Pawnee National Grassland (off-colony)
Basic information
Sample name: Pawnee National Grassland (off-colony)

Reference: J. J. Kenney, J. K. Detling, and R. P. Reading. 2016. Influence of black-tailed prairie dogs (Cynomys ludovicianus) on short- horned grasshoppers (Orthoptera: Acrididae) on the shortgrass steppe of Colorado. Journal of Arid Environments 127:93-99 [ER 2157]
Country: United States
State: Colorado

Coordinate: 40° 45' N, 104° 41' W
Basis of coordinate: stated in text
Geography comments: "at five sites in the western half of the Pawnee National Grassland"
Climate and habitat
Habitat: temperate savanna
Protection: other protected area
Substrate: ground surface
Disturbance: grazing
MAP: 322.0
Habitat comments: "shortgrass steppe... with no known history of prairie dog occupation... All sites were open to grazing by cattle"
Life forms: orthopterans
Sites: 5
Sampling methods: no design, hoop nets
Sample size: 415
Years: 1997, 1998
Days: 8
Seasons: summer, autumn
Sampling comments: "Within each... site, we sampled within one 45 m 75 m plot... In 1997, we conducted abundance sampling 15-16 July, 4-5 August, 18-19 August and 13-14 September... In 1998, we collected samples at 4 week intervals from 16 June through 15 September... Within each plot, we sampled grasshopper abundance by counting the number of grasshoppers flushed from twenty 0.8 m2 hoops placed within a 4 x 5 hoop grid with 15 m between hoop centers"
counts do include nymphs
Sample: 2156
Contributor: John Alroy
Enterer: John Alroy
Created: 2016-07-28 12:32:50
Modified: 2018-06-30 21:02:58
Abundance distribution
18 species
1 singleton
total count 415
extrapolated richness: 21.4
Fisher's α: 3.835
geometric series k: 0.7641
Hurlbert's PIE: 0.8681
Shannon's H: 2.3006
Good's u: 0.9976
Each square represents a species. Square sizes are proportional to counts.