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Recommendations for the management of subsistence fisheries in South Africa
Item type: Journal Article • Journal: South African Journal of Marine Science • Authors: J. M. Harris G. M. Branch B. M. Clark A. C. Cockcroft C. Coetzee A. H. Dye M. Hauck A. Johnson L. Kati-Kati Z. Maseko K. Salo W. H. H. Sauer N. Siqwana-Ndulo M. SowmanThis paper summarizes recommendations for the management of previously marginalized and neglected subsistence fisheries in South Africa. The recommendations stem from the activities and analyses of a task group appointed by Government and mandated to provide advice about management of... -
THE HABITATS AND HABITAT PREFERENCES OF
CLARIAS GARIEPINUS (PISCES: CLARIIDAE) IN A CLEAR COASTAL LAKE (LAKE SIBAYA, SOUTH AFRICA)Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: M.N. Bruton --- , South AfricaThe habitat preferences of the sharptooth catfish, Clarias gariepinus, in a clear coastal lake, Lake Sibaya, are described. Larval and small juvenile catfish inhabit flotsam and the rootstocks of plants in very shallow marginal areas. Larger juveniles inhabit densely-vegetated marginal... -
ZOOPLANKTON AND ENVIRONMENTAL CONDITIONS IN GROENVLEI, SOUTHERN CAPE, DURING 1976
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: D.J. Coetzee --- Cape Department of Nature and Environmental Conservation, South AfricaThe zooplankton and environmental conditions in Groenvlei were studied during 1976 as part of an overall ecological study of the zooplankton of the Wilderness Lakes system. The Groenvlei water was found to be well mixed and low in dissolved PO4−P,... -
ZOOPLANKTON DISTRIBUTION IN RELATION TO ENVIRONMENTAL CONDITIONS IN THE SWARTVLEI SYSTEM, SOUTHERN CAPE
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: D.J. Coetzee --- Cape Department of Nature and Environmental Conservation, South AfricaSwartvlei is an ectogenic meromictic coastal lake connected to the sea via an estuary which closes periodically due to the formation of a sand bar across its mouth. The inflow of high-salinity water water from the sea into the lake... -
STUDIES ON THE ZOOBENTHOS OF SOME SOUTHERN CAPE COASTAL LAKES. SPATIAL AND TEMPORAL CHANGES IN THE BENTHOS OF SWARTVLEI, SOUTH AFRICA, IN RELATION TO CHANGES IN THE SUBMERGED LITTORAL MACROPHYTE COMMUNITY
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: B.R. Davies --- , South AfricaMajor changes in the benthic macro-invertebrate community of the littoral zone of Swartvlei, South Africa, took place between January and April 1978, and the equivalent months of 1980. These changes, which were associated with a collapse of the submerged littoral... -
ZOOPLANKTON AND ENVIRONMENTAL CONDITIONS IN A SOUTHERN CAPE COASTAL LAKE SYSTEM
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: D.J. Coetzee --- Cape Department of Nature and Environmental Conservation, South AfricaThe usually natural closing and artificial opening of the Tow River mouth to the sea have a major influence on the physico-chemical environmental conditions in the coastal lake system formed by the Tow River, Eilandvlei, Langvlei and Rondevlei, as it... -
THE ZOOBENTHOS OF THE TOUW RIVER FLOODPLAIN
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: B.R. DAVIES --- Institute for Freshwater Studies, Republic of South AfricaAn eighteen month study (January 1979 - June 1980) of the sediment, emergent and submerged plant-associated benthic macro-invertebrates of the western sector of the Touw River Flood-plain is reported for four study sites: Wilderness Lagoon, the Touw River and East... -
A NOTE ON SALINITY AND OXYGEN STRATIFICATION IN THE MARINA DA GAMA, ZANDVLEI
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: B.R. Davies --- Zoology Department, Republic of South Africa B.A. Stewart --- Zoology Department, Republic of South AfricaTen months data (March to December, 1983), on temperature, salinity and dissolved oxygen are reported for two canals within the Marina Da Gama, Zandvlei, a coastal lake periodically open to the sea. They show that although there was minimal temperature... -
NUTRIENTS IN AQUATIC ECOSYSTEMS: AN INTRODUCTION TO SIMILARITIES BETWEEN FRESHWATER AND MARINE ECOSYSTEMS
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: P Chapman --- , South Africa JA Thornton --- , South Africa -
NUTRIENTS AND THE PRODUCTIVITY OF ESTUARINE AND COASTAL MARINE ECOSYSTEMS
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: S.W. Nixon --- Marine Ecosystems Research Laboratory, United States of America C.A. Oviatt --- Marine Ecosystems Research Laboratory, United States of America J. Frithsen --- Marine Ecosystems Research Laboratory, United States of America B. Sullivan --- Marine Ecosystems Research Laboratory, United States of AmericaRecent research on estuarine and coastal marine systems has revealed two particularly interesting things about nutrients and productivity. First is the observation that these areas are among the most intensively fertilized environments on earth. Second is the common finding that... -
ZOOPLANKTON AND ESTUARINE RELICT (BENTHIC) FAUNA IN LAKE MZINGAZI, A FRESHWATER COASTAL LAKE OF NATAL
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: B.K. Fowles --- , South Africa C. G.M. Archibald --- , South AfricaLake Mzingazi, a natural, undisturbed freshwater coastal lake in the heart of the Richards Bay municipal area, is threatened by rapid urban and industrial growth. The previously unrecorded composition and distribution of zooplankton in the lake was studied during 1979... -
A RULE-BASED ECOSYSTEM MODEL FOR THE MANAGEMENT OF LAKE ST LUCIA
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: R.H. Taylor --- Natal Parks Board, South Africa B.P. Farm --- Dept. of Ecology and Behavioural Biology, United States of America A.M. Starfield --- Dept. of Ecology and Behavioural Biology, United States of AmericaLand transformations in the catchments of Lake St Lucia have altered the hydrology of the system and increased management is now needed to counteract these changes. There are several management options available, but prior to implementing them we must be... -
DISTRIBUTION AND ABUNDANCE OF THE BENTHOS IN THE SEDIMENTS OF LAKE CUBHU: A FRESHWATER COASTAL LAKE IN ZULULAND SOUTH AFRICA
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: D.P. Cyrus --- Coastal Research Unit of Zululand, Department of Zoology, South Africa T.J. Martin --- Coastal Research Unit of Zululand, Department of Zoology, South AfricaA preliminary investigation of the macrobenthic invertebrates of the sediments of Lake Cubhu, a freshwater coastal lake near Richards Bay was conducted on a quarterly basis during 1987. The most important factor which determined the abundance and distribution of each... -
THE LAKE ST. LUCIA SYSTEM—A RESEARCH ASSESSMENT
Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: D.P. Cyrus --- Coastal Research Unit of Zululand, Department of Zoology, South AfricaThis paper assesses the research undertaken at Lake St. Lucia over the past 25 years based on over 300 documents from that period. Trends related to both time and subject matter are evident, and these are considered in relation to... -
PRELIMINARY OBSERVATIONS ON THE MACROCRUSTACEA OF COASTAL LAKES IN THE VICINITY OF RICHARDS BAY, ZULULAND, SOUTH AFRICA
Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: P.E. Reavell --- Department of Botany, South Africa D.P. Cyrus --- Coastal Research Unit of Zululand, Department of Zoology, South AfricaA limited amount of research has been carried out on the four coastal lakes in the Richards Bay area. Due to the impending threat of water pollution from industrial, mining and residential areas within the catchments of these lakes there... -
DIET AND REPRODUCTIVE ACTIVITY OF THE ESTUARINE ROUNDHERRING GILCHRISTELLA AESTUARIA IN CUBHU, A FRESHWATER COASTAL LAKE IN NORTHERN NATAL, SOUTH AFRICA
Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: D.P. Cyrus --- Coastal Research Unit of Zululand, Department of Zoology, South Africa E.C. Wellmann --- Coastal Research Unit of Zululand, Department of Zoology, South Africa T.J. Martin --- Coastal Research Unit of Zululand, Department of Zoology, South AfricaA study of the diet and reproductive activity of Gilchristella aestuaria revealed that active gonads were present throughout the year. The main breeding season appeared to be from spring through to autumn with two distinct peaks occurring from August to... -
AN HOLISTIC APPROACH TO THE MANAGEMENT OF WATER QUALITY IN FALSE BAY, CAPE TOWN, SOUTH AFRICA
Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: A. J.R. Quick --- Town Planning Branch, Cape Town City Council, South AfricaAn overview of the water quality status of False Bay identified the bacterial/viral water quality of stormwater and rivers discharging near contact recreation beaches to be the management concern of highest priority. A second water quality concern is the potential... -
COASTAL AQUATIC ECOSYSTEMS, CONSERVATION AND MANAGEMENT STRATEGIES IN NIGERIA
Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: E.A. Ajao --- , NigeriaThe coastal ecosystems in Nigeria are classified into four broad regions according to differences in general morphology, vegetation and beach type. They are the barrier lagoon complex, the transgressive mud beach, the Niger delta and the strand coast. The delta... -
A LIMNOLOGICAL SYNOPSIS OF BHANGAZI SOUTH, A DYSTROPHIC COASTAL LAKE IN THE GREATER ST LUCIA WETLAND PARK (KWAZULU/NATAL), WITH COMMENTS ON ITS CONSERVATION VALUE.
Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: R. C. Hart --- , , South Africa C. C. Appleton --- , , South AfricaBase-line limnological and biological data are given for Lake Bhangazi South, a small lake on the coastal plain of Kwazulu-Natal, South Africa. This shallow (Zmax < 6 m), subtropical lake is a warm and seemingly continuously polymictic system, but experiences... -
A REVIEW OF THE ICHTHYOFAUNA OF THE MHLATHUZE ESTUARY
Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: S. P. Weerts --- , , D. P. Cyrus --- , ,The fish fauna of the Mhlathuze estuary was reviewed making reference to surveys dating from 1948 to 1997. The concept of Estuarine Dependence Category was employed to describe species affinities with the marine, estuarine and freshwater environments. -
Pilot survey to assess sample size for herbaceous species composition assessments using a wheel-point apparatus on the Zululand coastal plain
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: BH BrockettA pilot survey to determine sub-sample size (number of point observations per plot) for herbaceous species composition assessments, using a wheel-point apparatus applying the nearest-plant method, was conducted. Three plots differing in species composition on the Zululand coastal plain were... -
Research note: Calibrating a disc pasture meter to estimate grass fuel loads on the Zululand coastal plain
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: B.H. Brockett --- , Republic of South AfricaA disc meter was calibrated to estimate fuel load on the Zululand coastal plain. The regression model was valid for fuel load estimates within a disc height of 1–58 cm. The mean calibrated disc height was 11.8 cm. Estimated fuel... -
Comparison of the density and species composition of aquatic invertebrates found between the roots of Eichhornia crassipes plants from two coastal lakes in northern KwaZulu-Natal
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: A Viljoen DP Cyrus V WepenerThe aquatic invertebrates found between the roots of Eichhornia crassipes plants from Lakes Cubhu and Nsezi were analysed and compared with each other. Root samples in Lake Cubhu were dominated by Corophium triaenonyx and Caridina nilotica whilst root samples from... -
Aquatic avifauna of the coastal lakes of the Mhlathuze River system
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: DP CyrusThis paper provides the first attempt to bring together all published and unpublished data on the aquatic avifauna of Lakes Mzingazi, Nsezi, Cubhu and Mangeza, situated near Richards Bay in the lower reaches of the Mhlathuze River system. Whilst the... -
Available information on macroinvertebrates of the Mhlathuze coastal lakes: setting the ecological reserve (lake water requirements)
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: CF Mackay DP CyrusThis paper reviews current information on the macroinvertebrates of four coastal lakes in the Mhlathuze catchment of Zululand. The fauna are described in terms of the potential influence of lake level changes in response to increasing anthropogenic pressures for available... -
The icthyofauna of the Mhlathuze coastal lakes: some preliminary results
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: SP Weerts DP CyrusThe fish faunas of the four Mhlathuze coastal lakes and the lower river comprise a diverse assortment of over fifty marine, estuarine and freshwater species. Three freshwater species are endemic to KwaZulu-Natal and nine estuarine species are endemic to southern... -
A preliminary assessment of impacts on estuarine associated fauna resulting from an intra-basin transfer and fresh water abstraction from aquatic systems in the Richards Bay area of KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: D CyrusAn intra-basin transfer and the abstraction of water from aquatic systems in the Richards Bay area has led to the construction of six barriers which are restricting faunal movement, a reduction of flow to the Mhlathuze and Nhlabane estuaries and... -
Beacons in the limnological landscape
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: BR AllansonAn overview is given of a number of major developments in the limnology of South Africa, Zimbabwe and Namibia. None was possible without the involvement of enthusiastic investigators who, over some 70 years, stimulated the growth of freshwater research in... -
The distribution and habitat in the Knysna Estuary of the endemic South African mudsnail Hydrobia knysnaensis and the influence of intraspecific competition and ambient salinity on its abundance
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Rsk BarnesThe typical habitat of the rare, endemic South African mudsnail Hydrobia knysnaensis is the leaves of upper-shore Zostera capensis within high-salinity salt-marsh pools and channels. In the Knysna estuarine system, it is the numerically dominant member of a guild of... -
Phytoplankton and some abiotic features of El-Bardawil Lake, Sinai, Egypt
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: H Touliabah --- Department of Biology, Canada HM Safik --- Department of Botany, Faculty of Science, Egypt MM Gab-Allah --- Department of Botany, Faculty of Science, Egypt WD Taylor --- Department of Biology, CanadaEl-Bardawil Lake is a large coastal lagoon on the Mediterranean coast of Sinai, Egypt. Although it is shallow and oligotrophic, it is one of the most important lakes in Egypt as a source of good quality fish and a habitat... -
The effect of physico-chemical parameters on speciation of trace metals insediments from inland and coastal waters of Ghana
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: CA Biney --- , Burkina Faso R Asmah --- , GhanaThe speciation of cadmium, lead, copper, zinc, manganese and iron into exchangeable, carbonate, reducible and organic bound fractions was studied in sediments from coastal and freshwater environments in Ghana. This was relevant as the species in which metals are stored... -
Impact of drain water on water quality and eutrophication status of Lake Burullus, Egypt, a southern Mediterranean lagoon
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: EM Ali --- Department of Environmental Sciences, EgyptThe ecological and biological status of Lake Burullus was examined in 2006 to determine its water quality and eutrophication status in response to the quality and quantity of drain water entering it. The lake suffers from excessive nutrient concentrations. Chlorophyll... -
Californian Redwood (Sequoia sempervirens): A Possible Species for Timber Production in South Africa
Item type: Journal Article • Journal: South African Forestry Journal • Authors: B.A. Sesink --- Saasveld Forestry Research Centre,Californian redwood (Sequoia sempervirens) can be successfully grown in most of the forestry regions of South Africa. On suitable sites it can achieve growth rates in excess of 30 m3 per hectare per year. The relatively fast growth, good form... -
ZOOPLANKTON AND ESTUARINE RELICT (BENTHIC) FAUNA IN LAKE MZINGAZI, A FRESHWATER COASTAL LAKE OF NATAL
Item type: Journal Article • Journal: Southern African Journal of Child and Adolescent Mental Health • Authors: B.K. Fowles --- , South Africa C. G.M. Archibald --- , South AfricaLake Mzingazi, a natural, undisturbed freshwater coastal lake in the heart of the Richards Bay municipal area, is threatened by rapid urban and industrial growth. The previously unrecorded composition and distribution of zooplankton in the lake was studied during 1979... -
A RULE-BASED ECOSYSTEM MODEL FOR THE MANAGEMENT OF LAKE ST LUCIA
Item type: Journal Article • Journal: Southern African Journal of Child and Adolescent Mental Health • Authors: R.H. Taylor --- , South Africa B.P. Farm --- Dept. of Ecology and Behavioural Biology, United States of America A.M. Starfield --- Dept. of Ecology and Behavioural Biology, United States of AmericaLand transformations in the catchments of Lake St Lucia have altered the hydrology of the system and increased management is now needed to counteract these changes. There are several management options available, but prior to implementing them we must be... -
Oiled and injured African penguins Spheniscus demersus and other seabirds admitted for rehabilitation in the Western Cape, South Africa, 2001 and 2002
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: NJ Parsons LG UnderhillFollowing the Treasure oil spill incident in 2000 in which 19 000 African penguins Spheniscus demersus were oiled, there were no large spills in either 2001 or 2002. In spite of this, the Southern African Foundation for the Conservation of... -
Metabolic adaptations and reduced respiration of the copepod Calanoides carinatus during diapause at depth in the Angola-Benguela Front and northern Benguela upwelling regions
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: H Auel W Hagen W Ekau HM VerheyeStage C5 copepodids and adult females of the herbivorous copepod Calanoides carinatus were sampled in the Angola-Benguela frontal region and northern Benguela upwelling area off Namibia in February–March 2002, using a multiple opening/closing net system. Respiration rates of C5s collected... -
Birds and conservation significance of the Namib Desert's least known coastal wetlands: Baia and Ilha dos Tigres, Angola
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: RE Simmons A Sakko J Paterson A NzuziThe Ilha dos Tigres of Angola is the only sandy island off the coast of the 2 000km-long Namib Desert and it remains the least known coastal wetland on a desert coast rich in shorebirds. Two surveys of the Baia... -
Circulation patterns in the Delagoa Bight, Mozambique, and the influence of deep ocean eddies
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: T Lamont --- Oceans and Coasts Research, Department of Environmental Affairs, South Africa MJ Roberts --- Oceans and Coasts Research, Department of Environmental Affairs, South Africa RG Barlow --- , South Africa T Morris --- , South Africa MA van den Berg --- Oceans and Coasts Research, Department of Environmental Affairs, South AfricaAn investigation of the circulation patterns and thermohaline structures in the Delagoa Bight, Mozambique, was undertaken during May 2004, August 2004, April 2005, and April 2006, using hydrographic surveys, surface drifters and satellite imagery. Hydrographic and satellite data during May... -
Phytoplankton production and adaptation in the vicinity of Pemba and Zanzibar islands, Tanzania
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: R Barlow --- , South Africa T Lamont --- , South Africa M Kyewalyanga --- , Tanzania H Sessions --- Oceans and Coasts, Department of Environmental Affairs, South Africa M van den Berg --- Oceans and Coasts, Department of Environmental Affairs, South Africa F Duncan --- , South AfricaPhytoplankton production and physiology were investigated at six selected locations during a research cruise in early October 2007 in Tanzanian coastal waters. The dataset included photosynthesis– irradiance and active fluorescence parameters, phytoplankton absorption coefficients, and pigment concentrations. Primary production was... -
A hard-knock life: the foraging ecology of Cape cormorants amidst shifting prey resources and industrial fishing pressure
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MH Hamann --- DST/NRF Centre of Excellence at the Percy FitzPatrick Institute of African Ornithology, South Africa D Grémillet --- DST/NRF Centre of Excellence at the Percy FitzPatrick Institute of African Ornithology, South Africa PG Ryan --- DST/NRF Centre of Excellence at the Percy FitzPatrick Institute of African Ornithology, South Africa F Bonadonna --- , France CD van der Lingen --- Department of Agriculture, Forestry and Fisheries, South Africa L Pichegru --- DST/NRF Centre of Excellence at the Percy FitzPatrick Institute of African Ornithology, South AfricaOnce one of the most numerous seabirds of the Benguela upwelling system, the population of Cape cormorants Phalacrocorax capensis has decreased by 60% in the past three decades and the species is listed as Near Threatened. Declines in prey availability... -
Upwelling and ocean structures off Algoa Bay and the south-east coast of South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: WS Goschen --- South African Environmental Observation Network (SAEON), South Africa EH Schumann --- Department of Geosciences, South Africa KS Bernard --- South African Environmental Observation Network (SAEON), South Africa SE Bailey --- South African Environmental Observation Network (SAEON), South Africa SHP Deyzel --- South African Environmental Observation Network (SAEON), South AfricaAs the Agulhas Current flows along the south-east coast of South Africa, a number of processes operate that bring cold, deep water up onto the narrow shelf. As a consequence, upwelling along the coastline is enhanced farther southward and downstream... -
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... -
Shallow waters: social science research in South Africa's marine environment
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: M Sowman --- Environmental Evaluation Unit, Department of Environmental & Geographical Science, South Africa D Scott --- School of Built Environment and Development Studies, Howard College Campus, South Africa L J F Green --- Department of Social Anthropology, South Africa M M Hara --- Institute for Poverty, Land and Agrarian Studies, South Africa M Hauck --- Environmental Evaluation Unit, Department of Environmental & Geographical Science, South Africa K Kirsten --- Department of Environmental and Geographical Science, South Africa B Paterson --- Marine Research Institute, South Africa S Raemaekers --- Environmental Evaluation Unit, Department of Environmental & Geographical Science, South Africa K Jones --- Environmental Evaluation Unit, Department of Environmental & Geographical Science, South Africa J Sunde --- Environmental Evaluation Unit, Department of Environmental & Geographical Science, South Africa J K Turpie --- Anchor Environmental, South AfricaThis paper provides an overview of social science research in the marine environment of South Africa for the period 1994–2012. A bibliography based on a review of relevant literature and social science projects funded under the SEAChange programme of the... -
The effect of anthropogenic disturbances on population structure and regeneration of Scorodophloeus fischeri and Manilkara sulcata in coastal forests of Tanzania
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: C Mligo --- Department of Botany, Tanzania HVM Lyaruu --- Department of Botany, Tanzania HJ Ndangalasi --- Department of Botany, TanzaniaScorodophloeus fischeri (Fabaceae, subfamily Caesalpinoideae) and Manilkara sulcata (Sapotaceae) are examples of tropical African hardwood species and are endemic to East African coastal forests. These plant species are threatened by human activities beyond natural recovery in some forests. This study... -
Technical efficiency of small-scale fishing households in Tanzanian coastal villages: an empirical analysis
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: JenniferK Sesabo RichardSJ TolThe effort to conserve fisheries resources and improve the welfare of small-scale fishing households is an important objective of poverty reduction strategies in Tanzania. The success of such strategies depends on both the diversity and the level of efficiency within... -
Short-term variability in alongshore winds and temperature off Swakopmund, Namibia, during a non-upwelling event in 1998–1999
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: CH Bartholomae E HagenSwakopmund is a popular coastal resort in Namibia, especially during the summer holiday season when daily sea temperatures can fluctuate several degrees in a short period. Hourly measurements of the near-bottom water temperature were collected off the Swakopmund Jetty to... -
Are melanistic populations of the Karoo girdled lizard, Karusasaurus polyzonus, relics or ecotypes? A molecular investigation
Item type: Journal Article • Journal: African Zoology • Authors: Hanlie M. Engelbrecht --- Department of Botany and Zoology, South Africa P. le Fras N. Mouton --- Department of Botany and Zoology, South Africa Savel R. Daniels --- Department of Botany and Zoology, South AfricaIt has been proposed that melanism in cordylids evolved in response to a single climatic event and that melanistic populations of Karusasaurus polyzonus are relictual. This study investigates the genetic relationships of melanistic and non-melanistic populations of K. polyzonus along... -
‘Social pain and social death’: poor white stigma in post-apartheid South Africa, a case of West Bank in East London
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Octavia Sibanda --- Fort Hare Institute of Social and Economic Research, University of Fort Hare,This article looks at poor white stigma in post-apartheid South Africa. Drawing on my ethnographic engagement with my informants, I developed this article as a part of my broader argument that explores the complex nature of white poverty in South... -
Plant selection and grazing activity of the invasive snail Theba pisana in coastal Algoa Bay, South Africa
Item type: Journal Article • Journal: African Zoology • Authors: Sean van Elden --- DST–NRF Research Chair in Shallow Water Ecosystems, South Africa Nelson AF Miranda --- DST–NRF Research Chair in Shallow Water Ecosystems, South Africa Renzo Perissinotto --- DST–NRF Research Chair in Shallow Water Ecosystems, South Africa Janine B Adams --- Department of Botany, South AfricaThe land snail Theba pisana is a coastal species native to the Mediterranean but has been introduced to regions all over the world, including South Africa and Australia, where it is considered a pest. This study examines the diet of... -
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... -
Annual cycle of the upper-ocean circulation and properties in the tropical western Indian Ocean
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: M Manyilizu --- Department of Oceanography, South Africa P Penven --- Ifremer, Univ. Brest, CNRS, IRD, Laboratoire dʹOcéanographie Physique et Spatiale (LOPS), France CJC Reason --- Department of Oceanography, South AfricaA regional ocean model was used to simulate the annual cycle of the upper-ocean dynamics and its influence on ocean properties in the tropical western Indian Ocean. Surface winds and heat fluxes from the National Centers for Environmental Prediction (NCEP)... -
Sustainable tourism development and the world heritage status of the Wadden Sea: The case of Terschelling
Item type: Journal Article • Journal: • Authors: Akke Folmer --- Research Group Marine Wetlands Studies, Stenden University of Applied Sciences, Leeuwarden, The Netherlands Hans Revier --- Research Group Marine Wetlands Studies, Stenden University of Applied Sciences, Leeuwarden, The Netherlands Tamara Cupido --- Research Group Marine Wetlands Studies, Stenden University of Applied Sciences, Leeuwarden, The NetherlandsNational governments and regions make great efforts to obtain international recognition for their natural heritage, for instance through UNESCO’s World Heritage Sites list. Since June 2009, the Dutch Wadden Sea has been on the World Heritage List. Our study investigates... -
Spatial metrics effect of forest fragmentation on forest bird abundance and site occupancy probability: the influence of patch size and isolation
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Robert B Modest --- Department of Wildlife Management, Tanzania Shombe N Hassan --- Department of Wildlife Management, Tanzania Alfan A Rija --- Department of Wildlife Management, TanzaniaThe persistence of species taxa within fragmented habitats is dependent on the source–sink metapopulation processes, and forest patch size and isolation are key factors. Unveiling species–patch area and/or species–patch isolation relationships may help provide crucial information for species and landscape... -
Sustainable tourism development and the world heritage status of the Wadden Sea: The case of Terschelling
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Akke Folmer --- Research Group Marine Wetlands Studies, The Netherlands Hans Revier --- Research Group Marine Wetlands Studies, The Netherlands Tamara Cupido --- Research Group Marine Wetlands Studies, The NetherlandsNational governments and regions make great efforts to obtain international recognition for their natural heritage, for instance through UNESCO’s World Heritage Sites list. Since June 2009, the Dutch Wadden Sea has been on the World Heritage List. Our study investigates... -
Survival and long-term growth of eucalypts on semi-arid sites in a Mediterranean climate, South Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Ben du Toit --- Department of Forest and Wood Science, South Africa Gideon F Malherbe --- Department of Forest and Wood Science, South Africa Anton Kunneke --- Department of Forest and Wood Science, South Africa Thomas Seifert --- Department of Forest and Wood Science, South Africa C Brand Wessels --- Department of Forest and Wood Science, South AfricaFour experiments were established on the semi-arid west coast plain of South Africa during the 1990s. The trails tested the survival and growth of several eucalypt species and hybrids, some of which were established in a climate that is drier... -
Modelling the impacts of semi-intensive aquaculture on the foodweb functioning of a Nile Delta coastal lake
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: M Bocci --- Department of Environmental Sciences, Informatics and Statistics, Italy R Pastres --- Department of Environmental Sciences, Informatics and Statistics, Italy S Kholeif --- National Institute of Oceanography and Fisheries (NIOF), Egypt D Dalla Barba --- Department of Environmental Sciences, Informatics and Statistics, Italy D Brigolin --- Department of Environmental Sciences, Informatics and Statistics, ItalyNutrient loadings are an important component of aquaculture impacts as they can lead to cascade effects at the ecosystem level. An evaluation of these effects on foodweb functioning is presented and discussed for the case study of Lake Burullus in... -
Focusing on monofilament nets while overlooking the priorities of artisanal fisheries governance in Senegal
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: D Thiao --- Centre de Recherches Océanographiques de Dakar-Thiaroye (CRODT), Senegal A Mbaye --- Centre de Recherches Océanographiques de Dakar-Thiaroye (CRODT), Senegal M Dème --- Centre de Recherches Océanographiques de Dakar-Thiaroye (CRODT), Senegal HD Diadhiou --- Centre de Recherches Océanographiques de Dakar-Thiaroye (CRODT), SenegalDespite its legal prohibition since 1998, the nylon monofilament net is still widely used in Senegalese artisanal fisheries. To achieve a complete ban on monofilament use, it is necessary to understand the main arguments for its continued use and what... -
Reflection on the first five years of South Africa’s Acoustic Tracking Array Platform (ATAP): status, challenges and opportunities
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: PD Cowley --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa RH Bennett --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa A-R Childs --- Department of Ichthyology and Fisheries Science, South Africa TS Murray --- South African Institute for Aquatic Biodiversity (SAIAB), South AfricaThe Acoustic Tracking Array Platform (ATAP) is a marine science programme that monitors the movements and migrations of inshore marine animals along the South African coastline. Acoustically tagged animals are monitored by an expanded network of approximately 100 automated data-logging... -
Mesozooplankton of the Kosi Bay lakes, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: HL Jerling --- Department of Zoology and Coastal Research Unit of Zululand, South Africa SP Weerts --- Department of Zoology and Coastal Research Unit of Zululand, South AfricaThe Kosi coastal lake system, a chain of four interconnected basins, is located in the subtropical north-eastern corner of South Africa. Little information is available on zooplankton of the system and the main aim of this study is to report... -
A new species of Scolecoseps (Reptilia: Scincidae) from coastal north-eastern Mozambique
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Luke Verburgt --- , , South Africa Ursula K. Verburgt --- , , South Africa William R. Branch --- , South AfricaSeven specimens of Scolecoseps Loveridge, 1920 from the vicinity of Palma on the north coast of Mozambique are compared morphologically with other known material of this genus. The new material can be distinguished morphologically from all other Scolecoseps by the... -
Review of progress with integrated coastal management in South Africa since the advent of democracy
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: M Sowman --- Environmental and Geographical Science Department, South Africa N Malan --- Branch: Oceans and Coasts, Department of Environmental Affairs (DEA), South AfricaWorldwide, coastal environments are recognised as complex systems of immense biophysical, socioeconomic and cultural value. In South Africa, the promulgation of the Coastal White Paper in 2000, and the Integrated Coastal Management (ICM) Act of 2008, signalled a significant paradigm... -
Soil taxonomy proposals for acid sulfate soils and subaqueous soils raised by the 8th International Acid Sulfate Soils Conference
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Barret M Wessel --- Department of Environmental Science and Technology, USA John M Galbraith --- Department of Crop and Soil Environmental Sciences, USA Mark H Stolt --- Department of Natural Resources Science, USA Martin C Rabenhorst --- Department of Environmental Science and Technology, USA Delvin S Fanning --- Department of Environmental Science and Technology, USA Maxine J Levin --- USDA-Natural Resources Conservation Service, USAThe 8th International Acid Sulfate Soils Conference presented examples and discussions for classification of ‘acid sulfate soils’ and related issues for ‘subaqueous soils’. When these soils are disturbed or exposed, the sulfides (predominantly pyrite) react with oxygen to produce sulfuric... -
Dynamics of water exchange and salt flux in the Macuse Estuary, central Mozambique, southern Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: LLAJ Miguel --- Post-Graduate Program in Geology (PPGl), Brazil JWA Castro --- Post-Graduate Program in Geology (PPGl), Brazil SFA Machava --- Department of Oceanography, MozambiqueStudies of water-particle flow dynamics in shallow estuarine systems show that tidal currents control water exchange, salt flux and residence time. We used the 3D Estuary, Lake and Coastal Ocean Model (ELCOM) to estimate the dynamics of tidal currents, salt... -
Localised intermittent upwelling intensity has increased along South Africa’s south coast due to El Niño–Southern Oscillation phase state
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MI Duncan --- Department of Ichthyology and Fisheries Science, South Africa NC James --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa AE Bates --- Department of Ocean Sciences, Canada WS Goschen --- Institute for Coastal and Marine Research, Ocean Sciences Campus, South Africa WM Potts --- Department of Ichthyology and Fisheries Science, South AfricaThe El Niño–Southern Oscillation (ENSO) phase state is reported to drive interannual variability in sea temperatures along South Africa’s south coast through its influence on wind-induced upwelling processes. Whether ENSO drives the intensity of localised, abrupt, intermittent upwelling is less... -
Spatial modelling of cumulative human pressure in the tropical coastscape of Zanzibar, Tanzania
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: ZA Khamis --- Department of Geography and Geology, Finland R Kalliola --- Department of Geography and Geology, Finland N Käyhkö --- Department of Geography and Geology, FinlandCoastal landscapes and seascapes (‘coastscapes’) are under immense anthropogenic pressures emanating from multiple human activities. We applied spatial modelling to characterise the cumulative pressures in the coastscape of Zanzibar’s main island Unguja (hereafter Zanzibar), in the western Indian Ocean. We... -
Roseate Terns Sterna dougallii on the southeast coast of South Africa: information on moult and migratory status
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Anthony J Tree --- Port Alfred, South Africa Maëlle Connan --- Department of Zoology, Marine Apex Predator Research Unit, Institute for Coastal and Marine Research, South Africa Philip A Whittington --- Department of Zoology, South AfricaDetermining the migratory status of seabird populations is crucial for addressing conservation concerns. The Roseate Tern Sterna dougallii is considered endangered in South Africa in view of its small breeding population and the threats to eggs and chicks. Earlier works... -
Salt marsh elevation and responses to future sea-level rise in the Knysna Estuary, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: JL Raw --- DST/NRF Research Chair in Shallow Water Ecosystems, Department of Botany, South Africa T Riddin --- DST/NRF Research Chair in Shallow Water Ecosystems, Department of Botany, South Africa J Wasserman --- DST/NRF Research Chair in Shallow Water Ecosystems, Department of Botany, South Africa TWK Lehman --- DST/NRF Research Chair in Shallow Water Ecosystems, Department of Botany, South Africa TG Bornman --- Institute for Coastal and Marine Research, Nelson Mandela University, South Africa JB Adams --- DST/NRF Research Chair in Shallow Water Ecosystems, Department of Botany, South AfricaSea-level rise is a significant threat to salt marshes. However, these habitats can respond by increasing their relative elevation, or by migrating into adjacent areas. Here we provide the first report on surface elevation change for salt marsh at the... -
Response of the barrier island coastal region of southwestern Nigeria to climate and non-climate forcing
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: IB Danladi --- Department of Geological Engineering, Turkey M Gül --- Department of Geological Engineering, Turkey E Ateş --- Vocational School of Ayaş, TurkeyDespite threats emanating from the influence of climate and non-climate forcing on the barrier island coastal region of southwestern Nigeria, the extent of the coastal erosion is poorly understood. We report evidence of coastal erosion and sediment accumulation in the... -
Ecosystem service values of sediment generation and entrapment by marginal coral reefs at Sodwana Bay, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: SCS Laing --- , South Africa MH Schleyer --- , South Africa JK Turpie --- , South AfricaCoral reefs provide a multitude of goods and services, some of which are difficult to value due to their intangible nature and the absence of markets to ascribe their relative worth. The coral reefs of Sodwana Bay on the northeast... -
Systematics of Hyperolius mitchelli Loveridge, 1953 and Hyperolius rubrovermiculatus Schiøtz, 1975 (Anura: Hyperoliidae) and assignment of populations from northern Tanzania
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Beryl A Bwong --- Zoology Department, National Museums of Kenya, Kenya Christopher D Barratt --- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Germany Simon P Loader --- Department of Life Sciences, Natural History Museum, United Kingdom Joash O Nyamache --- Zoology Department, National Museums of Kenya, Kenya Michele Menegon --- Science Museo of Trento, Via della Scienza e del lavoro, Italy Patrick K Malonza --- Zoology Department, National Museums of Kenya, Kenya Peter Nagel --- Department of Environmental Sciences, University of Basel, Switzerland Lucinda P Lawson --- Department of Biological Sciences, University of Cincinnati, United StatesThe taxonomic validity of the East African reed frogs Hyperolius mitchelli Loveridge, 1953 and Hyperolius rubrovermiculatus Schiøtz, 1975 has been questioned in the literature, with the latter having been recognised as a distinct lineage, but also synonymised as a colour... -
Cross-shelf movement of Chrysaora fulgida (Scyphozoa; Discomedusae) off Namibia inferred from stable isotopes (δ15N and δ13C)
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: H Skrypzeck --- , South Africa CD van der Lingen --- , South Africa MJ Gibbons --- , South AfricaLarge and small specimens of two species of metagenic Scyphozoa (true jellyfishes) can be found in nearshore waters off central Namibia throughout the year. Whereas populations of Chrysaora africana are largely restricted to inshore waters, C. fulgida occurs across the... -
Three-dimensional modelling of the circulation in False Bay, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: F Coleman --- , South Africa GPJ Diedericks --- , South Africa AK Theron --- , South Africa J Lencart e Silva --- , United KingdomFalse Bay is the largest coastal embayment along South Africa’s coastline. Despite notable contributions of various historical observational studies on the circulation within False Bay and the associated physical processes driving these flows, there remains significant uncertainty largely because the... -
Bull shark Carcharhinus leucas recruitment into the St Lucia Estuary, South Africa, after prolonged mouth closure, and the first observation of a neonate bull shark preyed on by a Nile crocodile Crocodylus niloticus
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: R Daly --- , South Africa P Le Noury --- , United Kingdom TN Hempson --- , Mozambique M Ziembicki --- , Mozambique JM Olbers --- , South Africa GM Brokensha --- , South Africa BQ Mann --- , South AfricaEstuaries provide critical nursery habitat for juvenile bull sharks Carcharhinus leucas, as they have the ability to withstand a wide range of salinities. St Lucia is the largest estuarine lake in Africa and was once a key nursery for bull... -
Microplastics pollution in the sediments of creeks and estuaries of Kenya, western Indian Ocean
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: JO Kerubo --- , Kenya AWN Muthumbi --- , Kenya JM Onyari --- , Kenya D Robertson-Andersson --- , South Africa E Kimani --- , KenyaMicroplastic pollution has been recognised as a global threat in marine environments and a danger to prey, predators and humans. Yet, there have been few studies in the western Indian Ocean, specifically along the Kenyan coast, which makes it difficult... -
Temporal and spatial variation of the molluscan community structure in Oualidia Lagoon, Moroccan Atlantic coast
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: F El Asri --- , Morocco A Errhif --- , Morocco MN Tamsouri --- , Morocco H Nhhala --- , Morocco M Maanan --- , France H Zidane --- , MoroccoThe molluscan assemblages inhabiting the coastal waters of Oualidia Lagoon, Morocco, were studied during winter and summer of 2013. The taxonomic composition and diversity were determined at 43 sample sites. Thirty-four mollusc taxa were recorded in total, including 12 species... -
Sponges as simple biomonitoring tools for trace element pollution in marine environments: insights from a Kenyan study focused on the leaf sponge Phyllospongia foliascens
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: BO Ohowa --- , Kenya LI Kiteresi --- , Kenya VW Wanjeri --- , Kenya SM Mwamburi --- , Kenya SL Tunje --- , KenyaThe potential of the marine leaf sponge Phyllospongia foliascens as a simple biomonitor of trace element pollution was assessed. The concentrations of arsenic (As), cadmium (Cd), chromium (Cr), copper (Cu), manganese (Mn) and zinc (Zn) in sediments and in P... -
The ecology of coastal wetland ponds created by diamond mining in southern Namibia. 1. Physical conditions
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: L Maritz --- , South Africa D Pillay --- , South Africa GM Branch --- , South AfricaCoastal diamond mining in southern Namibia involves constructing seawalls to hold the sea at bay, and seaward accretion of the shoreline by up to 800 m opens what was previously the surf zone for excavation and extraction of bedrock alluvial... -
Rainfall-driven nutrient loading affects coastal phytoplankton in the southwestern Indian Ocean: a lagoon at Mauritius Island
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: M Soondur --- , Republic of Mauritius R Boojhawon --- , Republic of Mauritius R Lowe --- , Australia D Kaullysing --- , Republic of Mauritius BE Casareto --- , Japan Y Suzuki --- , Japan R Bhagooli --- , Republic of MauritiusThis study aimed to test the effects of rainfall-driven nutrient loading on the microphytoplankton dynamics in the shallow water at Trou aux Biches lagoon on the northwest coast of Mauritius. Changes in density, diversity and estimated productivity of microphytoplankton were... -
Characteristics and sociocultural impacts of small pelagic fishing by migrant fishers in Benin, West Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: S Ahouansou Montcho --- Université Nationale d’Agriculture, Bénin KV Salako --- University of Abomey-Calavi, Benin FJ Chadare --- Université Nationale d’Agriculture (UNA), Benin SC Gnansounou --- University of Abomey-Calavi, Benin Z Sohou --- Institut de Recherches Halieutiques et Océanologiques du Bénin (IRHOB), Bénin P Failler --- University of Portsmouth, United Kingdom R Glèlè Kakaï --- University of Abomey-Calavi, Benin AE Assogbadjo --- University of Abomey-Calavi, BeninSmall pelagic fish species contribute substantially to the food security and livelihoods of local communities in developing countries. In West Africa, and particularly in Benin, small pelagic fisheries attract many migrant fishers who are key actors in the sector. This... -
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... -
Comparisons of macrofaunal communities occupying shores across the full particle-size spectrum reveals pebble beaches to be a distinct coastal habitat type
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: A Robbins --- University of Cape Town, South Africa CL Griffiths --- University of Cape Town, South Africa L Nefdt --- University of Cape Town, South AfricaIntertidal research has focused primarily on very fine to coarse sandy beaches (grain size <1 mm) and on rocky shores, while shores with grain sizes of 1-256+ mm have rarely been studied. Within South Africa, few published accounts describe the... -
A baseline assessment of coastal pH variability in a temperate South African embayment: implications for biological ocean acidification research
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: C Edworthy --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa WM Potts --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa S Dupont --- University of Gothenburg, Sweden MI Duncan --- Rhodes University, South Africa TG Bornman --- Institute for Coastal and Marine Research, Nelson Mandela University, South Africa NC James --- South African Institute for Aquatic Biodiversity (SAIAB), South AfricaCompared with the open ocean, knowledge of pH variability in coastal waters is rudimentary, especially in Africa. This is concerning as quantifying local pH conditions is critical when assessing the response of coastal species to future ocean acidification scenarios. The... -
Analysis of intraspecific colour variation in the fossorial Coastal Legless Lizard, Microacontias litoralis (Scincidae: Acontiinae)
Item type: Journal Article • Journal: The Journal of the Herpetological Association of Africa • Authors: PhomoloL. Mashinini --- Transvaal Museum, South Africa Neil.J. L. Heideman --- University of the Free State, South Africa P. le FrasN. Mouton --- Stellenbosch University, South AfricaAn analysis of intraspecific variation in the fossorial skink Microacontias litoralis revealed that orange‐coloured and melanistic individuals co‐occur at several localities. Body colour was found to be independent of sex and body size. Both orange‐coloured and melanistic in situ embryos... -
Wind- and eddy-driven upwelling over submarine canyons inshore of the northern Agulhas Current
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: G Rautenbach --- Nelson Mandela University, South Africa J Hermes --- , South Africa I Halo --- , South Africa T Morris --- , South Africa J Veitch --- , South AfricaThe iSimangaliso Wetland Park, located along the coastline of northern KwaZulu-Natal, hosts South Africa’s only subtropical coral reef system. Episodic upwelling events are observed inshore and at the heads of Diepgat, Leadsman and Leven canyons within the iSimangaliso Wetland Park... -
The road towards effective governance and management of marine protected areas in South Africa: evolving policies, paradigms and processes
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: SP Kirkman --- , South Africa P Kowalski --- , South Africa BQ Mann --- Oceanographic Research Institute (ORI), South Africa GM Branch --- University of Cape Town, South Africa MG van der Bank --- South African National Biodiversity Institute (SANBI), South Africa KJ Sink --- Institute for Coastal and Marine Research, Nelson Mandela University, South Africa P Fielding --- , South Africa JB Mann-Lang --- Oceanographic Research Institute (ORI), South Africa MC Pfaff --- University of Cape Town, South Africa D Kotsedi --- , South Africa R Adams --- , South Africa S Dlulisa --- , South Africa SL Petersen --- , MadagascarThe efficacy of marine protected areas (MPAs) depends on their governance and management. We review their history in South Africa and recognise four periods. Period 1 (1964–1994) provided initial protection but was based on exclusionary, preservationist policies, was ad hoc... -
Analysing the socioeconomic characteristics of fisheries-dependent communities in the context of the blue economy in Ghana
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Alhassan Abdul-Wakeel Karakara --- University of Cape Coast, Ghana James Atta Peprah --- University of Cape Coast, Ghana Isaac Dasmani --- University of Cape Coast, GhanaFor centuries resource economists have persistently debated and discussed the potential of the green economy and how it should be protected and used sustainably. Most studies to date on the economic value of natural resources have thus concentrated on the... -
Long-term trends from Citizen Scientists: 24 years of breeding success data of African Oystercatchers Haematopus moquini in the Garden Route
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: B Arendse --- , South Africa P Dawson --- , South Africa B Mels --- , Ireland M Brown --- University of KwaZulu Natal, South AfricaLong-term data on breeding success in beach-nesting birds in southern Africa are scarce. Citizen science projects have risen to the forefront of large dataset collection efforts globally, with several local projects helping us unpack long-term trends for species in southern... -
South African coastal outlets and estuaries: what defines an estuary versus an outlet?
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Alan K Whitfield --- South African Institute for Aquatic Biodiversity, South AfricaThis review examines the transition of coastal micro-outlets to micro-estuaries, to fully functional and species rich estuaries of various types. The definitions of the different types of microsystems are reviewed and it is apparent that an estuary is not simply... -
Farmers’ choices and factors driving adoption of climate change adaptation strategies in saline coastal area of Bangladesh
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Mst. Esmat Ara Begum --- Bangladesh Agricultural Research Institute, Bangladesh Md. Abdur Rashid --- Bangladesh Agricultural Research Institute, Bangladesh Mohammad Ismail Hossain --- Bangladesh Agricultural University, Bangladesh Md. Anower Hossain --- Bangladesh Agricultural Research Institute, Bangladesh Md. Harunor Rashid --- Bangladesh Agricultural Research Institute, Bangladesh Mustafa Kamal Shahadat --- Bangladesh Agricultural Research Institute, Bangladesh Mohammed Mainuddin --- Water Security Program, CSIRO Environment, AustraliaGrowing climate change adaptation issues are driving the demand for efficient solutions in the agriculture sector, which will improve farmers’ livelihoods and economic situations. This study examined the perceptions of major climate risks and factors driving adoption of climate adaptation... -
The impact of Eucalyptus plantations on herpetofaunal diversity, Maputo National Park, Mozambique
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: PR Jordaan --- Tshwane University of Technology, South Africa A Wilken --- University of Pretoria, South Africa X Combrink --- Tshwane University of Technology, South AfricaExotic afforestation has proven detrimental to biodiversity in general, however only a few studies documenting the impact of timber plantations on herpetofaunal diversity have been published within a southern African context. To determine if variations in herpetofaunal species assemblages could... -
Use and management of seagrass ecosystems in southwestern Madagascar
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: F Rakotonjanahary --- Institut Halieutique et des Sciences Marines (IH.SM), University of Toliara, Madagascar C Rakotomahazo --- Institut Halieutique et des Sciences Marines (IH.SM), University of Toliara, Madagascar J Nirinamamiko --- Institut Halieutique et des Sciences Marines (IH.SM), University of Toliara, Madagascar T Razakarisoa --- Institut Halieutique et des Sciences Marines (IH.SM), University of Toliara, Madagascar GGB Todinanahary --- Institut Halieutique et des Sciences Marines (IH.SM), University of Toliara, Madagascar T Lavitra --- Institut Halieutique et des Sciences Marines (IH.SM), University of Toliara, Madagascar G Lepoint --- UR FOCUS, University of Liège, Belgium MA Vanderklift --- CSIRO Environment, Indian Ocean Marine Research Centre, Australia L Ranivoarivelo --- Institut Halieutique et des Sciences Marines (IH.SM), University of Toliara, MadagascarMadagascar’s seagrass meadows are among the least-studied ecosystems in the western Indian Ocean region. To facilitate sustainable management, understanding the traditional uses of seagrass areas in relation to current management policies is necessary. This study assessed the uses of, and... -
Movement and growth of the spotted gully shark Triakis megalopterus in South African waters
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: BQ Mann --- Oceanographic Research Institute (ORI), South Africa GL Jordaan --- Oceanographic Research Institute (ORI), South Africa WN Dalton --- Oceanographic Research Institute (ORI), South Africa R Daly --- Oceanographic Research Institute (ORI), South Africa M Soekoe --- Reel Science Coalition, South Africa WM Potts --- Rhodes University, South Africa MJ Smale --- Zoology Department and Institute for Coastal and Marine Research, Nelson Mandela University, South Africa L Swart --- Fisheries and the Environment (DFFE), South AfricaThe movement and growth of spotted gully sharks Triakis megalopterus (family Triakidae) along the coast of South Africa were investigated using external dart tagging. Of a total of 7 211 sharks tagged, 657 (9.1%) were recaptured over a 37-year period,... -
Spatial patterns and environmental drivers of demersal fish assemblages in the Swartkops and Sundays estuarine to marine seascapes, South Africa
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: P Nodo --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa AR Childs --- Rhodes University, South Africa P Pattrick --- Nelson Mandela University, South Africa NC James --- South African Institute for Aquatic Biodiversity (SAIAB), South AfricaEstuaries are often observed as the boundary between the ocean and the river, separating coastal environments, rather than being seen as a continuum. Owing to insufficient research on demersal fish communities across nearshore marine to estuarine habitats, particularly in South... -
To move or not? Tourists’ perceptions and management considerations of a beached whale carcass in a South African national park and marine protected area
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MKS Smith --- , South Africa GS Penry --- Institute for Coastal and Marine Research, Nelson Mandela University, South Africa MM Mokhatla --- , South AfricaThe handling of beached cetacean carcasses requires social, legal, financial, ecological and logistical considerations. However, limited research on the topic hinders informed decision-making. A large humpback whale carcass that washed ashore at a South African marine protected area (MPA) provided... -
Cross-realm biodiversity profile of the South African coastal zone
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: LR Harris --- Institute for Coastal and Marine Research, Nelson Mandela University, South Africa JB Adams --- Institute for Coastal and Marine Research, Nelson Mandela University, South Africa A Dayaram --- Kirstenbosch Research Centre, South African National Biodiversity Institute (SANBI), South Africa LV Dunga --- Institute for Coastal and Marine Research, Nelson Mandela University, South Africa N Job --- Kirstenbosch Research Centre, South African National Biodiversity Institute (SANBI), South Africa SP Kirkman --- Institute for Coastal and Marine Research, Nelson Mandela University, South Africa SJ Lamberth --- Institute for Coastal and Marine Research, Nelson Mandela University, South Africa MC Pfaff --- University of Cape Town, South Africa JL Raw --- Institute for Coastal and Marine Research, Nelson Mandela University, South Africa GM Rishworth --- Institute for Coastal and Marine Research, Nelson Mandela University, South Africa A Robbins --- Institute for Coastal and Marine Research, Nelson Mandela University, South Africa KJ Sink --- Institute for Coastal and Marine Research, Nelson Mandela University, South Africa AL Skowno --- Kirstenbosch Research Centre, South African National Biodiversity Institute (SANBI), South Africa H van Deventer --- Council for Scientific and Industrial Research (CSIR), South Africa L van Niekerk --- Institute for Coastal and Marine Research, Nelson Mandela University, South AfricaSouth Africa’s coast is 3 113 km long and includes microtidal shores that experience semi-diurnal tides and mostly high wave energy. From west to east, the cool Benguela Current and the warm Agulhas Current drive steep gradients in climate and... -
Evaluating the histopathology, condition index and stress-on-stress response of caged brown mussels Perna perna for monitoring marine coastal pollution in Senegal
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: F Tabane --- Centre Régional de Recherche en Écotoxicologie et Sécurité Environnementale (CERES-Locustox), Unité Biologie, Senegal F Cazier --- Centre Commun de Mesures, Université du Littoral Côte d’Opale, France D Dewaélé --- Centre Commun de Mesures, Université du Littoral Côte d’Opale, France K Hylland --- University of Oslo, Norway CT Ba --- Université Cheikh Anta Diop, Senegal M Fall --- Université Cheikh Anta Diop, SenegalThis study is the first in a coastal West African country to evaluate the histopathology, condition index and stress-on-stress response time of caged brown mussels Perna perna for use in pollution monitoring of coastal ecosystems. Perna perna collected from an... -
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... -
Effects of diamond mining on sandy beaches in southern Namibia – the use of Tylos granulatus (Isopoda: Oniscidea) as an indicator species
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: K Hutchings --- , South Africa A Rees --- , South Africa A Pulfrich --- , South Africa BM Clark --- , South AfricaSandy beaches provide vital ecosystem services and support diverse ecological communities but are increasingly threatened by anthropogenic pressures. In particular, intertidal mining disrupts sandy beaches and challenges their resilience, yet these ecosystems retain some capacity for environmental recovery. This study... -
Growth patterns and condition index of rock oysters Saccostrea cucullata in relation to river influence in southeastern Madagascar
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: M Masimana --- Institut d’Enseignement Supérieur d’Anôsy, Université de Toliara, Madagascar A Andrisoa --- Aix-Marseille University, CNRS, IRD, INRAE, CEREGE, FranceSaccostrea cucullata is the dominant species of rock oyster (family Ostreidae) in southeastern Madagascar. Despite its economic and ecological importance, information on its biology and ecology is scarce. This study investigated the growth, shell length–weight relationship, and condition index (tissue... -
Analysis of wave energy distribution in the Gulf of Guinea based on reanalysis data from 1993 to 2019
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: G Dingong --- College of Marine Living Resource Sciences and Management, Shanghai Ocean University, China F Bonou --- International Chair of Physics, Mathematics and Applications, University of Abomey-Calavi, Benin Z Sohou --- International Chair of Physics, Mathematics and Applications, University of Abomey-Calavi, BeninThis study examined the geographical and seasonal distribution of wave parameters (significant height, period, direction) and wave energy in the Gulf of Guinea using MFWAM (Météo-France WAve Model) reanalysis data from 1993 to 2019. The model was validated utilising satellite,... -
Using DNA barcoding to identify the early life history stages of demersal coastal fishes in shallow nearshore and estuarine benthic habitats of Algoa Bay
Item type: Journal Article • Journal: African Zoology • Authors: P Nodo --- South African Institute for Aquatic Biodiversity, South Africa P Pattrick --- Nelson Mandela University, South Africa A-R Childs --- South African Institute for Aquatic Biodiversity, South Africa NC James --- South African Institute for Aquatic Biodiversity, South AfricaThe accurate identification of early life history stages of fishes, including larval and transformation stages to species level, is critical in spatial and temporal studies of coastal fish assemblages. This enables a better understanding of species-specific settlement patterns, nursery habitat...