Geographic Variation in Bumblebee Flight Morphology Suggests Aerodynamic Limitations on Upslope Range Shifts
Geographic ranges of diverse species have shifted poleward and up mountain slopes in response to warming climate. Upslope shifts facilitate tracking of climatic niches over short geographic distances. However, flying organisms moving upslope encounter a novel challenge – reduced air density limiting force production of wings. Whether flying insects may overcome this limitation to upslope shifts through changing flight morphology is largely unknown. Recent studies reveal climate-driven northward and upslope range shifts for dozens of bumblebee (genus Bombus) species, which thrive in diverse ...
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