Dry Sandy Bedrock Uplands
Scenario model
Current ecosystem state
Select a state
Management practices/drivers
Select a transition or restoration pathway
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Transition T1A
Clear cutting or stand-replacing fire.
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Restoration pathway R2A
Disturbance-free period 70+ years.
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Transition T2A
Grazing by livestock.
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Transition T2B
Clearing of woody vegetation; agricultural uses
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Restoration pathway T3A
Succession to woody species
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Transition T3A
Agricultural production
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Restoration pathway R4A
Cessation of agriculture and natural or artificial afforestation.
More details -
No transition or restoration pathway between the selected states has been described
Target ecosystem state
Select a state
Description
In absence of stand-leveling disturbances the Reference State oscillates between two easily definable community phases, a mature, or late successional, community phase and a rejuvenated community phase.
Submodel
Description
Post-logging state may consist of considerable diversity of pioneer and mid-successional community phases. The four communities in State 2 are commonly found under current conditions.
Submodel
Description
Site phase consists of various grasses and forbs impacted by livestock grazing.
Submodel
Mechanism
Clear cutting with initial control of competing vegetation, or stand-replacing fire, prepare the site for occupancy by shade intolerant species. This may occur through natural regeneration or by planting.
Mechanism
A period of some 70-100 years without major stand disturbance, especially fire, leads to decreased presence, through natural mortality, of early successional species and the dominance of relatively shade tolerant white pine and sub-canopy of red maple, returning the community to Reference State.
Mechanism
The site is transitioned to forage production and livestock grazing.
Mechanism
The site is cleared and utilized for agricultural production.
Mechanism
Grazing is removed from the site and tree regeneration is allowed.
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.