Woody vegetation change in response to browsing in Ithala Game Reserve, South Africa

The impact of elephant and other browsers may be magnified when they are restricted within small, fenced reserves. These reserves are becoming commonplace in southern Africa. The composition and structure of the woody vegetation of a portion of the 30 000 ha Ithala Game Reserve, South Africa, was monitored annually from 1992 to 2000. Woody […]

The use of dosed and herbage n-Alkanes as markers for the determination of digestive strategies of captive giraffes (giraffa camelopardalis)

Selected aspects of digestion in captive giraffes were investigated in two trials with a type of marker that is new for digestive studies in non-domestic species. n-Alkanes were used as internal and external markers. In Trial 1, diet composition, intake, and digestibility were directly measured and estimated with the marker. Six giraffes were dosed once […]

Overlap and seasonal shifts in use of woody plant species amongst a guild of savanna browsers

To clarify the potential influence of different browsers in the same guild on woody vegetation, dietary overlap and separation between elephant, giraffe, kudu, nyala and impala was assessed in Hluhluwe-iMfolozi Park, South Africa. Woody species browsed, browsing heights, plant-parts browsed and browsing versus grazing were recorded over 2 y by direct observation. We obtained 3068 […]

Shoot characteristics of Acacia tortilis (Forsk.) in wildlife and rangeland habitats of Botswana

Length, branch production, orientation, spinescence and biomass were measured for current shoots of Acacia tortilis shrubs in a range of habitats in Botswana. All shoot characteristics varied between individuals and between habitats with longer, less spinescent shoots produced in the habitat recently protected from wildlife. Biomass allocated to woody material increased with shoot length at […]

Home range — body mass relations: a field study on African browsing ruminants

Home range data were collected concurrently from four syntopic browsing ruminant species in a conserved savanna ecosystem. Mean home range areas were: giraffe (Giraffa camelopardalis) 282 km^2; kudu (Tragelaphus strepciceros) 21.9 km^2; impala (Aepyceros melampus) 5.81 km^2; steenbok (Raphicerus campestris) 0.62 km^2. Home range area (Ahr) scaled on body mass (M) as: Ahr = 0.024 […]

Diet and Feeding Effects of Introduced Giraffe in the Eastern Cape.

This study presents the results of a study on introduced giraffe diet and feeding effects within the Eastern Cape Province of South Africa. Five sites were selected over a moisture gradient from the mesic east to the arid west of the Eastern Cape to describe giraffe diet and provide baseline data for feeding effect experiments. […]