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Evaluation de la capacité de charge pour les girafes dans la réserve de biosphère de Gadabédji, Niger

Dans le cadre de la conservation de la girafe (Giraffa cameleopardalis perralta L.), huit individus provenant de Kouré ont été réintroduites dans la réserve de biosphère de Gadabédji. Trois ans après cette introduction, il s’avère important d’approfondir les connaissances sur l’écologie de l’espèce. C’est dans ce sens que la présente étude a été initiée dans le but de déterminer la capacité de charge de la réserve de biosphère de Gadabéji (RBG). En effet, les biomasses foliaires totales et accessibles de

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Carrying Capacities of Natural Veld in Natal For Large Wild Herbivores

Carrying capacities for wild herbivores in a variety of bioclimatic regions in Natal were examined. In calculating stocking rates, estimated relative energy requirements of the various species were used to equate species of differing size. Herbivores were grouped according to the anatomy of their alimentary canals and to the type and parts of plants they prefer to eat. Stocking rates of wild herbivores and of wild domestic herbivores mixed were compared in five different bioclimatic regions to the carrying capacities

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Implications of closed ecosystem conservation management: the decline of Rothschild’s giraffe (Giraffa camelopardalis rothschildi) in Lake Nakuru National Park, Kenya

Giraffe were historically free-ranging across most of sub-Saharan Africa but are now most often confined to national parks, conservation areas, or private ranches. Five viable populations of Rothschild’s giraffe (Giraffa camelopardalis rothschildi) remain in protected areas in Kenya and Uganda. The viable population in Uganda is Murchison Falls National Park and the four populations in Kenya are Lake Nakuru National Park (LNNP), Ruma National Park, Giraffe Manor, and Mwea Natural Reserve. The Kenya Wildlife Service queried a rapid decline in

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Stability in a multi-species assemblage of large herbivores in East Africa

Animal census data from Lake Manyara National Park in northern Tanzania are presented. The data refer to large mammalian herbivores, that is individually heavier than twenty kg, of which the numbers were counted in nine different years between 1959 and 1984. The total biomass of these herbivores was comprised mainly of African buffalo and African elephant. Five functional groups of herbivores were distinguished (buffalo, ” elephant-as-grazer”, ” elephant-as-browser “, “other grazers”, and “other browsers”). The pressures of all these groups

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