The effect of ecological changes in Lake Victoria on the present trophic characteristics of Oreochromis niloticus in relation to the species' role as a stabilizing factor of biomanipulation

The Lake Victoria ecosystem has experienced such a profound ecological change that Oreochromis niloticus - an introduced species, is the only important cichlid (out of the original 250 + spp) left in the lake. It is the basis of an important commercial fishery which is intensely exploited by sophisticated methods. An investigation of its feeding habits at present indicates that the species could also playa major role in the energy flux of the lake. Fisheries management in Lake Victoria will thus require multi-disciplinary studies which reflect a total ecosystem approach.

La végétation des places vaso-sablonneuses de la presqu'île de Cam-Ranh. Note n° IV: Introduction à l'étude des sables littoraux du Centre Viêt-Nam.

The important sedimentation of the Bay of Cam-Ranh rivers Suȏi Hai, Truong Suȏi, Suȏi Ca, Suȏi Tra Duc, Sȏng Can, Sȏng Trau from the Annamite Chain, provides hydrophilic vegetation (mangroves and swampy meadows) with a favorable habitat.