Figure 5
Mix of community phases resulting from varying the probability of drought, fire, and insect outbreaks for the (a) Warm-Moist, (b) Cool-Moist, (c) Warm-Dry, (d) and Shallow-Dry sagebrush groups. Varying the probability of drought had no observable effect on the two moist groups and only a minor effect on the two dry groups. Varying the probability of fire had a large effect on all four groups. Varying the probability of an impact when an insect outbreak occurs had a greater effect on the two dry groups than on the two moist groups with the least effect on the Warm-Moist Sagebrush Group.