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Edwards Plateau Woodland

Ecoregion on Edwards Plateau, Great Plains in TX

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The Edwards Plateau Woodland ecoregion contains the central part of the Edwards Plateau north of the highly dissected Balcones Canyonlands (30c). It encompasses the portion of the Edwards Plateau that receives sufficient rainfall to support woodland in contrast to the drier portion of the plateau to the west (30d) that has open juniper woodland and brush. The profile of the hills is rounded due to increased precipitation and chemical weathering. The dissection is moderate compared to the higher dissection of the Balcones Canyonlands (30c) to the south. Historically, the Edwards Plateau was a savanna of grasslands with scattered plateau live oak, Texas oak, Ashe juniper, and honey mesquite. With fire suppression and grazing, Ashe juniper and mesquite have spread, reducing the savanna character of the plateau. The grasslands of Ecoregion 30a are considered a southern extension of the mixed grass prairie, expressed as tallgrass or shortgrass dependent upon soil type, moisture availability, and grazing pressure. Grasses include little bluestem, Texas wintergrass, yellow Indiangrass, white tridens, Texas cupgrass, sideoats grama, seep muhly, and common curlymesquite.

— EPA

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