In recent years, many lakes in the upper Midwest have been experiencing unprecedented algae blooms. These blooms threaten fish and affect recreational activities. A key culprit implicated in overgrowth of algae in lakes is phosphorus (P). Lake Pepin, located on the Minnesota/Wisconsin border, has seen increasing phosphorus concentrations over time. Researchers are now trying to identify upstream factors that could explain this increase.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/wjgC_Sw5BgQ/141111123733.htm
Tracing the course of phosphorus pollution in Lake Pepin
11 noviembre 2014
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