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Yogo Creek above the American Saphire Mine
Yogo Creek (Mont.) -- Little Belt Mountains (Mont.)
Yogo Creek above the American Sapphire Mine, Little Belt Mountains. Plate 42a. Fire Group 6: Moist Douglas-fir. Elevation 5,600 ft (1,707 m) The camera faces northwest up Yogo Creek at a point on rock outcrop directly above the American Sapphire...
Archives and Special Collections Digital Photos

Why windspeeds increase on high mountain slopes at night .
Winds Speed. ; Weather - - Effect of mountains on.
Research findings support the contention that the well-documented increase of windspeed on high mountain slopes at night is due to the occurrence of a low-level jet wind. The report discusses various aspects of the meteorological situation most...
U.S. Forest Service Research Legacy Documents

Wildlife management implications of petroleum exploration and development in wildland environments
Wildlife conservation United States. ; Wildlife conservation -- United States. ; Petroleum engineering -- United States. ; Petroleum -- United States.
This report describes: (1) petroleum exploration, development, and production; (2) potential environmental disruptions; (3) effects of disruptions on wildlife behavior, habitat, and populations; and (4) strategies for minimizing and mitigating...
U.S. Forest Service Research Legacy Documents

National assessments of wildlife and fish : a technical framework .
Wildlife conservation - - United States. ; Fishery management - - United States.
A national assessment of wildlife and fish can be accomplished by completing three analytical components of the Forest and Rangeland Renewable Resources Planning Act: providing a statement of historical and current land, wildlife, and fish...
U.S. Forest Service Research Legacy Documents

The wilderness threats matrix: a framework for assessing imapcts
Wilderness areas -- United States.
A comprehensive framework for assessing threats to wilderness is described. The framework is represented as a matrix of potential threats and attributes of wilderness character. Cells in the matrix represent the impacts of threats on each...
U.S. Forest Service Research Legacy Documents

The Limits of Acceptable Change (LAC) system for wilderness planning
Wilderness areas -- United States -- Recreational use. ; Forests and forestry -- United States -- Multiple use. ; Wilderness areas -- United States -- Recreational use.
A wilderness management-by-objectives planning system is outlined. Through identification of standards, acceptable wilderness conditions are defined and appropriate management actions formulated. A case example is provided.
U.S. Forest Service Research Legacy Documents

Hikers and recreational stock users: predicting and managing recreation conflicts in three wildernesses
Wilderness areas -- United States -- Management. ; Hiking -- United States. ; Packhorse camping -- United States.
Visitors to National Forest wildernesses in California and Indiana and to a National Park Service wilderness in California were surveyed In 1990 and 1991 to study the conflict between hikers and recreational stock users. Hikers' values for...
U.S. Forest Service Research Legacy Documents

Visitor perception of wilderness recreation carrying capacity
Wilderness areas -- Recreational use. ; Wilderness area users.
Nearly 500 visitors to four wildernesses--The Bob Marshall in Montana, the Bridger in Wyoming, the High Uintas in Utah, and the Boundary Waters Canoe Area (BWCA) in Minnesota--completed a questionnaire designed to obtain data on four parameters of...
U.S. Forest Service Research Legacy Documents

Redistributing wilderness use through information supplied to visitors
Wilderness areas -- Montana -- Recreational use. ; Wilderness areas -- Montana -- Management.
An evaluation was made of an attempt by the managers of a portion of the Selway-Bitterroot Wilderness to influence visitors to redistribute themselves to more lightly used trailheads through an informational brochure. Use patterns did not change in...
U.S. Forest Service Research Legacy Documents

National wilderness preservation system database : key attributes and trends, 1964 through 1998 .
Wilderness areas - - United States. ; Wilderness areas - - Law and legislation - - United States.
The Wilderness Act of 1964 established a National Wilderness Preservation System, and this publication is a compilation of selected information about every wilderness within the System. For each wilderness, the following information is given:...
U.S. Forest Service Research Legacy Documents

Wildland planning glossary .
Wilderness areas - - United States - - Terminology.
More than 1400 terms useful in wildland and related resource planning are defined. The purpose of this work is to facilitate communication between professionals, not to provide them with exhaustive vocabularies of each other's specialties....
U.S. Forest Service Research Legacy Documents

A comparison of carrying capacity perceptions among visitors to two wildernesses .
Wilderness areas - - United States - - Recreational use. ; Wilderness areas - - California - - Recreational use. ; Wilderness areas - - Montana - - Recreational use. ; Wilderness area users - - California - -...
Visitors to two wildernesses -- the heavily-used Desolation Wilderness in California and the lightly-used Spanish Peaks Primitive Area in Montana -- were surveyed. Although visitors to both areas had common images of wilderness in a general sense,...
U.S. Forest Service Research Legacy Documents

Guidelines for evaluating air pollution impacts on wilderness within the Rocky Mountain region: report of a workshop, 1990 .
Wilderness areas - - Rocky Mountains - - Congresses. ; Air - - Pollution - - Standards - - Rocky Mountains - - Congresses. ; Trees - - Effect of pollution on - - Rocky Mountains - - Congresses.
This document is the product of an ongoing effort begun at a 4-day workshop sponsored by the Rocky Mountain Region of the USDA Forest Service, held in December 1990 in Estes Park, Colorado. Workshop participants gathered in groups to work on...
U.S. Forest Service Research Legacy Documents

Self-issued wilderness permits as a use measurement system
Wilderness area users. ; Wilderness areas -- Montana -- Spanish Peaks Primitive Area.
A self-issued, mandatory visitor permit system was evaluated as a use measurement system during its first year of operation in the Spanish Peaks Primitive Area, Montana. Overall, 53 percent of all visitor groups obtained permits. Length-of-stay was...
U.S. Forest Service Research Legacy Documents

Characteristics of visitors without permits compared to those with permits at the Desolation Wilderness, California:
Wilderness area users -- California. ; Desolation Wilderness (Calif.)
At the Desolation Wilderness a sample of visitors without the required use permit were asked to complete a short survey to allow them to be compared with visitors who had gotten permits. Previous resesirch suggested that those without permits...
U.S. Forest Service Research Legacy Documents

Wheat field near Glendive, Montana
Wheat farmers
A woman and a boy stand in a wheat field near Glendive, Montana. Caption on photo reads: "Dry farming wheat - 1911 crop. Rights res'd Foster."
Archives and Special Collections Digital Photos

Indexing western spruce budworm activity through radial increment analysis .
Western spruce budworm - - Montana.
Past western spruce budworm (WSBW) activity in western Montana Douglas-fir (Pseudotsuga menziesii [Mirb.] Franco) forests was assessed through radial increment analyses of cores extracted at diameter breast height. A growth function, defined as the...
U.S. Forest Service Research Legacy Documents

Influence of tree and site factors on western redcedar's response to release : a modeling analysis .
Western redcedar. ; Forests and forestry - - Measurement.
Western redcedar is one of the most important commercial species in the Northern Rocky Mountains. The species usually responds well to release, but the response often varies tremendously, depending on the site and tree characteristics. Therefore,...
U.S. Forest Service Research Legacy Documents

Threatened, endangered, and vulnerable species of terrestrial vertebrates in the Rocky Mountain Region.
Vertebrates - - Rocky Mountains Region. ; Endangered species - - Rocky Mountains Region.
This report describes the current status of 67 threatened, endangered, and vulnerable wildlife species in the Rocky Mountain Region. Known or potential reasons for population declines and species susceptibility are identified; and distributions,...
U.S. Forest Service Research Legacy Documents

Ground sample data for the conterminous U.S. land cover characteristics database .
Vegetation mapping - - United States. ; Land use - - United States.
Ground sample data were collected for a land cover database and raster map that portray 159 vegetation classes at 1 km² resolution for the conterminous United States. Location for 3,500 1 km² ground sample plots were selected randomly across the...
U.S. Forest Service Research Legacy Documents

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