Just a handful of wild bee species do most of the pollination work

Sasha Harris-Lovett, LA Times

Wild bees pollinate many crops, but some bees are busier than others.

On average, only 2% of wild bee species were responsible for 80% of the pollination visits witnessed by researchers around the world, according to a study published Tuesday in the journal Nature Communications.

“This study puts a spotlight on how few species actually do all the work,” said Mace Vaughan, co-director of the Pollinator Program at the Xerces Society, a nonprofit devoted to protecting invertebrates and their habitats.

David Kleijn, an ecologist at Wageningen University in the Netherlands, had an inkling that something like the 80-20 rule might be at work with wild bees. As he was studying the insects in farm fields in the Netherlands and in Southern Italy five years ago, he noticed something striking.

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