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Invasive Species Reintroduce Toxic Chemicals to Green Bay Food Web
Between 1954 and 1971, polychlorinated biphenyls, also known as PCBs, were discharged into the Lower Fox River in northeastern Wisconsin by manufacturers of carbonless copy paper, said Beth Olson, water program director for the Wisconsin Department of Natural Resources’ East District.

The river flows north from Lake Winnebago and discharges into Lake Michigan’s Green Bay.

PCBs are potentially cancer-causing and may harm reproductive, neurological and immune systems, according to the Environmental Protection Agency. The chemical was federally banned in 1979.

Although the contaminants have been buried in the sediments, two invasive species – the quagga mussel and round goby – can allow a group of toxic chemicals deposited more than 45 years ago to reenter the food web, passing them to predatory fish and possibly people.


 
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Big Roche-a-Cri Lake District Harvesting Program - The Big Roche-a-Cri Lake District was formed in 1988 and at the very first meeting, the first motion that was made was to buy a weed harvester. Today they have a total of four; two five-foot harvesters, one seven-foot harvester, and one ten-foot harvester.


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