Shrinking alewife population could deplete Great Lakes salmon

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Credit: Flickr - U.S. Fish and Wildlife Service Northeast Region

Credit: Flickr – U.S. Fish and Wildlife Service Northeast Region

The alewife was once the scourge of the Great Lakes. The small, silver herring made its way into the basin through the St. Lawrence River in the late 19th century and proceeded to wreak havoc on the ecosystem. If you were around the region in the 1960s, you might remember the stench of thousands of dead alewives washing up on Great Lakes beaches. Now, scientists are concerned with a decline in the population of this invasive species and how the shrinking numbers of alewives could impact their main predator, the popular Chinook salmon.

Current State’s April Van Buren speaks with Randy Claramunt, a fisheries research biologist for the Michigan Department of Natural Resources, about how the alewife moved from unwanted invader to a critical link in the food web.

This segment was produced by WKAR’s Current State and is reproduced with permission.

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