Molybdenum Ridge (time-lapse detections)
Basic information
Sample name: Molybdenum Ridge (time-lapse detections)

Sample aka: Moly Ridge

Reference: J. S. Dertien, C. F. Bagley, J. A. Haddix, A. R. Brinkman, E. S. Neipert, K. A. Jochum, and P. F. Doherty Jr. 2019. Spatiotemporal habitat use by a multitrophic alaska alpine mammal community. Canadian Journal of Zoology 97(8):713-723 [ER 3300]
Geography
Country: United States

State: Alaska

Coordinate: 63.82° N, -146.65° W
Latlng basis: estimated from map

Geography comments: "in Donnelly Training Area... of U.S. Army Fort Wainwright... on the northern foothills of the Alaska Range, approximately 50 km southwest of Delta Junction"
elevation 800 to 1900 m

Environment
Habitat: montane grassland

Protection: other protected area

Substrate: ground surface

Habitat comments: "At both locations we predominately sampled in alpine habitats"

Methods
Life forms: carnivores, rodents, ungulates, other small mammals

Sampling methods: no design, automatic cameras

Sample size: 665 captures or sightings

Years: 2013, 2014

Seasons: winter, spring, summer, autumn

Nets or traps: 27

Net or trap nights: 1920

Camera type: digital

Cameras paired: no

Trap spacing: 0.5

Basal area status: not applicable

Sampling comments: "We installed cameras during July and August 2013... cameras operated until October 2014... Camera locations were determined through a spatially balanced design generated via the Reversed Randomized Quadrant-Recursive Raster (RRQRR) algorithm... Sampling sites were > 500 meters apart except for two pairs of cameras, where one camera per pair was censored... We programmed camera traps to trigger by movement and to capture a time-lapse image every hour for the first 12-months of sampling. We increased the rate of time-lapse images to every 30 minutes for the last 3-months of sampling after noting the available space on the memory cards... our 54 cameras operated for 19, 199 camera trap days and captured ~825, 000 photos"
I presume there were 27 cameras per field area (9599.5 trap days each); the triggering period was 12/15 months, so there were 7679.6 triggered trap days and 1919.9 time-lapse trap days per field area"

Metadata
Sample no: 3675

Contributor no: John Alroy

Enterer: John Alroy

Created: 2020-10-20 17:01:43

Modified: 2020-10-20 06:01:43

Abundance distribution
Each square represents a species. Square sizes are proportional to counts. Values are logged.
Statistics
11 species
1 singleton
total count 665
geometric series index: 14.4
Fisher's α: 1.872
geometric series k: 0.6022
Hurlbert's PIE: 0.6664
Shannon's H: 1.3817
Good's u: 0.9985
Register
Ovis dalli dalli (Dall sheep)319
Rangifer tarandus (reindeer)19669.0 kg
Urocitellus parryii 75
Alces alces (moose)28421.0 kg
Ursus arctos (brown bear)3
Marmota caligata 10
Vulpes vulpes (red fox)4
Ochotona collaris 24
Canis lupus (gray wolf)243.0 kg
Gulo gulo (wolverine)113.0 kg
Mustelinae indet.3
"Mustela spp."