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Wetlands exist on every continent, except Antarctica. [3] The water in wetlands is either freshwater, brackish or saltwater. [2] 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 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. The primary factor that distinguishes wetlands from other land forms or water bodies is the characteristic vegetation of aquatic plants, adapted to the unique hydric soil. Wetlands play a ...
The Ramsar classification of wetland types is intended as a means for fast identification of the main types of wetlands for the purposes of the convention. [2] The wetlands are classified into three major classes: Marine/coastal wetlands; Inland wetlands; Human-made wetlands
The two main types of aquatic ecosystems are marine ecosystems and freshwater ecosystems. [1] Freshwater ecosystems may be lentic (slow moving water, including pools , ponds , and lakes ); lotic (faster moving water, for example streams and rivers ); and wetlands (areas where the soil is saturated or inundated for at least part of the time).
Lake ecosystems are a prime example of lentic ecosystems. Lentic refers to stationary or relatively still water, from the Latin lentus , which means sluggish. Lentic waters range from ponds to lakes to wetlands , and much of this article applies to lentic ecosystems in general.
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.
Terrestrial ecoregions of the world. This is a list of terrestrial ecoregions as compiled by the World Wildlife Fund (WWF). The WWF identifies terrestrial, freshwater, and marine ecoregions.
For example, ecosystems can be quite different if situated in a small depression on the landscape, versus one present on an adjacent steep hillside. [ 9 ] : 39 [ 10 ] : 66 Other external factors that play an important role in ecosystem functioning include time and potential biota , the organisms that are present in a region and could ...