Lowe-McConnell, Rosemary (1994) The changing ecosystem of Lake Victoria, East Africa. Freshwater Forum, 4(2), pp. 76-89.
(The document's language is
- Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat
Download (175Kb) | Preview
Dramatic changes are occurring in the Lake Victoria ecosystem. Two-thirds of the endemic haplochromine cichlid species, of international interest for studies of evolution, have disappeared, an event associated with the sudden population explosion of piscivorous Nile perch (Lates: order Perciformes, family Centropomidae) introduced to the lake some thirty years ago. The total fish yield has, however, increased 5-fold from 1970 to 1990, but this yield is now dominated by just three fish species: the introduced Nile perch (Lates niloticus), Nile tilapia (Oreochromis niloticus), and a small endemic pelagic cyprinid (Rastrineobola argentea); these three have replaced a multispecies fishery. Contemporaneously the lake is becoming increasingly eutrophic with associated deoxygenation of the bottom waters, thereby reducing fish habitats. Conditions appear to be unstable.
|Title:||The changing ecosystem of Lake Victoria, East Africa|
|Journal or Publication Title:||Freshwater Forum|
|Page Range:||pp. 76-89|
|Contact Email Address:||email@example.com|
|Issuing Agency:||Freshwater Biological Association|
|Uncontrolled Keywords:||fishery; limnology; lake fisheries; population dynamics; Africa; Lake Victoria; Lates niloticus; Oreochromis niloticus; Rastrineobola argentea|
|Depositing User:||Hardy B Schwamm|
|Date Deposited:||15 Nov 2010 17:47|
|Last Modified:||29 Sep 2011 16:16|
Actions (login required)