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Central Plateau

Ecoregion on Ozark Plateau in AR, MO

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The Central Plateau is an undulating to hilly portion of the Salem Plateau that is dominated by agriculture. Ecoregion 39d is largely underlain by cherty Ordovician dolomite and limestone; it is lithologically distinct from another slightly dissected part of the Ozarks, the Springfield Plateau (39a). Karst features occur. The Central Plateau (39d) is less rugged and wooded than Ecoregions 38, 39b, and 39c. Natural vegetation is oak – hickory forest, oak – hickory – pine forest (often on soils derived from sandstone), barrens (on thin soils), and scattered cedar glades (on shallow, rocky, droughty soils from dolomite or limestone). Today, pastureland, hayland, and housing are common, but remnant forests and savannas occur in steeper areas. Turbidity, total suspended solids, total dissolved solids, and hardness values are often higher than in Ecoregions 39a and 39c.

— EPA

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