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There are more lowland oaks in Ecoregion 73b than in Ecoregions 73a and 73d. The ecoregion covers 1,418 square miles (3,670 km 2) within Arkansas, Mississippi, and Tennessee, with 78% in Mississippi, and the remainder roughly split between the remaining two states. [2] Protected areas within the region include the Tallahatchie NWR in Mississippi.
Lake Marion; WWF freshwater ecoregions which overlap the Southeastern Plains are Temperate upland rivers – Tennessee (152); Temperate floodplain rivers and wetlands – Lower Mississippi (149), Mobile Bay (153), and Apalachicola (155); Temperate coastal rivers – West Florida Gulf (154), Appalachian Piedmont (157), and Chesapeake Bay (158 ...
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The North American Mississippi Valley Loess Plains are a Level III ecoregion designated by the Environmental Protection Agency (EPA) in six U.S. states. The region lies primarily on the eastern border of the Mississippi Alluvial Plain , from the Ohio River in western Kentucky, through Tennessee and Mississippi, to Louisiana.
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.
The Mississippi lowland forests are a temperate broadleaf and mixed forest ecoregion in the eastern United States, covering an area of 112,300 km 2 (43,400 sq mi). [ 2 ] Setting
Mississippi River-Gulf Outlet Canal The Mississippi River Alluvial Plain is an alluvial plain created by the Mississippi River on which lie parts of seven U.S. states , from southern Louisiana to southern Illinois (Illinois, Missouri, Kentucky, Tennessee, Arkansas, Mississippi, Louisiana).
Level III subdivides the continent into 182 ecoregions; of these, seven lay partly within Arkansas's borders. Level IV is a further subdivision of Level III ecoregions. There are 32 Level IV ecoregions in Arkansas, [2] many of which continue into adjacent areas in the neighboring states of Oklahoma, Mississippi, Missouri, Louisiana, Tennessee ...