Sandstone Savanna
Scenario model
Current ecosystem state
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Management practices/drivers
Select a transition or restoration pathway
- Transition T1A More details
- Restoration pathway R2A 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
This state represents the most ecologically stable conditions in terms of resistance to erosion. Moreover, this state has the highest potential for productivity and plant diversity.
Submodel
Mechanism
Seed dispersal by livestock and wildlife and decreased fire frequency may facilitate the encroachment of juniper, cholla, and sacahuista. Variation in precipitation patterns such as a period of mild winters and above average precipitation may produce conditions favorable to the expansion of woody species initiating periods of increased recruitment and establishment. Additionally, decreased grass cover may aid the establishment of woody species by providing competition-free areas for seedling establishment.
Key indicators of approach to transition:
Decrease or change in distribution of grass cover.
Increase in amount of woody seedlings.
Mechanism
Brush control is necessary to reduce the canopy cover of woody species and maintain grass dominance. Periodic use of prescribed fire may be useful in reducing and maintaining shrub densities. Prescribed grazing will help ensure proper forage use following brush control.
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.