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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 ...
Wikipedia has articles relating to two separate ecoregion classification systems: Ecoregions defined by the Commission for Environmental Cooperation (CEC) ...
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This list of ecoregions in the United States provides an overview of United States ecoregions designated by the U.S. Environmental Protection Agency (EPA) ...
The following is a list of ecoregions in the United States as identified by the World Wide Fund for Nature (WWF). The United States is a megadiverse country ...
This list of ecoregions of North America provides an overview of North American ecoregions designated by the Commission for Environmental Cooperation (CEC) ...
An ecoregion (ecological region), sometimes called a bioregion, is the next smallest ecologically and geographically defined area beneath "realm" or ...
This is a list of terrestrial ecoregions as compiled by the World Wildlife Fund (WWF). The WWF identifies terrestrial, freshwater, and marine ecoregions.
Ecoregions are defined by the World Wide Fund for Nature as "relatively large units of land or water containing a distinct assemblage of natural communities ...
Lists of ecoregions by country · List of ecoregions in Oman · List of ecoregions in Qatar · List of ecoregions in Western Sahara · List of ecoregions in Yemen ...
List of freshwater ecoregions (WWF), 426 freshwater ecoregions.