A state and transition model (STM) is a diagram that depicts our current understanding of the dynamics of an ecological site. They identify the different plant associations or “states” that may exist on a given ecological site and how other site characteristics, such as hydrology and soil stability, might change with them. STMs describe the environmental conditions, disturbances and management actions that cause vegetation to change from one group of plant species to a different set of species, and the management actions needed to restore plant communities to a desired composition.
Source: BLM
Hello Mounir.
The following papers give diagrams of state and transition models in drylands:
Bagchi S, Briske DD, Wu XB, McClaran MP, Bestelmeyer BT, Fernández-Giménez ME. 2011. Empirical assessment of state-and-transition models with a long-term vegetation record from the Sonoran Desert. Ecological Applications 22: 400-11
Holifield Collins CD, Stone JJ, Cratic Iii L. 2015. Runoff and sediment yield relationships with soil aggregate stability for a state-and-transition model in southeastern Arizona. Journal of Arid Environments 117: 96-103
Jauffret S, Lavorel S. 2003. Are Plant Functional Types Relevant to Describe Degradation in Arid, Southern Tunisian Steppes? Journal of Vegetation Science 14: 399-408
Perlinski AT, Paige GB, McClaran MP. 2014. Evaluating a State-and-Transition Model Using a Long-Term Dataset. Rangeland Ecology & Management 67: 173-82
Yours,
steve woods
Article Empirical assessment of state-and-transition models with a l...
Article Are plant functional types relevant to describe degradation ...
Article Evaluating a State-and-Transition Model Using a Long-Term Dataset
Article Runoff and sediment yield relationships with soil aggregate ...
Please refer to our article entitled “Effects of management and time on mechanisms of bush encroachment in southern Ethiopia”
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