Sandy 19-26" 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 disturbance and natural regeneration over time, may be coupled with excessive grazing pressure
More details -
Restoration pathway R2A
Adequate rest from defoliation and removal of woody canopy, followed by reintroduction of historic disturbance regimes
More details -
Transition T2A
Absence of disturbance and natural regeneration over time, may be coupled with excessive grazing pressure
More details -
Restoration pathway R3B
Adequate rest from defoliation and removal of woody canopy, followed by reintroduction of historic disturbance regimes
More details -
Restoration pathway R3A
Adequate rest from defoliation, removal of woody canopy, reintroduction of fire
More details -
No transition or restoration pathway between the selected states has been described
Target ecosystem state
Select a state
State 1
Grassland/Oak State
Description
The Tall/Midgrass/Oak Community is a tallgrass dominated community such as little bluestem with scattered Havard oak throughout. Some large oak motts are present. A good perennial forb component is present although somewhat overshadowed by the grasses. Major grass species found in this community are little bluestem and lesser amounts of sand bluestem.
The Oak/Tallgrass Complex community has some tall and midgrasses remaining with sand shinoak increasing dramatically from the reference community. Midgrasses have increased along with annual forbs. The oak now makes up well over half the total production for the site. There is sufficient seed source and existing tallgrass plants remaining for good recovery if the competition from the oak is reduced.
Submodel
Description
The Oak Dominant Grassland Community is totally dominated by shinoak with significant sand sagebrush. Some tallgrasses remain. Grasses such as perennial threeawn, fringed signalgrass, red lovegrass and dropseeds have increased. Desirable forbs have been replaced by ragweed, and annuals.
Submodel
Description
This community is totally dominated by Havard oak. No other plants are able to express themselves. Very few if any tallgrasses can be found. A few short and midgrasses are present. Some annuals forbs are present where the cover is not quite as heavy. Oak is about 80% of the total community.
Submodel
Mechanism
With Heavy Continuous Grazing, no fires, and Brush Invasion, the Grassland/Oak State will transition into the Oak/Grassland State.
Mechanism
With Prescribed Grazing, Brush Management, and Prescribed Burning conservation practices, the Oak/Grassland State can be restored into the Grassland/Oak State.
Relevant conservation practices
| Practice | External resources |
|---|---|
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Brush Management |
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Prescribed Burning |
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Prescribed Grazing |
Mechanism
With Heavy Continuous Grazing, no fires, No Brush Management, and Brush Invasion, the Oak/Grassland State will transition into the Oak Woodland State.
Mechanism
With the implementation of various conservation practices including Reclamation, Prescribed Grazing, Brush Management, and Prescribed Burning, the Oak Woodland State can be restored back to the Grassland/Oak State.
Relevant conservation practices
| Practice | External resources |
|---|---|
|
Brush Management |
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Prescribed Burning |
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Prescribed Grazing |
Mechanism
With the implementation of various conservation practices including Prescribed Grazing, Brush Management, and Prescribed Burning, the Oak Woodland State can be restored back to the Oak/Grassland State.
Relevant conservation practices
| Practice | External resources |
|---|---|
|
Brush Management |
|
|
Prescribed Burning |
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|
Prescribed Grazing |
Model keys
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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.