Break in the Great Lakes Food Web?

A major link in the food web is disappearing from the Great Lakes. Researchers are concerned that its absence will damage fish populations. The Great Lakes Radio Consortium’s Lester Graham has more:

Fish Release Scaled Back

There’s a shortage of fish food in the Great Lakes, so Wisconsin and
three other states have agreed to reduce the number of Chinook salmon
released into Lake Michigan in the spring. The action comes because a
limited food supply in the lake could threaten other fish populations.
The Great Lakes Radio Consortium’s Patty Murray reports: