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WEATHER
Outer Bluegrass
Ecoregion
on
Cumberland Plateau
,
Appalachian Mountains
in
KY
,
IN
,
OH
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The Northern Bluegrass ecoregion is deeply dissected and has some ephemeral streams in the east. The east is unglaciated whereas the plains and hills of the west are mantled by leached pre-Wisconsinan till and discontinuous loess. Ecoregion 71d is underlain by Ordovician limestone and shale which distinguishes it from other nearby ecoregions. Its lower crestal elevations, Alfisol soils, limestone bedrock, and sinkholes distinguish it from Ecoregion 70d; its ruggedness, lack of fragipans, and, often, natural vegetation differentiate it from the glaciated plains of Ecoregion 55d. In addition, Ecoregion 71d lacks the high lime, Wisconsinan till of Ecoregion 55b. Originally, in Ohio, mixed mesophytic forests, mixed oak forests, and bottomland hardwood forests grew; in Indiana, western mixed mesophytic forests and oak-hickory forests grew and they lacked many northern species. Today, the ecoregion is a mosaic of forest and agriculture with urban-industrial activity occurring near Cincinnati and along the Ohio River. It is wooded where steep; general, dairy, and tobacco farming occurs on less rugged sites.
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EPA
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Classified As
Ecoregion
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