Bees that make their homes in plant stems face a higher immediate threat from climate-driven temperature increases, according to a study from Australian evolutionary ecologists. Ground-nesting bees, by contrast, appear better equipped to escape extreme heat.
The research highlights how different nesting behaviors shape species' resilience to global warming. As temperatures climb, stem-nesting bees may lack the buffering capacity that soil provides, putting them at greater short-term risk.
Published by the team of Australian scientists, the findings underscore a critical but understudied dimension of insect vulnerability. The study did not specify exact temperature thresholds or geographic ranges.
The implications extend beyond bee conservation: many crop-pollinating species rely on stem habitats. Loss of these bees could disrupt agricultural ecosystems and food production.
Further research is needed to quantify population-level effects and explore whether artificial nesting structures might offer refuge.