from Chapter II of Spatial Analysis of Ecological Factors Related to Grasshopper Population Dynamics in Wyoming
Fig. 7. Spatial distribution of rangeland grasshopper outbreaks for the years when more than 1 million ha were infested (white = no recorded infestations; light shading = 1-2 yr infested; dark shading = 3-4 yr infested; dark blue = 5 yr infested; blue-green = 6-7 yr infested; red = 8-9 yr infested; black = state and county borders).
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