From: National Science Foundation
Published January 11, 2018 02:01 PM

Blame it on the rain: Study ties phosphorus loading in lakes to extreme precipitation events

In the Midwest, the problem is largely due to phosphorus, a key element in fertilizers that is carried off the land and into the water, where it grows algae as easily as it grows corn and soybeans.

Previous research had found that waterways receive most of their annual phosphorus load in only a dozen or two events each year, reports Steve Carpenter, director emeritus of the University of Wisconsin-Madison's Center for Limnology and lead author of a new paper published online in the journal Limnology and Oceanography.

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