Invasive Species in the Great Lakes

This article focusses on the effect of the zebra muscle on the Lake Michigan ecosystem and touches on the alewife, an invasive speices of fish originally from the ocean. This informative article describes the impacts the zebra muscle has made - including it's effect on water quality, realtion to the success of other invasive speices, the sewage smell near Milwaukee, and its deadly effect on native wildlife - as well as a brief history of the alewife.