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Feeding choices and impacts of extralimital giraffe on two keystone tree species in the Kgalagadi National Park

In this article we determine the effect of an extralimital megaherbivore on the reproductive potential and vegetation structure of two keystone tree species in the Auob River in the south western Kalahari Desert of southern Africa. Using spoor and dung counts we establish the presence of giraffe in three predetermined density zones by walking 50 transects across the river in each zone. We also photographed six trees from each species in each zone and use these photographs to determine browse

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The genetic status of the introduced giraffe population in Central South Africa

There has been no reliable historical evidence of giraffe occurring naturally in the Free State Province in Central South Africa (Dagg 1962; Deacon & Parker 2016; Sydney 1965). Although Lynch (1983) mentioned the possibility of the natural distribution of giraffe in the East and Western Free State, there is no concrete evidence that giraffe existed earlier than this in the Free State (Ansell 1968). According to Griesel (1961), Hirst (1966), Lambrechts (1974) and Terblanche and Kok (1995), translocations of the

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Interspecific and temporal variation of condensed tannins and cyanide concentrations in potential dietary sources of extralimital giraffes (Giraffa camelopardalis) in the Karoo

During 2016 and 2018 four giraffe (Giraffa camelopardalis) mortalities occurred in the Karoo potentially caused by acute hydrogen cyanide poisoning. Plants have various defence mechanisms to protect themselves against herbivory, including the production of secondary metabolites such as condensed tannins and hydrogen cyanide. This study quantified condensed tannin and hydrogen cyanide production in selected Karoo plant species that giraffe may browse, to assess the possibility of acute hydrogen cyanide poisoning and condensed tannin intoxification. Condensed tannins and hydrogen cyanide concentrations

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