Warming in the land of the midnight sun: breeding birds may suffer greater heat stress at high- vs low-Arctic sitesRyan O'Connor, Audrey Le Pogam, Kevin Young, Oliver Love, Christopher Cox, Gabrielle Roy, Francis Robitaille, Kyle Elliott, Anna Hargreaves, Emily Choy, Grant Gilchrist, Dominique Berteaux, Andrew Tam & François Vézina
Rising global temperatures are expected to increase reproductive costs for wildlife as greater thermoregulatory demands interfere with reproductive activities. However, predicting the temperatures at which reproductive performance is negatively impacted remains a significant hurdle. Using a thermoregulatory polygon approach, we derived a reproductive threshold temperature for an Arctic songbird–the snow bunting (Plectrophenax nivalis). We defined this threshold as the temperature at which individuals must reduce activity to suboptimal levels (i.e., < 4-times basal metabolic rate)...
1 citation reported since publication in 2021.
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