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Full-Text Articles in Physical Sciences and Mathematics

Integrated Restoration Strategies Towards Weed Control On Western Rangelands, U.S. Forest Service Jan 2006

Integrated Restoration Strategies Towards Weed Control On Western Rangelands, U.S. Forest Service

Wildlife Conservation and Management

An attempt to find native plant materials competitive with cheatgrass to help break the cheatgrass-fire cycle and begin the transition from exotic annual-dominated vegetation to native perennial dominated vegetation.


Conservation Assessment Of Greater Sage-Grouse And Sagebrush Habitats, Western Association Of Fish And Wildlife Agencies Jan 2004

Conservation Assessment Of Greater Sage-Grouse And Sagebrush Habitats, Western Association Of Fish And Wildlife Agencies

Wildlife Conservation and Management

An unbiased assessment from an ecological perspective of the current status and the potential factors that influenced the long-term conservation of greater sage-grouse populations and the sagebrush ecosystems on which they depend.


Jackson Hole Cooperative Elk Studies Group, Grand Teton National Park, 1995 Annual Report, United States Department Of The Interior, National Park Service Jan 1995

Jackson Hole Cooperative Elk Studies Group, Grand Teton National Park, 1995 Annual Report, United States Department Of The Interior, National Park Service

Wildlife Conservation and Management

A modelling effort using POP-II software was presented to show the effects of altering the harvest structure of the reduction. The relatively high harvests of the last two years may result in maintaining the current Park population levels. A variety of scenarios increasing the number and proportion of cows harvested show the greater effects cow harvests have on reducing the population relative to bull harvests.


Proceedings Of The Fourth Western Black Bear Workshop, United States Department Of The Interior, National Park Service Jun 1993

Proceedings Of The Fourth Western Black Bear Workshop, United States Department Of The Interior, National Park Service

Wildlife Conservation and Management

The status of black bears in North America ranges from pest to threatened. The species appears relatively secure throughout most parts of its range except the southeastern coastal plain; in this region a number of disjunct populations exist on primarily publicly owned lands. Concern over the status of Ursus americanus luteolus led to a petition to list this subspecies under the Endangered Species Act. The Endangered Species Act is arguably the most important wildlife legislation in recent years. However, applying this valuable, but young, untested, and evolving legislation to the black bear subspecies is judged unwarranted and premature because of …


Assessment Of Nongame Bird Habitat Using Forest Survey Data, United States Department Of Agriculture, Forest Service Jan 1990

Assessment Of Nongame Bird Habitat Using Forest Survey Data, United States Department Of Agriculture, Forest Service

Wildlife Conservation and Management

Forest Survey data have potential for use in obtaining information on the condition and diversity of the Nation's forest resources relevant to wildlife habitat that is needed for planning and monitoring at State and regional levels. In this study, Forest Survey data were used to assess nongame bird habitat potential based on food and shelter requirements on 24 plots. These assessments were then evaluated using bird numbers. Results of the analyses showed some correlation of bird numbers with tree canopy variables, and illustrate the potential for using Forest Survey data for wildlife habitat assessment, for identifying opportunities to improve habitat …


Sage Grouse Status And Recovery Plan For Strawberry Valley, Utah, United States Department Of Agriculture, Forest Service Jan 1990

Sage Grouse Status And Recovery Plan For Strawberry Valley, Utah, United States Department Of Agriculture, Forest Service

Wildlife Conservation and Management

Since 1939, an estimated 3,000 sage grouse in Strawberry Valley, UT, have declined to some 180 birds, mainly because of reservoir construction and eradication of big sagebrush to promote livestock forage. A 4-year study of numbers and movements of radio-tagged grouse has provided the basis for a recovery program calling for rejuvenation of big sagebrush and forbs important to grouse, replacement of mating grounds lost to human activities, consideration of sage grouse biology in management decisions, and formation of a sage grouse recovery team.


The Delphi Method: Application To Elk Habitat Quality, United States Department Of Agriculture, Forest Service Jan 1985

The Delphi Method: Application To Elk Habitat Quality, United States Department Of Agriculture, Forest Service

Wildlife Conservation and Management

This paper reports on the results of a study designed both to gather important information through Delphi and to evaluate several key features of the Delphi process. We intend to present information developed, and also describe and discuss Delphi so as to make resource managers more comfortable with it, aware of its potential, and willling to consider it along with other information gathering tools.