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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