Ecological changes in Lake Victoria after the invasion of Nile perch (Lates Niloticus): the catchment, waters quality and fisheries management
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Lake Victoria, the second largest lake in the world, has undergone successive dramatic changes since 1920's. Intensive non-selective fisheries, extreme changes in the drainage basin of vegetation, industrialization, agricultural developments, dams, introduction and invasion of exotic fish species that led to the destruction of the native and endemic components followed by a progressive build-up of physical and chemical changes in Lake Victoria have identified substantial increases in chlorophyll concentration and primary productivity as well as decreases in silica compared to values measured 30 years ago. Present sulphate concentration (0.1 mg/L) are lower than the lowest values reported from other large lakes in the world. There has been a shift in the phytoplankton community towards dominance of blue-greens. The zooplankton densities are relatively low and the body sizes of the organisms are small. Anoxic waters have .....
JournalProceedings of the Second EEC Regional Seminar on Recent Trends of Research on Lake Victoria Fisheries
PublisherICIPE Science Press
Conference NameSecond EEC Regional Seminar on Recent Trends of Research on Lake Victoria Fisheries
CitationOkemwa, E.; Wakwabi, E.O.; Getabu, A. (Ed.) Proceedings of the Second EEC Regional Seminar on Recent Trends of Research on Lake Victoria Fisheries, Nairobi : ICIPE Science Press, p. 29-39
- Conference Papers