Grand Marais
Basic information
Sample name: Grand Marais

Reference: R. M. Timm. 1974. Rediscovery of the rock vole (Microtus chrotorrhinus) in Minnesota. Canadian Field-Naturalist 88:82 [ER 1672]
Country: United States
State: Minnesota

Coordinate: 48° 0' N, 90° 21' W
Basis of coordinate: stated in text
Geography comments: "17 mi N, 1 mi W Grand Marais, NW Va sec 29, T 64 N, R 1 E, elevation 1758 feet"
Climate and habitat
Habitat: temperate broadleaf/mixed forest
Substrate: ground surface
WMT: 15.8
CMT: -11.4
MAP: 622.0
Habitat comments: "in association with a long narrow bed of boulders deposited by the Rainey Lobe of Wisconsin glaciation" with surrounding vegetation including Abies, Picea, Thuja, Pinus, Populus, Betula, Acer, Rosa, and Vaccinium
climate data are for Isle Royale National Park and are from Scott and Binkley (1997, Oecologia)
Life forms: rodents, other small mammals
Sampling methods: no design, baited, snap traps
Sample size: 22
Years: 1973
Days: 3
Seasons: summer
Nets or traps: 167
Net or trap nights: 501
Sampling comments: "Museum Special snap-traps baited with a mixture of peanut butter and rolled oats... 167 traps" were "set in this area for 3 days"
Sample: 1860
Contributor: John Alroy
Enterer: John Alroy
Created: 2015-12-27 09:31:09
Modified: 2015-12-27 09:31:09
Abundance distribution
8 species
2 singletons
total count 22
standardised richness: 8.8
Fisher's α: 4.523
geometric series k: 0.7573
Hurlbert's PIE: 0.8095
Shannon's H: 1.8810
Good's u: 0.9205