Non-native annuals (including red brome, filaree, schisms and purslane) dominate understory (continuous, non-patchy distribution of non-native annuals). Shrubs and succulents may be absent if site has fire or brush management history.
Large shrubs and prickly pear may be absent or up to 30% canopy cover depending on fire and brush management history. Perennial grasses and forbs are absent. Annuals fluctuate with rainfall but are unable to establish in active soil movement areas.
Active soil erosion is evident by severe sheet, rill and gully erosion. Non-stony soil surfaces erode easily. Sites with stone and cobble cover are naturally more resistant to transitioning to this state but it can happen.
Submodel
5.1. Eroded Shrub-Succulent Community
5.2. Managed Erosion Community
Model keys
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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.