Home range and seasonal movements of Giraffa camelopardalis angolensis in the northern Namib Desert

Author(s)Julian Fennessy
Year Published2009
JournalAfrican Journal of Ecology
Page Numbers318–327
Size623.79 KB
Abstract:

Estimates of home range size of giraffe in the northern Namib Desert were on average larger than those in other populations. In particular, the largest individual home range of any giraffe bull (1950 km2) was recorded – correlated with low population density, reduced forage density and increased searching for receptive cows. The predominant pattern of movement was linear, along the riparian environments, however, large-scale irregular movements into tributaries and other areas were also recorded. Small-scale movements by bulls into the mountains above the Hoarusib River as well as by cows into the northern tributaries of the Hoanib River were observed. Seasonal movements of giraffe were not as distinctive as those in other giraffe populations. Small-scale habitat segregation was observed in the Hoarusib River study area with giraffe cows foraging only in the Gomatum River during the hot-dry season. The first ever study of GPS satellite collared giraffe provided some of the highest resolution data on giraffe movements to date, including strong biphasic movement behaviour of giraffe over 24-h periods.

Keywords: GPS satellite collaring, Home range, Namib Desert, Spatial movements

Author: Julian Fennessy

Journal: African Journal of Ecology


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