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Salt marsh during low tide, mean low tide, high tide and very high tide (spring tide). A coastal salt marsh in Perry, Florida, USA.. A salt marsh, saltmarsh or salting, also known as a coastal salt marsh or a tidal marsh, is a coastal ecosystem in the upper coastal intertidal zone between land and open saltwater or brackish water that is regularly flooded by the tides.
Few terrestrial animals inhabit the coastal salt marsh. One endangered mammal is the salt marsh harvest mouse (Reithrodontomys raviventris) which occurs in the San Francisco Bay region. Likewise, only five species of birds are resident in this habitat and four are considered rare or endangered.
The saltmarsh sparrow (Ammospiza caudacuta) is a small New World sparrow found in salt marshes along the Atlantic coast of the United States. At one time, this bird and the Nelson's sparrow (Ammospiza nelsoni) were thought to be a single species, the sharp-tailed sparrow. Because of this, the species was briefly known as the "saltmarsh sharp ...
Where the shoreline is more protected, internationally important salt marshes can form, with several uncommon species. The salt marshes contains glassworts and common cord grass in the most exposed regions, with a succession of plants following on as the marsh becomes more established: first sea aster, then mainly sea lavender, with sea ...
These tides flood the salt marshes, bringing new life to one of my favorite features of a salt marsh, the salt pannes. This is also one of the best times to visit a marsh by kayak or canoe.
Of the several species of rodents in Florida, the subspecies of oldfield mouse are the biggest conservation concern, along with the Florida mouse and Florida salt marsh vole. Six of eight subspecies of the oldfield mouse (commonly named 'beach mice') are in endangered status, and one is extinct.
The salt-marsh harvest mouse is an endangered species endemic to the San Francisco Bay. Its salt marsh habitat could be highly impacted by sea-level rise. This organism is known to be found in these specific locales: Sonoma Creek discharge area known as the Napa Sonoma Marsh; Suisun Marsh, Solano County
Mats of salt hay grass are inhabited by many small animals and are an important food source for ducks and seaside sparrows. Newburyport Meadows, c. 1872–1878, by Martin Johnson Heade Sporobolus pumilus in a high marsh area. Saltmeadow cordgrass marshes serve as pollution filters and as buffers against flooding and shoreline erosion.