Bumblebees face extinction as population drops by 46%

A bumblebee draws nectar from the flowers of a cherry tree in a garden outside Moscow on May 12, 2018.

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A bumblebee draws nectar from the flowers of a cherry tree in a garden outside Moscow on May 12, 2018.
  • Bumblebees are the best pollinators we have in wild landscapes.
  • Bee populations are declining, and if they continue at this pace, ‘many of these species could vanish forever,’ researchers say.
  • Hotter and more frequent extremes in temperatures are responsible for the declining population.

Climate change contributed to drastic declines in the population and diversity of bumblebees across North America and Europe, according to a long-term study of more than 60 bee species published Thursday in the journal Science.

Researchers discovered bumblebees are disappearing at rates “consistent with a mass extinction.”

The scientists said North America’s bumblebee populations fell by 46% during the two time periods the study used – from 1901 to 1974 and from 2000 to 2014.

Bee populations were hardest hit in warming southern regions such as Mexico, because of more frequent extreme warm years, which exceeded the species’ historical temperature ranges, according to the study.

“If declines continue at this pace, many of these species could vanish forever within a few decades,” study lead author Peter Soroye, a Ph.D. student at the University of Ottawa, said in a statement.

“We’ve known for a while that climate change is related to the growing extinction risk that animals are facing around the world. In this paper, we offer an answer to the critical questions of how and why that is,” Soroye said. “We find that (bee) species extinctions across two continents are caused by hotter and more frequent extremes in temperatures.”

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