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

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

    Three level I areas were not subdivided for level 2. [2] Level III subdivides the continent into 182 smaller ecoregions; of these, 104 lie partly or wholly with the United States. [1] [3] Level IV is a further subdivision of Level III ecoregions. Level IV mapping is still underway but is complete across most of the United States.

  3. Category:Ecoregions of Nebraska - Wikipedia

    en.wikipedia.org/.../Category:Ecoregions_of_Nebraska

    Pages in category "Ecoregions of Nebraska" The following 5 pages are in this category, out of 5 total. This list may not reflect recent changes. C. Corn Belt; H.

  4. Western Corn Belt Plains - Wikipedia

    en.wikipedia.org/wiki/Western_Corn_Belt_Plains

    The Western Corn Belt Plains is a Level III ecoregion designated by the Environmental Protection Agency (EPA) in seven U.S. states, though predominantly in Iowa. It has been subdivided into fifteen Level IV ecoregions. [1] [2]

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

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

    "Level I" divides North America into 15 broad ecoregions. "Level II" subdivides the continent into 52 smaller ecoregions. "Level III" subdivides those regions again into 182 ecoregions. [1] [2] "Level IV" is a further subdivision of Level III ecoregions. Level IV mapping is still underway but is complete across most of the United States.

  6. 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 five 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.

  7. Central Great Plains (ecoregion) - Wikipedia

    en.wikipedia.org/wiki/Central_Great_Plains_(eco...

    It is a transition zone between the Central tall grasslands and Central forest-grasslands transition ecoregions to the east and the Western short grasslands to the west, while to the north lie the Northern mixed grasslands, which have a cooler temperature and a much shorter growing season. [2] The Edwards Plateau Savannas lie to the south.

  8. Category:Environment of Nebraska - Wikipedia

    en.wikipedia.org/wiki/Category:Environment_of...

    Ecoregions of Nebraska (5 P) Energy in Nebraska (2 C, 4 P) N. Natural history of Nebraska (9 C, 3 P) P. Protected areas of Nebraska (14 C, 17 P) S. Superfund sites in ...

  9. Category:Ecoregions of the United States - Wikipedia

    en.wikipedia.org/wiki/Category:Ecoregions_of_the...

    S. Sagebrush steppe; Sierra Madre Occidental pine–oak forests; Sierra Madre Oriental pine–oak forests; Snake River Plain (ecoregion) Snake–Columbia shrub steppe