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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.
Different Types of Ecosystems. There are essentially two kinds of ecosystems; Aquatic and Terrestrial. Any other sub-ecosystem falls under one of these two headings. Terrestrial ecosystems Terrestrial ecosystems can be found anywhere apart from heavily saturated places.he two main kinds of grasslands ecosystems are: 1  Savanna: The tropical grasslands are dry seasonally and have few individual trees. 2  They support a large number of predators and grazers. 3  Prairies: It is temperate grassland, completely devoid of large shrubs and trees.