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]
Country: United States
State: Washington

Coordinate: 46° 30' N, 119° 40' W
Basis of coordinate: 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
Climate and habitat
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"
Life forms: rodents
Site area: 2.700
Sampling methods: quadrat, baited, Sherman traps
Sample size: 679
Years: 1967
Days: 44
Net or trap nights: 7210
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)
Sample: 1847
Contributor: John Alroy
Enterer: John Alroy
Created: 2015-12-20 16:16:40
Modified: 2015-12-20 16:16:40
Abundance distribution
4 species
1 singleton
total count 679
standardised richness: not computable
Fisher's α: 0.564
geometric series k: 0.1203
Hurlbert's PIE: 0.2663
Shannon's H: 0.4995
Good's u: 0.9985