Overflow (Ov) 10-14” PZ
Scenario model
Current ecosystem state
Select a state
Management practices/drivers
Select a transition or restoration pathway
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Transition T1A
Introduction of non-native, invasive, sod-forming grasses such as smooth brome and Kentucky bluegrass
More details -
Transition T2A
Introduction of non-native grasses, noxious weeds, and other invasive plant species
More details -
No transition or restoration pathway between the selected states has been described
Target ecosystem state
Select a state
Description
The Reference State (1) evolved under the combined influences of climatic conditions, periodic fire activity, grazing by large herbivores, and impacts from small mammals and insects. The Reference State (1) is the plant community in which interpretations are primarily based and is used as a reference in order to understand the original potential of the site. The plant communities and various successional stages represent the natural range of variability. The Reference State (1) for this ecological site consists of 2 community phases.
Submodel
Description
The dynamics of the Sod-Bound State (2) are driven by long-term drought, improper grazing management such as continuous season-long or year-long grazing, or a combination of these factors. The Sod-Bound State (2) for this ecological site consists of 1 community phase.
Submodel
Description
The dynamics of the Increased Bare Ground State (3) are driven by long-term drought, improper grazing management, or a combination of these factors. The Increased Bare Ground State (3) for this ecological site consists of 1 community phase.
Submodel
Mechanism
The Reference State (1) transitions to the Sod-Bound State (2) when non-native, invasive, sod-forming grasses such as smooth brome and Kentucky bluegrass invade and dominate the plant community. Exotic plant species dominate the site in terms of cover and production and site resilience has been substantially reduced. In addition, other rangeland health attributes, such as reproductive capacity of native grasses and soil quality, have been substantially altered from the Reference State (1).
Mechanism
The Sod-Bound State (2) transitions to the Invaded State (3) when non-native grasses such as cheatgrass, noxious weeds, and other invasive plants invade the Sod-Bound State (2). Exotic plant species dominate the site in terms of cover and production. Site resilience has been substantially reduced.
Model keys
Briefcase
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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.