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Decay rates of arboreal and terrestrial nests of Eastern chimpanzees (Pan troglodytes schweinfurthii) in the Bugoma Central Forest Reserve, Uganda: Implications for population size estimates

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cris.lastimport.scopus2024-02-12T20:28:18Z
dc.abstract.enChimpanzees were once thought to sleep primarily in the trees, but recent studies indicate that some populations also construct terrestrial night nests. This behavior has relevance not only to understanding the behavioral diversity of Pan troglodytes, but also to the conservation of the species, given that nest encounter rates are often used to estimate great ape population densities. A proper estimate of decay rates for ground nests is necessary for converting the encounter rate of nests to the density of weaned chimpanzees. Here we present the results of the first systematic comparative study between the decay rates of arboreal and terrestrial chimpanzee nests, from the Bugoma Central Forest Reserve in western Uganda. We followed the decay of 56 ground and 51 tree nests in eight nest groups between April 2020 and October 2021. For 15 of the ground and 19 of the tree nests, we collected detailed information on the condition of the nests every two weeks; we checked the remaining 73 nests only twice. On average, ground nests lasted 238 days versus 276 days for tree nests (p = 0.05). Of the 107 total nests surveyed, 51% of tree and 64% of ground nests had disappeared after six months. Based on our results, we propose a modification of the formula used to convert nest density into chimpanzee density. Our results highlight the importance of taking into account potential differences in decay rates between ground versus tree nests, which will likely influence our understanding of the distribution of ground nesting behavior in chimpanzee across tropical Africa, as well as our estimations of the densities of ground nesting populations.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorHicks, Thurston
dc.contributor.authorGruber, Thibaud
dc.contributor.authorHobaiter, Catherine
dc.contributor.authorNamaganda, Mary
dc.contributor.authorKonarzewski, Marek
dc.contributor.authorShaban, Gerald Mayanja
dc.contributor.authorMundry, Roger
dc.contributor.authorRomani, Toni
dc.date.accessioned2024-01-24T21:17:51Z
dc.date.available2024-01-24T21:17:51Z
dc.date.copyright2023-07-28
dc.date.issued2023
dc.description.accesstimeBEFORE_PUBLICATION
dc.description.financeNie dotyczy
dc.description.number9
dc.description.versionFINAL_PUBLISHED
dc.description.volume85
dc.identifier.doi10.1002/AJP.23536
dc.identifier.issn0275-2565
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/104382
dc.identifier.weblinkhttps://onlinelibrary.wiley.com/doi/epdf/10.1002/ajp.23536
dc.languageeng
dc.pbn.affiliationbiological sciences
dc.relation.ispartofAmerican Journal of Primatology
dc.relation.pagese23536
dc.rightsCC-BY-NC-ND
dc.sciencecloudnosend
dc.subject.enEastern chimpanzees
dc.subject.enground nesting
dc.subject.ennest decay
dc.subject.ennest half‐life
dc.titleDecay rates of arboreal and terrestrial nests of Eastern chimpanzees (Pan troglodytes schweinfurthii) in the Bugoma Central Forest Reserve, Uganda: Implications for population size estimates
dc.typeJournalArticle
dspace.entity.typePublication