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This research strongly suggest that sustained drought conditions across the Southwest will accelerate loss of grasses and some shrubs and increase the likelihood of dust production on disturbed soil surfaces in the future. However, the community of cyanobacteria, mosses and lichens that hold the soil together in many semiarid and arid environments-biological soil crusts-prevented wind erosion from occurring at most sites despite reductions in perennial vegetation. [Source: U.S. Geological Survey]
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