Freshwater marsh

The deeper ones are home to many species, including large fish such as the northern pike and carp.

[12] The soils in freshwater marshes have high organic matter due to slow decomposition rates and are often black or brown.

Aspects of the water like depth, velocity, oxygen concentration, and temperature change frequently.

[14] Fresh water marshes hold a significant amount of the worlds organic carbon, as much as a third.

Many different types of food are produced within a freshwater marsh like fruits, rice, fish, and vegetables such as taro.

[14] Freshwater marshes also provide recreational services like fishing, bird-watching, water fowl hunting, and trapping.

Marshes can slow down the rate at which water is traveling and create a buffer zone to stop flooding.

These marshes are not connected to rivers, lakes or oceans, but can be and frequently are fed by groundwater springs or seepages.

[23]Another way to restore freshwater marshes is to break down levees, dikes, and berms that impede rivers from flooding.

The Florida Everglades represent the largest contiguous freshwater marsh in the entire world.

[25] This immense marsh covers 4,200 square miles (11,000 km2) and is located in the southern tip of Florida.

These wet depressions or alligator holes are important to fish, reptiles, and amphibians during the dry season.

[7] Continuous proposals for rerouting the river that fills the marsh is the main cause of concern for the future of this wetland.

Lake Naivasha is surrounded by tropical, freshwater marshes in the extensive 6,500 kilometer rift valley.

[27] The Mesopotamian Marshlands were once the largest wetland ecosystem in the Middle East, covering an area of 15,000 to 20,000 square kilometers.

[27] In the 1980s and 1990s, this marshland was drained by upstream dams and water control structures, down to 10% of the original area.

[27] The marshland is located on the intercontinental flyway of migratory birds and is used by two-thirds of West Asia's water fowl.