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Synopsis of scientific results of the sarec sponsored project on the ecology of Lake Kariba
Magadza, C.H.D. (1992). Synopsis of scientific results of the sarec sponsored project on the ecology of Lake Kariba, in: Mavuti, K.M. et al. (Ed.) (1993). Recent Advances in Hydrobiology and Fisheries in Eastern Africa: Proceedings of the 1st Symposium of Hydrobiological Society of East Africa, on State of Knowledge and Recent Research Advances in Freshwater and Marine Biology in Eastern Africa, held in Nairobi, Kenya, 13-16 December 1988. pp. 73-77
In: Mavuti, K.M.; Jaccarini, V.; Martens, E.E. (Ed.) (1993). Recent Advances in Hydrobiology and Fisheries in Eastern Africa: Proceedings of the 1st Symposium of Hydrobiological Society of East Africa, on State of Knowledge and Recent Research Advances in Freshwater and Marine Biology in Eastern Africa, held in Nairobi, Kenya, 13-16 December 1988. Kluwer Academic: Dordrecht. IX, 110 pp., more
In: Hydrobiologia. Springer: The Hague. ISSN 0018-8158, more
Peer reviewed article  

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Keyword
    Fresh water

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  • Magadza, C.H.D.

Abstract
    A summary of current research on Lake Kariba is given. Lake Kariba is now a phosphorus limited oligotrophic lake, dependent on annual nutrient input for the maintenance of production. Nitrogen fixation by cyanobacteria has become an important source of nitrogen in the dry season and that fish harvesting is an important phosphorus sink. An up to date plankton composition list has been produced and plankton biomass determined. Diving studies indicate large biomass of bivalves. The aquatic vegetation displays both longitudinal as well as depth gradients, related to light regimes. Only preliminary data are available on mud/water interactions, but the available data indicate considerable fluxes in the river mouth stations and shallow protected littoral areas. The role of predatory birds and crocodiles in the fishery economy of the lake is evaluated and indicates no major conflict between these predators and human fishing interests. The research also draws attention to pesticides in Lake Kariba as indicated by work on fish eating birds and crocodile research. Since the publication of 'Lake Kariba' by Halon & Coche (1975) the research project, THE ECOLOGY OF LAKE KARIBA, being undertaken by the University Lake Kariba Research Station constitutes the first multidisciplinary study of the lake, 30 years after the Zambezi river was impounded at Kariba Gorge. It could have offered a unique opportunity of comparing the lake now with what it was soon after impoundment.

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