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Arthropod parasites of springbok, gemsbok, kudus, giraffes and Burchell’s and Hartmann’s zebras in the Etosha and Hardap Nature Reserve, Namibia

A total of 48 springbok, 48 gemsbok, 23 kudus and 6 giraffes were examined for ticks and lice, while 9 Burchell’s zebras and 6 Hartmann’s mountain zebras were examined only for ticks. Springbok and gemsbok were shot in both the Etosha National Park in the north and the Hardap Nature Reserve in the south of Namibia. All the other animals were shot in the Etosha National Park. A total of 7 ixodid tick species and 8 lice species were recovered.

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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 browse records. Niche breadth (Levins’ measure) and overlap (Schoener’s index) in species browsed and browsing heights were calculated. Annual and seasonal differences in these measurements,

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Resource partitioning within a browsing guild in a key habitat, the Chobe Riverfront, Botswana

Resource partitioning between elephant, giraffe, kudu and impala was assessed. This was to address concerns that elephant population increase adversely affects other species through depleting their food in key areas close to permanent water. Resources considered were woody species browsed, height browsed and plant parts browsed. Animals were observed as they browsed and the plant species, browsing heights and plant parts browsed were recorded. Observations were made over 1 y and the data were divided between wet and dry season.

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Feeding-height stratification among African browsing ruminants

This study investigated the hypothesis that the use of different feeding levels in the vegetation promotes resource partitioning among browsing ungulate species in African savannas. Focal animal feeding observations, recorded on a real-time basis using computerized data-capture system, were conducted on giraffe (Giraffa camelopardalis Linnaeus), kudu (Tragelaphus steosiceros Pallas), impala (Aepyceros melampus Lichtenstein) and steenbok (Raphicerus campestris Thunberg) in the central region of the Kruger National Park, South Africa, Although there was clear stratification in mean feeding heights among the

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Effects of resource limitation on habitat usage by the browser guild in Hluhluwe-iMfolozi Park, South Africa

Resource depletion and association increases in interspecific competition are likely to influence differential habitat usage amongst a guild. We tested some prominent theoretical concepts using observed differenced in seasonal habitat use amongst the savannah browser guild (elephant, giraffe, impala, kudu and nyala) in Hluhluwe-iMfolozi Park, South Africa. Herbivore locations (n= 3108) were recorded over 2 y using repeated road transects and, for elephant, GPS collars (187254 downloads). Densities were calculated using a novel GIS approach designed to be a cost-effective

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Population statistics and carrying capacity of large ungulates in Whovi Wild Area, Rhodes Matopos National Park, Zimbabwe Rhodesia

Population data for introduced large ungulates, are presented to demonstrate population growth in terms of numbers and biomass in the Whovi Wild Area of the Rhodes Matopos National Park, Zimbabwe Rhodesia. Peak calving in relation to food requirements of different species is discussed. Standing crop of large ungulates was calculated and compared with carrying capacity as predicted by Coe et al. (1976)

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