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dc.contributor.authorBraschler, B.
dc.contributor.authorDuffy, G.A.
dc.contributor.authorNortje, E.
dc.contributor.authorKritzinger-Klopper, S.
dc.contributor.authordu Plessis, D.
dc.contributor.authorKarenyi, N.
dc.contributor.authorLeihy, R.I.
dc.contributor.authorChown, S.L.
dc.date.accessioned2021-02-02T09:53:11Z
dc.date.available2021-02-02T09:53:11Z
dc.date.issued2020
dc.identifier.citationBraschler, B., Duffy, G.A., Nortje, E., Kritzinger-Klopper, S., du Plessis, D., Karenyi, N., Leihy, R.I. and Chown, S.L. (2020). Realised rather than fundamental thermal niches predict site occupancy: implications for climate change forecasting. Journal of Animal Ecology 89, 2863-2875. DOI: 10.1111/1365-2656.13358.en_ZA
dc.identifier.urihttp://hdl.handle.net/123456789/2926
dc.description.abstractThermal performance traits are regularly used to make forecasts of the responses of ectotherms to anthropogenic environmental change, but such forecasts do not always differentiate between fundamental and realised thermal niches. Here we determine the relative extents to which variation in the fundamental and realised thermal niches accounts for current variation in species abundance and occupancy and assess the effects of niche-choice on future-climate response estimations. We investigated microclimate and macroclimate temperatures alongside abundance, occupancy, critical thermal limits, and foraging activity of 52 ant species (accounting for > 95% individuals collected) from a regional assemblage from across the Western Cape Province, South Africa, between 2003 and 2014. Capability of a species to occupy sites experiencing the most extreme temperatures, coupled with breadth of realised niche, explained most deviance in occupancy (up to 75%), while foraging temperature range and body mass explained up to 50.5% of observed variation in mean species abundance. When realised niches are used to forecast responses to climate change, large positive and negative effects among species are predicted under future conditions, in contrast to the forecasts of minimal impacts on all species that are indicated by fundamental niche predictions.en_ZA
dc.language.isoenen_ZA
dc.subjectAbundanceen_ZA
dc.subjectbehaviouren_ZA
dc.subjectmacrophysiologyen_ZA
dc.subjectmicroclimateen_ZA
dc.subjectoccupancyen_ZA
dc.subjectthermal safety marginsen_ZA
dc.titleRealised rather than fundamental thermal niches predict site occupancy: implications for climate change forecastingen_ZA
dc.typeJournalArticlesen_ZA
dc.cibjournalJournal of Animal Ecologyen_ZA
dc.cibprojectNAen_ZA


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