Population structure of giraffes is affected by management in the Great Rift Valley, Kenya
Giraffe populations in East Africa have declined in the past thirty years yet there has been limited research on this species. This study had four objectives: i) to provide a baseline population assessment for the two largest populations of Rothschild’s giraffes in Kenya, ii) to assess whether there are differences in population structure between the […]
Giraffe social preferences are context dependent
The dynamic nature of animal societies often hides multiple layers of complexity. The field of animal behaviour is rapidly advancing with the development of increasingly sophisticated analytical methods that allow scientists to identify complex and nuanced drivers of social patterns. The resurgent interest in giraffe sociality illustrates this by challenging the early view that individuals […]
Group sizes of giraffes in Kenya: the influence of habitat, predation and the age and sex of individuals
Giraffe group sizes appear to vary in response to localized ecological and environmental factors, but there has been little investigation of how social factors or predation risk affect group size in giraffes. We studied two adjacent, enclosed populations of Rothschild’s giraffes in Kenya, and used 591 records of groups to determine the relative influence of […]
Dynamics of ungulates in relation to climatic and land use changes in an insularized African savanna ecosystem
Land use change and human population growth are accelerating the fragmentation and insularization of wildlife habitats worldwide. The conservation and management of wildlife in the resultant ‘island’ ecosystems in the context of global warming is challenging due to the isolation and reduced size of the ecosystems and hence the scale over which ecosystem processes can […]
Implications of closed ecosystem conservation management: the decline of Rothschild’s giraffe (Giraffa camelopardalis rothschildi) in Lake Nakuru National Park, Kenya
Giraffe were historically free-ranging across most of sub-Saharan Africa but are now most often confined to national parks, conservation areas, or private ranches. Five viable populations of Rothschild’s giraffe (Giraffa camelopardalis rothschildi) remain in protected areas in Kenya and Uganda. The viable population in Uganda is Murchison Falls National Park and the four populations in […]
Structure and composition of Acacia xanthophloea woodland in Lake Nakuru National Park, Kenya
The woody vegetation of Lake Nakuru National Park occurs along rivers, lakeshores and flood plains. Four different sites within the Acacia xanthophloea woodlands were selected for the study. Vegetation structure was not significantly different in the four woodlands used for the study, but these sites differed in the relative density of Acacia trees. Regeneration of […]