Large stands of Phragmites australis often indicate that salt water flow is restricted in marshes. This non-native grass is beautiful, but salt marshes in the northeastern United States should be comprised of Spartina grasses and other native salt marsh plants.

Image ID: r0011812, NOAA's Restoration Center Collection
Location: Brewster/Dennis, Barnstable County, Massachusetts
Photo Date: Mid - February, 2001
Credit: NOAA Restoration Center, Louise Kane

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