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invasive mussels

Mussel-Phosphorus puzzle: Invasive mussels are reshaping the chemistry of the Great Lakes

18 hours ago
D. Jude / University of Michigan via NOAA/GLERL Flickr, CC BY-SA 2.0

Since the late 1980s, four of the five Great Lakes have played host to an increasing number of invasive mussels. First came zebra mussels, followed shortly thereafter by quagga mussels, both members of the Dreissenid family whose native range includes the waters around Ukraine.

Today, the filter-feeders comprise more than 90% of the total animal biomass of the Great Lakes (barring Lake Superior, whose depth and water chemistry make it a less suitable habitat for the two species of mussel).

Lester Graham / Michigan Radio

If they choose to do so, the governors of the Great Lakes have less than three weeks to object to an Environmental Protection Agency proposal.

That proposal would exempt cargo ships that only travel in the Great Lakes from having to treat ballast water to stop the spread of aquatic invasive species. For years, the Great Lakes shippers say they were not responsible for invasive species; it was the ocean-going cargo ships that were the problem.

Great Lakes groups endorse Invasive Mussel Collaborative

Jul 23, 2019
Zebra mussels on a beach in Michigan
Michgian Sea Grant / Flickr - http://bit.ly/1xMszCg

Three binational Great Lakes coalitions announced their endorsement of the Invasive Mussel Collaborative as the “go-to forum” on developing solutions to the problems caused by invasive mussels in the Great Lakes. The three organizations are the Great Lakes Commission, International Joint Commission, and Great Lakes Fishery Commission.