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Ecology of desert-dwelling giraffe Giraffa camelopardalis angolensis in northwestern Namibia

The population size and range of giraffe Giraffa camelopardalis have been greatly reduced in Africa in the past century, resulting in geographical isolation of local populations and some herds surviving at the edge of the species’ preferred range. Numerous factors have contributed to these declines, but historical analysis indicates that habitat loss and fragmentation, human encroachment, disease and poaching are the main threatening processes. These processes can be expected to continue to impact on giraffe populations, particularly as human populations

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Use of home range behaviour to assess establishment in translocated giraffes

Conservation translocation is a management technique employed to introduce, re-introduce or reinforce wild animal and plant populations. Giraffe translocations are being conducted throughout Africa, but the lack of effective post-translocation monitoring limits our ability to assess translocation outcomes. One potential indicator of translocation success is the establishment of characteristic movement and home range behaviour in the new location. We analysed the post-translocation movement patterns of six Global Positioning System-collared Angolan giraffes (Giraffa camelopardalis angolensis) in three regions of Namibia. We

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Internal parasites of giraffes (Giraffa camelopardalis angolensis) from Etosha National Park, Namibia

During three seasonal periods, parasitological samples were collected from six giraffes (Giraffa camelopardalis angolensis) in the Etosha National Park, Namibia. The helminths recovered included Parabronema skrjabini, Skrjabinema spp., Haemonchus mitchelli and Echinococcus sp. larvae; Cytauxzoon sp. was the only hematozoan found. The low mean abundances of all helminths which ranged from 18 to 531 may be attributed to the low rainfall of this region or because the giraffe is not a preferred host for these species of helminths.

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Genetic structure of two populations of the Namibian giraffe, Giraffa camelopardalis angolensis

Two geographically distinct populations of giraffe (Giraffa camelopardalis) were sampled for this study, the northern Namib Desert and Etosha National Park. Population genetic parameters and relationships within subpopulations were estimated to better understand the genetic architecture of this isolated subspecies. Gene flow between the geographically separated populations can be attributed to recent translocation of giraffe between the two populations. Inbreeding estimates in the six subpopulations studied were low though we found evidence that genetic drift may be affecting the genetic

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Distribution and status of the desert-dwelling giraffe (Giraffa camelopardalis angolensis) in northwestern Namibia

The population density and distribution of desert-dwelling giraffes was estimated in three study areas in the Hoanib River catchment, northwestern Namibia. Giraffe population densities (0.01 giraffe/km^2) were equal to the lowest recorded in Africa with population numbers fluctuating over past  decades. Sex ratios, herd sizes and age categories differed between all the study areas, while a weak correlation (r2 = 0.66, P < 0.001) in giraffe aggregation and the hot-dry season was observed in the Ombonde River. Seasonal movement and

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