NATURE · INTERPRETIVE SIGN

Anatomy of a Tidal Marsh

George Washington Memorial Parkway, Virginia
· George Washington Memorial Parkway
Nature
4
Dyke Marsh functions through natural systems much like a body: winding marsh channels called guts and the Potomac River circulate Chesapeake Bay saltwater into the marsh where it mixes with fresh water, nutrients, and sediments; green marsh plants filter pollution from the water, slow sediment movement, produce oxygen, and capture nitrogen; and wetland forests anchor the shoreline, reduce erosion, and shelter Dyke Marsh and nearby people.
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Belle Haven, Virginia · United States
George Washington Memorial Parkway, Virginia
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