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Pollution Erodes Bees' Chemical GPS
27 Oct
Summary
- Air pollution significantly impairs bees' ability to find flowers.
- Ozone and nitrous oxides reduce pollinator performance by up to 68%.
- Searching efficiency is most affected, decreasing by 67%.
Invisible chemical signals that bees use to locate flowers are being degraded by air pollution, scientists have discovered. This atmospheric interference significantly hampers their ability to forage and pollinate, impacting crucial food crops.
Research indicates that elevated levels of ozone and nitrous oxides can reduce pollinator performance by an average of 42% and 46% respectively. When combined, these pollutants may decrease performance by as much as 68%, with searching efficiency being the most severely affected, declining by 67%.
Future projections suggest that increased ground-level ozone, especially in rural areas, will pose a growing threat to bees and butterflies over the next two decades. Countries like India and China are expected to face the most severe pollinator disruption due to high pollution levels.
While a long-term decrease in certain pollutants is predicted after 2050, this depends on global adherence to emission targets. Even as air quality improves, shifts in plant-pollinator interactions may create new challenges for conservation efforts.
