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USDA Forest Service Research Paper PNW.

Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 48

Book Description

USDA Forest Service Research Paper PNW.

Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 48

Book Description

USDA Forest Service Research Paper PNW.

Author: Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 454

Book Description

U.S. Forest Service Research Paper PNW.

Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 12

Book Description

U.S.D.A. Forest Service Research Note PNW.

Author: Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 362

Book Description

U.S.D.A. Forest Service Research Note PNW.

Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 6

Book Description

Landscape Permeability for Large Carnivores in Washington

Author: Peter H. Singleton
Publisher:
ISBN:
Category : Carnivora
Languages : en
Pages : 100

Book Description
We conducted a regional-scale evaluation of landscape permeability for large carnivores in Washington and adjacent portions of British Columbia and Idaho. We developed geographic information system based landscape permeability models for wolves (Canis lupus), wolverine (Gulo gulo), lynx (Lynx canadensis), and grizzly bear (Ursus arctos). We also developed a general large carnivore model to provide a single generalization of the predominant landscape patterns for the four focal species. The models evaluated land cover type, road density, human population density, elevation, and slope to provide an estimate of landscape permeability. We identified five concentrations of large carnivore habitat between which we evaluated landscape permeability. The habitat concentration areas were the southern Cascade Range, the north-central Cascade Range, the Coast Range, the Kettle-Monashee Ranges, and the Selkirk-Columbia Mountains. We evaluated landscape permeability in fracture zones between these areas, including the I-90 Snoqualmie Pass area, the Fraser-Coquihalla area, the Okanogan Valley, and the upper Columbia and Pend Oreille River valleys. We identified the portions of the Washington state highway system that passed through habitat linkages between the habitat concentration areas and areas accessible to the focal species. This analysis provides a consistent measure of estimated landscape permeability across the analysis area, which can be used to develop conservation strategies, contribute to future field survey efforts, and help identify management priorities for the focal species.

The U.S. Forest Service in the Pacific Northwest

Author: Gerald W. Williams
Publisher:
ISBN:
Category : History
Languages : en
Pages : 438

Book Description
The Northwest has been at the forefront of forest management and research in the United States for more than one hundred years. In The U.S. Forest Service in the Pacific Northwest, Gerald Williams provides an historical overview of the part the Forest Service has played in managing the Northwest's forests. Emphasizing changes in management policy over the years, Williams discusses the establishment of the national forests in Oregon and Washington, grazing on public land, the Great Depression, World War II, and the rise of multiple-use management policies. He draws on extensive documentation of the post-war development boom to explore its effects on forests and Forest Service workers. Discussing such controversial issues as roadless areas and wilderness designation; timber harvesting; forest planning; ecosystems; and spotted owls, Williams demonstrates the impact of 1970s environmental laws on national forest management. The book is rich in photographs, many drawn from the Gerald W. Williams Collection, housed in University Archives at Oregon State University Libraries. Extensive appendices provide detailed data about Pacific Northwest forests. Chronicling a century of the agency's management of almost 25 million acres of national forests and grasslands for the people of the United States, The U.S. Forest Service in the Pacific Northwest is a welcome and overdue resource.