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Herbicide Resistant Milfoil in Silver Lake
Silver Lake was so choked with aquatic weeds last summer that it was difficult to enjoy boating, swimming and fishing. The thick canopy of vegetation floating on the surface water turns out to be a mix of 20 different plant species, but not surprisingly, Eurasian watermilfoil, an aquatic invasive species, accounts for 60 percent of the growth.

Of the 491 test established test sites on the lake, 213 had varying densities of the milfoil. Unfortunately it also seems to be hybrid milfoil that is resistant to chemical treatment. Samples of the suspected herbicide resistant milfoil were sent to Grand Valley State University in Michigan for DNA analysis.

 
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Failing Lakes in Florida - The United States Environmental Protection Agency has set limits on the concentrations of total nitrogen, total phosphorus, and algal chlorophyll allowed in Florida lakes starting in March 2012. If one or more of the respective concentrations exceeds these criteria, the lake is considered to be impaired due to pollution and subject to a variety of regulatory actions.


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