Invasive Species

Credit US Department of Agriculture

The Great Lakes ecosystem has been severely damaged by more than 180 invasive and non-native species. Species such as the sea lamprey, zebra mussel and alewife degrade habitat, out-compete native species and damage the fishing industry.

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Dave Sandford

The Great Lakes offer lots of spookiness -- from century-old shipwrecks to blood-sucking animals. For Halloween, we pulled together some of the creepiest photos. Take a look -- if you dare.

Submitted Art Paul Zybczynski

There’s some bad news in the Great Lakes and it’s all about the sea lamprey, an eel-like creature that literally sucks the life out of fish. They do a lot of damage and now they’re on the rise in some lakes.

That trend has stumped scientists.


Shutterstock/Vladimir Wrangel

Researchers recently announced the discovery of over 7,000 grass carp eggs in a Lake Erie tributary.  The good news? This isn’t the Asian carp species we’re trying to prevent from entering the Great Lakes.  The bad news? Grass carp pose a different threat. 

Asian carp is a catch-all term for four different species of invasive carp: black, grass, silver, and bighead. 

USDA

The US Department of Agriculture is asking residents along the Great Lakes corridor and beyond to watch out for an invader- the Asian Longhorned Beetle (ALB).


Invasive or not? A Great Lakes puzzle

Aug 23, 2017
Bloody red shrimp / USGS

Around the Great Lakes, millions of dollars are spent to fight invasive species like Asian carp. They cause a lot of damage. But when scientists discover a new animal or plant in the region, it’s not always clear if it’s harmful - or helpful.

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