from Chapter III of Spatial Analysis of Ecological Factors Related to Grasshopper Population Dynamics in Wyoming
Vegetation Map | Precipitation Map | Elevation Map | Evapotranspiration Map | Soil Map
Fig. 5. Mean annual potential evapotranspiration map of Wyoming, map adapted from
Marston (1990). Dark blue = <43 cm; blue = 43-48 cm; olive drab = 48-53 cm; peach
= 53-58 cm; tan shading = 58-63 cm; brown = >63 cm; black = state and county borders.
Fig. 1 (Updated from the 1960-93 map) Spatial distribution of rangeland grasshopper
outbreaks in Wyoming from 1944 to 1994, with no data for 1982, 1983 or 1984 (Schell
1994). 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; orange =10-11 yr infested; yellow = 12-21 yr infested; black = state
and county borders.
