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Waterhole use by African fauna

Water is one of the fundamental requirements of life but there has been little study on the use of water by free-ranging wildlife communities. We investigated the timing of waterhole use by African fauna using webcams to determine whether this mode of data collection was viable, to determine whether animals drank randomly throughout the day, whether there were differences between guilds in waterhole use and finally we created a relative rank of water dependency by comparing waterhole use with the

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The Isotopic Ecology of East African Mammals

The stable carbon and nitrogen isotope ratios of bone collagen have been used to trace diet and habitat selection of the larger mammals of East Africa. 238 individuals of 43 species from montane forests and grasslands in Kenya and Tanzania have been analyzed. The results show that carbon isotopes discriminate between (1) grazers and browsers in savanna grasslands, (2) forest floor and savanna grassland herbivores and (3) forest floor and forest canopy species. Nitrogen isotopes discriminate between (4) carnivores and

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Natural history miscellany winning by a neck: Tall giraffes avoid competing with shorter browsers

With their vertically elongated body form, giraffes generally feed above the level of other browsers within the savanna browsing guild, despite having access to foliage at lower levels. They ingest more leaf mass per bite when foraging high in the tree, perhaps because smaller, more selective browsers deplete shoots at lower levels or because trees differentially allocate resources to promote shoot growth in the upper canopy. We erected exclosures around individual Acacia nigrescens trees in the greater Kruger ecosystem, South

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