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Lake Erie Phosphorus Pollution is Ideal for Invasive White Perch
The phosphorus-fueled harmful algal blooms around western Lake Erie are finally going away as water temperatures have fallen below the 60-degree mark in recent days. The phosphorus pollution causing the blooms, however, has also provoked changes in the fish populations of Lake Erie.

White perch, an invasive species thriving in the brackish waters of the East Coast, entered Lake Erie through the Welland Canal a few decades ago.

Their numbers have been on the rise in recent years. The white perch prosper in nutrient-rich water, unlike walleye, yellow perch and smallmouth bass. The phosphorus pollution that prompts the HABs and the noxious green slime in late summer and early fall has turned Lake Erie's Western Basin into eutrophic, or nutrient-rich waters more suited for white perch than the native favorites of fishermen.



 
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Monitoring Efforts Continue for Water Hyacinth and Water Lettuce - Monitoring efforts are continuing at both the US Fish and Wildlife Service and the Upper Mississippi River National Fish and Wildlife Refuge to help curb two invasive species. The water hyacinth and water lettuce were discovered in the Upper Mississippi on the shores of Lake Onalaska in October of this year.


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