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New research confirms plight of bumble bees, persistence of other bees in Northeast
Date:3/4/2013

A new study shows that although certain bumble bees are at risk, other bee species in the northeastern United States persisted across a 140-year period despite expanding human populations and changing land use. Led by Rutgers University and based extensively on historical specimens from the American Museum of Natural History and nine other bee collections, the study informs conservation efforts aimed at protecting native bee species and the important pollinator services they provide. The results are published today in Proceedings of the National Academy of Sciences.

Eighty-seven percent of the world's flowering plants, including most of the leading global food crops, are pollinated by animals. Bees are considered the most important pollinators because of their efficiency, specificity, and ubiquity. However, despite concerns about pollinator declines, long-term data on the status of bee species are scarce.

In the new study, the researchers used new web-based software to compile 30,000 museum specimen records representing 438 bee species.

"A novel aspect of this study was the use of collaborative online tools that allowed data to be captured quickly and accurately across 10 institutions, many of which lacked pre-existing capabilities in this area," said John Ascher, a research scientist in the Museum's Division of Invertebrate Zoology and an author on the paper who led the data-collection effort.

From the years 1872 to 2011, the authors observed slight declines in the number of bee species in comparable samples from the northeastern United States. Statistical analysis revealed that only three species exhibited a rapid and recent population collapseall species of bumble bees, which also have been shown to be declining in previous studies. Other species, including the oil bee Macropis patellata, showed more gradual declines.

Although few species were found to have severely declined, more than half of all
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Contact: Kendra Snyder
ksnyder@amnh.org
212-496-3419
American Museum of Natural History
Source:Eurekalert  

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