Arroyo, Hot Desert Shrub
Scenario model
Current ecosystem state
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Management practices/drivers
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Target ecosystem state
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State 1
Mixed Shrub-Grassland (Terrace)
Description
A diversity of mixed shrubs with mid and short grasses characterized this state. Natural disturbances are rainfall events with and wildlife grazing and browsing. Overgrazing by cattle will lead to shifts in grass composition.
Submodel
Description
This state consists of the arroyo channel (riverwash soil map unit component) that is usually without vegetation because of scouring flash floods. With time some areas of the channel can begin supporting riparian vegetation, however it can easily be washed away during the rainy season. It is not recommended to base stocking rate decisions based on this unstable plant community.
Submodel
Mechanism
A scouring flash flood can incise portions of the terrace and develop a dynamic arroyo channel.
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.