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Wetlands generally include swamps, marshes, bogs, and similar areas." [1] [2] [3] Wetlands can be valued in terms of their contributions to ecological, economic and social systems. Wetlands service these systems through multiple processes including water filtration, water storage and biological productivity. [4]
Wetlands exist on every continent, except Antarctica. [19] The water in wetlands is either freshwater, brackish or saltwater. [18] The main types of wetland are defined based on the dominant plants and the source of the water. For example, marshes are wetlands dominated by emergent herbaceous vegetation such as reeds, cattails and sedges.
A simplified definition of wetland is "an area of land that is usually saturated with water". [14] More precisely, wetlands are areas where "water covers the soil, or is present either at or near the surface of the soil all year or for varying periods of time during the year, including during the growing season". [15]
The Kissimmee River is a river in south-central Florida, United States that forms the north part of the Everglades wetlands area. The river begins at East Lake Tohopekaliga south of Orlando, flowing south through Lake Kissimmee into the large, shallow Lake Okeechobee.
A blackwater river is a type of river with a slow-moving channel flowing through forested swamps or wetlands. Most major blackwater rivers are in the Amazon Basin and the Southern United States . The term is used in fluvial studies, geology , geography , ecology , and biology .
In addition to designation as a Biosphere Reserve, 2,500 km 2 (620,000 acres) within Colorado River Delta (Humedales del Delta del Río Colorado) are designated as a Ramsar Wetland under the U.N. Convention on Wetlands. Ramsar Wetlands are wetlands of international importance in terms of their ecology, botany, zoology, limnology or hydrology.
A slough in Nebraska in the United States A slough in Maxwell Township, Lac qui Parle County, Minnesota in the United States.. A slough (/ s l uː / ⓘ [1] [2] or / s l aʊ / ⓘ) [1] [2] [3] is a wetland, usually a swamp or shallow lake, often a backwater to a larger body of water. [4]
Although the region appears flat, the wearing away of the limestone in some areas created slight valleys and plateaus—a difference of inches in elevation—that affected not only the flow of water, but also types of vegetation present. The Everglades are unique; no other wetland system in the world is nourished primarily from the atmosphere. [5]