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dc.contributor.authorErlandsson, Rasmus Ingel
dc.contributor.authorHasselgren, Malin
dc.contributor.authorNoren, Karin
dc.contributor.authorMacDonald, David
dc.contributor.authorAngerbjörn, Anders
dc.description.abstractIn socially fexible species, the tendency to live in groups is expected to vary through a trade-of between costs and benefts, determined by ecological conditions. The Resource Dispersion Hypothesis predicts that group size changes in response to patterns in resource availability. An additional dimension is described in Hersteinsson’s model positing that sociality is further afected by a cost–beneft trade-of related to predation pressure. In the arctic fox (Vulpes lagopus), group-living follows a regional trade-of in resources’ availability and intra-guild predation pressure. However, the efect of local fuctuations is poorly known, but ofers an unusual opportunity to test predictions that difer between the two hypotheses in systems where prey availability is linked to intra-guild predation. Based on 17-year monitoring of arctic fox and cyclic rodent prey populations, we addressed the Resource Dispersion Hypothesis and discuss the results in relation to the impact of predation in Hersteinsson’s model. Group-living increased with prey density, from 7.7% (low density) to 28% (high density). However, it remained high (44%) despite a rodent crash and this could be explained by increased benefts from cooperative defence against prey switching by top predators. We conclude that both resource abundance and predation pressure are factors underpinning the formation of social groups in fuctuating ecosystems.en_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.subjectCooperative defenceen_US
dc.subjectGroup sizeen_US
dc.subjectIntra-guild predationen_US
dc.subjectResource dispersionen_US
dc.titleResources and predation: drivers of sociality in a cyclic mesopredatoren_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.rights.holder© 2022 The Authorsen_US
dc.subject.nsiVDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økologi: 488en_US
dc.relation.projectEU: EU-LIFE through SEFALOen_US
dc.relation.projectEU: EU-LIFE through SEFALO+en_US
dc.relation.projectEU: EU/Interreg Sweden Norway Felles Fjellrev Ien_US
dc.relation.projectEU: EU/Interreg Sweden Norway Felles Fjellrev IIen_US
dc.relation.projectSwedish Research Council: FORMAS (No. 2015–1526)en_US
dc.relation.projectAndre: Fjällräven International ABen_US
dc.relation.projectAndre: World Wildlife Found Sweden (WWF)en_US

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