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Spatiotemporal Variation in Bonobo (Pan paniscus) Habitat Use in a Forest–Savanna Mosaic

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Abstract

Understanding the ecological and behavioral variation of primates is central to improving conservation strategies. Studies of chimpanzees (Pan troglodytes) have shown marked behavioral variability across a wide range of habitats. By comparison, bonobos (Pan paniscus) occur mainly in continuous forest sites, and socioecological models explaining behavioral differences between the two species are based on the assumption that bonobo habitat is richer and more stable than chimpanzee habitats. The objective of this study was to assess bonobo ecology in a forest–savanna mosaic. We specifically explored 1) bonobo home range size, habitat use, and dietary composition; 2) forest fragmentation in a bonobo community’s home range; and 3) seasonality of dietary diversity, habitat use, and spatial distribution. Using 2 years of observational data on location, habitat type, and dietary composition, we found that the bonobo community's home range size, density, and dietary diversity were similar to those observed in continuous forest sites. Bonobos used areas with lower forest fragmentation than the surrounding areas and preferentially spent time in forested habitats. During the dry season, bonobos consumed a lower diversity of fruit species, spent more time in sparse forest with Marantaceae understory, and were closer to the seasonal center of their home range than during the rainy season. Our results contribute to our understanding of behavioral variation in bonobos and suggest that forest–savanna mosaic is valuable to bonobo conservation.

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Acknowledgements

Our sincere thanks to local and national authorities in DRC. We are grateful to Mbou-Mon-Tour NGO (DRC) and to the unit of Eco-anthropology, the Pôle Image and Bonobo ECO (France) for their support in this research both monetary and in kind. We are most indebted to the two main local field assistants, Osa Otsiu Epany and Muzungu Ngofuna, for their great job in this long-term project and to trackers of the Embirima village. We are deeply grateful to anonymous reviewers; Erin Wessling, guest editor; and Johanna Setchell, editor-in-chief for their very important comments and suggestions to improve this manuscript. We thank Mallory Eckstut, PhD, from Edanz Group (https://en-author-services.edanzgroup.com/) for editing a draft of this manuscript.

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FP and VN conceived and designed the study, encoded data, analyzed data, and wrote the manuscript. CG participated in the writing of the manuscript. LM encoded and analyzed data. CM and JCB supported data collection and protocol design. RL participated in data analyses.

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Correspondence to Victor Narat.

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Handling Editor: Erin G. Wessling

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Pennec, F., Gérard, C., Meterreau, L. et al. Spatiotemporal Variation in Bonobo (Pan paniscus) Habitat Use in a Forest–Savanna Mosaic. Int J Primatol 41, 775–799 (2020). https://doi.org/10.1007/s10764-020-00180-5

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