This state represents the natural range of variability under pristine conditions. This state is dominated by singleleaf pinyon pine. Primary natural disturbance mechanisms affecting this ecological site are wildfire and periodic drought. Timing of fire combined with weather events determines plant community dynamics. This site may experience light to moderate grazing by wildlife. Pinyon-juniper habitat is generally arid and species are adapted to receiving limited annual precipitation. Overall, drought related mortality is low in this habitat type. Increased mortality following drought is likely caused by a combination of drought, insect attack and disease.
The Invaded State is characterized by a singleleaf pinyon pine forest with a trace of non-native annuals in the understory. State 2 is functionally similar to the reference state, however the presence of non-natives has reduced the ecological resilience of the site.
Submodel
2.1. Plant Community 2.1
2.2. Plant Communtiy 2.2
2.3. Plant Community 2.3
Model keys
Briefcase
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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.
) icon wherever it occurs. Drag and drop items to reorder. Cookies are used to store briefcase items between browsing sessions. Because of this, the number of items that can be added to your briefcase is limited, and briefcase items added on one device and browser cannot be accessed from another device or browser. Users who do not wish to place cookies on their devices should not use the briefcase tool. Briefcase cookies serve no other purpose than described here and are deleted whenever browsing history is cleared.
