Cool Loamy Fan Remnants 5-7
Scenario model
Current ecosystem state
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No transition or restoration pathway between the selected states has been described
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Submodel
Description
The Representative State is characterized by the presence of non-native annuals in the understory. Plant communities in this state function very similarly to the reference state, however, ecological resilience may be reduced by the presence of the non-natives. Introduced annuals such as red brome, Mediterranean grass and redstem filaree have invaded the reference plant community and have become a component of the herbaceous cover. These non-native annuals are highly flammable and promote wildfires where fires historically have been infrequent. Mature shadscale persists after this invasion by non-native annuals, however shrubs seedling and desirable grasses suffer reduced vigor and limited reproductive capability due to increased competition from non-natives.
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 or changes in fire history. 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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