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Mapping evaporative water loss in desert passerines reveals an expanding threat of lethal dehydration [PNAS]

Keywords : avian ecology, physiological ecology, climate change, heat waves, water balance

par Frédéric Magné - publié le

Extreme high environmental temperatures produce a variety of consequences for wildlife, including mass die-offs. Heat waves are increasing in frequency, intensity, and extent, and are projected to increase further under climate change. However, the spatial and temporal dynamics of die-off risk are poorly understood. Here, we examine the effects of heat waves on evaporative water loss (EWL) and survival in five desert passerine birds across the southwestern United States using a combination of physiological data, mechanistically informed models, and hourly geospatial temperature data.(...)

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