Restored tidal marsh around San Francisco Bay (IMAGE)

University of California - Berkeley

Restored tidal marsh around San Francisco Bay

Caption

The San Francisco Bay Area's tidal marshes, such as this restored marsh in Hayward, California, are home to many animals adapted to saltwater environments, including a local subspecies of Savannah sparrow and the salt marsh harvest mouse. These adaptations, caused by specific gene variants, can be compromised by outbreeding with migrant populations that do not have these varients.

Credit

Phred Benham, UC Berkeley

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