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Defaunation erodes the diversity of rodent personality traits in fragmented forests

2025-07-17Artigo de investigação Acesso restrito
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datacite.subject.fosCiências Naturais::Ciências Biológicas
datacite.subject.sdg15:Proteger a Vida Terrestre
dc.contributor.authorZeng, Di
dc.contributor.authorMatthews, Thomas
dc.contributor.authorWang, Rui
dc.contributor.authorZhao, Yuhao
dc.contributor.authorYan, Chuan
dc.contributor.authording, ping
dc.contributor.authorSi, Xingfeng
dc.contributor.editorBijleveld, Allert
dc.date.accessioned2026-01-26T11:28:18Z
dc.date.available2026-01-26T11:28:18Z
dc.date.issued2025-07-17
dc.description.abstractABSTRACT: Habitat fragmentation is a primary driver of biodiversity loss globally. One impact of habitat fragmentation is the resultant decline and loss of large and medium mammal populations (also known as defaunation). While the effects of habitat fragmentation and associated defaunation on species diversity are well documented, their impacts on intraspecific diversity are less studied. One understudied source of intraspecific diversity is the animal personality traits within populations. As individuals with contrasting personality traits may disproportionately contribute to ecosystem functions, losing diversity of personality traits could thus impair ecosystem functions, even if some individuals of the species still persist. However, it is still unclear how the diversity of animal personality traits changes in fragmented habitats with severe defaunation. Here, we conducted mammal surveys and comprehensive behavioural assessments of Niviventer confucianus (Chinese white-bellied rat)—the most abundant rodent—on 11 forested islands in Thousand Island Lake, China, a fragmented reservoir island system formed by dam construction. We used Bayesian structural equation modelling and a functional diversity framework considering intraspecific variation to disentangle the direct and indirect effects of habitat fragmentation and defaunation on the functional diversity of N. confucianus personality traits. We found that defaunation directly decreased the functional divergence of N. confucianus personality traits. Decreasing island area indirectly reduced the functional divergence of N. confucianus personality traits through intensifying defaunation. We also found that island area directly increased rodent abundance but simultaneously exerted an indirect negative effect via defaunation. However, we did not find an effect of rodent abundance on the functional divergence, nor any effects of habitat fragmentation and defaunation on the functional richness or functional evenness of N. confucianus personality traits. These results indicate that defaunation may play a key role in mediating the negative effects of habitat fragmentation on animal behavioural diversity. The defaunation-resultant declines of intraspecific behavioural diversity highlight the importance of measuring intraspecific diversity to better understand the ecological consequences of human-driven environmental changes on biodiversity.eng
dc.identifier.citationZeng, D., Matthews, T. J., Wang, R., Zhao, Y., Yan, C., Ding, P., & Si, X. (2025). Defaunation erodes the diversity of rodent personality traits in fragmented forests. Journal of Animal Ecology, 94(10), 2047-2061. DOI:10.1111/1365-2656.70105
dc.identifier.doi10.1111/1365-2656.70105
dc.identifier.eissn0021-8790
dc.identifier.issn0021-8790
dc.identifier.urihttp://hdl.handle.net/10400.3/8815
dc.language.isoeng
dc.peerreviewedyes
dc.publisherWiley
dc.relationNational Natural Science Foundation of China (projetos nº 32101268, 32371590, 32030066, 32101278)
dc.relationChina Postdoctoral Science Foundation (projetos nº 2022M711170 e 2023M731111)
dc.relation.hasversionhttps://www.mdpi.com/2305-6304/13/3/146
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/
dc.subjectanimal personality
dc.subjectcascading effects
dc.subjectfunctional diversity
dc.subjecthabitat fragmentation
dc.subjectintraspecificdiversity
dc.subjectreservoir island
dc.subjectsmall mammals
dc.titleDefaunation erodes the diversity of rodent personality traits in fragmented forestseng
dc.typeresearch article
dspace.entity.typePublication
oaire.citation.endPage2061
oaire.citation.issue10
oaire.citation.startPage2047
oaire.citation.titleJournal of Animal Ecology
oaire.citation.volume94
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameZeng
person.familyNameMatthews
person.familyNameWang
person.familyNameZhao
person.familyNameding
person.familyNameSi
person.givenNameDi
person.givenNameThomas
person.givenNameRui
person.givenNameYuhao
person.givenNameping
person.givenNameXingfeng
person.identifier.orcid0000-0002-0010-7356
person.identifier.orcid0000-0002-7624-244X
person.identifier.orcid0000-0002-8632-7703
person.identifier.orcid0000-0002-2392-1879
person.identifier.orcid0000-0003-1417-1815
person.identifier.orcid0000-0003-4465-2759
person.identifier.ridI-3957-2014
person.identifier.scopus-author-id56005200900
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relation.isAuthorOfPublication.latestForDiscoverya4e7408f-81c1-4cc2-860b-0e81ffb689d5

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