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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.
Illinois_v17.eps; Date and time of digitizing: 04:29, 15 March 2007: Software used: Adobe Illustrator(R) X: File change date and time: 04:29, 15 March 2007: Conversion program: Acrobat Distiller 7.0.5 (Windows) Encrypted: no: Page size: 1386.53 x 2083.98 pts: Version of PDF format: 1.4
Ecoregions of the United States by state Subcategories. This category has the following 16 subcategories, out of 16 total. ... Ecoregions of Illinois (3 P ...
Ecoregions of Illinois (4 P) F. Forests of Illinois (2 C, 12 P) G. Grasslands of Illinois (12 P) H. Hiking trails in Illinois (2 C, 11 P)
Natural Landmarks in Illinois range from 53 to 6,500 acres (21.4 to 2,630.5 ha; 0.1 to 10.2 sq mi) in size. Owners include private individuals or organizations, and several county, state and federal agencies. [2] The National Natural Landmarks Program is administered by the National Park Service, a branch of the Department of the Interior. The ...