The Western bumble bee, a once-common bee in California, was not found in the recent UCR-led survey. resized using AI by SFLORG Credit: Rich Hatfield/Xerces Society |
Several species of California bumble bees have gone missing in the first statewide census of the fuzzy pollinators in 40 years. If they can be found, a recent court ruling could help save them.
Smaller-scale studies have documented significant declines in bumble bee populations around the world due to climate change, development of wild habitat, and the use of bee-killing pesticides.
Led by UC Riverside, this study was an effort to document changes in bumble bee populations across large geographic areas in California since the last such study was done in the 1980s.
It is important to have data that substantiates the bees’ health. Bumble bees can fly in cooler temperatures and lower light levels than many other bees, and help pollinate crops worth $3 billion annually in the U.S. They perform a type of pollination required for plants including tomatoes, peppers and cranberries.
For the updated data, UCR entomologist Hollis Woodard’s research group collected bees from 17 total sites representing six different ecosystems previously known to host a large variety of bumble bees.