... to date, at least an estimated 163 nonindigenous aquatic species have been introduced into the Great Lakes over the last 200 years? Of these, 85 have already been sighted in the St. Lawrence River. [More...]
... the first mention of Zebra Mussels in Great Lakes waters goes back to 1985? In Quebec, they were first observed in 1989 and their distribution is currently limited to the St. Lawrence River as far as the Montmagny islands and the Richelieu River. [More...]
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