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Thermal constraints on body size depend on the population position within the species' thermal range in temperate songbirds

Abstract : There is mounting evidence that climate warming can induce morphological changes locally, particularly size reduction. However, the direction of thermal stress may differ between climatic regions. We predicted that morphological response to temperature fluctuations should vary throughout species ranges, depending on the local climate. Hot temperature anomalies are expected to induce size reduction in hot regions where species live close to their upper thermal limit, whereas size stasis (or increase) would be expected in cold regions, where species live close to their lower thermal limit.
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Submitted on : Tuesday, October 8, 2019 - 2:44:09 PM
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Nicolas Dubos, Olivier Dehorter, Pierre-Yves Henry, Isabelle Le Viol. Thermal constraints on body size depend on the population position within the species' thermal range in temperate songbirds. Global Ecology and Biogeography, Wiley, 2019, 28 (2), pp.96-106. ⟨10.1111/geb.12805⟩. ⟨hal-02307459⟩

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