De Long Mountains (riparian grass-willow)
Basic information
Sample name: De Long Mountains (riparian grass-willow)
Reference: R. J. Douglass. 1984. Ecological distribution of small mammals in the De Long Mountains of northwestern Alaska. Arctic 37(2):148-154 [ER 1588]
Geography
Country: United States
State: Alaska
Coordinate: 68° 7' N, 164° 30' W
Latlng basis: stated in text
Geography comments: "160 km north of Kotzebue... approximately 58 km inland from the Chukchi Sea"
Environment
Habitat: boreal forest/taiga
Substrate: ground surface
WMT: 20.0
CMT: -47.0
MAP: 300.0
Habitat comments: "dominated by cottongrass (Eriophorum sp.) and other sedges (Carex spp.), dwarf birches (Betula spp.), and willows (Salix spp.). Tall stands of riparian willows occur along most drainages"
climate data are for the Asik watershed within the Noatak National Preserve and are from Stottlemyer et al. (2000, USGS Prof Paper 1662)
climate data are for the Asik watershed within the Noatak National Preserve and are from Stottlemyer et al. (2000, USGS Prof Paper 1662)
Methods
Life forms: rodents, other small mammals
Site area: 0.76
Sampling methods: quadrat, baited, Sherman traps
Sample size: 96 individuals
Years: 1978, 1979
Days: 18
Nets or traps: 100
Net or trap nights: 1800
Basal area status: not applicable
Sampling comments: "100 stations of one trap each... Grids were four columns wide by 25 columns long and encompassed areas of 0.76 ha... Columns on all grids were 15 m apart and rows were 7 m apart. Grids were sampled for three consecutive days each during June, July, and August 1978 and 1979. Sherman live-traps (23 x 8 x 9 cm) were covered with plywood, baited with rolled oats and peanut butter, and checked once daily""
Metadata
Sample no: 1817
Contributor no: John Alroy
Enterer: John Alroy
Created: 2015-12-11 12:53:24
Modified: 2015-12-11 01:54:08
Abundance distribution
Each square represents a species. Square sizes are proportional to counts. Values are logged.
Statistics
7 species
1 singleton
total count 96
geometric series index: 9.2
Fisher's α: 1.737
geometric series k: 0.7188
Hurlbert's PIE: 0.759
Shannon's H: 1.5852
Good's u: 0.9896
Register
| Myodes rutilus | 29 | |
| "Clethrionomys rutilus" | ||
| Alexandromys oeconomus | 22 | |
| "Microtus oeconomus" | ||
| Lemmus trimucronatus | 1 | 43.7 g |
| Stenocranius gregalis | 6 | |
| "Microtus gregalis" | ||
| Sorex cinereus | 4 | 4.1 g |
| Sorex arcticus | 6 | 8.1 g |
| Sorex vagrans | 28 | 5.3 g |