Sevilleta National Wildlife Refuge
Basic information
Sample name: Sevilleta National Wildlife Refuge

Reference: A. J. Rominger, T. E. X. Miller, and S. L. Collins. 2009. Relative contributions of neutral and niche-based processes to the structure of a desert grassland grasshopper community. Oecologia 161:791-800 [ER 2147]
Country: United States
State: New Mexico

Coordinate: 34° 20' N, 106° 50' W
Basis of coordinate: based on nearby landmark
Geography comments: "at the base of the Los Pinos Mountains" (coordinate based on Sevilleta National Wildlife Refuge)
elevation 1680 to 1820 m
Climate and habitat
Habitat: desert/xeric shrubland
Substrate: ground surface
MAT: 13.2
WMT: 25.4
CMT: 1.6
MAP: 250.0
Habitat comments: "at the interface of the Chihuahuan Desert and Great Plains biomes" and specifically "in an area of extensive desert grassland" with the dominant species being Bouteloua gracilis and B. eriopoda
Life forms: orthopterans
Sites: 102
Site area: 0.051
Sampling methods: line transect, hand capture, visual
Sample size: 1378
Sampling comments: data "were collected during July 2006 using 102 sampling points distributed across 25 km2... 62 points (hereafter 'elevation points') were arranged along three ~1-km transects (one transect numbered 22 points) at 50-m intervals across an elevation gradient from 1, 686 to 1, 822 m; and (2) 40 points (hereafter 'distance points') were randomly scattered across a 20-km2 area of desert grassland... Each sampling point consisted of a 1 5-m transect along which grasshoppers were Xushed by the observer using a pole to disturb vegetation... grasshoppers were identified by sight in the field... and only immediately unidentifiable individuals were collected"
text claims that 1509 individuals were counted but percentages clearly indicate that 1378 were
Sample: 2139
Contributor: John Alroy
Enterer: John Alroy
Created: 2016-07-24 18:50:06
Modified: 2016-07-24 18:50:06
Abundance distribution
22 species
3 singletons
total count 1378
Fisher's α: 3.717
geometric series k: 0.7483
Hurlbert's PIE: 0.7959
Shannon's H: 1.9650
Good's u: 0.9978