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List of ecoregions in Illinois

February 15, 2024

The list of ecoregions in Illinois are lists of terrestrial ecoregions (see also, ecosystem) of the United States' State of Illinois, as defined separately by the United States Environmental Protection Agency (USEPA), and by the World Wildlife Fund. Illinois' ecology is in a land area of 56,400 square miles (146,000 km2); the state is 385 miles (620 km) long and 218 miles (351 km) wide and is located between latitude: 36.9540° to 42.4951° N, and longitude: 87.3840° to 91.4244° W,[1] with primarily a humid continental climate.

Illinois ecoregion map prepared by the USEPA

USEPA edit

The EPA ecoregion classification system has four levels, but only Levels I, III, and IV are shown on this list. Level I divides North America into 15 broad ecoregions (or biomes). Illinois is almost entirely within the Eastern Temperate Forest environment Level I region, although very small sections in its extreme west are in the Great Plains, Level I region. 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 Shawnee Hills and along its major rivers varying topography and biome occurs. Its larger ecoregion areas are 'corn belt' plains, known for rich, thick loess (in its north, center and east, particularly 54a) and the 'rivers and hills' region, which also has large till plains in Illinois' south (72j) and west (72i).[4]

Great Plains edit

  • 40 Central Irregular Plains (small section in the west)
    • 40a - Loess Flats and Till Plains
  • 47 Western Corn Belt Plains (small section in the west)
    • 47f - Rolling Loess Prairies

Eastern Temperate Forest edit

These forests stretch from eastern Texas and northern Florida to the Adirondacks and Wisconsin. For a general description of these forests, refer to Temperate Deciduous Forest. The standard reference is The Deciduous Forest of Eastern North America.[5]

World Wildlife Fund edit

See also edit

References edit

  1. ^ About Illinois Data and Statistics, retrieved 2013-02-10
  2. ^ "Ecological Regions of North America: Toward a Common Perspective". Commission for Environmental Cooperation. 1997. Retrieved 2013-02-07.
  3. ^ Plant Maps Interactive - Illinois Ecoregions (based on EPA data), retrieved 2013-02-10
  4. ^ "Ecoregion Maps and GIS Resources". United States Environmental Protection Agency. Retrieved 2013-02-07.
  5. ^ Braun, E. L. 1950. The Deciduous Forest of Eastern North America. New York: Hafner.

Further reading edit

  • Ricketts, Taylor H; Eric Dinerstein; David M. Olson; Colby J. Loucks; et al. (1999). Terrestrial Ecoregions of North America: a Conservation Assessment. Island Press; Washington, DC

External links edit

  • Illinois Ecoregions Report from the EPA

February 15, 2024
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The list of ecoregions in Illinois are lists of terrestrial ecoregions see also ecosystem of the United States State of Illinois as defined separately by the United States Environmental Protection Agency USEPA and by the World Wildlife Fund Illinois ecology is in a land area of 56 400 square miles 146 000 km2 the state is 385 miles 620 km long and 218 miles 351 km wide and is located between latitude 36 9540 to 42 4951 N and longitude 87 3840 to 91 4244 W 1 with primarily a humid continental climate Illinois ecoregion map prepared by the USEPA Contents 1 USEPA 1 1 Great Plains 1 2 Eastern Temperate Forest 2 World Wildlife Fund 3 See also 4 References 5 Further reading 6 External linksUSEPA editThe EPA ecoregion classification system has four levels but only Levels I III and IV are shown on this list Level I divides North America into 15 broad ecoregions or biomes Illinois is almost entirely within the Eastern Temperate Forest environment Level I region although very small sections in its extreme west are in the Great Plains Level I region 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 Shawnee Hills and along its major rivers varying topography and biome occurs Its larger ecoregion areas are corn belt plains known for rich thick loess in its north center and east particularly 54a and the rivers and hills region which also has large till plains in Illinois south 72j and west 72i 4 Great Plains edit 40 Central Irregular Plains small section in the west 40a Loess Flats and Till Plains 47 Western Corn Belt Plains small section in the west 47f Rolling Loess PrairiesEastern Temperate Forest edit These forests stretch from eastern Texas and northern Florida to the Adirondacks and Wisconsin For a general description of these forests refer to Temperate Deciduous Forest The standard reference is The Deciduous Forest of Eastern North America 5 52 Driftless Area far northwestern Illinois 52a Savanna Section 52b Paleozoic Plateau Coulee Section 53 Southeastern Wisconsin Till Plains northern Illinois 53a Rock River Drift Plain 53b Kettle Moraines 54 Central Corn Belt Plains northern and central Illinois 54a Illinois Indiana Prairies 54b Chicago Lake Plain 54c Kankakee Marsh 54d Sand Area 54e Chiwaukee Prairie Region 54f Valparaiso Wheaton Morainal Complex 54g Rock River Hills 71 Interior Plateau far southern Illinois 71a Crawford Mammoth Cave Uplands 71m Northern Shawnee Hills 71n Southern Shawnee Hills 72 Interior River Valleys and Hills along the State boundary rivers and into the interior along the Illinois River also the broad somewhat hillier southern and western till plains 72a Wabash Ohio Bottomlands 72b Glaciated Wabash Lowlands 72d Upper Mississippi Alluvial Plain 72e Middle Mississippi Alluvial Plain 72f River Hills 72g Southern Ozarkian River Bluffs 72i Western Dissected Illinoian Till Plain 72j Southern Illinoian Till Plain 72k Cretaceous Hills 72l Karstic Northern Ozarkian River Bluffs 72m Wabash River Bluffs and Low Hills 73 Mississippi Alluvial Plain extreme southern Illinois 73a Northern Holocene Meander Belts 73c St Francis LowlandsWorld Wildlife Fund editRealm Biome Ecoregion State LocationNearctic Temperate broadleaf and mixed forests Central U S hardwood forests Southern IllinoisNearctic Temperate broadleaf and mixed forests Mississippi lowland forests Far Southern IllinoisNearctic Temperate broadleaf and mixed forests Upper Midwest forest savanna transition Far Northern IllinoisNearctic Temperate grasslands savannas and shrublands Central forest grasslands transition Northern and Central IllinoisSee also editGeography of Illinois Climate of Illinois Geology of Illinois Fauna of Illinois Illinois Natural History Survey List of ecoregions in the United States EPA List of ecoregions in the United States WWF List of National Natural Landmarks in IllinoisReferences edit About Illinois Data and Statistics retrieved 2013 02 10 Ecological Regions of North America Toward a Common Perspective Commission for Environmental Cooperation 1997 Retrieved 2013 02 07 Plant Maps Interactive Illinois Ecoregions based on EPA data retrieved 2013 02 10 Ecoregion Maps and GIS Resources United States Environmental Protection Agency Retrieved 2013 02 07 Braun E L 1950 The Deciduous Forest of Eastern North America New York Hafner Further reading editRicketts Taylor H Eric Dinerstein David M Olson Colby J Loucks et al 1999 Terrestrial Ecoregions of North America a Conservation Assessment Island Press Washington DCExternal links editIllinois Ecoregions Report from the EPA Retrieved from https en wikipedia org w index php title List of ecoregions in Illinois amp oldid 1077514376, wikipedia, wiki, book, books, library,

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