Coastal Mountains Land Trust invites the community to join fisheries biologist Peter Ruksznis on a salmon ecology walk from 2 to 3:30 p.m. Thursday, Oct. 23, along the Ducktrap River.

The Ducktrap River’s pristine and undisturbed corridor makes it one of only eight rivers in the United States that supports a wild Atlantic salmon population.

Ruksznis, a fisheries biologist with the Department of Marine Resources, will lead a walk on the river to explain Atlantic salmon ecology and biology, and to look for salmon redds, the depressions in the riverbed where female salmon lay their eggs.

Participants should meet at the Tanglewood parking lot. As group size is limited to 15, advance reservations are requested. Call 236-7091 or email info@coastalmountains.org.

For more than a decade the land trust has been working to conserve the Ducktrap River and its watershed, in large part to protect the habitat of these endangered fish. To date, 84 percent of the land on the river has been permanently conserved, including the 1,136-acre Ducktrap River Preserve owned and managed by the Land Trust.

For more information about this event, and to find directions to the land trust office and Fernalds Neck Preserve, call the number above or visit coastalmountains.org.