Wyoming Grasshopper Population Dynamics Maps

from Chapter II of Spatial Analysis of Ecological Factors Related to Grasshopper Population Dynamics in Wyoming

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1944-96 Grasshopper Outbreak Frequency Map | 1944-49 Grasshopper Outbreak Frequency Map | 1950-59 Grasshopper Outbreak Frequency Map | 1960-69 Grasshopper Outbreak Frequency Map | 1970-79 Grasshopper Outbreak Frequency Map | 1980-89 Grasshopper Outbreak Frequency Map | 1990-96 Grasshopper Outbreak Frequency Map | Spatial distribution map for the years when less than 300,000 ha were infested | Spatial distribution for map the years when more than 1,000,000 ha were infested | Region definition map | Infestation collapse 1966-67 map | Infestation collapse 1968-69 map | Infestation collapse 1975-76 map | Infestation collapse 1987-88 map | Infestation collapse 1988-89 map | Infestation expansion 1962-63 map | Infestation expansion 1971-72 map | Infestation expansion 1973-74 map | Infestation expansion 1978-79 map | Infestation expansion 1986-87 map



Additional Fig. Spatial distribution of rangeland grasshopper outbreaks in Wyoming from 1950 to 1959 (white = no recorded infestations; light shading = 1-2 yr infested; dark shading = 3-4 yr infested; purple = 5 yr infested; blue-green = 6-7 yr infested; red = 8-9 yr infested; black = state and county borders).



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