Pawnee National Grassland (on colony)
Basic information
Sample name: Pawnee National Grassland (on 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]
Geography
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
Substrate: ground surface
Disturbance: grazing
MAP: 322.0
Habitat comments: "shortgrass steppe... Each of our five study sites consisted of a prairie-dog colony that had been occupied for more than 5 years... All sites were open to grazing by cattle"
Methods
Life forms: orthopterans
Sites: 5
Sampling methods: no design, hoop nets
Sample size: 436
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
Metadata
Sample: 2155
Contributor: John Alroy
Enterer: John Alroy
Created: 2016-07-28 12:30:27
Modified: 2016-07-28 12:30:27
Abundance distribution
18 species
3 singletons
total count 436
Fisher's α: 3.785
geometric series k: 0.7568
Hurlbert's PIE: 0.8662
Shannon's H: 2.3178
Good's u: 0.9931
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