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roamer65

(36,745 posts)
2. It's mainly due to agricultural runoff.
Sat Aug 2, 2014, 07:19 PM
Aug 2014

Algae just love the phosphorus from the fertilizers. The further north you go in the Great Lakes, the less the problem with the algae. Less agriculture up north.
Even the zebra mussels are affected by the runoff. There are higher concentrations of the mussels in areas of higher runoff, due to increased calcium levels. The little suckers hate colder water and low calcium (i.e. Lake Superior)

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