The experts we surveyed pointed to disappearing native species as a major threat to the health of the Great Lakes. Some native fish populations are declining. The Great Lakes Radio Consortium's Lester Graham reports on how the decline of one of those organisms is of most concern.

The coaster brook trout is on the brink of disappearing. It used to be found in great numbers, but human impacts have hurt the fish. The Great Lakes Radio Consortium's Chris McCarus reports on efforts to rescue the fish, and how these efforts could help the Great Lakes too.

In our next report in the series, Ten Threats to the Great Lakes, we hear about native species that are in trouble. The Great Lakes Radio Consortium's David Sommerstein reports that few species illustrate the dangers of the multiple threats to the Great Lakes as the American Eel.

We've been bringing you reports from the Great Lakes Radio Consortium's series Ten Threats to the Great Lakes. One of the threats experts identified is disappearing native species. One disappearing species that has scientists worries is the ancient fish, the lake sturgeon. The Great Lakes Radio Consortium's Celeste Headlee has that story.