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A map of the Amazon rainforest ecoregions. The yellow line encloses the ecoregions per the World Wide Fund for Nature. A map of the bioregions of Canada and the US. 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.
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, 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.
The region is known for low oxygen events and it contains extensive mud banks and a relatively wide continental shelf. It is a productive bioregion and supports major commercial fisheries. [4]: 102 In the 2011 assessment it was combined with the South-western Cape bioregion to form the Benguela ecoregion. [5] South-western Cape region
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.
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.
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.
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 ...