Las Vegas Valley
Basic information
Sample name: Las Vegas Valley
Reference: T. Garland Jr and W. G. Bradley. 1984. Effects of a highway on Mojave Desert rodent populations. American Midland Naturalist 111(1):47-56 [ER 1643]
Geography
Country: United States
State: Nevada
County: Clark
Coordinate: 36° 21' 27" N, 115° 20' 26" W
Latlng basis: stated in text
Geography comments: "in the Las Vegas Valley... R59E, T 18 S, Section 26... The trapping grid overlapped U.S. Highway 95... Elevation averaged 896 m"
Environment
Habitat: desert/xeric shrubland
Substrate: ground surface
MAT: 17.9
MAP: 160.0
Habitat comments: "a creosote bush (Larrea tridentata) community"
climate data are from Amundson et al. (1989, Geoderma) and are for a point at 840 m in the Las Vegas Valley
climate data are from Amundson et al. (1989, Geoderma) and are for a point at 840 m in the Las Vegas Valley
Methods
Life forms: rodents
Site area: 9.0
Sampling methods: quadrat, baited, Sherman traps
Sample size: 612 individuals
Days: 48
Nets or traps: 250
Net or trap nights: 12000
Basal area status: not applicable
Sampling comments: "A 9-ha, 250-station grid (25x10) was marked with wooden stakes placed at 20-m intervals. Rows were oriented parallel to the highway... Twelve trapping periods were conducted. One Sherman live trap (7.6x7.6x25.4 cm) baited with oats was placed at or within 1 m of each grid stake... Traps were checked the next 4 mornings"
Metadata
Sample no: 1848
Contributor no: John Alroy
Enterer: John Alroy
Created: 2015-12-20 16:30:12
Modified: 2015-12-20 05:30:12
Abundance distribution
Each square represents a species. Square sizes are proportional to counts. Values are logged.
Statistics
8 species
1 singleton
total count 612
geometric series index: 9.6
Fisher's α: 1.299
geometric series k: 0.5656
Hurlbert's PIE: 0.719
Shannon's H: 1.5002
Good's u: 0.9984
Register
| Chaetodipus formosus | 270 | 18.5 g |
| "Perognathus formosus" | ||
| Dipodomys merriami | 128 | 40.4 g |
| Ammospermophilus leucurus | 109 | 90.8 g |
| Xerospermophilus tereticaudus | 13 | 113.0 g |
| "Spermophilus tereticaudus" | ||
| Peromyscus eremicus | 45 | 20.9 g |
| Neotoma lepida | 41 | 117.0 g |
| Onychomys torridus | 5 | 24.7 g |
| Reithrodontomys megalotis | 1 | 10.3 g |