Surviving at the extreme: Chimpanzee ranging is not restricted in a deforested human‐dominated landscape in Uganda
2021
McLennan, Matthew R. | Hintz, Benjamin | Kiiza, Vicent | Rohen, Jacqueline | Lorenti, Georgia A. | Hockings, Kimberley
Endangered wildlife increasingly inhabits human‐dominated landscapes outside protected areas. Large‐bodied mammals require large spaces, and their ranging may be especially impacted by landscape modifications including farming, road development and urbanisation. We studied the Wagaisa community of chimpanzees (Pan troglodytes) in Uganda, which inhabit a landscape characterised by high human population density, widespread deforestation, and rapid agricultural and infrastructural development. We aimed to assess whether this dynamic, fragmented environment constrains the chimpanzees’ ranging, and to identify critical habitat patches to aid their conservation. During March–May 2018, we assessed range use from locations of direct observations and indirect signs, corroborated by longer‐term behavioural monitoring of the chimpanzees (June 2018–December 2019). No evidence of limited ranging was found. The Wagaisa chimpanzees used an area measuring ≥ 43 km² (100% MCP) and ranged extensively in the anthropogenic matrix. Most frequently used parts of the range (‘core habitat areas’) centred around small (5–20 acres), widely dispersed remnant forest patches and exotic eucalyptus plantations. Forty per cent of chimpanzee nests were constructed in eucalyptus trees, suggesting a behavioural adjustment to landscape changes. Actions to facilitate conservation of these ‘village chimpanzees’ and others surviving in transformed human‐dominated habitat need not conflict with the sustainable development of the region.
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