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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... -
Influence of leguminous and non‐leguminous woody plants on the herbaceous layer and soil under varying competition regimes in mixed Bushveld1
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: G.N Smit --- Department of Agriculture, Republic of South Africa J.S. Swart --- Department of Agriculture, Republic of South AfricaFive plots on sandy soil were thinned to differing tree densities. Three subhabitats were distinguished, viz. under leguminous trees, under non‐leguminous trees, and between tree canopies. Soil under both leguminous and non‐leguminous trees was richer in nutrients (% total N,... -
Browse production and leaf phenology of some trees and shrubs in different Colophospermum mopane savanna communities
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: B. Dekker --- Department of Agriculture, Republic of South Africa G.N. Smit --- Department of Agriculture, Republic of South AfricaLeaf dry mass (DM) at peak biomass was estimated for different plant communities in a semi‐arid savanna. These estimates included the total leaf DM, as well as estimates of the leaf DM at browsing heights of 1.5 m, 2.0 m... -
Testing the applicability of the SASS5 scoring procedure for assessing wetland health: a case study in the KwaZulu-Natal midlands, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Rebecca Bowd DonovanC Kotze CraigD Morris NevilW QuinnA study was undertaken between 29th January and 17th February 2004 to test the applicability of the South African Scoring System Version 5 (SASS5) scoring and calculation procedure in nutrient-enriched palustrine wetlands in the midlands of KwaZulu-Natal, South Africa. Four... -
A preliminary survey and analysis of the spatial distribution of aquatic invertebrates in the Okavango Delta, Botswana
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: HelenF Dallas Belda MosepeleThe spatial distribution of aquatic macroinvertebrates in the Okavango River Delta, Botswana, was investigated during the low-water period in February 2003. This complements an earlier study undertaken during high-water in June 2000. Seventy-five samples were taken in a range of... -
Movements of, and habitat utilisation by, threespot tilapia Oreochromis andersonii (Teleostei: Cichlidae) in the Upper Zambezi River, Namibia
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Finn Økland ClintonJ Hay TorF Næsje Ben Chanda EvaB ThorstadMovements of and habitat utilisation by radio-tagged threespot tilapia (body length 25–50cm) were studied in the Upper Zambezi River between 23 November 2000 and 8 May 2001. Although utilising a relatively large stretch of river (average 5.4km) during the study... -
Influence of largemouth bass, Micropterus salmoides, on abundance and habitat selection of Cape galaxias, Galaxias zebratus, in a mountain stream in the Cape Floristic Region, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: JM Shelton JA Day CL GriffithsPredatory alien fishes have been widely introduced into streams in the Cape Floristic Region (CFR), South Africa, but little is known about their effect on native fishes. Results from this 2006 study suggest that the presence of alien predatory largemouth... -
The breeding period of the ocellated spiny eel Mastacembelus vanderwaali (Teleostei: Mastacembelidae) in the Batoka Gorge, Zambezi River
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: JL MinshullIn late October 1990, Mastacembelus vanderwaali was found to be breeding in the Zambezi River in the Batoka Gorge in protected areas along a rocky shoreline during the low water period prior to the start of the November rains. Two... -
Genetic variation in the Critically Endangered velvet worm Opisthopatus roseus (Onychophora: Peripatopsidae)
Item type: Journal Article • Journal: African Zoology • Authors: Savel R. Daniels --- Department of Botany and Zoology, South AfricaIn the present study the genetic variation of the Critically Endangered velvet worm species Opisthopatus roseus is examined. This species is endemic to the Ngele mistbelt forest in the KwaZulu-Natal province of South Africa. In recent years the forest has... -
Potential distributions of the medium- to large-sized mammals in the Cape Floristic Region, based on historical accounts and habitat requirements>
Item type: Journal Article • Journal: African Zoology • Authors: A.F. Boshoff --- Terrestrial Ecology Research Unit, Department of Zoology, South Africa L.J. Kerley --- Terrestrial Ecology Research Unit, Department of Zoology, South AfricaConservation planning in the Cape Floristic Region, a recognized world plant diversity hotspot, required systematic (i.e. presence/absence) information on the estimated distributions of the medium- to large-sized mammals. A pragmatic approach for obtaining distribution estimates, for the period prior to... -
Bushclumps as refugia for small mammals in two Eastern Cape conservation areas
Item type: Journal Article • Journal: African Zoology • Authors: G.M. Whittington-Jones --- Wildlife and Reserve Management Research Group, South Africa R.T.F. Bernard --- Wildlife and Reserve Management Research Group, South Africa D.M. Parker --- Wildlife and Reserve Management Research Group, South AfricaBushclumps are scattered islands of thicket-like vegetation within a matrix of more open vegetation. We investigated the role of bushclumps as refugia for small mammals, and examined the effect of a limited number of abiotic and biotic factors on their... -
Diel movement of smallmouth yellowfish Labeobarbus aeneus in the Vaal River, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: FJ Jacobs --- Kamutjonga Inland Fisheries Institute, Namibia GC O'Brien --- Aquatic Ecosystem Research Group, School of Life Sciences, South Africa NJ Smit --- Water Research Group (Ecology), Unit for Environmental Sciences and Management, South AfricaDiel movements of Orange–Vaal smallmouth yellowfish Labeobarbus aeneus (Burchell, 1822) in the Vaal River, South Africa, were determined by externally attaching radio transmitters to 11 adult fish and manually tracking them between March and May 2012. Twenty-four radio telemetry monitoring... -
Patterns of roost site selection and use by Southern Ground-Hornbills in north-eastern South Africa
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Blair A Zoghby --- Percy FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, South Africa Rob M Little --- Percy FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, South Africa Peter G Ryan --- Percy FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, South Africa Philip AR Hockey --- Percy FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, South AfricaDifferent habitats may be used for the needs of various aspects of an animal’s life. Southern Ground-Hornbill Bucorvus leadbeateri groups announce their presence within year-round territories by calling at dawn from their overnight roost sites. Knowledge on ground-hornbill roosting habits... -
Influence of riparian habitats on the distribution of rainforest chameleons in Parc National de Ranomafana, Madagascar
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Jeanneney Rabearivony --- , , Madagascar Lee D. Brady --- , , UK Richard K.B. Jenkins --- , , UK Richard A. Griffiths --- , , UK Achille P. Raselimanana --- , , Madagascar Michel Bisoa --- , Rasoamampionona N. Raminosoa --- , , MadagascarThe spatial and seasonal distribution of chameleon species along ecological gradients within six riparian areas in Parc National de Ranomafana was studied using transects. Eight species of chameleons were recorded (Palleon nasus, Brookesia superciliaris, B. thieli, Calumma gastrotaenia, C. glawi,... -
Factors determining the occurrence of Pleurodeles poireti (Caudata: Salamandridae) on Edough Peninsula, northeastern Algeria
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Jihène Ben Hassine --- , , Tunisia Daniel Escoriza --- , , Spain Badis Bakhouche --- , , AlgeriaPleurodeles poireti is one of the lesser-known amphibians in the Mediterranean region. This species is strictly endemic to the Edough Peninsula in northeastern Algeria. Here we investigated the factors that determine the presence of P. poireti, by affecting its selection... -
Effect of drift sampler exposure time and net mesh size on invertebrate drift density in the Njoro River, Kenya
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: PW Mureithi --- Department of Biological Sciences, Kenya JG Mbaka --- Department of Land and Water Management, Kenya CM M’Erimba --- Department of Biological Sciences, Kenya JM Mathooko --- Department of Biological Sciences, KenyaAlthough invertebrate drift is an important ecological process in lotic ecosystems, very little is known about it in Kenyan rivers. The primary aim of this study was to investigate the effect of driftnet mesh size and exposure duration on drift... -
Review of fish life history strategies associated with warm temperate South African estuaries and a call for effective integrated management
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: NA Strydom --- Department of Zoology, South Africa Y Kisten --- Department of Zoology, South AfricaRefuge and feeding areas for young fish in estuaries are important for the survival of fish and replenishment of coastal fish stocks, particularly in the temperate south east coast of southern Africa. Larvae and juveniles of important fishery species recruit... -
Foraging behaviour of wintering shorebirds at Merja Zerga lagoon (Atlantic coast, Morocco)
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Feirouz Touhami --- , Morocco Hamid Rguibi Idrissi --- , Morocco Abdelaziz Benhoussa --- , MoroccoThis paper presents the results of a comparative study on the foraging behaviour of 15 species of wintering shorebirds at Merja Zerga lagoon. We video recorded a total of 600 actively foraging birds at the intertidal mudflats of the lagoon... -
Relationship between sediment grain sizes and macroinvertebrate distribution along the Isiukhu River, western Kenya
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Emmanuel Mzungu --- Masinde Muliro University of Science and Technology, Kenya Anthony W Sifuna --- Masinde Muliro University of Science and Technology, Kenya William A Shivoga --- Masinde Muliro University of Science and Technology, KenyaThe current study investigated the relationship between sediment grain sizes and macroinvertebrate distribution along the Isiukhu River, a tropical stream in western Kenya. Ten sites in total were selected from the upstream, midstream and downstream areas. Sampling of sediments and... -
Habitat scale and seasonality influence macroinvertebrate functional feeding groups in a tropical Kenyan montane stream
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Frank O Masese --- University of Eldoret, Kenya Augustine Sitati --- University of Eldoret, Kenya Mourine J Yegon --- University of Eldoret, Kenya Elizabeth W Wanderi --- University of Eldoret, Kenya Phillip O Raburu --- University of Eldoret, KenyaHabitat quality and diversity strongly influence the composition of macroinvertebrate communities in lotic ecosystems. We evaluated the functional organization of macroinvertebrates in response to changes in habitat type and seasonality in the Afromontane Moiben River in western Kenya. In-stream substrate... -
Influence of physico-chemical parameters on benthic macroinvertebrate community dynamics in Isiukhu River, Kenya
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Emmanuel Mzungu --- Kenya Fisheries Service (Western Region), Kenya William A Shivoga --- Masinde Muliro University of Science and Technology, Kenya Dorothy K Lukhabi --- Africa Centre of Excellence in Coastal Resilience (ACECoR), Ghana Anthony W Sifuna --- Masinde Muliro University of Science and Technology, KenyaThe current study investigated the influence of physico-chemical parameters on macroinvertebrates distribution, abundance and diversity throughout the Isiukhu River. The sampling sites were selected along the Isiukhu River based on distinct land use types at the upstream, midstream and downstream... -
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...