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TWENTY-FIVE YEARS OF TRICHOPTERA RESEARCH RELATING TO SOUTHERN AFRICA - A PERSONAL VIEW
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: K. M.F. Scott --- , South AfricaA brief account of earlier work on Trichoptera, reasons for choice of the Order, and resources built up, is followed by the story of twenty-five years of research, from 1963–1988. This includes aims in view, followed by the ‘state of... -
Landscape function analysis: a system for monitoring rangeland function
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: David Tongway Norman HindleyLandscape Function Analysis (LFA) is a monitoring procedure that uses quickly determined field indicators to assess the functional status of rangelands. As such, it complements existing procedures that assess condition. It comprises three modules — a conceptual framework, a field... -
Predictors of sexual behaviour among church-going youths in Nairobi, Kenya: a cross-denominational study
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Ann Neville Miller --- Nicholson School of Communication, United States Kyalo wa Ngula --- Nicholson School of Communication, United States George Musambira --- Nicholson School of Communication, United StatesWe surveyed church-going youths in Nairobi, Kenya, to investigate denominational differences in their sexual behaviour and to identify factors related to those differences. In comparison with youths attending mainline churches, the youths surveyed at Pentecostal/evangelical churches were less likely to... -
Application of the Indicators of Hydrological Alteration method to the Mkomazi River, KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: V Taylor --- , South Africa R Schulze --- , South Africa G Jewitt --- , South AfricaHydrological regimes play a major role in structuring the biotic diversity within river ecosystems and hydrological variation is recognised as a primary driving force within those ecosystems. The US Nature Conservancy developed a method known as the Indicators of Hydrological... -
Association between avian assemblages and mountain bushveld communities along a single mountain slope in the Usuthu Gorge, South Africa
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Gerard Malan --- Department of Nature Conservation, South Africa RionE Lerm --- Department of Nature Conservation, South AfricaThe study investigated the bird species diversity associated with vegetation communities found on a single mountain slope in the Usuthu Gorge Community Conservation Area, northern KwaZulu-Natal. Thirteen sample sites were surveyed on a monthly basis for 12 months. Over this... -
7. Problems in Using Vegetation or Soil Classification in Determining Site Quality
Item type: Journal Article • Journal: South African Forestry Journal • Authors: A. P.G. Schönau --- , South AfricaThis paper discusses the concepts of site and site quality and reviews briefly the determination of the latter. Site quality is viewed primarily as productive capacity of forest land, although other aspects are considered also. It is concluded that nowadays... -
Quantification and representation of potential spatial interactions in the southern Benguela ecosystem
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: L. Drapeau L. Pecquerie P. Fréon L. J. ShannonThis work explores the potential spatial interactions between 13 key commercial species of the southern Benguela ecosystem: sardine Sardinops sagax, anchovy Engraulis encrasicolus, round herring Etrumeus whiteheadi, horse mackerel Trachurus trachurus capensis, chub mackerel Scomber japonicus, chokka squid Loligo vulgaris... -
Review of indicators in fisheries management – a development perspective
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: P. Degnbol A. JarreA review of indicators for an ecosystem approach to fisheries management is presented, focusing on multispecies fisheries and limited resources for assessments and implementation, as often is the case in developing countries. Emphasizing the need to link indicators to management... -
Analysing environmental and fishing effects on a short-lived species stock: the dynamics of the octopus Octopus vulgaris population in Senegalese waters
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: M Thiaw --- , Sénégal D Gascuel --- , France D Thiao --- , Sénégal OT Thiaw --- , Sénégal D Jouffre --- , SénégalShort-lived species are extremely dependent on the seasonal and interannual variability of environmental conditions, and determining their stock status is often difficult. This study investigates the effects of environmental variability and fishing pressure on the stock of octopus Octopus vulgaris... -
Changes in population structure of the white grouper Epinephelus aeneus as a result of long-term overexploitation in Senegalese waters
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: W Ndiaye --- Institut Fondamental d'Afrique Noire-Cheikh Anta Diop [IFAN-CH. A. Diop], Laboratoire de Biologie et d'Ecologie des Poissons en Afrique de l'Ouest [LABEP-AO], Senegal M Thiaw --- Centre de Recherches Océanographiques de Dakar-Thiaroye [CRODT], Senegal K Diouf --- Institut Fondamental d'Afrique Noire-Cheikh Anta Diop [IFAN-CH. A. Diop], Laboratoire de Biologie et d'Ecologie des Poissons en Afrique de l'Ouest [LABEP-AO], Senegal P Ndiaye --- Institut Fondamental d'Afrique Noire-Cheikh Anta Diop [IFAN-CH. A. Diop], Laboratoire de Biologie et d'Ecologie des Poissons en Afrique de l'Ouest [LABEP-AO], Senegal OT Thiaw --- Graduate Institute of Fisheries and Aquaculture [IUPA], Senegal J Panfili --- Institut de recherche pour le développement [IRD], UMR 5119 Ecologie des systèmes marins côtiers [ECOSYM], SenegalIn Senegal, a significant decrease in catches indicates that many demersal fish stocks are being overexploited. The white grouper Epinephelus aeneus, locally known as the ‘thiof’, is exploited by both small-scale and industrial fisheries. A 28-year database of E. aeneus... -
Government R&D Impact on the South African Macroeconomy
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Radhika Perrot --- Mapungubwe Institute for Strategic Reflection, South Africa (MISTRA) David Mosaka --- Beracah Consulting, South Africa Lefentse Nokaneng --- Beracah Consulting, South Africa Rita Sikhondze --- Wits Business School, Wits University, South AfricaThis article analyses the impact of government R&D on the macro-economy of South Africa. Most literature on the impact of R&D on the economy has been on advanced countries, where R&D expenditure as per cent of the GDP has been... -
Biological processes as indicators of sustainable plantation forestry
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: MaryC Scholes --- School of Animal, Plant and Environmental Sciences,This paper discusses the use of an ecosystems approach in the management of plantations and the concept of plantations in providing goods and services. Ecological indicators are compared for the CIFOR and South African systems. The CIFOR system focuses on... -
A review of management impacts on the soil productivity of South African commercial forestry plantations and the implications for multiple-rotation productivity
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Louis Titshall --- Institute for Commercial Forestry Research, South Africa Steven Dovey --- Institute for Commercial Forestry Research, South Africa Diana Rietz --- Institute for Commercial Forestry Research, South AfricaAn overview of southern African research that has investigated the impact of management practices that can potentially affect the long-term site productivity of plantations is presented, with an emphasis of these impacts on soil productivity and with the implications for... -
A preliminary benthic macroinvertebrate index of biotic integrity (B-IBI) for monitoring the Moiben River, Lake Victoria Basin, Kenya
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: FO Masese PO Raburu M MuchiriA Benthic Index of Biotic Integrity (B-IBI) was developed for the Moiben River. The index assesses effects of human disturbance on the biotic condition of stream macroinvertebrate communities. Eight stations were selected to represent different land-use types including forestry, settlement,... -
Macroinvertebrate assemblages as biological indicators of water quality in the Moiben River, Kenya
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: FO Masese M Muchiri PO RaburuBenthic macroinvertebrate assemblages at eight stations in the Moiben River, corresponding to different catchment land uses, were assessed in 2006 as indicators of water quality. The relative abundance per taxon, diversity index, richness index, evenness, dominance, percentage of five dominant... -
Development of fishery indicators for local management initiatives — a case study for Plettenberg Bay, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MKS Smith CM King WHH Sauer PD CowleyIn attempts to achieve sustainability, ecosystem-based approaches to fisheries management are becoming increasingly applicable. Indicators to assess the success of management measures are an important component of this approach. Data from a recreational linefishery are used to develop and propose... -
A conceptual tool for improving rangeland management decision-making at grassroots level: the local-level monitoring approach
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: K Kellner --- School of Environmental Sciences and Development, South Africa AS Moussa --- School of Environmental Sciences and Development, South AfricaFor many years, rangeland monitoring has mainly been the field of scientists, academics and extension workers trying to fine-tune methods to assess the condition of rangelands. Frameworks and monitoring systems developed with their associated indicators are often complex and inaccessible... -
Changes in the trophic structure, abundance and species diversity of exploited fish assemblages in the artisanal fisheries of the northern coast, Senegal, West Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: I Ndour --- Institut Sénégalais de Recherches Agricoles [ISRA]/Centre de Recherche Océanographique de Dakar-Thiaroye [CRODT], Sénégal F Le Loc'h --- Institut de Recherche pour le Développement [IRD], Laboratoire des sciences de l'Environnement Marin [UMR 6539 LEMAR] (Centre national de la recherche scientifique [CNRS], France J Kantoussan --- Université Gaston Berger [UGB], Sénégal M Thiaw --- Institut Sénégalais de Recherches Agricoles [ISRA]/Centre de Recherche Océanographique de Dakar-Thiaroye [CRODT], Sénégal HD Diadhiou --- Institut Sénégalais de Recherches Agricoles [ISRA]/Centre de Recherche Océanographique de Dakar-Thiaroye [CRODT], Sénégal JM Ecoutin --- Institut de Recherche pour le Développement [IRD], Sénégal L Tito de Morais --- Institut de Recherche pour le Développement [IRD], Laboratoire des sciences de l'Environnement Marin [UMR 6539 LEMAR] (Centre national de la recherche scientifique [CNRS], France OT Thiaw --- L'Institut Universitaire de Pêche et d'Aquaculture [IUPA], SénégalThis work investigates the effects of changes in both fishing pressure and the environment on the trophic dynamics, abundance and diversity of species in the artisanal commercial fisheries off the northern coast of Senegal. Using artisanal commercial fishing data (provided... -
Water quality dynamics in the Boro-Thamalakane-Boteti river system, northern Botswana
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: G Tubatsi --- Okavango Research Institute, Botswana MC Bonyongo --- Okavango Research Institute, Botswana M Gondwe --- Okavango Research Institute, BotswanaThe quality of water in aquatic systems is subject to temporal and spatial variations due to varying effects of natural and anthropogenic factors. This study assessed the dynamics of water quality in the Boro-Thamalakane-Boteti river system along an upstream–downstream gradient... -
Ecosystem modelling in the southern Benguela: comparisons of Atlantis, Ecopath with Ecosim, and OSMOSE under fishing scenarios
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MD Smith --- Department of Zoology, Australia EA Fulton --- CSIRO [Commonwealth Scientific and Industrial Research Organisation], Australia RW Day --- Department of Zoology, Australia LJ Shannon --- Marine Research Institute and Department of Biological Sciences, South Africa Y-J Shin --- Marine Research Institute and Department of Biological Sciences, South AfricaEcosystem-based management of marine fisheries requires the use of simulation modelling to investigate the system-level impact of candidate fisheries management strategies. However, testing of fundamental assumptions such as system structure or process formulations is rarely done. In this study, we... -
The application of the agricultural innovation system approach in technology development in Tanzania: researchers' perceptions and practices
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Athman H. Mgumia --- Tanzania Commission for Science and Technology, Tanzania Amon Z. Mattee --- Department of Agricultural Education and Extension, Tanzania Beatus A.T. Kundi --- Department of Mechanical & Industrial Engineering, TanzaniaThis paper examines the perceptions of researchers towards features of the innovation system approach. It also examines the extent of incorporation of these features into Tanzania's existing National Agricultural Research System (NARS). Both qualitative and quantitative data were collected from... -
Characteristics and landcover of estuarine boundaries: implications for the delineation of the South African estuarine functional zone
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: DA Veldkornet --- Department of Botany, South Africa JB Adams --- Department of Botany, South Africa L van Niekerk --- Department of Botany, South AfricaThis study investigated whether the current lateral boundary for estuaries in South Africa, i.e. the estuarine functional zone (EFZ), includes all estuarine habitats. The EFZ covers 173 930 ha in 304 estuaries/outlets nationally. Field surveys and analysis of available aerial... -
Changes in the algal composition and water quality of the Sundays River, Karoo, South Africa, from source to estuary
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: S Janse van Vuuren --- Unit for Environmental Sciences and Management, South Africa JC Taylor --- Unit for Environmental Sciences and Management, South AfricaA first survey was done on algae present in the Sundays River from its source to its confluence with the sea. Species found in the upstream sections of the river included indicators of good water quality, but the quality deteriorated... -
Structure and dynamics of demersal fish assemblages over three decades (1985–2012) of increasing fishing pressure in Guinea
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: ML Camara --- Centre National des Science Halieutiques de Boussoura (CNSHB), Republic of Guinea B Mérigot --- Université de Montpellier, France F Leprieur --- Université de Montpellier, France JA Tomasini --- Université de Montpellier, France I Diallo --- Centre National des Science Halieutiques de Boussoura (CNSHB), Republic of Guinea M Diallo --- Centre National des Science Halieutiques de Boussoura (CNSHB), Republic of Guinea D Jouffre --- Institut de Recherche pour le Développement, SenegalIn a context of growing fishing pressures and recommendations for an ecosystem approach to fisheries, there is a need to monitor changes in fish communities over time. In this study, we analysed data from scientific trawl surveys carried out on... -
Wetland hydrology indicators of Maluti Mountains wetlands in Lesotho
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Botle E Mapeshoane --- Department of Soil, Crop and Climate Sciences, South Africa Cornelius W van Huyssteen --- Department of Soil, Crop and Climate Sciences, South AfricaHydric soil morphological features are generally accepted to be reliable indicators of wetland hydrology. The relationship between soil water saturation and soil morphological indices is evaluated in this study from bi-weekly water level data taken over a period of two... -
Monitoring the recovery of a previously exploited surf-zone fish community in the St Lucia Marine Reserve, South Africa, using a no-take sanctuary area as a benchmark
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: BQ Mann --- Oceanographic Research Institute, South Africa H Winker --- South African National Biodiversity Institute, South Africa JQ Maggs --- Oceanographic Research Institute, South Africa SN Porter --- Oceanographic Research Institute, South AfricaLimiting accessibility to a fishing area can reduce fishing effort effectively and may therefore promote local recovery of depleted stocks. In January 2002, beach driving was banned in South Africa, thereby reducing angler access to large areas of the coastline,... -
Conceptualizing and institutions facilitating ‘use’ of innovation indicators in South Africa’s science, technology and innovation policymaking
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Albert Edgar Manyuchi --- Global Change Institute, South AfricaThis paper attempts to simplify and conceptualize the meaning of ‘use’ of innovation indicators in science, technology and innovation (STI) policymaking. The paper provides a conceptual framework that guides analysis of innovation indicators ‘use’ in STI policymaking. It maps the... -
A multimetric-index approach using fisheries data to assess fish assemblage structure in relation to salinity gradient in a tropical West African estuary
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: J Kantoussan --- Université Gaston Berger de Saint-Louis, Senegal JM Ecoutin --- Institut de Recherche pour le Développement (IRD), France R Laë --- Institut de Recherche pour le Développement (IRD), France OT Thiaw --- Institut Universitaire de Pêche et d’Aquaculture (IUPA), Université Cheikh Anta Diop de Dakar, Senegal L Tito de Morais --- Institut de Recherche pour le Développement (IRD), FranceThis study examines the effects of increasing salinity on fish assemblage structure in the Casamance Estuary, Senegal, using a series of indices. The study data were derived from commercial fishery surveys conducted between April and July 2005. Analysis of within-trophic-group... -
Adult malnutrition: prevalence and use of nutrition-related quality indicators in South African public-sector hospitals
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Esmarie van Tonder --- Department of Dietetics, School of Lifestyle Science, South Africa Lynn Gardner --- Department of Health, Health Centre, South Africa Saskia Cressey --- Department of Health, South Africa Reinette Tydeman-Edwards --- Department of Health, South Africa Karin Gerber --- Nursing Science Department, South AfricaObjectives: The aim of this study was to describe the prevalence of malnutrition among adult hospitalised patients in three South African public hospitals and to determine the availability of nutrition-related quality indicators at ward and institutional level. -
Evaluation of the early warning indicators of HIV drug resistance surveillance system in Manicaland province, Zimbabwe
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Anesu Marume --- Department of Community Medicine, College of Health Sciences, Zimbabwe Admire Zikiti --- Department of Community Medicine, College of Health Sciences, Zimbabwe Byron Chapoterera --- Department of Community Medicine, College of Health Sciences, Zimbabwe Julita Maradzika --- Department of Community Medicine, College of Health Sciences, ZimbabweMore than 1.1 million people currently receive lifelong antiretroviral treatment in Zimbabwe following the adoption of the test and treat strategy in 2017. The huge numbers of people on antiretroviral therapy (ART), combined with HIV’s error-prone replication, increases the probability... -
Sustainable indicators for adventure tourism destinations: A case of Waterval Boven
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Ndivhuwo Tshipala --- Centre for Sustainable Tourism, Department of Tourism Management, South Africa Willem Johannes Coetzee --- Department of Tourism, New Zealand Marius Potgieter --- Department of Marketing, South AfricaIn South Africa and around the world, the development of sustainable tourism indicators has been advocated by many authors and has resulted in a number of indicators. Indicators are distinguished by factors such as social, environmental as well as economic... -
Correlates of physical activity among adults with anxiety symptoms in South Africa
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Supa Pengpid --- ASEAN Institute for Health Development, Thailand Karl Peltzer --- Deputy Vice Chancellor Research and Innovation Office, South AfricaThe present study aimed to assess the correlates of low physical activity in adults with anxiety in South Africa. Data from the South African National Health and Nutrition Examination Survey (a cross-sectional survey in 2012) were utilised. The sample included... -
Comparing feeding niche, growth characteristics and exploitation level of the giraffe catfish Auchenoglanis occidentalis (Valenciennes, 1775) in the two largest artificial lakes of northern Ghana
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: SM Abobi --- Faculty of Biology (FB2), Germany JW Oyiadzo --- Department of Fisheries and Aquatic Resources Management, Ghana M Wolff --- Faculty of Biology (FB2), GermanyThe stomach contents of the giraffe catfish, Auchenoglanis occidentalis, populations from Lake Bontanga and Lake Tono, two artificial lakes, were analysed, together with length frequency data collected from July 2016 to June 2017, to gain knowledge of the stock bioecology... -
Exploring indicators of subjective well-being for first-year university students
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Bianca Botha --- WorkWell Research Unit, Faculty of Economic and Management Sciences, South Africa Karina Mostert --- WorkWell Research Unit, Faculty of Economic and Management Sciences, South Africa Melissa Jacobs --- WorkWell Research Unit, Faculty of Economic and Management Sciences, South AfricaThis study aimed to explore indicators of subjective well-being among first-year university students attending a South African university (N = 11; female = 6, black = 6, age range = 19 to 22). Participants shared their experiences of university life by participating in group sessions using the Mmogo... -
A comparison between the morphological and molecular approach to identify the benthic diatom community in the St Lucia Estuary, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: M Nunes --- Botany Department and Institute for Coastal and Marine Research, South Africa JB Adams --- Botany Department and Institute for Coastal and Marine Research, South Africa S Van Aswegen --- Department of Biochemistry and Microbiology, South Africa GF Matcher --- Department of Biochemistry and Microbiology, South AfricaThe use of diatoms as bioindicators to detect human-induced change is a globally accepted monitoring tool. DNA metabarcoding is an effective complementary tool to standard microscopic methods for species identification, providing reliable and timeous diatom assessments in a range of... -
Higher education institutions, private sector and government collaboration for innovation within the framework of the Triple Helix Model
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Wanjiru Gachie --- Discipline of Computer Science Education, University of KwaZulu-Natal, Durban, South AfricaThis research aims at contributing to a broader comprehension of the nature of the Triple Helix Model within the National System of Innovation. The research hence undertakes an exploration and explanation of the nature of existing or absence thereof of... -
A systems-based R&D management model for the road and transport engineering sector applied to a community access roads and transport research programme
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Frederik Christoffel Rust --- , South Africa Leslie Roy Sampson --- , South AfricaA conceptual non-linear, systems-based R&D management model for the road and transport sector was developed to address the associated complexities of transport and road research. It takes account of all the elements of the innovation value chain as well as... -
Assessment of the ecological status of the Kinyankonge River (Burundi), using a Biotic Integrity Index of zooplankton (BII-zooplankton)
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: S Buhungu --- , Burundi C Sibomana --- , Burundi DC Adjahouinou --- , Bénin G Ntakimazi --- , Burundi CA Bonou --- , Bénin E Montchowui --- , République du BéninThis study aimed at assessing the ecological status of the Kinyankonge River using a zooplankton-based Biotic Integrity Index (BII-zooplankton). This was achieved through monthly collections of zooplankton from four stations along the river over 18 months (from July 2015 to... -
Are South African linefishes recovering and what makes them prone to overexploitation?
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: M Haupt --- , South Africa H Winker --- , South Africa D Parker --- , South Africa SE Kerwath --- , South AfricaManaging coastal fisheries is challenging as the status of many fish stocks caught in these fisheries remains unknown. In the South African linefishery, regular comprehensive assessments of the status of most linefish stocks are unattainable owing to a scarcity of... -
The effects of uncertainty on investor expectations and volatility in the South African white maize futures market
Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Christo Auret --- , South Africa Ayesha Sayed --- , South AfricaGiven the rapidly changing nature of financial markets, volatility indices often influence the trading behaviour of market participants, as they identify market patterns, predict market risk and gauge market sentiment. This paper examines the effects of uncertainty on the expectations... -
Evaluation of agribusiness performance in Nigeria
Item type: Journal Article • Journal: Africa Journal of Management • Authors: Chukwuma Otum Ume --- , Germany Anslem Anibueze Enete --- , Nigeria Anthony Nwajesus Onyekuru --- , Patience Ifeyinwa Opata --- , NigeriaIn Nigeria, agribusiness has a major role to play in the transformation of the agricultural sector. Little is known about the key performance indicators relevant to the agribusiness sector. This article employed the latest World Bank Enterprise Survey data to... -
Digital divide in Nigeria: The role of regional differentials
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Richard Adeleke --- , NigeriaThis study empirically analyzed the spatial distribution of Internet usage in Nigeria and identified its key determinants using data on the 36 states and the Federal Capital Territory from 2016 to 2018. In contrast to previous studies, the approach is... -
Structural equation modelling of risk indicators for suicidal thoughts and behaviours among Nigerian Yorùbá youth
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Kehinde Clement Lawrence --- , South AfricaIn the past, suicide was considered as an abomination among the Yorùbás, yet it was also perceived as an acceptable and honourable way to escape dishonour, indignity, or shame. This study investigated psychosocial and personal risk indicators for suicidal thoughts... -
Species composition and diversity of epiphytic microalgae on Myriophyllum spicatum in the El-Ibrahimia Canal, Egypt
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Eman Ibrahim Abdel-Aal --- , EgyptThe El-Ibrahimia Canal is one of the main irrigation sources in Egypt, that it supplies perennial irrigation to approximately 600 000 ha (one-fourth of the Egyptian cultivated land). An annual study on species composition of microalgae attached to the submerged... -
Assessment of river health using benthic macroinvertebrates in the Dwars River, Olifants Water Management Area, Limpopo province, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: TV Mmako --- , South Africa A Addo-Bediako --- , South Africa WJ Luus-Powell --- , South Africa M Kekana --- , South AfricaThe study assessed the impact of water and sediment quality on benthic macroinvertebrate assemblages in the Dwars River, a tributary of the Olifants River, Limpopo province, South Africa. Physico-chemical variables, heavy metals and macroinvertebrates were collected using standard methods. A... -
Seasonal dynamics in water quality and phytoplankton of four tropical rivers in Ebonyi State, southeastern Nigeria
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: GN Nwonumara --- , Nigeria OI Okogwu --- , NigeriaThis study assessed the impacts of human activities and naturogenic processes on the water quality and phytoplankton of four rivers proximal to rice farms in Ebonyi State, south-eastern Nigeria. A range of water quality parameters were measured in conjunction with... -
Comparison of three soil health indicators between different vegetative strip compositions
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Robyn Nicolay --- , South Africa Simon Jeffery --- , United Kingdom Nicola Randall --- , United KingdomContemporary evidence shows biotic factors play a prominent role in the soil health and the provision of soil functions. Herbaceous grassland species differ in their modulation of soil communities, effects on soil components, as well the processes they interact with... -
Development of a multimetric index for assessing the ecological integrity of some selected rivers and streams in the north-eastern part of Lake Tana sub-basin, Ethiopia
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Amelework Zewudu --- , Ethiopia Getachew Beneberu --- , Ethiopia Minwyelet Minigst --- , Ethiopia Amare Mezgebu --- , EthiopiaA multimetric index was developed using benthic macroinvertebrates to assess the ecological health of selected rivers and streams in the north-eastern part of Lake Tana subbasin, Ethiopia. One-time extensive sampling was carried out during the post-rainy season (November–December) of 2016... -
Assessing fish community response to water quality and habitat stressors in KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Wesley Evans --- , South Africa Colleen T Downs --- , South Africa Matthew J Burnett --- , South Africa Gordon C O’Brien --- , South AfricaThe degradation of freshwater ecosystems can be attributed to stressors associated with the increased demand for water and other aquatic resources. Freshwater ecosystems face such challenges in supporting agriculture, industry, and high-density urban areas in KwaZulu-Natal (KZN) province, South Africa... -
An indicator-based approach for cross-realm coastal biodiversity assessments
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: LR Harris --- Institute for Coastal and Marine Research, Nelson Mandela University, South Africa AL Skowno --- South African National Biodiversity Institute (SANBI), South Africa KJ Sink --- Institute for Coastal and Marine Research, Nelson Mandela University, South Africa L van Niekerk --- Institute for Coastal and Marine Research, Nelson Mandela University, South Africa SD Holness --- Institute for Coastal and Marine Research, Nelson Mandela University, South Africa M Monyeki --- South African National Biodiversity Institute (SANBI), South Africa P Majiedt --- South African National Biodiversity Institute (SANBI), South AfricaEcosystem status assessments are generally separated into realm-specific analyses (terrestrial, freshwater, estuarine or marine), but without integrating these into a coherent assessment of coastal biodiversity across the land–sea interface. Trends in assessment indicators in coastal versus non-coastal areas have also... -
DRIFT: incorporating an eco-social system network and time series approach into environmental flow assessments
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: AR Joubert --- , South Africa CA Brown --- , South Africa JM King --- , South Africa H Beuster --- , South Africa A Greyling --- , South AfricaDRIFT (Downstream Response to Imposed Flow Transformation) is an interactive, ecological-social process and software package to assist with environmental flow assessments and river management decision-making. It was originally developed in the 1990s and has subsequently evolved and been applied in... -
Freshwater ecosystems and interactions with the SDG 2030 Agenda: implications for SDG implementation in South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: N Libala --- , South Africa N Griffin --- , South Africa A Nyingwa --- , South Africa J Dini --- , South AfricaFreshwater ecosystems play a fundamental role in supporting the environment, the economy and people’s well-being. However, human development and mismanagement have degraded these ecosystems. Using network analysis, we examined the interlinkages (synergies and trade-offs) between indicator 6.6.1 (water-related ecosystems) and... -
Global concentration of wood-pulp production, 1961–2021
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Luiz Moreira Coelho Junior --- Federal University of Paraiba, Brazil Thaisa de Sousa Selvatti --- Federal University of Lavras, Brazil Filipe Vanderlei Alencar --- Federal University of Paraiba, Brazil Anna Manuella Melo Nunes --- Federal University of Paraiba, Brazil Maisa Santos Joaquim --- Universidade de Brasilia, Brazil Edvaldo Pereira Santos Júnior --- Federal University of Paraiba, Brazil Alvaro Nogueira de Souza --- Universidade de Brasilia, BrazilWood pulp is one of the main products of forestry worldwide, being a necessary intermediate product for all types of paper produced. In order to understand the market dynamics of this product, this study analyses the global concentration of the... -
Sustainability practices, sustainable development goals and the hospitality sector: perspectives from Sri Lankan chain hotels
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Janith Iddawala --- NSBM Green University, Sri Lanka Binuri Mehara Welengoda --- NSBM Green University, Sri Lanka Banudee Thisali Rathnayaka --- NSBM Green University, Sri LankaDespite being an industry at the forefront of adopting sustainable practices, there has been a continued paucity of hospitality research focusing on the extent of adoption of sustainability practices and their contribution towards achieving the sustainable development goals (SDGs) from... -
Assessing the pertinence and usefulness of HIV and AIDS indicators for evaluating clinical care quality: Perspectives of health care professionals
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Tambwe Willy Muzumbukilwa --- University of KwaZulu-Natal, South Africa Manimani Riziki Ghislain --- University of KwaZulu-Natal, South Africa Aganze Glory-Aime Mushebenge --- University of KwaZulu-Natal, South Africa Rajesh Vikram Vagiri --- University of KwaZulu-Natal, South Africa Manimbulu Nlooto --- University of KwaZulu-Natal, South AfricaFollowing a systematic review of quality indicators employed in the evaluation of clinical care for individuals with HIV and AIDS, we performed “an exploratory study” that aims to assess the clinical significance and practical applicability of these indicators from the... -
A comparative analysis of compliance with HIV/AIDS clinical care indicators and treatment outcomes: A case study of the Democratic Republic of Congo and South Africa
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Tambwe Willy Muzumbukilwa --- School of Health Sciences, University of KwaZulu-Natal, South Africa Riziki Ghislain Manimani --- University of KwaZulu-Natal, South Africa Rajesh Vikram Vagiri --- School of Health Sciences, University of KwaZulu-Natal, South Africa Manimbulu Nlooto --- School of Health Sciences, University of KwaZulu-Natal, South AfricaBackground: Significant advancements have been made in human immunodeficiency virus (HIV) and acquired immunodeficiency syndrome (AIDS) diagnosis and treatment, yet progress in quality care remains limited. To address this gap, 88 quality indicators for clinical HIV/AIDS care were evaluated. This... -
Macrofauna assemblages and their relationships with environmental parameters in mangroves of Kribi, Cameroon
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Vanessa Maxemilie Ngo-Massou --- High Teacher’s Training College, University of Yaoundé I, Cameroon Ernest Flavien Kottè-Mapoko --- Institute of Fisheries and Aquatic Sciences at Yabassi, The University of Douala, Cameroon Guillaume Léopold Essomè-Koum --- Institute of Fisheries and Aquatic Sciences at Yabassi, The University of Douala, Cameroon Elegbede Isa Olalekan --- Lagos State University, Nigeria Boubakary --- The University of Maroua, Cameroon Laurant Nyamsi-Moussian --- The University of Douala, Cameroon Alphonse Konango-Samè --- The University of Douala, Cameroon Ophman Nsame-Bile --- The University of Douala, Cameroon Wendy Loys Keedi-A-Bougen --- The University of Douala, Cameroon Joseph Lebel Tamesse --- High Teacher’s Training College, University of Yaoundé I, Cameroon Ndongo Din --- The University of Douala, CameroonChanges in composition, abundance and distribution of macrofaunal assemblages are subject to environmental influences. However, the effects of ecological disturbance on mangrove habitats in Cameroon have not been sufficiently studied with regard to macrofaunal assemblages. This work aims to identify...