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Soils and the environment: the past 25 years
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.L. Schoeman --- , Republic of South Africa P.W. van Deventer --- , Republic of South AfricaLocal work on selected environmental impacts on soil quality and the role of soils in the attenuation of environmental pollution is reviewed. Examples of negative impacts from mining, industries, urbanization, agriculture and forestry abound. The safe and sustainable use of... -
EFFECT OF CATTLE DIP CONTAINING TOXAPHENE ON THE FAUNA OF A SOUTH AFRICAN RIVER
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: P.M. Brooks --- , South Africa B.D. Gardner --- , South AfricaIn August 1978 the Hluhluwe River, which runs through the Hluhluwe Game Reserve (Natal, South Africa), was polluted by toxaphene from a cattle dip tank. Faunal surveys were conducted to determine the impact of the insecticide on the fish and... -
THE EFFECT OF SEASON ON A BIOTIC WATER QUALITY INDEX: A CASE STUDY OF THE YELLOW JACKET AND MAZOWE RIVERS, ZIMBABWE.
Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: B. Gratwicke --- , , ZimbabweThe effect of season on the South African Scoring System (SASS) biotic index for rapid assessment of water quality using benthic macroinvertebrates was investigated using the Yellow Jacket and Mazowe Rivers in Zimbabwe as a case study. Several impacts in... -
Groundwater quality monitoring around Bass Lake, Betty's Bay, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: K Schachtschneider K WinterThe study involves the analysis of groundwater around Bass Lake, part of a fragile black water lake system situated along a narrow coastal plain in the southern Cape, in order to establish the quality of the water and to identify... -
Bioaccumulation of selected inorganic substances in the tissue of Oreochromis shiranus from Bunda Dam, Malawi
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: PP Mumba JW Banda E Kaunda C Ndamala G GhambiA study to assess and monitor the concentrations of sulphate, sodium, magnesium, calcium, chloride, iron and nitrate in Bunda Dam was carried out from May to November 1998. The same parameters, except nitrate and chloride, were also determined in the... -
Effects of human activities on the Waterval River, Vaal River catchment, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: TK Gyedu-Ababio F van WykRand Water's chemical water quality data from 1991 to 2000 were used to assess the water quality of the Waterval River, which contributes about 111 x 106m3 of water to the Vaal River annually. Due to a biological community's ability... -
The phytoplankton of Great Bitter Lake, Egypt, including the impacts of nutrient-laden and heated effluents
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: HusseinE Touliabah WilliamD TaylorA year-long survey of the phytoplankton and nutrients in Great Bitter Lake indicates that this is a severely eutrophic lake. Chlorophyll levels were consistently high (>30μg/l), especially in summer (>90μg/l). The phytoplankton community comprised mostly diatoms and blue-green algae, although... -
Joint action toxicity of spent lubrication oil and laundry detergent against Poecilia reticulata (Telostei: Poeciliidae)
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: AdebayoA OtitolojuSingle and joint action bioassays using spent lubrication oil, laundry detergent and a mixture of both (based on a 1:1 ratio of their 96h LC50 values) against the guppy Poecilia reticulata were carried out. On the basis of 96h mortality... -
Physico-chemical conditions and macroinvertebrate fauna in the River Nile from Aswan to Cairo
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: M Reda Fishar R Thorne W Peter WilliamsThis paper examines the distribution of benthic macroinvertebrates in relation to physico-chemical conditions along 1 035km of the River Nile from Aswan High Dam to Al Kanater Barrage, Cairo. Total Dissolved Salts and several individual chemical variables showed positive linear... -
Acute effects of Cu on oxygen consumption and 96 hr-LC50 values in the freshwater fish Tilapia sparrmani (Teleostei: Cichlidae) in Mooi River hard water, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: WJ van Aardt Mynhardt HoughThe median lethal copper (Cu) concentration (96 hr-LC50) values for acute Cu toxicity for Tilapia sparrmanii (live mass: 30 ± 8g) in Mooi River hard water of dolomitic origin at 20 °C, pH 7.9, was 68.1 μmol l−1. At this... -
The pollution status of Lake Nakuru, Kenya: heavy metals and pesticide residues, 1999/2000
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: WJ Mavura --- Department of Chemistry, Kenya PT Wangila --- Department of Chemistry, KenyaThis study was carried out from April 1999 to May 2000 to investigate the extent of pollution of Lake Nakuru. Water, sediment, fish and algae collected from the lake and its feeder rivers during the dry and rainy seasons were... -
Accumulation of hepatic Hsp70 and plasma cortisol in Oreochromis mossambicus following sublethal metal and DDT exposure
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: SS Mlambo --- Centre for Aquatic Research, Zoology Department, South Africa JHJ van Vuren --- Centre for Aquatic Research, Zoology Department, South Africa R Basson --- Centre for Aquatic Research, Zoology Department, South Africa B Grant --- Centre for Aquatic Research, Zoology Department, South AfricaHeat shock response in Oreochromis mossambicus livers was measured, using antibodies specific to Hsp70 family members, by an immunoblotting protocol. The hepatic isoforms Hsp70, Hsp74 and Hsp76 were identified and quantified from copper exposures. Long-term DDT exposure did not result... -
Water quality impacts on instream biota of the Shingwedzi River, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: PSO Fouche --- Department of Zoology, South Africa W Vlok --- Department of Zoology, South AfricaWater quality, macroinvertebrate diversity (using SASS5) and fish diversity (using the fish response assessment index) of the Shingwedzi River system were monitored in 2007/2008 to determine the present status of the system. Possible water pollution sources were identified by aerial... -
Polychlorinated biphenyl accumulation and hepatic EROD activity in golden grey mullet Liza aurata from Tunis Bay, southern Mediterranean
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: W Masmoudi --- UR Physiologie et Ecophysiologie des Organismes Aquatiques, Département des Sciences Biologiques, Faculté des Sciences de Tunis, Tunisia MS Romdhane --- , Tunisia S Khériji --- UR Physiologie et Ecophysiologie des Organismes Aquatiques, Département des Sciences Biologiques, Faculté des Sciences de Tunis, Tunisia M El Cafsi --- UR Physiologie et Ecophysiologie des Organismes Aquatiques, Département des Sciences Biologiques, Faculté des Sciences de Tunis, TunisiaLiza aurata was used as a bioindicator species to monitor contamination by organic xenobiotics of estuarine water at the outlet of Khélij channel [canal], Tunisia, from November 2002 to December 2003. Polychlorinated biphenyl (PCB) concentrations, including coplanar congeners, were measured... -
Metal concentrations in water, sediment and sharptooth catfish Clarias gariepinus from three peri-urban rivers in the upper Manyame catchment, Zimbabwe
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: T Nhiwatiwa --- Department of Biological Sciences, Zimbabwe M Barson --- Department of Biological Sciences, Zimbabwe AP Harrison --- Department of Animal and Veterinary Basic Sciences, Denmark B Utete --- Department of Biological Sciences, Zimbabwe RG Cooper --- Division of Physiology, UKConcentrations of zinc, cadmium, chromium, nickel, lead, copper and iron were measured in flowing water, riverbed sediments and tissues of sharptooth catfish Clarias gariepinus from three rivers in the upper Manyame catchment over seven months in 2008–2009. The Manyame and... -
Evaluation of the fish health assessment index in the Olifants River system, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: RM Watson --- Department of Zoology, South Africa D Crafford --- Department of Zoology, South Africa A Avenant-Oldewage --- Department of Zoology, South AfricaThe fish health assessment index (HAI) biomonitoring technique, developed in the USA and subsequently tested in South Africa, was re-evaluated in the Olifants River system using Clarias gariepinus, Oreochromis mossambicus and Labeobarbus marequensis during drought and flood conditions in 1994–1997... -
Zooplankton composition and community structure in Lake Tiga, Kano, Nigeria
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: EO Akindele --- Department of Zoology, Nigeria IF Adeniyi --- Department of Zoology, NigeriaZooplankton in Lake Tiga was identified and its community structure assessed between March 2009 and March 2011. A total of 54 species of zooplankton was recorded, comprising two species of Protozoa, 26 species of Rotifera, eight species of Copepoda, 11... -
Changes in the epibenthos of Saldanha Bay, South Africa, between the 1960s and 2001: an analysis based on dredge samples
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: N Kruger GM Branch CL Griffiths JG FieldSaldanha Bay, which lies on the south-west coast of South Africa, has undergone major development over the past 30 years, including breakwater and harbour construction, harbour extension, dredging, mining, fishing, fish processing and mussel culture. This study examines whether the... -
Effects of heavy metals on the development and survival of abalone Haliotis midae larvae
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: RL Stofberg --- Department of Conservation Ecology and Entomology, South Africa CA Simon --- Department of Botany and Zoology, South Africa RG Snyman --- Department of Biodiversity and Conservation, Faculty of Applied Sciences, South AfricaDespite a growing abalone Haliotis midae industry in South Africa, few studies have measured the effects of heavy metals on larval survival and growth in the face of recent increases in marine pollution. The aim of this study was to... -
Human-mediated drivers of change — impacts on coastal ecosystems and marine biota of South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: A Mead --- Centre for Invasion Biology, South Africa C L Griffiths --- Centre for Invasion Biology, South Africa G M Branch --- Department of Biological Sciences, South Africa C D McQuaid --- Department of Zoology and Entomology, South Africa L K Blamey --- Department of Biological Sciences, South Africa J J Bolton --- Department of Biological Sciences, South Africa R J Anderson --- Department of Biological Sciences, South Africa F Dufois --- Marine Research Institute, South Africa M Rouault --- Marine Research Institute, South Africa P W Froneman --- Department of Zoology and Entomology, South Africa A K Whitfield --- South African Institute for Aquatic Biodiversity, South Africa L R Harris --- Department of Zoology, South Africa R Nel --- Department of Zoology, South Africa D Pillay --- Department of Biological Sciences, South Africa J B Adams --- Department of Botany, South AfricaCoastal ecosystems are highly vulnerable to human-mediated drivers of global change because they are located at the land–ocean interface and often host centres of urbanisation and development. The South African coastline comprises several distinct coastal ecoregions that support a wide... -
Reviewing evidence of marine ecosystem change off South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: C L Moloney --- Department of Biological Sciences, South Africa S T Fennessy --- Oceanographic Research Institute, South Africa M J Gibbons --- Department of Biodiversity and Conservation Biology, South Africa A Roychoudhury --- Department of Earth Sciences, South Africa F A Shillington --- Marine Research Institute, South Africa B P von der Heyden --- Department of Earth Sciences, South Africa K Watermeyer --- Department of Biological Sciences, South AfricaRecent changes have been observed in South African marine ecosystems. The main pressures on these ecosystems are fishing, climate change, pollution, ocean acidification and mining. The best long-term datasets are for trends in fishing pressures but there are many gaps,... -
Lead levels in rivers, sediments and fish ponds in the Ibadan metropolitan area, south-west Nigeria
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: OlanikeK AdeyemoLead levels in rivers, their surface sediments, and in fish ponds in Ibadan, Nigeria, were assessed in the 2003–2004 dry and wet seasons. It was planned to reduce lead levels in petrol, regarded as the major source of lead in... -
Heavy metals in the water and sediments of Oued Es-Souk, Algeria, a river receiving acid effluents from an abandoned mine
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Chahrazed BoukhalfaThe Sidi Kamber Mine, abandoned since 1976, is still a source of acidic drainage entering the Oued Es-Souk River. An investigation of the rate of pollution of the Oued Es-Souk and the variation of its water quality showed that the... -
Trends analysis relating to pollution in Sakumo Lagoon, Ghana
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Ruby Asmah Hedrick Dankwa CA Biney CC AmankwahSakumo Lagoon, situated near Accra, is a Ramsar-listed coastal wetland threatened by urban and agricultural waste, being located in an urban area where access to domestic and waste disposal facilities is a major problem. The aim of this study was... -
Lake Victoria water resources management challenges and prospects: a need for equitable and sustainable institutional and regulatory frameworks
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: GB LuiloCurrent issues relating to water utilisation, pollution and management in Lake Victoria, as well as legislative and regulatory history governing the management of the Lake Victoria Basin are reviewed. The articles of the agreements, many of which are now outdated,... -
Composition and abundance of the zooplankton community in the Bitter Lakes, Egypt, in relation to environmental factors
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: RA El-BassatThe taxonomic composition of the zooplankton community of the Bitter Lakes, Egypt, was examined in 2003–2004 in relation to the spatial and temporal distribution of environmental factors. Copepoda were dominant, forming 49% of the zooplankton, followed by Protista at 37%... -
Abundance, composition and distribution of solid wastes in the Tanzanian waters of Lake Victoria
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: GW Ngupula --- Tanzania Fisheries Research Institute (TAFIRI), Tanzania RJ Kayanda --- Tanzania Fisheries Research Institute (TAFIRI), Tanzania CA Mashafi --- Tanzania Fisheries Research Institute (TAFIRI), TanzaniaThe abundance, composition and distribution of solid waste in the Tanzanian waters of Lake Victoria were quantified during surveys in May and October 2013 at 68 stations in six depth strata using the bottom trawl swept area method. By weight,... -
Jet lag and environmental conditions that may influence exercise performance during the 2010 FIFA World Cup in South Africa
Item type: Journal Article • Journal: South African Family Practice • Authors: MP Schwellnus --- UCT/MRC Research Unit for Exercise Science and Sports Medicine, Department of Human Biology, EW Derman --- UCT/MRC Research Unit for Exercise Science and Sports Medicine, Department of Human Biology,The 2010 FIFA World Cup will be held in South Africa in June/July 2010. This is the largest international sports event ever to be held in this country. At this time 32 international football teams, with their management and supporters,... -
Metal bioaccumulation in the fish of the Olifants River, Limpopo province, South Africa, and the associated human health risk: a case study of rednose labeo Labeo rosae from two impoundments
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: A Jooste --- Department of Biodiversity, South Africa SM Marr --- Department of Biodiversity, South Africa A Addo-Bediako --- Department of Biodiversity, South Africa WJ Luus-Powell --- Department of Biodiversity, South AfricaThe Olifants River, Limpopo River system, is now one of the most polluted rivers in South Africa. The concentrations of metals in fish muscle tissue from two impoundments on the Olifants River, Flag Boshielo Dam and Phalaborwa Barrage, were measured... -
Acute toxicity of selected heavy metals to Oreochromis mossambicus fry and fingerlings
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: TB Mashifane --- Aquaculture Research Unit, School of Agricultural and Environmental Sciences, South Africa NAG Moyo --- Aquaculture Research Unit, School of Agricultural and Environmental Sciences, South AfricaAcute toxicity of copper, lead and iron to tilapia Oreochromis mossambicus fry and fingerlings was tested using 24 h to 96 h static non-renewal toxicity tests. Three methods, probit analysis, Spearman–Karber and a linear regression model, were used to calculate... -
Europe's long history of extracting African renewable energy: Contexts for African scientists, technologists, innovators and policy-makers
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Kate B. Showers --- Centre for World Environmental History, United KingdomHaving failed to identify local energy supplies compliant with Kyoto Protocol obligations, the EU turned to Africa in the 21st C. According to definition, the term ‘renewable energy’ source equally describes slaves, forests and rivers. Environmental history analysis demonstrates the... -
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... -
Patterns of chironomid body-size distribution in an effluent-impacted river in the Eastern Cape, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: ON Odume --- Unilever Centre for Environmental Water Quality, South Africa CG Palmer --- Unilever Centre for Environmental Water Quality, South Africa FO Arimoro --- Department of Biological Sciences, Nigeria PK Mensah --- Unilever Centre for Environmental Water Quality, South AfricaBody size is an important determinant of assemblage structure in rivers and streams impacted by elevated concentrations of pollutants such as salts and metals. In the present study, because of the larger surface-area-tovolume ratio of small-bodied chironomid species compared with... -
Toxicity evaluation of effluent from the de-oiling works of a decommissioned Nigerian crude oil pipeline using Palaemonetes africanus
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: NH Amaeze --- Ecotoxicology Laboratory, Department of Zoology, Nigeria FA Adetoro --- Ecotoxicology Laboratory, Department of Zoology, Nigeria OA Adegboro --- Ecotoxicology Laboratory, Department of Zoology, NigeriaOil industry activities often involve the cleaning and replacement of pipelines, usually resulting in the discharge of effluents into waterbodies. The toxicity of de-oiling effluent from a decommissioned crude oil pipeline in the Niger Delta region of Nigeria was assessed... -
Spatial and temporal variation in cadmium body loads of four intertidal invertebrates from False Bay, South Africa
Item type: Journal Article • Journal: African Zoology • Authors: A.J. Reinecke --- Department of Botany and Zoology, South Africa N.P. Mdzeke --- Department of Botany and Zoology, South Africa S.A. Reinecke --- Department of Botany and Zoology, South AfricaIncreasing urbanization and industrialization along the coastal areas of False Bay in South Africa can endanger coastal ecosystems because of increasing metal pollution. To obtain baseline data on contamination levels in the intertidal zone, cadmium (Cd) body loads of four... -
Foraging at wastewater treatment works increases the potential for metal accumulation in an urban adapter, the banana bat (Neoromicia nana)
Item type: Journal Article • Journal: African Zoology • Authors: S. Naidoo --- School of Life Sciences, University of KwaZulu-Natal, South Africa D. Vosloo --- School of Life Sciences, University of KwaZulu-Natal, South Africa M. C. Schoeman --- School of Life Sciences, University of KwaZulu-Natal, South AfricaWastewater treatment works (WWTWs) are known to provide profitable foraging areas for insectivorous bats in Europe and the New World because of their association with high abundance of pollution-tolerant midges (Diptera). However, bats that feed on these insects may also... -
Cellular responses of the starfish Parvalustra exigua to metal pollution in False Bay, South Africa
Item type: Journal Article • Journal: African Zoology • Authors: Sophié A. Reinecke --- Department of Botany and Zoology, South Africa Adriaan J. Reinecke --- Department of Botany and Zoology, South AfricaThe cushion sea star Parvalustra exigua from five sites along the shore of False Bay on the southern coast of South Africa was studied using two cellular biomarkers, the neutral red retention assay (NRR) and the lysosomal destabilization assay (DI)... -
Polycyclic aromatic hydrocarbons in water, sediment and fish from the Warri River at Ubeji, Niger Delta, Nigeria
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: MC Asagbra --- Ecology and Environmental Biology Research Unit, Department of Zoology, Nigeria AS Adebayo --- Cell Biology and Genetics Unit, Department of Zoology, Nigeria CI Anumudu --- Cell Biology and Genetics Unit, Department of Zoology, Nigeria OA Ugwumba --- Hydrobiology and Fisheries Research Unit, Department of Zoology, Nigeria AAA Ugwumba --- Hydrobiology and Fisheries Research Unit, Department of Zoology, NigeriaThe Warri River at Ubeji, Nigeria, receives pollutants from an oil refinery. The levels of 16 priority polycyclic aromatic hydrocarbons (PAHs) in water, sediment and the tissue of tilapia from the Warri River were investigated in 2010 using gas chromatography... -
Ecosystem-specific water quality indices
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: I Rangeti --- Department of Community Health Studies, South Africa B Dzwairo --- Institute for Water and Wastewater Technology, South Africa GJ Barratt --- Department of Community Health Studies, South Africa FAO Otieno --- Technology, Innovation and Partnerships, South AfricaThe water quality index (WQI) has emerged as a central tool for analysing and reporting quality trends since 1965. It provides a better overview of water quality variability in a catchment than conventional monitoring programmes that use individual variables. Since... -
Impact of land use on water quality in the Likangala catchment, southern Malawi
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: D Pullanikkatil --- Department of Geography and Environmental Sciences, South Africa LG Palamuleni --- Department of Geography and Environmental Sciences, South Africa TM Ruhiiga --- Department of Geography and Environmental Sciences, South AfricaIn southern Malawi, the Likangala River, which is important for irrigation, domestic use and fishing, is affected by various land uses along its catchment. The impact of urbanisation and agriculture on the water quality of this river was investigated in... -
Leachate contamination potential of a waste dumpsite in Effurun City, Southern Nigeria using the leachate pollution index
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Iwekumo Ebibofe Agbozu --- Department of Environmental Science, College of Science, Nigeria Osayomwanbor Ebenezer Oghama --- Department of Environmental Science, College of Science, Nigeria Olaide Opeyemi Akinyemi --- Department of Environmental Science, College of Science, NigeriaThe leachate pollution index (LPI) has been used to quantify the leachate contamination potential of a dumpsite in Effurun, Southern Nigeria. Leachate samples were collected from 3 locations in the dumpsite and labeled L1, L2 and L3. Replicates were collected... -
Assessment of noise pollution from electricity generators in a high-density residential area
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Nwasinachi U. Menkiti --- Centre for Environmental Management and Control, Nigeria Jonah C. Agunwamba --- Centre for Environmental Management and Control, NigeriaNoise pollution associated with household electricity generators is an emerging environmental degradation in many developing nations. The aim of this study is to evaluate noise pollution from the use of household electricity generators in a high-density residential area. A survey... -
In vitro screening for endocrine disruptive activity in selected South African harbours and river mouths
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: JC Truter --- Department of Botany and Zoology, South Africa JH van Wyk --- Department of Botany and Zoology, South Africa BK Newman --- Coastal Systems Research Group, Natural Resources and the Environment, South AfricaVarious waterborne anthropogenic contaminants disrupt the endocrine systems of wildlife and humans, targeting reproductive pathways, among others. Very little is known, however, regarding the occurrence of endocrine disruptive activity in South African freshwater ecosystems, and coastal ecosystems have not been... -
Metal enrichment in water and fish in a semi-urban Nigerian lake, and their associated risks
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: CD Ezeonyejiaku --- Department of Zoology, Nigeria MO Obiakor --- School of Environmental and Rural Science, AustraliaTrace metal (Zn, Pb, Cu, Cr and Cd) concentrations in the water column and in the liver, muscle and gill tissues of Parachanna obscura and Clarias gariepinus in Agulu Lake, Nigeria, were investigated in June 2014 and compared with WHO... -
Plastic ingestion by estuarine mullet Mugil cephalus (Mugilidae) in an urban harbour, KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: T Naidoo --- School of Life Sciences, South Africa AJ Smit --- Department of Biodiversity and Conservation Biology, South Africa D Glassom --- School of Life Sciences, South AfricaCoastal urban environments have high plastic pollution levels, and hence interactions between plastic debris and marine life are frequent. We report on plastic ingestion by mullet Mugil cephalus in Durban Harbour, KwaZulu-Natal, South Africa. Of 70 mullet (13.0–19.5 cm total length),... -
Subfossil diatoms from Hann Park pond, Dakar, Senegal: floristic inventory and palaeoenvironmental reconstruction
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: I Badiane --- Département de Géologie, Faculté des Sciences et Techniques, E Sow --- Département de Géologie, Faculté des Sciences et Techniques, CAK Fofana --- Département de Géologie, Faculté des Sciences et Techniques, C Aw --- Département de Géologie, Faculté des Sciences et Techniques,Diatoms in a 100 cm-long core from a pond in Hann Forest Park, western Senegal, were studied with the aim of reconstituting this interdune depression’s history, particularly the human influence, during the last century. Sixty-three species and varieties of diatoms... -
Water cytotoxicity and dioxins bioaccumulation in an Egyptian delta wetland ecosystem
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: MM El-Shazly --- Department of Entomology, Faculty of Science, Egypt El Elzayat --- Department of Zoology, Faculty of Science, Egypt WA Omar --- Department of Zoology, Faculty of Science, Egypt IIA El-Sebeay --- Plant Protection Research Institute, Agricultural Research Center, Egypt YA Edmardash --- Department of Entomology, Faculty of Science, Egypt MM Soliman --- Department of Entomology, Faculty of Science, Egypt KM Abdel Rahman --- Department of Entomology, Faculty of Science, Egypt MS Ibrahim --- Department of Geography, Faculty of Arts, EgyptManzala Lake, as one of the main Egyptian wetland ecosystems, is facing risks of pollution. An in vitro cytotoxicity test using a mammalian cell line was employed to determine the toxicity of multiple pollutants in the water and Tilapia zillii... -
Water quality of the Luvuvhu River and its tributaries within the Thulamela Local Municipality, Limpopo Province, South Africa
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Mpho Monyai --- Department of Environmental Sciences, South Africa Rudzani A. Makhado --- Department of Environmental Sciences, South Africa Ntshenge O. Novhe --- Council for Geoscience, South AfricaThe study was conducted during dry and wet periods at the Luvuvhu River and its tributaries within the Thumalamela Local Municipality, Limpopo Province, South Africa. A total of 50 samples (25 per sampling session) were collected for physicochemical analysis at... -
Bioaccumulation of heavy metals in two morphotypes of African large barb Labeobarbus intermedius (Osteichthyes: Cyprinidae) in Lake Hawassa, Ethiopia
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: S Sorsa --- Department of Biology, College of Natural and Computational Sciences, Ethiopia A Gezahagn --- Ethiopian Rift Valley Lakes Basin Authority, Ethiopia E Dadebo --- Department of Biology, College of Natural and Computational Sciences, EthiopiaWater and muscle tissue samples from two morphotypes of the African large barb Labeobarbus intermedius collected from three sites in Lake Hawassa in 2012–2013 were analysed for eight heavy metals, including Cd, Co, Cr, Cu, Mn, Ni, Pb and Zn... -
Organochlorine pesticides in Cyprinus carpio from Sidi Salem Dam, north-western Tunisia
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: N Mzoughi --- Institut National des Sciences et Technologies de la Mer, Laboratoire Milieu Marin, R Ennouri --- Institut National des Sciences et Technologies de la Mer, Laboratoire Milieu Marin, L Chouba --- Institut National des Sciences et Technologies de la Mer, Laboratoire Milieu Marin,Cyprinus carpio (Linnaeus, 1758) caught in Sidi Salem Dam in 2011 were analysed for the levels of organochlorine pesticides (OCPs), including hexachlorobenzene (HCB), aldrin, heptachlor, lindane, dieldrin, endrin, and pp′-DDT and its two main metabolites pp′-DDD and pp′-DDE, in order... -
Impacts of cage culture on physico-chemical and bacteriological water quality in Lake Volta, Ghana
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: MNK Clottey --- Department of Marine and Fisheries Sciences, R Asmah --- Council for Scientific and Industrial Research, Water Research Institute, PK Ofori-Danson --- Department of Marine and Fisheries Sciences, MY Ameworwor --- Department of Marine and Fisheries Sciences, AY Karikari --- Council for Scientific and Industrial Research, Water Research Institute,The effects of cage fish farming on physico-chemical and bacteriological water quality in Lake Volta, Ghana, were investigated in 2013–2014. Farmed and unfarmed (control) areas of the lake were selected for monitoring. Nutrients, temperature, dissolved oxygen, conductivity, turbidity, pH, total... -
Effect of land use on water quality and phytoplankton community in the tropical Khami River in semi-arid southwest Zimbabwe
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: T Dzinomwa --- Department of Environmental Science and Health, Faculty of Applied Science, Zimbabwe HGT Ndagurwa --- Department of Forest Resources and Wildlife Management, Faculty of Applied Science, ZimbabweThe water quality and phytoplankton community assemblage of the Khami River, a tropical river sub catchment in semi-arid southwest Zimbabwe impacted by agriculture and urban land use, were examined in March 2015. Conductivity, sulphates, total dissolved solids and salinity were... -
Assessment of water quality in selected shallow wells of Keiyo Highlands, Kenya
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Peter K. Mbaka --- Department of Civil, Construction and Environmental Engineering, Kenya John K. Mwangi --- Department of Civil, Construction and Environmental Engineering, Kenya Clement K. Kiptum --- Department of Civil and Structural Engineering, KenyaA supply of potable water is important for the sustenance of a healthy population. This study was conducted in the Keiyo Highlands, Elgeyo Marakwet County, in Kenya. The aim was to assess seasonal variation in physico-chemical and microbiological water quality... -
Determination of water quality, and trace metals in endemic Sarotherodon linellii, Pungu maclareni and Clarias maclareni, in crater Lake Barombi Mbo, Cameroon
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: BN Sone --- Faculty of Environmental Sciences and Natural Resource Management, Norway. Current address: c/o P Ndumbe, Standard Chartered Bank, Yaounde, Cameroon BO Rosseland --- Faculty of Environmental Sciences and Natural Resource Management, Norway. Current address: c/o P Ndumbe, Standard Chartered Bank, Yaounde, Cameroon H-C Teien --- Faculty of Environmental Sciences and Natural Resource Management, Norway. Current address: c/o P Ndumbe, Standard Chartered Bank, Yaounde, CameroonConsidering water pollution as a potential threat to some endemic cichlids of Lake Barombi Mbo, Cameroon, an investigation was done in 2011 to determine trace metals in its water, linking their uptake in gills and liver of fish to water... -
Bioaccumulation of selected metals in the gill, liver and muscle tissue of rednose labeo Labeo rosae from two impoundments on the Olifants River, Limpopo river system, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: SM Marr --- Department of Biodiversity, Faculty of Science and Agriculture, South Africa J Lebepe --- Department of Biodiversity, Faculty of Science and Agriculture, South Africa JCA Steyl --- Department of Paraclinical Sciences, Faculty of Veterinary Science, South Africa WJ Smit --- Department of Biodiversity, Faculty of Science and Agriculture, South Africa WJ Luus-Powell --- Department of Biodiversity, Faculty of Science and Agriculture, South AfricaMetal concentrations in the gill, muscle and liver tissues of Labeo rosae from two impoundments, Loskop and Flag Boshielo dams on the Olifants River, were evaluated in 2011 to detect patterns in metal associations between tissues and impoundments. Elevated concentrations... -
Improving the performance of the EPT Index to accommodate multiple stressors in Afrotropical streams
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: FO Masese --- Department of Fisheries and Aquatic Sciences, Kenya PO Raburu --- Department of Fisheries and Aquatic Sciences, KenyaThe EPT index (Ephemeroptera, Plecoptera and Trichoptera) may be skewed by the wide tolerance to multiple stressors of the Baetid, Caenid and Hydropsychid families, which affects the performance of the EPT index as an indicator of multiple stressors in aquatic... -
Bird species richness and densities in relation to sulphur dioxide gradients and environmental variables
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Luckson Muyemeki --- Unit for Environmental Sciences and Management (Geography and Environmental Management), South Africa Roelof Burger --- Unit for Environmental Sciences and Management (Geography and Environmental Management), South Africa Stuart J Piketh --- Unit for Environmental Sciences and Management (Geography and Environmental Management), South Africa Steven W Evans --- SARCHI Chair on Biodiversity Value and Change, School of Mathematical and Natural Sciences, South AfricaThe expansion of coal-fired power stations in South Africa has resulted in growing environmental concerns as they are the largest emitters of sulphur dioxide (SO2). Sulphur dioxide emissions from power plants pose a potential threat to avian populations. However, the... -
The scale effect of economic development and freshwater quality in Nigeria: Environmental pollution of the Lower River Niger Basin
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Chigozie Damian Ezeonyejiaku --- Department of Zoology, Nigeria Maximilian Obinna Obiakor --- School of Environmental and Rural Science, Australia Dymphna Javier --- School of Environmental and Rural Science, Australia Ikem Innocent Ifedigbo --- Department of Zoology, Nigeria Hamilton Chukwuebuka Obiakor --- Department of Public Administration, NigeriaRiver Niger is the third-longest river in Africa and the longest river in West Africa. The river basin traverses West and Central African countries, and forms a coastal delta (in southern Nigeria) where it empties into the Atlantic Ocean. The... -
Heavy metal contamination of water and fish in peri-urban dams around Bulawayo, Zimbabwe
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: C Teta --- Department of Environmental Science and Health, Zimbabwe M Ncube --- Department of Environmental Science and Health, Zimbabwe YS Naik --- Department of Environmental Science and Health, ZimbabweUrban effluents are significant sources of heavy metal pollution in fresh water. Metal contamination in dams around the city of Bulawayo, Zimbabwe, were monitored during October 2014 to assess ecological and public health risks. Heavy metals were measured in water,... -
Presence of microplastics in the tube structure of the reef-building polychaete Gunnarea gaimardi (Quatrefages 1848)
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: HA Nel --- Department of Zoology and Entomology, South Africa PW Froneman --- Department of Zoology and Entomology, South AfricaThe prevalence of microplastics in the marine environment has resulted in a need to understand their association with various fauna. The aim of this study was to assess whether microplastic particles are present in the tube structure of the indigenous... -
Use of diatom indices to categorise impacts on and recovery of a floodplain system in South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: R Musa --- Department of Zoology, South Africa R Greenfield --- Department of Zoology, South AfricaThe trophic status of the Ramsar-accredited Nyl River floodplain, which is stressed by sewage treatment effluents, and its ability to restore normal conditions, were assessed in 2014–2015 using diatoms as biological indicators. The Trophic Diatom Index, Specific Pollution Sensitivity Index... -
Biometric variations and oxidative stress responses in juvenile Clarias gariepinus exposed to Termex®
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: JU Nnadi --- Department of Zoology and Environmental Biology, Nigeria IN Dimelu --- Department of Home Economics and Hospitality Management Education, Nigeria SI Nwani --- Department of Agriculture Education, Nigeria JC Madu --- Department of Zoology and Environmental Biology, Nigeria CI Atama --- Department of Zoology and Environmental Biology, Nigeria GN Attamah --- Department of Zoology and Environmental Biology, Nigeria JI Okwor --- Department of Zoology and Environmental Biology, Nigeria CD Nwani --- Department of Zoology and Environmental Biology, NigeriaThe current study investigated the effects of termite insecticide, Termex® (imidacloprid 35.50% SC), on biometric variations and oxidative stress biomarkers in Clarias gariepinus. Fish were exposed to 4.00 and 6.00 µg l–1 sublethal Termex® concentrations in 2017. The gill and... -
Derivation of scenario-specific water quality guidelines for acid mine drainage in South Africa, using a risk-based approach
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: EC Vellemu --- Unilever Centre for Environmental Water Quality, South Africa PK Mensah --- Unilever Centre for Environmental Water Quality, South Africa N Griffin --- Unilever Centre for Environmental Water Quality, South Africa ON Odume --- Unilever Centre for Environmental Water Quality, South AfricaAcid mine drainage (AMD) continues to threaten water quality in many mining regions globally. Data paucity renders it challenging to inform appropriate water quality management strategies for a succinct scientific understanding of the effects of AMD on freshwater ecosystems. The... -
Acute toxicity effects of ibuprofen on behaviour and haematological parameters of African catfish Clarias gariepinus (Burchell, 1822)
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: EO Ogueji --- Department of Fisheries and Aquaculture, Nigeria CD Nwani --- Department of Zoology and Environmental Biology, Nigeria SC Iheanacho --- Department of Fisheries and Aquaculture, Nigeria CE Mbah --- Department of Zoology, Zaria CO Okeke --- Department of Biology/Microbiology/Biotechnology, Nigeria A Yaji --- Department of Fisheries, NigeriaIndiscriminate discharge of pharmaceutical waste into the aquatic ecosystem may pose serious health challenges to aquatic biota. The effect of acute exposure to ibuprofen was evaluated using changes in behaviour and haematological parameters under static bio-assay method in Clarias gariepinus... -
Occurrence and distribution of organochlorine pesticide residue levels in water, sediment and aquatic weeds in the Nyando River catchment, Lake Victoria, Kenya
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: DA Abong’o --- College of Biological and Physical Sciences, School of Physical Science, Department of Chemistry, Kenya SO Wandiga --- College of Biological and Physical Sciences, School of Physical Science, Department of Chemistry, Kenya IO Jumba --- College of Biological and Physical Sciences, School of Physical Science, Department of Chemistry, KenyaSamples of water, sediments and aquatic weeds were collected from 26 sites in the Nyando River catchment of the Lake Victoria basin in 2005–2006. The objective was to investigate levels of organochlorine pesticides that have either been banned or are... -
Concentrations and ecological risks of metals in surface sediments of some coastal creeks in the Niger Delta, Nigeria
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: CMA Iwegbue --- Department of Chemistry, Nigeria OV Beecroft --- Department of Chemistry, Nigeria JE Ogala --- Department of Geology, Nigeria FE Egobueze --- Environment Department, Nigeria GO Tesi --- Department of Chemistry, Nigeria GE Nwajei --- Department of Chemistry, Nigeria BS Martincigh --- School of Chemistry and Physics, South AfricaThe concentrations of nine metals were measured by atomic absorption spectrophotometry in surface sediments of three coastal creeks, namely, the Ifie, Egbokodo and Ubeji creeks, in the Niger Delta of Nigeria, from August 2012 to January 2013. The aim of... -
Occurrence and ingestion of microplastics by zooplankton in Kenya's marine environment: first documented evidence
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: C Kosore --- Kenya Marine and Fisheries Research Institute, Kenya L Ojwang --- Pwani University, Kenya J Maghanga --- Taita Taveta University, Kenya J Kamau --- Kenya Marine and Fisheries Research Institute, Kenya A Kimeli --- Kenya Marine and Fisheries Research Institute, Kenya J Omukoto --- Kenya Marine and Fisheries Research Institute, Kenya N Ngisiag’e --- Kenya Marine and Fisheries Research Institute, Kenya J Mwaluma --- Kenya Marine and Fisheries Research Institute, Kenya H Ong’ada --- Kenya Marine and Fisheries Research Institute, Kenya C Magori --- Kenya Marine and Fisheries Research Institute, Kenya E Ndirui --- Kenya Marine and Fisheries Research Institute, KenyaMicroplastics can be ingested by marine organisms and may lead to negative impacts at the base of marine food chains. This study investigated the occurrence and composition of microplastics in the sea-surface water and sought evidence of ingestion by zooplankton... -
Physico-chemical water quality characteristics of upper Ebonyi River, Enugu State, Nigeria
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: NO Nweze --- Department of Plant Science and Biotechnology, Nigeria EC Eze --- Department of Plant Science and Biotechnology, NigeriaThe physico-chemical characteristics of upper Ebonyi River, Nigeria were assessed at four locations, from September 2014 to December 2014, using standard methods, thereby providing information for documentation and the determination of pollution status in comparison with World Health Standards. Parameters,... -
Physico-chemical and Water Quality Index analysis of the Okhuaihe River, Edo State, Nigeria
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: NK Egun --- Greenspring Consulting, Nigeria CU Ogiesoba-Eguakun --- Department of Animal and Environmental Biology, NigeriaThe water quality of the Okhuaihe River, Edo State, Nigeria was investigated from February to June 2016 to determine its suitability for drinking and other domestic purposes. Water samples collected from three stations were tested for fifteen physico-chemical parameters using... -
Heavy metal concentrations in water and sediment of the Steelpoort River, Olifants River System, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: A Addo-Bediako --- Department of Biodiversity, South Africa K Matlou --- Department of Biodiversity, South Africa E Makushu --- Department of Biodiversity, South AfricaSteelpoort River has been adversely affected by human activities in the catchment. Water and sediment quality of the river was assessed in 2015. The concentrations of some of the metals in water were found to be high and exceeded the... -
Factors that influence firewood use among electrified Bapedi households of Senwabarwana Villages, South Africa
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Khomotso Semenya --- College of Agriculture and Environmental Sciences, Republic of South Africa Fannie Machete --- College of Agriculture and Environmental Sciences, Republic of South AfricaThis paper presents the factors that influence firewood use among electrified Bapedi households in Senwabarwana Villages. The study follows explanatory and exploratory methods of data analysis, through survey (structured interviews) and meta-analysis. In-depth content analysis was followed to establish trends... -
The potential use of chironomids (Insecta: Diptera) as bioindicators in streams and rivers around Sebeta, Ethiopia
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: A Mezgebu --- Department of Fisheries and Aquatic Sciences, Ethiopia A Lakew --- National Fisheries and Aquatic Life Research Centre, Ethiopia B Lemma --- Department of Zoological Sciences, Ethiopia G Beneberu --- Department of Biology, EthiopiaThe impact of human activities on streams and rivers of Ethiopia was assessed using the Dipteran family Chironomidae. Different stressors originating from industries and agricultural activities were assessed to see their effect on Chironomidae taxa. Chironomidae larvae were collected using... -
Assessment of trace metals in water samples and tissues of African catfish (Clarias gariepinus) from the Akaki River Catchment and the Aba Samuel Reservoir, central Ethiopia
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: AB Kassegne --- Centre for Environmental Science, Ethiopia T Berhanu --- Interim Coordinator, Central Research Laboratory, Ethiopia JO Okonkwo --- Department of Environmental, Water and Earth Sciences, South Africa S Leta --- Centre for Environmental Science, EthiopiaConcentrations of Cd, Cr, Cu, Fe, Mn, Ni, Pb and Zn were determined in water and muscle of Clarias gariepinus from the Akaki River Catchment and the Aba Samuel Reservoir in Ethiopia during 2016 and 2017. The analyses were performed... -
Histopathology of the liver and gills of Labeo rosae (rednose Labeo) from Loskop Dam in South Africa
Item type: Journal Article • Journal: African Zoology • Authors: Jeffrey Lebepe --- , South Africa Johan Steyl --- , South Africa Wilmien J Luus-Powell --- , South AfricaThe Loskop Dam is the most polluted impoundment in the Olifants River, because it receives pollutants from the entire mine-dominated upper catchment. However, histopathology of fish inhabiting this polluted dam is scantly explored. The current study aimed to investigate the... -
Assessment of heavy metals pollution in surface and groundwater systems in Oued Righ region (Algeria) using pollution indices and multivariate statistical techniques
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: ML Benhaddya --- , Algeria Y Halis --- , Algeria B Hamdi-Aïssa --- , AlgeriaSurface and groundwater samples of the Oued Righ region (south-eastern Algeria) were analysed for Cd, Cr, Cu, Mn, Ni, Pb and Zn by atomic absorption spectrophotometric method. An integrated approach of pollution evaluation indices and multivariate statistical methods (one-way ANOVA,... -
Plankton Index of Biotic Integrity (P-IBI) for assessing ecosystem health within the Ouémé River basin, Republic of Benin
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: AM Houssou --- , Republic of Bénin DC Adjahouinou --- , Republic of Bénin CA Bonou --- , Republic of Bénin E Montchowui --- , Republic of BéninThis study aims at assessing the impact of organic pollution on plankton communities of the Ouémé River using a Plankton Index of Biotic Integrity (P-IBI) as a tool for ecological heath assessment. Plankton and other environmental data were collected monthly... -
Water quality of the volcanic crater lake, Lake Barombi Kotto, in Cameroon
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: ME Awo --- , Cameroon BA Fonge --- , Cameroon PT Tabot --- , Cameroon JTK Akoachere --- , CameroonCameroon is endowed with many freshwater lakes and rivers but, because of increasing anthropogenic activities, most of these water bodies are gradually being degraded. Lake Barombi Kotto is one of the volcanic crater lakes in Cameroon that serves as a... -
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... -
Monitoring metals in South African harbours between 2008 and 2009, using resident mussels as indicator organisms
Item type: Journal Article • Journal: African Zoology • Authors: V Wepener --- , South Africa N Degger --- , FranceMore than 65% of the South African coastline is threatened as a result of pollution, a large proportion of which is land derived. To date the majority of published data on metal monitoring has been on limited regions or once-off... -
Gonadal development and intersex condition of marbled lungfish, Protopterus aethiopicus (Heckel, 1851), in contaminated sites in Lake Victoria, Uganda
Item type: Journal Article • Journal: African Zoology • Authors: Inuwa Badamasi --- , Uganda Robinson Odong --- , Uganda Charles Masembe --- , UgandaThe first evidence of the impact of environmental contamination on populations of Protopterus aethiopicus (Heckel, 1851) in terms of body indices, cellular development (histology) and intersex condition in Lake Victoria, Uganda is provided. Specimens were obtained from the more polluted... -
Presence of microplastics in benthic macroinvertebrates along the Kenyan coast
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: W Awuor --- , Kenya AWN Muthumbi --- , Kenya DV Robertson-Andersson --- , South AfricaMicroplastics (MPs) are plastics less than 5 mm in diameter. Their small size renders them invisible to deposit- and filter-feeding fauna, leading to unintentional ingestion. This study investigated the presence of MPs in an oyster (Saccostrea cuccullata) and three species... -
Seasonal variance in water quality, trace metals and infection variables of Cichlidogyrus philander Douëllou, 1993 (Monogenea, Ancyrocephalidae) infecting the gills of Pseudocrenilabrus philander (Weber, 1897) in the Padda Dam, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Patience C Igeh --- , South Africa Beric M Gilbert --- , South Africa Annemariè Avenant-Oldewage --- , South AfricaIncreasing awareness of deteriorating health of aquatic ecosystems, as a result of human activities, has led to the suggestion that fish host-parasite relationships are possible bioindicators of environmental pollution. This study examined the impact of water quality and trace elements... -
Quality assessment of surface water using the Nile Chemical Pollution Index (NCPI) and microbiological pollution of the Rosetta Branch (Nile River, Egypt)
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Amal A Othman --- , Egypt Afify DG Al-Afify --- , Egypt Amaal M Abdel-Satar --- , Egypt Mohamed F Ramadan --- , EgyptThe Rosetta Branch (Nile River, Egypt) is one of the main sources of freshwater for drinking, agricultural, and industrial activities in the Nile Delta. However, this water supply is compromised because it receives heavy loads of domestic, agricultural and industrial... -
Heavy metal profiles in limpets and algae on the Eastern Cape coast of South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: N Mbandzi --- , South Africa MDV Nakin --- , South Africa GM Saibu --- , South Africa AO Oyedeji --- , South AfricaHeavy metal pollution is an increasing threat to the marine environment and is a major health concern. Both marine limpets and algae have been employed as biomonitors elsewhere in the world, but there are few or no data for these... -
Quality assessment of groundwater in an agricultural belt in eastern Nigeria using a Water Quality Index
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Ogechi L Alum --- , Nigeria Chukwuma OB Okoye --- , Nigeria Hillary O Abugu --- , NigeriaThe physico-chemical and microbial analyses of fifteen hand-dug wells (HDWs) and six boreholes (BHs) in the Ezeagu and Uzo-uwani Local Governments Areas (LGAs) of Enugu State in south-eastern Nigeria were conducted to evaluate their water quality for potability. Samples were... -
A review of the populations of tilapiine species in lakes Victoria and Naivasha, East Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Edwine Yongo --- , Kenya Laurent Cishahayo --- , Peoples Republic of China Eunice Mutethya --- , Kenya Bonface Mnang’at Alkamoi --- , Kenya Kokwon Costa --- , Kenya Nzeyimana Jean Bosco --- , Peoples Republic of ChinaThis paper discusses the catch trends, population attributes and biological characteristics of tilapiine species that are both native and that have been introduced into Lake Victoria and Lake Naivasha. Predation by Lates niloticus, species hybridisation, overfishing, pollution and eutrophication have... -
Comparative biotolerance of water spinach, Ipomoea aquatica, to heavy metal pollution in the Agodi Reservoir and the Ogunpa River, Oyo State, Nigeria
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: PO Ogungbile --- , Nigeria PO Ayeku --- , Nigeria AO Ajibare --- , NigeriaThe biotolerance of water spinach (Ipomoea aquatica) to heavy metals was investigated in the Agodi Reservoir and its supplying source, the Ogunpa River, to examine the impact of aquatic pollution. I. aquatica was collected monthly from the Ogunpa River and... -
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... -
A critical review of macroinvertebrate-based bioassessment approaches in Africa’s lotic systems: developments, challenges, and legal requirements
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: John Peter Obubu --- , Ethiopia Seyoum Mengistou --- , Ethiopia Tadesse Fetahi --- , Ethiopia Wolfram Graf --- , Austria Robinson Odong --- , UgandaWorldwide, water resources have an impact on all forms of life as lotic systems are networks that interconnect water resources and land. They are important for navigation, water supplies, agriculture, recreation, and industrial development and help to regulate changes in... -
Spatial distribution of zooplankton in relation to some selected physicochemical water quality parameters of Lake Hawassa, Ethiopia
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Getacher Beyene --- , Ethiopia Demeke Kifle --- , Ethiopia Tadesse Fetahi --- , EthiopiaWhile scientific information on spatial variation of freshwater zooplankton is relevant to limnological studies, little information is available from the Ethiopian Rift Valley lake: Lake Hawassa. This study aimed at understanding the spatial distribution of the dominant zooplankton taxa in... -
Disaggregation and assessment of estuarine pressures at the country-level to better inform management and resource protection – the South African experience
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: L van Niekerk --- , South Africa S Taljaard --- , South Africa SJ Lamberth --- , South Africa JB Adams --- , South Africa SP Weerts --- , South Africa CF MacKay --- , South AfricaGlobally, the ability of estuaries to sustain functionality and productivity is deteriorating rapidly under ever-increasing anthropogenic pressures. We present a systematic approach to identify, characterise and rank global pressures affecting estuaries. Six main pressure categories are reviewed: freshwater flow modification;... -
Spatial and diurnal distribution of carbon monoxide (CO) and its health and environmental implications in selected locations in the Niger Delta Area of Nigeria
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Iwekumo Ebibofe Agbozu --- Federal University of Petroleum Resources Effurun, Nigeria Osayomwanbor Ebenezer Oghama --- Federal University of Petroleum Resources Effurun, NigeriaEmission of carbon monoxide (CO) poses unprecedented risks in urban environments. Moreover, there has been a growing concern about the incidences of deaths arising from suffocation by CO fumes in Nigeria. Hence, this study attempts to evaluate the spatial and... -
Flow alterations and nutrient loading reduce primary producer variability in a temporarily closed microtidal estuary in KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Monique Nunes --- , South Africa Daniel A Lemley --- , South Africa Janine B Adams --- , South AfricaPrimary producer responses to cumulative regulating factors were investigated in a temporarily closed microtidal estuary. We hypothesised that the phytoplankton chlorophyll-a concentration (Chl a) and invasive alien aquatic plant (IAAP) abundance would be highest during the low-flow season and that... -
Water quality of the Blue Nile at Khartoum, Sudan, before complete filling of the Grand Ethiopian Renaissance Dam
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: AMH Bashir --- University of Khartoum, Sudan ME Abdelrahman --- University of Khartoum, Sudan FA Sinada --- University of Khartoum, SudanPhysico-chemical variables were monitored biweekly for the Blue Nile at Khartoum between July 2017–June 2019. The aim was to document the present status of water quality at Khartoum before complete filling of the Grand Ethiopian Renaissance Dam (GERD). Physico-chemical parameters... -
Assessment of water quality for suitability and human health risk: a study of the Owan River, Edo State, Nigeria
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Nkonyeasua Kingsley Egun --- University of Benin, Nigeria Ijeoma Patience Oboh --- University of Benin, NigeriaSuitability assessment of water bodies for human consumption and its implication on human health is critical to water resources utilisation and sustainable development. This study investigated the water quality of the Owan River and the potential health risk to users... -
Ecological Violations and Anthropogenic Pollution in Ngũgĩ wa Thiong’o’s Wizard of the Crow
Item type: Journal Article • Journal: Eastern African Literary and Cultural Studies • Authors: Dele Maxwell Ugwanyi --- Enugu State University of Science and Technology, NigeriaEcological violations and anthropogenic pollution have been recurring motifs in contemporary African novels. Existing studies on African literature from the ecological standpoint have focused largely on the narrative strategies of nature writing, with little attention given to the impacts and... -
Diversity of euglenoids in a drinking water source in Burkina Faso (West Africa): implications for sustainability and water quality
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Minata Ouattara --- University Joseph Ki-Zerbo, Burkina Faso Frédéric Zongo --- University Joseph Ki-Zerbo, Burkina Faso Bilassé Zongo --- University Joseph Ki-Zerbo, Burkina FasoEuglenophyta are a group of algae that occur in water polluted by organic matter, which makes them a good indicator for organic pollution. This study aimed to determine the diversity of Euglenophyta, the environmental conditions favourable to their development and... -
Water quality profile and metal pollution indices of the main stream of the Nile River in Egypt
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Manar M Hussein --- National Institute of Oceanography and Fisheries (NIOF), Egypt Mohamed E Goher --- National Institute of Oceanography and Fisheries (NIOF), Egypt Ahmed H Mangood --- Menofia University, Egypt Ibrahim E Mousa --- University of Sadat City, EgyptThe lower Nile River is a vital drinking and irrigation water source in Egypt. Human activities adjacent to rivers deteriorate the quality of such water resources. The water quality profiles of 23 sites along the Nile were calculated in accordance... -
Assessment of water quality and associated human health risk of a tropical freshwater body in Edo State, Nigeria
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Ekene Biose --- University of Benin, Nigeria Nkonyeasua Kingsley Egun --- University of Benin, Nigeria Nkolika Uzoh --- University of Benin, Nigeria Michael Osasele Omoigberale --- University of Benin, NigeriaThe quality of freshwater sources is a key factor in sustainable development. This study investigated the water quality suitability of Ossiomo River for human consumption and the implications for public health. Water samples were collected and analysed from October 2021... -
Impact of agricultural land-use on functional feeding groups of Afrotropical Ephemeroptera, Plecoptera and Trichoptera in the Kat River, Eastern Cape, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Frank Chukwuzuoke Akamagwuna --- Rhodes University, South Africa Oghenekaro Nelson Odume --- Institute for Water Research, Rhodes University, South Africa Nicole Bertine Richoux --- Rhodes University, South AfricaDespite Africa experiencing a substantial rise in inadequately managed agricultural practices, studies examining the effects of these activities on the functional organisation of macroinvertebrates in tropical streams are underdeveloped. The responses of Ephemeroptera, Plecoptera and Trichoptera (EPTs) functional feeding groups... -
Impact of long-term pig slurry application on phosphorus fractions in profiles of contrasting soils in KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Sbonakaliso Msizeni Zwane --- University of KwaZulu-Natal, South Africa Pardon Muchaonyerwa --- University of KwaZulu-Natal, South AfricaLong-term applications of pig slurry (PS) can lead to phosphorus (P) accumulation in soil, but its distribution across soil profiles remains poorly studied, particularly after 50 years of PS application on pasture soils, compared to undisturbed and cropped Luvisols, and... -
Heavy metal contamination in mangrove ecosystems: assessing bioaccumulation in crabs and snails along the Bayelsa Coast, Nigeria
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: HO Adamu --- University of Bremen, Germany JI Izegaegbe --- University of Eastern Finland, Finland RO Hussaini --- Ambrose Alli University, Nigeria EM Odoya --- Ambrose Alli University, Nigeria HO Adamu --- Federal Ministry of Water Resources, NigeriaRapid human population growth and industrial activities along coastal areas have intensified anthropogenic contamination in water, sediment and edible fauna, posing public health risks. Mangrove ecosystems act as pollutant sinks, increasing the likelihood of heavy metal accumulation in aquatic organisms... -
Ghost gear crisis: the threat of ‘abandoned, lost or otherwise discarded fishing gear’ (ALDFG)
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: LA Odhiambo --- Directorate of Research and Innovation, Kenya F Kawaka --- Jaramogi Oginga Odinga University of Science and Technology, Kenya J Sande --- , KenyaAbandoned, lost or otherwise discarded fishing gear (ALDFG), also known as ghost gear, represents one of the most under-addressed environmental threats. ALDFG is a problem because it is often non-biodegradable and continues to trap marine life long after the gear... -
Prediction of ambient air pollution with regression approach using machine learning
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Bachandeep Singh Bhathal --- University Institute of Computing, Chandigarh University, India Gaurav Gupta --- Punjabi University, India Brahmaleen Kaur Sidhu --- Punjabi University, IndiaAccurate air quality prediction is vital for managing pollution and protecting public health. This study evaluates the performance of three machine learning models – Decision Tree Regression (DTR), Linear Regression (LR), and Random Forest Regression (RFR) – to forecast the... -
An assessment of heavy metal accumulation in the Vaal River system, South Africa, using artificial mussels
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: JA Calaca --- University of the Witwatersrand, South Africa S Dahms-Verster --- University of the Witwatersrand, South AfricaThis study aims to identify metal concentrations around the Vaal River system by means of spot water sampling and the use of artificial mussels (AMs). Levels of Al, Cd, Co, Cr, Cu, Fe, Mn, Pb and Zn were determined at...