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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 ...
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
In the United States, the EPA and the United States Geological Survey (USGS) are the principal federal agencies working with the CEC to define and map ecoregions. Ecoregions may be identified by similarities in geology, physiography, vegetation, climate, soils, land use, wildlife distributions, and hydrology.
This is an accepted version of this page This is the latest accepted revision, reviewed on 25 January 2025. "Cities in Illinois" redirects here. For unincorporated communities, see List of unincorporated communities in Illinois. For CDPs, see List of census-designated places in Illinois. Map of the United States with Illinois highlighted Illinois is a state located in the Midwestern United ...
Print/export Download as PDF; Printable version; In other projects ... Pages in category "Ecoregions of Illinois" The following 4 pages are in this category, out of 4 ...
Terrestrial Ecoregions of the World (Olson et al. 2001, BioScience) WWF terrestrial ecoregions of the world One way of mapping the world into 18 terrestrial vegetation biomes, each containing one or more ecoregions EPA level III ecoregions in the contiguous United States. Alaska ecoregions (102-120) not shown.
The terrestrial scheme divides the Earth's land surface into 8 biogeographic realms, containing 867 smaller ecoregions. Each ecoregion is classified into one of 14 major habitat types, or biomes. In 2017 the WWF team revised ecosystem names and boundaries in the Arabian Peninsula, drier African regions, and Southeastern United States. [1]
Administrative divisions of Illinois; List of census-designated places in Illinois; List of cities in Illinois; List of Illinois townships; List of towns and villages in Illinois; List of counties in Illinois; List of precincts in Illinois