Upper Cryic Slopes
Scenario model
Current ecosystem state
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Management practices/drivers
Select a transition or restoration pathway
- Transition T1 More details
- Transition R2 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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Submodel
Mechanism
Transition to State 2 is triggered by a high mortality of white bark pine from white pine blister rust. White bark pine die slowly from white pine blister rust. The upper branches where cones are produced often succumb first; therefore regeneration is reduced long before the trees actually die. Trees weakened by white pine blister rust are more susceptible to mountain pine beetle infestations, and mortality may be high. Climate change may intensify this situation if precipitation and temperature increase. This transition may not be an immediate threat in this area, but whitebark pine has declined in much of its range due to a combination of white pine blister rust, mountain pine beetle infestations and fire suppression.
Mechanism
Restoration efforts need to be focused on re-introducing blister rust-resistant white bark pine. Seeds may need to be collected from other areas or from resistant trees nearby. Canopy openings will be needed to eliminate shade and competition from mountain hemlock.
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.