![6713](https://edit.jornada.nmsu.edu/uploads/large/es/pc/6713.jpg)
Steep Rocky 29-35 PZ
Scenario model
Current ecosystem state
Select a state
Management practices/drivers
Select a transition or restoration pathway
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Transition T1A
Absence of wildfire and natural regeneration overtime. Maybe be coupled with prolonged excessive grazing.
More details -
Transition T1B
Absence of wildfire coupled with prolonged excessive grazing pressure
More details -
Restoration pathway R2A
Reintroduction of disturbance
More details -
No transition or restoration pathway between the selected states has been described
Target ecosystem state
Select a state
State 1
Reference
![6713](https://edit.jornada.nmsu.edu/uploads/large/es/pc/6713.jpg)
![6713](https://edit.jornada.nmsu.edu/uploads/thumb/es/pc/6713.jpg)
![6714](https://edit.jornada.nmsu.edu/uploads/thumb/es/pc/6714.jpg)
Description
The reference state is considered to be representative of the range of variability under pre-Euro settlement conditions. This state is characterized by a mixture of woody species with an understory of midgrasses and forbs. Community phase changes are primarily driven by wildfire and climatic fluctuations.
Submodel
State 2
Juniper/Oak Woodland State
![6715](https://edit.jornada.nmsu.edu/uploads/large/es/pc/6715.jpg)
![6715](https://edit.jornada.nmsu.edu/uploads/thumb/es/pc/6715.jpg)
![6716](https://edit.jornada.nmsu.edu/uploads/thumb/es/pc/6716.jpg)
![6717](https://edit.jornada.nmsu.edu/uploads/thumb/es/pc/6717.jpg)
Submodel
Mechanism
Transition 1A is a scenario with some combination of no fire, heavy browsing by livestock and wildlife, no brush management, and the unmitigated increase of juniper. Wildlife contributes to the spread of seeds through droppings.
Mechanism
This transition is caused by interruption of sunlight energy flowing through the system to only the overstory plants. The hydrologic cycle is severely impeded and the loss of top soil is a degradation of the mineral cycle.
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.