User:Hgadai/sandbox

Values and ecosystem services
Marshes have extremely high levels of biological production, some of the highest in the world, and therefore are important in supporting fisheries. Marshes provide reproductive habitat and nursey grounds for fish. Marshes also improve water quality by acting as a sink to filter pollutants and sediment from the water that flows through them. Marshes partake in water purification by providing nutrient and pollution intake, as well as retention and particle deposition. Marshes (and other wetlands) are able to absorb water during periods of heavy rainfall and slowly release it into waterways and therefore reduce the magnitude of flooding. Marshes also provide the services of tourism, recreation, education, and research.