Central Plains (Ecoregion 35)
Bottomlands and terraces are veneered with Quaternary alluvium or windblown silt deposits (loess). The lithologic mosaic is distinct from the Paleozoic rocks of Ecoregion 36 and the strictly Quaternary deposits of Ecoregion 73.
Potential natural vegetation is oak-hickory-pine forest on uplands and southern floodplain forest on bottomlands. Today, more than 75% of Ecoregion 35 remains wooded. Extensive commercial loblolly pine-shortleaf pine plantations occur. Lumber and pulpwood production, livestock grazing, and crawfish farming are major land uses. Cropland dominates the drained bottomlands of the Red River. Turbidity and total suspended solid concentrations are usually low except in the Red River.
Summer flow in many small streams is limited or non-existent but enduring pools may occur. Fish communities typically have a limited proportion of sensitive species; sunfishes are dominant, and darters and minnows are common.
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