Pollinators like bees, hoverflies, and birds are vital for maintaining healthy ecosystems and food production.However, climate change, particularly rising carbon dioxide levels, poses a significant threat to these species.New research highlights that larger bees, such as Bombus asiaticus and Xylocopa pubescens, are especially vulnerable to higher CO₂ concentrations.These bees show reduced populations and genetic diversity in areas with elevated CO₂, while smaller pollinators may thrive in such environments.

The study, conducted across 25 sites in Pakistan, controlled for factors like temperature and humidity, revealing that larger-bodied pollinators face greater challenges.This is concerning because large bees are more efficient pollinators, carrying more pollen and traveling longer distances.They also play a crucial role in plant reproduction and genetic spread.

The findings underscore the need for conservation efforts, including habitat protection, reducing pesticide use, and curbing greenhouse gas emissions.Australia, as a major fossil fuel exporter, contributes to global CO₂ levels, exacerbating the crisis.

The study emphasizes the importance of supporting native pollinators and adapting land management practices to mitigate the impacts of climate change on these critical species.