Vegetation and Wildlife Findings for Three Ecological Reserves in the Skagit River Valley, 1993

Vegetation and Wildlife Findings for Three Ecological Reserves in the Skagit River Valley, 1993

Data collected by: Scott Barrett, Roland Schoen and Krista Schilberg
Report written by: Krista Schilberg and Scott Barrett

Ecologica l reserves are areas of land which have been protected from consumptive resource use under the Ecologica l Reserves Act.


ROSS LAKE RAINBOW TROUT STUDY 1992-93 DATA APPENDIX

ROSS LAKE RAINBOW TROUT STUDY 1992-93 DATA APPENDIX

by Alan C. Looff, 1993


Terrestrial Riparian Arthropod Investigations In The Big Beaver Creek Area, 1995-1996, Part 1

Terrestrial Riparian Arthropod Investigations In The Big Beaver Creek Area, 1995-1996, Part 1

John D. Lattin, Systematic Entomology Laboratory, Department of Entomology, Oregon State University

This report represents one of a series of five technical reports on our efforts to document arthropod occurrence,
abundance, and habitat associations in the Big Beaver Creek Research Natural Area of North Cascades National
Park Complex (NOCA), located in northwestern Washington. The first four reports document occurrence, life
history information, and information concerning taxonomy of species from four major arthropod groups including
the Heteroptera (Hemiptera), Coleoptera, Arachnida (Araneae), and Hymenoptera (Formicidae).


Reconstruction of climate and ecology of Skagit Valley, Washington, from 27.7 to 19.8 ka based on plant and beetle macrofossils, 2021

Reconstruction of climate and ecology of Skagit Valley, Washington, from 27.7 to 19.8 ka based on plant and beetle macrofossils, 2021

by Jon L. Riedel , Alice Telkab, Andy Bunnc and John J. Clagued

Glacial lake sediments exposed at two sites in Skagit Valley, Washington, encase abundant macrofossils dating from 27.7 to 19.8 cal ka BP. At
the last glacial maximum (LGM) most of the valley floor was part of a regionally extensive arid boreal (subalpine) forest that periodically
included montane and temperate trees and open boreal species such as dwarf birch, northern spikemoss, and heath.


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.

The Wolverine Foundation     Conservation NW


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


A Floristic Survey of Big Beaver Valley, 1987

A Floristic Survey of Big Beaver Valley, 1987

by Ronald Vanbianchi and Steven J Wagstaff

This report describes the vascular plant flora of Big Beaver Valley, located
in the North Cascade Mountain Range of Washington State. Portions of the
valley lie within both North Cascades National Park and North Cascades
National Recreation Area. Plant communities are mapped, and species'
distributions described. Ten species are reported for the first time from
the North Cascades, and new populations of three Sensitive plant species are
recorded.