Shallow Granitic Hill
Scenario model
Current ecosystem state
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Management practices/drivers
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- Transition T1 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
Monospecific blackbrush stands often exist with few other species scattered throughout the stand and under blackbrush canopies. Blackbrush as a climax species is supported by West (1969), Provenza and Urness (1981) and Jeffries and Klopatek (1987) but solid stands may have developed as livestock grazing removed more palatable grasses and shrubs (Bowns and West 1976b, Plummer et. al 1968).
Submodel
Description
This state exists when blackbrush is lost from the community as a result of large-scale and high intensity fires, where blackbrush seed source is not available to recolonize, and/or recurrent fire does not provide intervals long enough for blackbrush recovery.
Submodel
Mechanism
Introduction of non-native species due to a combination of factors including; surface disturbance, changes in the kinds of animals and their grazing patterns, drought, changes in fire history or any other type of vegetation removal. Non-natives can alter disturbance regimes significantly from their natural or historic range and change ecological processes therefore creating an unlikely scenario to restore the site back to reference.
Model keys
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Ecological sites
Major Land Resource Areas
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