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Level IV ecoregions (denoted by numbers and letters) are a further subdivision of Level III ecoregions (denoted by numbers alone). [ 2 ] [ 3 ] In general, Illinois transitions from the forests, to savannah , to tall grass prairie , and is now largely used for agriculture or urbanized, although in its far south are the forested highlands of the ...
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.
Pages in category "Ecoregions of Illinois" The following 4 pages are in this category, out of 4 total. This list may not reflect recent changes. *
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.
Conservation. Habitat loss. 67.6% [1] Protected. 2.09% [1] The central forest–grasslands transition is a prairie ecoregion of the central United States, an ecotone between eastern forests and the North American Great Plains. It is a classification defined by the World Wildlife Fund .
The highest temperature recorded in Illinois was 117 °F (47.2 °C), recorded on July 14, 1954, at East St. Louis, while the lowest temperature was −38 °F (−38.9 °C), recorded on January 31, 2019, at Mount Carroll. Illinois averages around 50 days of thunderstorm activity a year which put it somewhat above average for number of ...
Illinois state-owned protected areas include state parks, state forests, state recreation areas, state fish and wildlife areas, state natural areas, and one state trail. These areas are all administered by the Illinois Department of Natural Resources. In addition, dozens of state historic sites are administered by the Illinois Historic ...
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.