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  2. List of ecoregions in the United States (EPA) - Wikipedia

    en.wikipedia.org/wiki/List_of_ecoregions_in_the...

    The Commission's 1997 report, Ecological Regions of North America, provides a framework that may be used by government agencies, non-governmental organizations, and academic researchers as a basis for risk analysis, resource management, and environmental study of the continent's ecosystems. [1]

  3. List of ecoregions in North America (CEC) - Wikipedia

    en.wikipedia.org/wiki/List_of_ecoregions_in...

    An example of a keystone species in the North American deserts would be the coyote or mountain lion. These two predators can control the population and distribution of a large number of prey species. A single mountain lion can roam an area of hundreds of kilometers, in which deer, rabbits, and bird species are partly controlled by a predator of ...

  4. Tundra of North America - Wikipedia

    en.wikipedia.org/wiki/Tundra_of_North_America

    Tundra of North America. The location of the tundra in North America is highlighted in light blue. The Tundra of North America is a Level I ecoregion of North America designated by the Commission for Environmental Cooperation (CEC) in its North American Environmental Atlas. One of the planet's most recent biomes, a result of the last ice age ...

  5. List of ecoregions in the United States (WWF) - Wikipedia

    en.wikipedia.org/wiki/List_of_ecoregions_in_the...

    Ecoregions of North America, featuring the 50 United States, the District of Columbia and the 5 inhabited territories. 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 with a high level of endemism across a wide variety of ecosystems.

  6. List of North American deserts - Wikipedia

    en.wikipedia.org/wiki/List_of_North_American_deserts

    Sonoran Desert. Baja Californian Desert. Chihuahuan Desert. (listed from north to south) Great Kobuk Sand Dunes three small deserts in northwestern Alaska, part of the Kobuk Valley National Park. Yukon - Carcross Desert, smallest desert in the world. Washington – British Columbia – Idaho – Wyoming – Oregon – Nevada.

  7. Watersheds of North America - Wikipedia

    en.wikipedia.org/wiki/Watersheds_of_North_America

    Watersheds of North America are large drainage basins which drain to separate oceans, seas, gulfs, or endorheic basins. There are six generally recognized hydrological continental divides which divide the continent into seven principal drainage basins spanning three oceans (Arctic, Atlantic and Pacific) and one endorheic basin.

  8. Tropical Wet Forests (US and Mexico) - Wikipedia

    en.wikipedia.org/wiki/Tropical_Wet_Forests_(US...

    Tropical Wet Forests (US and Mexico) Tropical Wet Forest canopy. The Tropical Wet Forests are a Level I ecoregion of North America designated by the Commission for Environmental Cooperation (CEC) in its North American Environmental Atlas. As the CEC consists only of Mexico, the United States, and Canada, the defined ecoregion does not extend ...

  9. Shortgrass prairie - Wikipedia

    en.wikipedia.org/wiki/Shortgrass_prairie

    The shortgrass prairie is an ecosystem located in the Great Plains of North America.The two most dominant grasses in the shortgrass prairie are blue grama (Bouteloua gracilis) and buffalograss (Bouteloua dactyloides), the two less dominant grasses in the prairie are greasegrass (Tridens flavus) and sideoats grama (Bouteloua curtipendula).