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An ecoregion (ecological region) is an ecologically and geographically defined area that is smaller than a bioregion, which in turn is smaller than a biogeographic realm. Ecoregions cover relatively large areas of land or water, and contain characteristic, geographically distinct assemblages of natural communities and species .
Ecoregions may be identified by similarities in geology, physiography, vegetation, climate, soils, land use, wildlife distributions, and hydrology. The classification system has four levels, but only Levels I and III are on this list. Level I divides North America into 15 broad ecoregions; of these, 12 lie partly or wholly within the United States.
This is a list of terrestrial ecoregions as compiled by the World Wildlife Fund (WWF). The WWF identifies terrestrial, freshwater, and marine ecoregions. The terrestrial scheme divides the Earth's land surface into 8 biogeographic realms, containing 867 smaller ecoregions. Each ecoregion is classified into one of 14 major habitat types, or biomes.
Ecoregions may be identified by similarities in geology, physiography, vegetation, climate soils, land use, wildlife distributions, and hydrology. The classification system has four levels. Only the first three levels are shown on this list. "Level I" divides North America into 15 broad ecoregions.
[5] Namaqua bioregion This is a cool temperate region between Sylvia Hill just north of Lüderitz in Namibia to Cape Columbine. Sylvia Hill is the northern boundary of a large upwelling cell. The bioregion has large-scale intensive upwelling and nutrient rich water, and the cold Benguela current. The region is known for low oxygen events and it ...
A bioregion is simply an indenfidable geographic area whose life systems are self-contained, self- sustaining and self renewing. A bioregion you might say, is a basic unit within the natural system of earth. Another way to define a bioregion is in terms of watersheds. Bioregions must develop human populations that accord with their natural context.
8.5 Trans-Saharan Africa, Madagascar and Arabia. Neotropic: 19.0 7.3 South America, Central America, the Caribbean, South Florida and the Falkland Islands. Australasia: 7.6 2.9 Australia, Melanesia, New Zealand, Lesser Sunda Islands, Sulawesi, Maluku Islands and the neighbouring islands. The northern boundary of this zone is known as the ...
Ecoregions of North America, featuring the 50 United States, the District of Columbia and the five inhabited territories. The following is a list of United States ecoregions as identified by the World Wide Fund for Nature (WWF). The United States is a megadiverse country with a high level of endemism across a wide variety of ecosystems.