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Journal Article

Using long-term ranging patterns to assess within-group and between-group competition in wild mountain gorillas

MPS-Authors
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Seiler,  Nicole       
Department of Primatology, Max Planck Institute for Evolutionary Anthropology, Max Planck Society;

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Robbins,  Martha M.       
Gorillas, Department of Primatology, Max Planck Institute for Evolutionary Anthropology, Max Planck Society;
Department of Primatology, Max Planck Institute for Evolutionary Anthropology, Max Planck Society;

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Seiler_Using_BMCEco_2020.pdf
(Publisher version), 2MB

Supplementary Material (public)

Seiler_Using_BMCEco_2020_Suppl.zip
(Supplementary material), 65KB

Citation

Seiler, N., & Robbins, M. M. (2020). Using long-term ranging patterns to assess within-group and between-group competition in wild mountain gorillas. BMC Ecology, 20: 40. doi:10.1186/s12898-020-00306-6.


Cite as: https://hdl.handle.net/21.11116/0000-0006-D7FB-D
Abstract
Competition within and between social groups determines access to resources and can be inferred from space use parameters that reflect depletion of food resources and competitive abilities of groups. Using location data from 1998 to 2017, we investigated within- and between-group competition in 12 groups of wild mountain gorillas (Gorilla beringei beringei). As within-group feeding competition is expected to increase with group size, an increase in group size is predicted to lead to an increase in the size of annual home ranges and core areas, but to a decrease in fidelity (reuse of an area). Due to asymmetries in competitive abilities, larger groups are expected to have higher exclusivity (degree of non-shared space) of annual home ranges and core areas than smaller groups.