Las Chinchillas Natural Reserve (equatorial-facing slopes, spring 1987)
Basic information
Sample name: Las Chinchillas Natural Reserve (equatorial-facing slopes, spring 1987)

Reference: J. E. Jiménez, P. Feinsinger, and F. M. Jaksic. 1992. Temporal patterns of an irruption and decline of small mammals in northcentral Chile. Journal of Mammalogy 73(2):356-364 [ER 2525]
Country: Chile

Coordinate: 31° 30' S, 71° 6' W
Basis of coordinate: stated in text
Geography comments: one site each in the El Grillo and El Cobre ravines, which are "2 km apart"
"Elevations range from 400 to 1, 700 m"
Climate and habitat
Habitat: desert/xeric shrubland
Protection: nature reserve
Substrate: ground surface
MAT: 16.0
MAP: 206.0
Habitat comments: "The climate is semi-arid, with sparse rainfall concentrated in austral winter months (June-August)... The vegetation is a thorn-srub"
MAP and MAT are for the Las Chinchillas Natural Reserve and is based on
Life forms: rodents, other small mammals
Sampling methods: quadrat, Sherman traps, Tomahawk traps
Sample size: 263
Years: 1987
Days: 15
Seasons: spring
Nets or traps: 196
Sampling comments: "Each 7 by 7 trapping grid had stations separated by 15 m, thus covering an area of 105 by 105 m (including a boundary strip of 7.5 m), or 1.1 ha. Grids were equipped with... one Sherman and one Tomahawk-like trap"
trapping was "for 5 consecutive nights" each month from September through NOvember
"traps were baited with rolled oats"
Chinchilla lanigera was entirey trapped with Tomahawks and all other rodents with Shermans
Sample: 2839
Contributor: John Alroy
Enterer: John Alroy
Created: 2017-12-01 21:38:44
Modified: 2017-12-01 21:40:20
Abundance distribution
8 species
1 singleton
total count 263
standardised richness: not computable
Fisher's α: 1.558
geometric series k: 0.4744
Hurlbert's PIE: 0.4824
Shannon's H: 1.0854
Good's u: 0.9962