GRAVELLY STREAMBANK A
Circle-spoke model
Scenario model
Current ecosystem state
Select a state
Management practices/drivers
Select a transition or restoration pathway
-
No transition or restoration pathway between the selected states has been described
Target ecosystem state
Select a state
Description
The reference state is representative of the natural range of variability under naturally stable, pre- European settlement conditions. The reference state has six community phases: herbaceous, shrub-herbaceous, sapling, immature forest (pole stage), mature forest and over mature forest. Community phases or seral stages are ecological responses to disturbance or absence from disturbance and are within the amplitude of natural variability of the reference state. The community phases of this state are dynamic in response to changes in weather patterns and disturbance regimes. Natural disturbances affecting this ecological site include flooding, drought, disease, insect attack and infrequent wildfire. Wildfire and flooding disturbances are important for stand maintenance. These disturbances prevent over-mature cottonwood stand and encourage seedling establishment and clonal reproduction. Sustaining an adequate level of ground water is important for maintaining the reference state. This ecological site is dependent on the availability of ground water, not annual precipitation for perpetuation of the stand.
Submodel
States 1, 5 and 6 (additional transitions)
1.1. Mature Forest
1.5. Immature Forest (pole stage)
1.6. Over-mature Forest
States 2, 5 and 6 (additional transitions)
1.2. Herbaceous
1.5. Immature Forest (pole stage)
1.6. Over-mature Forest
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.