The mangrove trees that make up these swamps form along the Gulf. They are frequently found near coastal marshes. Red mangroves form closest to the gulf and have the most exposure to salt water. Black mangroves are further inland but are filled with sea water at high tide. White mangroves are the furthest inland and have the least influx of salt water.
Mangroves contribute to the productivity of bordering estuaries.
Leaf fall provides food for countless organisms ranging from bacteria to large fish. Many of the mangrove swamps are owned by the government and are well protected. Freshwater Marshes Unlike coastal marshes, these wetlands rely on fresh water. The plants here are usually wetland grasses, rushes or sedges. You will also find green, non-woody shrubs growing in communities.