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dc.contributor.authorMason, Tom H Een_UK
dc.contributor.authorBrivio, Francescaen_UK
dc.contributor.authorStephens, Philip Aen_UK
dc.contributor.authorApollonio, Marcoen_UK
dc.contributor.authorGrignolio, Stefanoen_UK
dc.description.abstractThe range-shifts of many species are lagging behind climate change, meaning that those species are likely to experience increases in average ambient temperature. Heat-sensitive species may experience increasingly precarious trade-offs between investment in thermoregulation versus other key processes as the climate warms. We investigated the potential for trade-offs to exist between behavioral thermoregulation and foraging, studying a typical heat-sensitive endotherm: the Alpine ibex (Capra ibex). Ibex use higher altitudes when it is hotter, which could restrict them from more profitable foraging areas at lower altitudes. We investigated this potential trade-off using data on the altitude-use and activity budgets of 43 marked males collected during the vegetation growing season in Gran Paradiso National Park, Italy. We used structural equation modeling to assess the support for models linking ambient temperature, altitude-use, vegetation productivity, and foraging time. Ibex migrated to higher altitudes during spring and summer, maintaining their ambient temperature within a very narrow band. Consequently, when it was warmer ibex utilized areas that were less productive, as indicated by lower normalized difference vegetation indices, and consumed lower quality forage, as indicated by lower levels of fecal crude protein. Ibex did not compensate behaviorally for reduced forage productivity by adjusting their foraging effort. We identify a trade-off between thermoregulation and foraging in ibex, which could affect this species negatively in the future. Such trade-offs could be a general phenomenon for heat-sensitive species. Our study reveals that behavioral thermoregulation can exert a strong influence on animal distributions, even overriding resource productivity in importance.en_UK
dc.publisherOxford University Pressen_UK
dc.relationMason THE, Brivio F, Stephens PA, Apollonio M & Grignolio S (2017) The behavioral trade-off between thermoregulation and foraging in a heat-sensitive species. Behavioral Ecology, 28 (3), pp. 908-918.
dc.rightsThe publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study.en_UK
dc.subjectAlpine ibexen_UK
dc.subjectbehavioral thermoregulationen_UK
dc.subjectclimate changeen_UK
dc.titleThe behavioral trade-off between thermoregulation and foraging in a heat-sensitive speciesen_UK
dc.typeJournal Articleen_UK
dc.rights.embargoreason[arx057.pdf] The publisher does not allow this work to be made publicly available in this Repository therefore there is an embargo on the full text of the work.en_UK
dc.citation.jtitleBehavioral Ecologyen_UK
dc.type.statusVoR - Version of Recorden_UK
dc.contributor.affiliationBiological and Environmental Sciencesen_UK
dc.contributor.affiliationUniversity of Sassarien_UK
dc.contributor.affiliationDurham Universityen_UK
dc.contributor.affiliationUniversity of Sassarien_UK
dc.contributor.affiliationUniversity of Sassarien_UK
dc.description.refREF Compliant by Deposit in other institution's Repository: Durham's repository on 24/04/2017:
Appears in Collections:Biological and Environmental Sciences Journal Articles

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