The Reference State contains two conceptual community phases. Community Phase 1.1 (CP 1.1) is dominated by greasewood and Indian ricegrass on stabilized dunes. Community Phase 1.2 (CP 1.2) has transitioned to unstable dune with more open interspaces between plants. The community phase transition is a disturbance to remove grasses or shrubs in CP 1.1, which could be from extreme drought or over use by livestock. The community phase transition back to CP 1.1 would be increased precipitation allowing plants to recolonize open dune areas.
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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.