On: Lake Michigan Is So Clear Right Now Its Shipwrecks...

[JoeAltmaier]

Still, it requires nitrogen to get an algae bloom, right? Has to come from somewhere.

[mattgrice → JoeAltmaier]

Phosphorus is the limiting nutrient, not nitrogen. But yes, it's nearly all from ag and wastewater.

[semi-extrinsic → mattgrice]

In the ocean, iron plays the role of phosphorus.

And it looks like the evidence for run off causing algal blooms in the Great Lakes is pretty convincing.