from Chapter II of Spatial Analysis of Ecological Factors Related to Grasshopper Population Dynamics in Wyoming
Fig. 11. Spatial distribution of rangeland grasshopper outbreaks during 1987-1988, when infestation area decreased by 95.8% from the previous year (dark shading = uninfested area; blue = area infested in 1987 only; yellow = area infested in 1988 only; green = area infested both years; black = state and county borders).
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