What is Saltmarsh, Write A Short Note on it

What is Saltmarsh, Write A Short Note on it

What is Saltmarsh, Write A Short Note on it

A salt marsh or salt marsh, 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 salt water or brackish water that is regularly flooded by the tides.

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  • It is dominated by dense stands of salt-tolerant plants such as herbs, grasses, or low shrubs.
  • These plants are terrestrial in origin and are essential to the stability of the salt marsh in trapping and binding sediments.
  • Salt marshes play a large role in the aquatic food web and the delivery of nutrients to coastal waters.
  • They also support terrestrial animals and provide coastal protection.
  • Salt marshes occur on low-energy shorelines in temperate and high-latitudes which can be stable or emerging, or submerging if the sedimentation rate exceeds the subsidence rate.
  • Commonly these shorelines consist of mud or sand flats (known also as tidal flats or abbreviated to mudflats) which are nourished with sediment from inflowing rivers and streams.
  • These typically include sheltered environments such as embankments, estuaries and the leeward side of barrier islands and spits.
  • In the tropics and sub-tropics they are replaced by mangroves; an area that differs from a salt marsh in that instead of herbaceous plants, they are dominated by salt-tolerant trees.
  • Most salt marshes have a low topography with low elevations but a vast wide area, making them hugely popular for human populations.
  • Salt marshes are located among different landforms based on their physical and geomorphological settings.
  • Such marsh landforms include deltaic marshes, estuarine, back-barrier, open coast, embayment and drowned-valley marshes.
  • Salt marshes are sometimes included in lagoons, and the difference is not very marked;