Wolverines of the North Cascades, 2014
Wolverine Research
The wolverine is among the rarest of the large carnivores in North America and probably least understood. SEEC produced this video to feature the collaborative, transboundary wolverine research of wildlife biologists in Washington State and and the Province of British Columbia.
DID YOU KNOW…
Diet
Wolverines eat a variety of food items. The larger animals they feed on tend to be carrion, that is, already dead when they discover them. These larger animals include elk, caribou, deer and mountain goats. Wolverines will also eat snowshoe hare, porcupines, marmots, mice, voles, birds, fish and vegetation.
Length: 82 – 130 cm | Weight: 6.5 – 16kg | Lifespan: 7-12 years
Population
Wolverines in the North Cascades of Washington State appear to be part of a larger population that reside in British Columbia and possibly Alberta. Wildlife biologists in in the U.S. collaborate with their counterparts in BC to study these populations as part of ongoing research related to transboundary species. This study area includes the North Cascades, Skagit and Similkameen watersheds.
This research involves setting live traps baited with road-killed mule deer, beaver or salmon carcasses and monitored electronically as well as visited regularly to ensure the traps are working properly. Captured wolverines are ear-tagged and fitted with radio-collars to provide general location and movement data. Approximately 1 dozen unique wolverines have been trapped, tagged and monitored over a 4 – 5 year period.
Range
For a graphic illustration of the extensive range of rough country the wolverine travels over, visit page 13 of this report by wolverinefoundation.org. The vast, uninterupted wild space a wolverine requires speak volumes to importance of protected habitat.
Reproduction
Mating season for wolverines is late spring to summer with an average of 1 – 2 kits being born the following winter, into spring. The kits are born white in color, in dens, burrowed deep into the snow in remote alpine locations usually at or just above the treeline.
What threatens wolverines?
The threats to wolverines are ultimately all human initiated.
Climate change affects the wolverines because the available deep snow in their southern habitat regions is slowly diminishing.
Encroachment of human activity disrupts denning wolverines. Outdoor enthusiasts are accessing wild places via snowmobile and backcountry skiing excursions.
As human infrastructure expands into more remote regions, available wolverine habitat becomes more fragmented. Connected corridors of protected lands are required to enable the wide ranging wolverine to travel between regional wolverine populations.
The recent wolverine work in BC is funded by the Habitat Conservation Trust Fund, the Skagit Environmental Endowment Commission, the BC Ministry of Environment and the BC Conservation Foundation.
For the latest information about wolverine research, connect with the following organizations.
Terrestrial Riparian Arthropod Investigations In The Big Beaver Creek Research Natural Area, 1995 - 1996 Part 4
Terrestrial Riparian Arthropod Investigations In The Big Beaver Creek Research Natural Area,
North Cascades National Park Service Complex, 1995-1996:
Part IV,
Hymenoptera: Formicidae
Reed S. Glesne
North Cascades National Park Service Complex
Terrestrial Riparian Arthropod Investigations In The Big Beaver Creek Research Natural Area, 1995 - 1996, Part 5
Terrestrial Riparian Arthropod Investigations In The Big Beaver Creek Research Natural Area, 1995 - 1996
Part V , Analysis of Arthropod Community
Characteristics and Habitat Associations
Reed S. Glesne
North Cascades National Park Service Complex
Greg Brenner
Pacific Analytics
James R. LaBonte
Oregon State Department o f Agriculture
Ross Lake Rainbow Trout Study - 1994
Alan C. Looff
Fisheries Management Division
Washington Department of Fish and Wildlife
Ross Lake Rainbow Trout Study - 1990-91 Appendix
Alan C. Looff
September 1991
Fisheries Management Division
Washington Department of Wildlife
Sumallo River Stocking Evaluation: Progress, 1989
Sumallo River Stocking Evaluation: Progress 1989
by Pat A. Slaney, Theresa I. Godin
Ministry of Environment, Fisheries Research and Development
Skagit River and Ross Reservoir Fisheries Management Plan, 1988
Skagit River and Ross Reservoir Fisheries Management Plan
by H. R. Neuman