Case Study – Atlantic Salmon
Atlantic Salmon is Disappearing
In Maine and much of the New England coast the US Fish and Wildlife listed this species under the Endangered Species Act due to significant decreases in returning salmon. Historically more than 500 000 fish returned to these rivers. However, estimates over the last few years remain low around 2000 fish. In Maine, research has shown that a distinct population segment (DPS) of fish exist, having novel life history traits.
These DPS fish are at critically low numbers in recent years having only about 33 estimated fish return to 8 rivers in Maine (2002). Many factors are thought to be responsible for their decline including, but not limited to dams, pour stocking practices, air pollution, habitat degradation invasive species introduction, and marine mortality. Stake holders have interest in restoring this species to New England.
Information Source: Andrew Gingerich, Atlantic Salmon Imperilment in North Eastern US - Learning Module