Emerging empirical evidence indicates that nearshore-associated freshwater habitats, including pocket estuaries and streams, offer juvenile salmon refuge from predation, increased food resources like insects, and additional time to make the physiological transformation from freshwater to saltwater. While quantitative studies are limited, a combination of historical and anecdotal reports describes salmonid use of multiple estuarine and freshwater habitats in San Juan County. Recent field research by Echeverria and Barsh documented the presence of salmonid species of multiple age classes and species, including Coho, chum and sea run cutthroat at lower stream habitat sites on Orcas and San Juan Islands. Multiple species of out-migrating young salmon have been documented in shallow marine waters within San Juan County from February through September, including juvenile chinook, coho, chum and pink salmon. |
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