HIV and their access to and experiences of HIV services... -
Gill damage, metallothionein gene expression and metal accumulation in Tilapia sparrmanii from selected field sites at Rustenburg and Potchefstroom, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Daléne van Heerden Peet Jansen van Rensburg Mikko Nikinmaa André VoslooFish were collected from field sites in the mining and agricultural areas of Potchefstroom and Rustenburg, North-West Province, South Africa. Water and sediment samples from each site, together with fish muscle and gills, were analysed by Inductively Coupled Plasma Mass... -
The South African Scoring System (SASS) Version 5 Rapid Bioassessment Method for Rivers
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: C WS Dickens --- , South Africa PM Graham --- , South AfricaThe assessment of biota in rivers is a widely recognised means of determining the condition or ‘health’ of rivers. Benthic macroinvertebrates, in particular, are recognised as valuable organisms for bioassessments, due largely to their visibility to the naked eye, ease... -
Turnover patterns in fish versus macroinvertebrates — implications for conservation planning
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: NA Rivers-Moore --- School of Agricultural, Earth and Environmental Sciences, South AfricaSpatial patterns in taxonomic richness and turnover for fish and aquatic macroinvertebrates are compared to assess the relative usefulness of each taxonomic group in mapping biodiversity patterns. Fish and aquatic macroinvertebrate species data for sites down the longitudinal axes of... -
Relationship between water temperature predictability and aquatic macroinvertebrate assemblages in two South African streams
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: BR Eady --- Discipline of Geography, School of Agricultural, Earth and Environmental Sciences, South Africa NA Rivers-Moore --- Centre for Water Resources Research, South Africa TR Hill --- Discipline of Geography, School of Agricultural, Earth and Environmental Sciences, South AfricaVariable seasonal stream temperatures are a critical factor in maintaining aquatic invertebrate community patterns. We investigated whether the degree of predictability in a stream's water temperature profile provides insights into the structure and functional predictability of macroinvertebrate communities. Quarterly macroinvertebrate... -
Seasonal occurrence, distribution and diversity of phytoplankton in the Douala Estuary, Cameroon
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: AB Fonge --- Department of Botany and Plant Physiology, Cameroon BG Chuyong --- Department of Botany and Plant Physiology, Cameroon AS Tening --- Department of Chemistry, Cameroon AC Fobid --- Department of Botany and Plant Physiology, Cameroon NF Numbisi --- Department of Botany and Plant Physiology, CameroonThe occurrence and abundance of phytoplankton in the Wouri and Dibamba rivers and the Douala Estuary and their relationships to physico-chemical conditions were studied during the wet and dry seasons of 2008. One-hundred-and-sixty-eight species belonging to 67 genera were identified... -
A Conceptual Framework for Implementing Sustainable Livelihoods and Innovation in Biofuel Production among Smallholder Farmers
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Chipo Nyamwena-Mukonza --- , South AfricaThere has been renewed interest in biofuel production globally as a response to the continuous increase in oil prices, the depletion of fossil fuels and as nations move towards a low carbon economy. The paper is a work in progress... -
Dry season fish survival in isolated pools and within sand-beds in the Mzingwane River, Zimbabwe
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: JohnL MinshullFour isolated pools in the otherwise dry Mzingwane River, Zimbabwe, were sampled in December 1985 and a total of 4 547 specimens of 23 species were collected. The dominant species, by number, were Chiloglanis paratus, followed by Barbus toppini, Mesobola... -
Effect of an impoundment on nutrient dynamics in the Kihansi River, Tanzania
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: RJ Ideva J Machiwa F Schiemer T HeinThe impact of the Kihansi Dam on electrical conductivity, pH, temperature and dissolved oxygen in the Kihansi River was assessed in 2005 after 85% of the original river flow had been diverted to the Lower Kihansi power plant. The results... -
Comparing internal and external drivers in the southern Benguela and the southern and northern Humboldt upwelling ecosystems
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: LJ Shannon S Neira M TaylorTrophic models of three upwelling ecosystems, the southern Benguela (South African), southern Humboldt (Chilean) and northern Humboldt (Peruvian) systems, have been fitted to catch, abundance and fishing mortality time-series. Three drivers were considered during the model fitting: internal forcing by... -
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... -
Repositioning agricultural development in Africa through appropriate technology transfer
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Okey F Obi --- Agricultural and Bioresources Engineering Department, Faculty of Engineering, Nigeria Joel N Nwakaire --- Agricultural and Bioresources Engineering Department, Faculty of Engineering, NigeriaThe advancement in agricultural technology frontiers over time has resulted in continuous upward shifts in the production, distribution and consumption of agricultural produce worldwide. Such dramatic shifts in the technology frontier have increased the technology gap between countries and regions... -
Water and habitat quality assessment in the Honi and Naro Moru rivers, Kenya, using benthic macroinvertebrate assemblages and qualitative habitat scores
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: JG Mbaka --- Department of Biological Sciences, Kenya CM M'Erimba --- Department of Biological Sciences, Kenya HK Thiongo --- Department of Natural Resources, Kenya JM Mathooko --- Global Research Akademik and Mentoring Services, KenyaAn assessment of water and habitat quality, based on macroinvertebrate assemblage indices and qualitative habitat scores (QHS), was undertaken in the Honi and Naro Moru rivers, Kenya, in 2011. The two rivers are important as water sources for the local... -
Conservation status and distribution of freshwater fishes in South African national parks
Item type: Journal Article • Journal: African Zoology • Authors: I. A. Russell --- South African National Parks, South AfricaThirteen of South Africa’s national parks contain aquatic systems which support 63 indigenous and 11 alien freshwater fishes. Indigenous fishes include 43 species of the Zambezian faunal group (70% of the national total), eight Karroid (47%), five Cape (31%) and... -
Do deterministic processes influence the phenotypic patterns of animalivorous bat ensembles at urban rivers?
Item type: Journal Article • Journal: African Zoology • Authors: M. Corrie Schoeman --- School of Biological and Conservation Sciences, University of KwaZulu-Natal, Westville Campus, South Africa Kirby J. Waddington --- School of Biological and Conservation Sciences, University of KwaZulu-Natal, Westville Campus, South AfricaAlthough urbanization is perhaps the most damaging, persistent, and rapidly expanding form of anthropogenic pressure on natural ecosystems, data on the patterns and processes of sympatric bat species in urban landscapes are relatively scant. We quantified the packing and dispersion... -
Imagine staying in a Shanghai hotel bedroom in 2050?
Item type: Journal Article • Journal: • Authors: Tan Li Yu Rebecca --- Victoria Management School, PO Box 600, Wellington 6135, New Zealand Ian Yeoman --- Victoria Management School, PO Box 600, Wellington 6135, New ZealandWill the future hotels of Shanghai emphasise a world of contemporary design, sustainability and technological innovations in order to deal +with the growing pains of pollution, competition of urban land and decreasing availability of clean water, which will impact on... -
The truck driver's watch: time and the working lives of long haul truck drivers in southern Africa
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Adriaan S. Steyn --- Department of Sociology and Social Anthropology, South AfricaThe optimal use of time has shaped the organisation of productive activity in capitalist societies. This objective has similarly shaped labour in the truck transport industry. Drawing on mobile ethnographic fieldwork conducted amongst long haul truck drivers in southern Africa,... -
Dominance and population structure of freshwater crabs (Potamonautes perlatus Milne Edwards)
Item type: Journal Article • Journal: South African Journal of Zoology • Authors: M.J. Somers --- Department of Zoology, University of Stellenbosch, South Africa J.A.J. Nel --- Department of Zoology, University of Stellenbosch, South AfricaAlthough freshwater crabs, Potamonautes spp, are abundant (up to 23 crabs m-2) in southern African freshwater systems and form a major part of the diet of many vertebrates, little is known about their biology. Understanding crab population dynamics and behaviour,... -
The use of cash transfers for HIV prevention — are we there yet?
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Jessica Taaffe --- The World Bank Group, USA Nejma Cheikh --- The World Bank Group, USA David Wilson --- The World Bank Group, USAPoverty and social inequality are significant drivers of the HIV epidemic and are risk factors for acquiring HIV. As such, many individuals worldwide are at risk for new HIV infection, especially young women in East and Southern Africa. By addressing... -
Spatial characterisation of the Benguela ecosystem for ecosystem-based management
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: SP Kirkman --- Branch: Oceans and Coasts, Department of Environmental Affairs, South Africa L Blamey --- Marine Research Institute, South Africa T Lamont --- Branch: Oceans and Coasts, Department of Environmental Affairs, South Africa JG Field --- Marine Research Institute, South Africa G Bianchi --- Food and Agriculture Organization, Italy JA Huggett --- Branch: Oceans and Coasts, Department of Environmental Affairs, South Africa L Hutchings --- Marine Research Institute, South Africa J Jackson-Veitch --- Marine Research Institute, South Africa A Jarre --- Marine Research Institute, South Africa C Lett --- Institut de Recherche pour le Développement [IRD], UMR MARBEC 248, France MR Lipiński --- Department of Ichthyology and Fisheries Science, South Africa SW Mafwila --- Department of Fisheries and Aquatic Sciences, Namibia MC Pfaff --- Branch: Oceans and Coasts, Department of Environmental Affairs, South Africa T Samaai --- Branch: Oceans and Coasts, Department of Environmental Affairs, South Africa LJ Shannon --- Marine Research Institute, South Africa Y-J Shin --- Marine Research Institute, South Africa CD van der Lingen --- Marine Research Institute, South Africa D Yemane --- Marine Research Institute, South AfricaThe three countries of the Benguela Current Large Marine Ecosystem (BCLME), namely Angola, Namibia and South Africa, have committed to implementing ecosystem-based management (EBM) including an ecosystem approach to fisheries (EAF) in the region, to put in practice the principles... -
A qualitative study of migrant-related stressors, psychosocial outcomes and HIV risk behaviour among truck drivers in Zambia
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Lynn Murphy Michalopoulos --- School of Social Work, USA Nomagugu Ncube --- International Organization for Migration, Zambia Simona J. Simona --- Department of Social Development Studies, Zambia Brian Kansankala --- International Organization for Migration, Zambia Emmanuel Sinkala --- International Organization for Migration, Zambia Jasmin Raidoo --- School of Social Work, USATruck drivers are part of mobile populations which have been noted as a key population at risk of HIV in Zambia. This study was aimed at: (1) determining potentially traumatic events (PTEs), labour migrant-related stressors, psychosocial problems and HIV risk... -
Psychological career resources identity and life orientation among young emerging adults in a Nigerian setting
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Melinde Coetzee --- Department of Industrial and Organisational Psychology, Dries Schreuder --- Department of Industrial and Organisational Psychology,This study explored whether young emerging adults’ psychological career resources identity predicted their orientation to life. The participants were a random sample of 400 predominantly full-time undergraduate students from four tertiary institutions in Nigeria (47% = female; age range 18... -
Imagine staying in a Shanghai hotel bedroom in 2050?
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Tan Li Yu Rebecca --- Victoria Management School, New Zealand Ian Yeoman --- Victoria Management School, New ZealandWill the future hotels of Shanghai emphasise a world of contemporary design, sustainability and technological innovations in order to deal with the growing pains of pollution, competition of urban land and decreasing availability of clean water, which will impact on... -
The abundance of an invasive freshwater snail Tarebia granifera (Lamarck, 1822) in the Nseleni River, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: RW Jones --- Department of Zoology and Entomology, South Africa JM Hill --- Department of Zoology and Entomology, South Africa JA Coetzee --- Department of Botany, South Africa TS Avery --- Department of Biology and Mathematics & Statistics, Canada OLF Weyl --- Centre for Invasion Biology, South Africa MP Hill --- Department of Zoology and Entomology, South AfricaThe invasive freshwater snail Tarebia granifera (Lamarck, 1822) was first reported in South Africa in 1999 and it has become widespread across the country, with some evidence to suggest that it reduces benthic macroinvertebrate biodiversity. The current study aimed to... -
Deforestation since independence: a quantitative assessment of four decades of land-cover change in Malawi
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Rachel A Bone --- Centre for Environmental Sciences, Faculty of Engineering and the Environment, UK Kate E Parks --- Centre for Environmental Sciences, Faculty of Engineering and the Environment, UK Malcolm D Hudson --- Centre for Environmental Sciences, Faculty of Engineering and the Environment, UK Mathews Tsirinzeni --- LEAD Southern and Eastern Africa, Chancellor College, Malawi Simon Willcock --- Centre for Biological Sciences, Faculty of Natural and Environmental Sciences, UKLand cover has changed rapidly across the tropics over the past century; however, detailed historical information describing the extent and possible drivers of such change is widely lacking. Here, we constructed a history of land-cover change at the district level... -
Towards an understanding of the commercialization drivers of research findings in Iran
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Leila Namdarian --- Department of Information Policy, Society and Information Faculty, Iran Ali Naimi-Sadigh --- Department of e-Business, Information Technology Faculty, IranTaking a look at the performance of Iranian universities and research centres, one might notice that despite their Research and Development (R&D) capacities, most have fallen short in research commercialization, leaving them dependent on government funding. Hence, certain mechanisms should... -
Biodiversity and ecology of epilithic diatoms in the Agnéby River, Ivory Coast
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: KR N’Guessan --- Laboratoire d’Hydrobiologie et d’Éco-technologie des Eaux-U.F.R, Côte d’Ivoire BRD Aboua --- Laboratoire d’Hydrobiologie et d’Éco-technologie des Eaux-U.F.R, Côte d’Ivoire J Tison-Rosebery --- Irstea-ur eabx, France A Ouattara --- Laboratoire d’Environnement et de Biologie Aquatique, UFR-Sciences et Gestion de l’Environnement, Côte d’Ivoire EP Kouamelan --- Laboratoire d’Hydrobiologie et d’Éco-technologie des Eaux-U.F.R, Côte d’IvoireThe ecology and taxonomy of the epilithic diatom flora of the Agnéby River, Ivory Coast were studied in 2012. Ten sites were investigated and diatoms were sampled on glass slides immersed for a period of 30 days during the wet... -
A review of the influence of municipal sustainable supply chain management on South Africa’s recycling performance
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Fannie Machete --- College of Agriculture and Environmental Sciences, South AfricaThis paper reviews the influence of municipal sustainable chain management on South Africa’s recycling performance. In this study, municipal supply chain management systems are identified as one of the major factors that influence the lack of municipal solid waste services... -
The Role of Gender and Other Socioeconomic Factors in the Adoption of the Contagious Bovine Pleuropneumonia Vaccine: A Literature Review
Item type: Journal Article • Journal: East African Agricultural and Forestry Journal • Authors: Elizabeth Waithanji --- Independent gender consultant, Salome Wanjira Kairu-Wanyoike --- Deputy Director Veterinary Services, Department of Livestock, Kenya Millicent Liani --- Centre for Capacity Research, United KingdomThis paper looks at the role of gender and other socioeconomic factors in the adoption of the contagious bovine pleuropneumonia (CBPP) vaccine in response to three research questions: What gender and socioeconomic factors affect the adoption of the CBPP vaccine?... -
The measurement and potential drivers of integrated report quality: Evidence from a pioneer in integrated reporting
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: Arson Malola --- School of Accountancy, University of the Witwatersrand, South Africa Warren Maroun --- School of Accountancy, University of the Witwatersrand, South AfricaThis paper develops a measure for integrated report quality and explores possible drivers of high-quality reporting considering a sample of large listed companies in 2015 and 2016. Data are collected from South Africa where integrated reporting has been established for... -
Diet of catfish Clarias buthupogon Sauvage, 1879 (Clariidae) in two rivers in the Yoko Reserve, Tshopo Province, Democratic Republic of the Congo
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: RB Mahamba --- Department of Phytotechnics, Democratic Republic of the Congo JN Ndjaki --- Department of Hydrobiology, Democratic Republic of the Congo AB Kankonda --- Department of Hydrobiology, Democratic Republic of the Congo J-C Micha --- Environmental Biology Research Unit (URBE), BelgiumThe diet of the catfish, Clarias buthupogon, was studied in two forest rivers in the Yoko Reserve, the Yoko and Biaro Rivers, from September 2008 to August 2009. Gill nets, long lines and traditional traps were used to catch the... -
Continuous intention to use mobile money (MM) services: Driving factors among small and medium-sized tourism and hospitality enterprises (SMTHEs)
Item type: Journal Article • Journal: Africa Journal of Management • Authors: Frederick Dayour --- , Ghana Charles A. Adongo --- , Ghana Elizabeth Agyeiwaah --- , People’s Republic of ChinaMobile money (known popularly as “MOMO” in Ghana) usage has become common in Africa. However, the driving factors explaining the continuous use of such services among small and medium-sized tourism and hospitality enterprises (SMTHEs) is still unknown. This study examines... -
Promoting rainwater harvesting for improving water security: Analysis of drivers and barriers in Ghana
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Mavis Akuffobea-Essilfie --- , Ghana Portia Adade Williams --- , Ghana Roland Asare --- , Ghana Sigrid Damman --- , Norway George Owusu Essegbey --- , GhanaThe study explored strategies and means of achieving wider acceptability and adoption of roof rainwater harvesting (RWH) systems in Ghana to improve water security and availability. The paper employed a qualitative approach in analyzing views expressed by a wide range... -
Patch-scale selection patterns of grazing herbivores in the central basalt plains of Kruger National Park
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Cyanne Young --- , South Africa Hervé Fritz --- , South Africa Erica AH Smithwick --- , United States of America Jan A Venter --- , South AfricaLarge herbivores form an essential component in the ecosystem, because of the impact that they have on their surrounding habitat. In this study, we aimed to evaluate some of the mechanisms behind how herbivores select forage at a patch scale... -
Applying a social-ecological lens to opinions about HIV self-testing among Kenyan truckers who declined to test: a qualitative study
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Stephanie N Christian --- , USA Joanne E Mantell --- , USA Matthew L Romo --- , USA Christian Grov --- , USA Gavin George --- , South Africa Eva Mwai --- , Kenya Eston Nyaga --- , Kenya Jacob O Odhiambo --- , Kenya Kaymarlin Govender --- , South Africa Elizabeth A Kelvin --- , USAHIV prevalence among truckers in Africa is high and testing rates suboptimal. With numerous African countries having approved HIV self-testing kits, more information on how to design acceptable and accessible self-testing programs for high-risk populations is necessary. We explored views... -
Spectral classification, mapping and physical habitat implications of a riparian invasion by Tamarix ramosissima Ledeb. in the Touws River, Klein Karoo, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: MC Grenfell --- , South Africa TI Dube --- , South AfricaThis paper investigates the invasion of a reach of the Touws River by the deciduous alien tree Tamarix ramosissima Ledeb. (Pink Tamarisk, Saltcedar). The objectives of the paper were to investigate the utility of a delta-normalised difference vegetation index (dNDVI)... -
Drivers of periphyton biomass in south-western Cape rivers, South Africa, and the implications for management
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: JL Ewart-Smith --- , South AfricaIn open-canopied temperate rivers, periphyton plays a pivotal role by converting dissolved nutrients into food for biota. International research suggests that periphyton is particularly responsive to flow and nutrient alterations and therefore ideally suited to aiding the prediction and monitoring... -
The contribution and value of the trait-based approach to water resource protection
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Oghenekaro Nelson Odume --- , South AfricaFreshwater is one of the Earth’s most crucial resources for social-economic development and prosperity. Biomonitoring contributes to water resource protection by integrating a holistic picture of ecosystem health through an analysis of resident biota. The taxonomy-based approach, in which taxa... -
Factors driving business model innovation in sample case studies in South Africa
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Ignitia Motjolopane --- , South Africa Ephias Ruhode --- , South AfricaIn an environment of changing customer needs, technological advancement and digitization, the importance of business model innovation in supporting companies to accrue benefits from increased digitization while counteracting threats has intensified. Factors driving business model innovation could be of value... -
Taxi ‘sugar daddies’ and taxi queens: Male taxi driver attitudes regarding transactional relationships in the Western Cape, South Africa
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Cheryl Potgieter [d53e18] Anna Strebel Tamara Shefer Claire WagnerMedia reports are emerging on the phenomenon of young girls who travel with older mini-bus taxi drivers, and who are thought to have sex with the drivers in exchange for gifts and money. The extent to which such relationships might... -
Kwazulu-Natal minibus taxi drivers' perceptions on HIV and AIDS: Transmission, prevention, support and effects on the industry
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Gugu Mchunu [d44e18] Busisiwe Ncama Joanne Rachel Naidoo Sisana Majeke Thandazile Myeza Thandiwe Ndebele Padmini PillayIn South Africa, the minibus taxi drivers are largely becoming another high-risk category in the HIV and AIDS epidemic. Although previous studies have shown that knowledge of HIV and AIDS is relatively high among the taxi drivers it is still... -
Psychosocial factors predicting risky sexual behaviour among long distance truck drivers in Lagos, Nigeria
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Abiodun Musbau Lawal --- , , Nigeria Benjamin Oladapo Olley --- , , NigeriaLong distance truck drivers (LDTDs) have been identified as one of the groups at higher risk for human immunodeficiency virus (HIV) infection. Understanding how certain social and psychological variables that have a strong theoretical basis contribute to sexual risk behaviour... -
Development of new assessment approach: a macroinvertebrates-based biotic scoring system to assess the health of riverine ecosystems in the Sahel area in Burkina Faso (West Africa)
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: I Kaboré --- Université Joseph KI-ZERBO, Burkina Faso L Sawadogo --- Université Joseph KI-ZERBO, Burkina Faso V Bancé --- Université Joseph KI-ZERBO, Burkina Faso L Tampo --- University of Kara, Togo S Sanogo --- Université NAZI BONY de Bobo-Dioulasso, Burkina Faso A Ouéda --- Université Joseph KI-ZERBO, Burkina Faso O Moog --- University of Natural Resources and Life Sciences, Austria AH Melcher --- University of Natural Resources and Life Sciences, AustriaTo address ongoing threats from human pressures and climate changes, water managers and users require a visual tool that provides accurate information about the health of waterbodies for decision making. However, there is a lack of less sophisticated methods, such... -
Investigating drivers of information technology governance in South African public healthcare sector
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: John Mangundu --- University of the Witwatersrand, South Africa Osden Jokonya --- University of the Western Cape, South AfricaAs organizations continue to heavily invest in Information Technology (IT), effective information technology governance is critical to make sure that IT spending leads to the fulfilment of organizational goals and delivery of expected value. The purpose of this study is... -
Space and spatially structured environmental variables account for variation in blackfly and mayfly communities in sub-tropical South African rivers
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: PA Ramulifho --- University of South Africa, South Africa SH Foord --- University of Venda, South Africa NA Rivers-Moore --- University of KwaZulu-Natal, South AfricaUsing aquatic invertebrate assemblages for bioassessment of streams and rivers is a fast and cost-effective approach to studying the impact of environmental stressors in aquatic ecosystems. The use of aquatic invertebrates is premised on their predictable responses to environmental stressors... -
A review of the contribution of the Grassland Society of Southern Africa to understanding conservation and wildlife research and management in southern Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Mike JS Peel --- Agricultural Research Council – Animal Production Institute, South Africa Peter JK Zacharias --- , South AfricaWe identified 440 papers and 81 book reviews published chronologically by the Grassland Society of Southern Africa (GSSA) over 60 years, determined as making a contribution to understanding the drivers and response variables affecting the management and use of grassland... -
Fish community dynamics of seasonal rivers of the Incomati Basin, Kruger National Park, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: A Kaiser-Reichel --- School of Biology and Environmental Sciences, University of Mpumalanga, South Africa GC O’Brien --- Gulbali Institute, Charles Sturt University, Australia R Petersen --- Garden Route National Park, South Africa National Parks, South Africa TW Khoza --- School of Biology and Environmental Sciences, University of Mpumalanga, South Africa A Van der Merwe --- School of Biology and Environmental Sciences, University of Mpumalanga, South Africa E Riddell --- Kruger National Park, South Africa National Parks, South Africa N Smit --- Unit for Environmental Sciences and Management, North-West University, South Africa T Dalu --- School of Biology and Environmental Sciences, University of Mpumalanga, South AfricaSeasonal rivers play a critical role in shaping aquatic ecosystems and provide essential ecosystem services in freshwater systems. Due to a limited understanding of seasonal rivers and how ecological indicators such as fish communities are structured, it is important to...
