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Map: Not All Phosphorus Is the Same
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A breakdown of the different types of phosphorous in Ohio's Maumee and Sandusky rivers that have led to algal blooms in Lake Erie since the 1970s.
![](https://www.circleofblue.org/wp-content/uploads/2014/07/8552224480_72c24316fa_o-495x400.jpg)
Big Toxic Algal Bloom Again in Forecast for Lake Erie
Lake continues trend of harmful and unsightly effect of nutrient…
![](https://www.circleofblue.org/wp-content/uploads/2014/04/8740853295_68b357fb45_z.jpg)
Cause of Lake Erie’s Harmful Algal Blooms Gains More Certainty
New research finds that agricultural practices lead to biggest…
![Toxic Algae](https://www.circleofblue.org/wp-content/uploads/2014/01/8551123861_c9ecfee932_o.jpg)
Joint U.S.-Canada Agency Calls for Big Phosphorus Reductions in Lake Erie
Curbing harmful algal blooms and oxygen-deprived dead zones in…