Mitsch, William J. School of Environment and Natural Resources, Ohio State University, Columbus, Ohio.
Fiedler, Peggy L. Natural Reserve System, University of California, Oakland, California.
Lee, Lyndon C. L. C. Lee & Associates, Inc., Seattle, Washington.
Stewart, Scott R. L. C. Lee & Associates, Inc., Seattle, Washington.
Last reviewed:December 2018
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An ecosystem that forms a transitional area between terrestrial and aquatic components of a landscape. Wetlands are areas characterized by a high content of soil moisture. They typically are shallow-water to intermittently flooded ecosystems, resulting in a unique combination of hydrology, soils, and vegetation. Examples of wetlands include swamps (Fig. 1), freshwater and saltwater marshes, bogs, fens, muskegs, playas, vernal pools and ponds, floodplains, organic and mineral soil flats, and tundra. See also: Bog; Ecological communities; Ecology; Ecosystem; Freshwater ecosystem; Muskeg; Playa; Salt marsh; Soil; Soil ecology; Swamp, marsh, and bog; Tundra; Water
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