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A wetland is a land area that is saturated with water, either permanently or seasonally, such that it takes on the characteristics of a distinct ecosystem.here are four main kinds of wetlands â marsh, swamp, bog and fen (bogs and fens being types of mires). Some experts also recognize wet meadows and aquatic ecosystems as additional wetland types. The largest wetlands in the world include the swamp forests of the Amazon and the peatlands of Siberia.
Wetland Soils (Wetland Biogeochemistry). The transport and transformation of chemicals in ecosystems is known as biogeochemical cycling. The diverse hydrologic conditions in wetlands have a major influence on biogeochemical cycles.hosphorus is a major limiting nutrient in freshwater marshes, northern peatlands and deepwater swamps. It is more available in agricultural wetlands and saltmarshes. Phosphorus retention is often considered to be an important ecosystem function in wetlands and is often designed into constructed wetlands.