![7988](https://edit.jornada.nmsu.edu/uploads/large/es/pc/7988.jpg)
Thermic Ultramafic Foothills Extremely High Magnesium Content (Ca:Mg Ratio Less Than 0.5)
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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State 1
Reference State
![7988](https://edit.jornada.nmsu.edu/uploads/large/es/pc/7988.jpg)
![7988](https://edit.jornada.nmsu.edu/uploads/thumb/es/pc/7988.jpg)
![7989](https://edit.jornada.nmsu.edu/uploads/thumb/es/pc/7989.jpg)
![7990](https://edit.jornada.nmsu.edu/uploads/thumb/es/pc/7990.jpg)
![7995](https://edit.jornada.nmsu.edu/uploads/thumb/es/pc/7995.jpg)
Description
State 1 represents the historic range of variability for this ecological site. This ecological site may be one of the few examples in California where historic plant communities are still observable. Ultramafic soils often offer a refuge to many native endemic herbaceous species because its unique soil chemistry is not amenable to the vast majority of plant species. Most of the endemic plants are still intact, despite the introduction of a number of annual grasses and forbs arriving after the discovery of the New World.
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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.