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Reuters: Ships entering the Great Lakes should be made to kill all the creatures that hitch a ride in their ballast tanks, environmental groups said on Tuesday, challenging as too lax a proposed government standard to combat invasive species.
Zebra mussels, spiny water fleas, round gobies and other invaders brought into the lakes in ships' ballast water have damaged the Great Lakes' $7 billion fishery and allowed algae - some that produce toxins that foul the world's largest body of fresh surface water......
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Tough rules sought to keep invasive species from Great Lakes
Posted by Washington Post: Juliet Eilperin on February 21st, 2012
Posted in Water Conservation