Project ALE (1967)
Basic information
Sample name: Project ALE (1967)
Reference: T. P. O'Farrell, R. J. Olson, R. O. Gilbert, and J. D. Hedlund. 1975. A population of Great Basin pocket mice, Perognathus parvus, in the shrub-steppe of south-central Washington. Ecological Monographs 45(1):1-28 [ER 1642]
Geography
Country: United States
State: Washington
County: Benton
Coordinate: 47° 30' N, 120° 40' W
Latlng basis: stated in text
Geography comments: "on the U.S Atomic Energy Commission's Hanford Reservation... 2.4 km southeast of Rattlesnake Springs" and "approximately 16 km" from the Columbia River
Environment
Habitat: desert/xeric shrubland
Substrate: ground surface
MAT: 11.7
MAP: 159.0
Habitat comments: shrub-steppe covered with "Artemisia/Poa" i.e. "big sagebrush/Sandberg blue grass"
Methods
Life forms: rodents
Site area: 2.7
Sampling methods: quadrat, baited, Sherman traps
Sample size: 679 individuals
Years: 1967
Days: 44
Net or trap nights: 7210
Basal area status: not applicable
Sampling comments: "Sherman live-traps (8 X 9 X 30 cm) were arranged in a 20 X 20 grid of 400 sites with I0-m spacing... Each trap contained enough seeds to prevent torpor... we prebaited traps by placing a small quantity of peanut butter/oatmeal mixture in front of each closed trap" (ratio of 7210 "Trap/nights" to 44 "Number of sessions" doesn't square with trap count of 400)
Metadata
Sample no: 1847
Contributor no: John Alroy
Enterer: John Alroy
Created: 2015-12-20 16:16:40
Modified: 2015-12-20 05:16:40
Abundance distribution
Each square represents a species. Square sizes are proportional to counts. Values are logged.
Statistics
4 species
1 singleton
total count 679
geometric series index: 5.5
Fisher's α: 0.564
geometric series k: 0.29
Hurlbert's PIE: 0.2663
Shannon's H: 0.4995
Good's u: 0.9985
Register
| Perognathus parvus | 574 | 21.8 g |
| Peromyscus maniculatus | 90 | 19.1 g |
| Onychomys leucogaster | 14 | 34.7 g |
| Reithrodontomys megalotis | 1 | 10.3 g |