4.8 Article

Climate change contributes to widespread declines among bumble bees across continents

Journal

SCIENCE
Volume 367, Issue 6478, Pages 685-+

Publisher

AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aax8591

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Funding

  1. Natural Sciences and Engineering Research Council of Canada (NSERC)
  2. University Research Chair in Macroecology and Conservation at the University of Ottawa
  3. Canada Foundation for Innovation
  4. Royal Society
  5. NSERC Postgraduate Scholarship
  6. Royal Society University Research Fellowship
  7. UK Natural Environment Research Council [NE/R010811/1]
  8. NERC [NE/R010811/1] Funding Source: UKRI

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Climate change could increase species' extinction risk as temperatures and precipitation begin to exceed species' historically observed tolerances. Using long-term data for 66 bumble bee species across North America and Europe, we tested whether this mechanism altered likelihoods of bumble bee species' extinction or colonization. Increasing frequency of hotter temperatures predicts species' local extinction risk, chances of colonizing a new area, and changing species richness. Effects are independent of changing land uses. The method developed in this study permits spatially explicit predictions of climate change-related population extinction-colonization dynamics within species that explains observed patterns of geographical range loss and expansion across continents. Increasing frequencies of temperatures that exceed historically observed tolerances help explain widespread bumble bee species decline. This mechanism may also contribute to biodiversity loss more generally.

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