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How invasive species changed the Great Lakes forever

July 15th, 2015 | Posted by admin

How invasive species changed the Great Lakes forever, published by the Milwaukee Journal Sentinel, by Dan Egan.

MJS GREATLAKES

A primer on invasive species in the St. Lawrence River and Great Lakes. Worth a re-read this Invasive Species Awareness Week.

an excerpt: ” . . . the consequences of opening a nautical freeway into the Great Lakes for globe-roaming freighters proved disastrous — at least 56 non-native organisms have since been discovered in the lakes, and the majority arrived as stowaways in freighter ballast tanks.

These invaders have decimated native fish populations and rewired the way energy flows through the world’s largest freshwater system, sparking an explosion in seaweed growth that rots in reeking pockets along thousands of miles of shoreline. The foreign organisms are implicated in botulism outbreaks that have suffocated tens of thousands of birds on the eastern shore of Lake Michigan. They are among the culprits responsible for toxic algae blooms on Lake Erie that threaten public water supplies.”

The whole series deserves a close read. Find it here: http://ow.ly/PCvWJ

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