Name: Level IV Ecoregions

Display Field: US_L4NAME

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Description: Ecoregions denote areas of general similarity in ecosystems and in the type, quality, and quantity of environmental resources. They are designed to serve as a spatial framework for the research, assessment, management, and monitoring of ecosystems and ecosystem components. By recognizing the spatial differences in the capacities and potentials of ecosystems, ecoregions stratify the environment by its probable response to disturbance (Bryce and others, 1999). ecosystem management strategies across federal agencies, state agencies, and nongovernment organizations that are responsible for different types of resources in the same geographical areas (Omernik and others, 2000).

Copyright Text: DGI, USGS

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Spatial Reference: 102100  (3857)

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• Value: 69e Cumberland Mountain Thrust Block
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• Value: 70d Knobs-Lower Scioto Dissected Plateau
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• Value: 70f Ohio/Kentucky Carboniferous Plateau
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• Value: 71c Knobs-Norman Upland
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• Value: 71e Western Pennyroyal Karst Plain
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• Value: 71f Western Highland Rim
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• Value: 71g Eastern Highland Rim
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• Value: 71h Outer Nashville Basin
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