Shallow Dense Clay
Circle-spoke model
Scenario model
Current ecosystem state
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Management practices/drivers
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No transition or restoration pathway between the selected states has been described
Target ecosystem state
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Description
This state represents what is believed to show the natural range of variability that dominated the dynamics in this ecological site prior to European settlement. This site, in Reference, is dominated by rhizomatous wheatgrass, and minor amounts of green needlegrass, sedges, forbs, and shrubs. Heavy grazing and/or drought will not significantly change the species composition but will cause a dramatic decrease in total annual production. Erosion of the surface horizon is also a likely outcome with heavy grazing. In pre-European times the primary disturbances included grazing by large ungulates, small mammals, and drought.
Submodel
Model keys
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Ecological sites
Major Land Resource Areas
The Ecosystem Dynamics Interpretive Tool is an information system framework developed by the USDA-ARS Jornada Experimental Range, USDA Natural Resources Conservation Service, and New Mexico State University.