Natural Resources
Conservation Service
North Slope Loamy 16-22 PZ
Scenario model
Current ecosystem state
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Management practices/drivers
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- Transition T1A More details
- Transition T1B More details
- Transition T2A More details
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No transition or restoration pathway between the selected states has been described
Target ecosystem state
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Description
Reference Plant Community Phase. This plant community is dominated by Idaho fescue and bluebunch wheatgrass. Subdominant shrub species can include common snowberry and Woods’ rose. Woods’ rose and snowberry occur in patches on the site. Arrowleaf balsamroot, yarrow, geranium, cinquefoil, lupine, and oldmans whiskers are the dominant forbs. Natural fire frequency is 20-40 years.
Submodel
Description
This state is strongly dominated by Kentucky bluegrass. It is controlling the site. Some forbs such as common teasel, may be present. This state has developed due to improper grazing management. The site has crossed the threshold. Some soil loss may have occurred.
Submodel
Mechanism
State 1 Phase B to State 2. Develops through frequent fire and continued improper grazing management. The site has crossed the threshold. It is not economically feasible to move this state back towards State 1 with accelerating practices. State 1 Phase C to State 2. Develops through frequent fire or continued improper grazing management. The site has crossed the threshold. It is not economically feasible to move this state back towards State 1 with accelerating practices.
Mechanism
State 1 Phase B to State 3. Develops through continued improper grazing management. The site has crossed the threshold. It is not economically feasible to move this state back towards State 1 with accelerating practices.
Mechanism
State 2 to unknown site. Excessive soil loss and changes in the hydrologic cycle caused by continued improper grazing management and/or frequent fire cause this state to cross a threshold and retrogress to a new site with reduced potential. It is not economically feasible to move this state back towards State 1 with accelerating practices.
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.
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