Salt Marsh Dieback and the Purple Marsh Crab on Nantucket

Unexplained die off of salt marsh plants, particularly along creek edges and the low tide line, has become an increasing issue along the New England coast since the 1990s. Along marsh creek banks and harbor edges, salt marsh plants (particularly salt marsh cordgrass or Spartina alterniflora) began disappearing, leaving behind large swaths of exposed soil, filled…

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Salt Marsh Construction at Medouie Creek

The Medouie Creek Wetland is a large wetland along the north side of Polpis Harbor on Nantucket Island.  This wetland was historically one large salt water marsh, directly connected to the harbor, getting daily tides washing over it.  Sometime in the 1930s, a dike was created to build a road, allowing people access to the…

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