Sunday, December 27, 2015

Wild bee decline threatens U.S. crop production

About 39 percent of U.S. croplands depend on pollinators — from apple orchards to pumpkin patches. Between 2008 and 2013, the number of bees in the contiguous United States declined in 23 percent, creating a mismatch between rising demand for pollination and a falling supply of wild bees. The first national study to map U.S. wild bees suggests they are disappearing in many of the country’s most important farmlands — including California’s Central Valley, the Midwest’s corn belt, and the Mississippi River valley. If losses of these crucial pollinators continue, the new nationwide assessment indicates that farmers will face increasing costs — and that the problem may even destabilize the nation’s crop production.

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