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]
Geography
Country: United States

State: New Mexico


Coordinate: 34° 20' N, 106° 50' W
Coordinate basis: 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

Environment
Habitat: desert/xeric shrubland

Protection: wildlife protected area

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

Methods
Life forms: orthopterans

Sites: 102

Site area: 0.051

Sampling methods: line transect,hand capture,visual

Sample size: 1378 individuals

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

Metadata
Sample number: 2139

Contributor: John Alroy

Enterer: John Alroy

Created: 2016-07-24 18:50:06

Modified: 2016-07-24 08:50:06

Abundance distribution
22 species
3 singletons
total count 1378
geometric series index: 29.1
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
Each square represents a species. Square sizes are proportional to counts.
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