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Keyword: trends

Data from a 1972 visitor survey in the Desolation Wilderness to determine baseline visitor characteristics, and preferences for wilderness conditions and experience

Datasets Posted on: December 30, 2020
This package contains baseline data for visitor characteristics, activities and preferences collected as part of a 1972 survey of visitors to the Desolation Wilderness in the Sierra Nevada of northern California. Permit data and mailback surveys were used to provide the data from a systematic sample of visitors with the required use permit (permit holders).

Analysis of population monitoring data [Chapter 8]

Publications Posted on: October 02, 2020
Monitoring is a system for detecting trends over a period of time in areas such as habitat, water, and more. Herein we focus on animal populations and evaluate common quantitative methods for monitoring wildlife species. Animal distribution, abundance, survival, and productivity are examples of important biological parameters that can show trends based on ecosystem condition.

Regional demand and supply projections for outdoor recreation

Publications Posted on: June 22, 2020
This paper develops regional recreation supply and demand projections, by combining coefficients from the national 1989 RPA Assessment models with regional regressor values. Regional recreation opportunity estimates also are developed, based on regional travel behavior. Results show important regional variations in projections of recreation opportunities, trip supply, and trip demand.

Fish and other aquatic resource trends in the United States

Publications Posted on: August 01, 2018
This report documents the general trends in fisheries and aquatic resources for the nation as required by the Renewable Resources Planning Act (RPA) of 1974. The report highlights major trends in water quality, specific fish populations, resource utilization, and imperiled aquatic fauna. Relationships between land use, water quality, and aquatic species conditions are explored.

Wildlife resource trends in the United States: A technical document supporting the 2000 RPA Assessment

Publications Posted on: August 01, 2018
This report documents trends in wildlife resources for the nation as required by the Renewable Resources Planning Act (RPA) of 1974. The report focuses on recent historical trends in wildlife as one indicator of ecosystem health across the United States and updates wildlife trends presented in previous RPA Assessments.

Data from a 1990 visitor survey in the Desolation Wilderness to determine visitor trends, and preferences for wilderness conditions and experience

Datasets Posted on: March 15, 2018
This package contains trend, characteristic, activity and preference data collected as part of a 1990 survey of visitors to the Desolation Wilderness in the Sierra Nevada of northern California. Permit and mailback surveys were used to provide the data from a systematic sample of visitors with the required use permit (permit holders) and a sample of party members (group members without the permit).

Bob Marshall Wilderness Complex (BMWC) 1982 visitor characteristics, attitudes, and use patterns

Datasets Posted on: March 15, 2018
The data included in this publication include visitor characteristics, attitudes towards the wilderness experience, and use patterns for wilderness visitors to the Bob Marshall Wilderness Complex (BMWC) in 1982. Visitors were asked to provide contact information for a mail-back survey.

Bob Marshall Wilderness Complex (BMWC) 2004 visitor preference and usage data along with characteristics and attitudes towards Fire Management

Datasets Posted on: March 15, 2018
Research at the Bob Marshall Wilderness Complex (BMWC) in Montana explored differences in recreation visitors’ attitudes towards the use of management-ignited prescribed fires in the wilderness. This data publication contains the results of both on-site and mail-back surveys during the summer and fall of 2004.

Wilderness science in a time of change conference-Volume 1: Changing perspectives and future directions; 1999 May 23-27; Missoula, MT

Publications Posted on: May 12, 2016
Ten papers presented as plenary talks at the conference, "Wilderness Science in a Time of Change," are included.

Past and future freshwater use in the United States

Publications Posted on: May 12, 2016
Water use in the United States to the year 2040 is estimated by extending past trends in basic water-use determinants. Those trends are largely encouraging. Over the past 35 years, withdrawals in industry and at thermoelectric plants have steadily dropped per unit of output, and over the past 15 years some irrigated regions have also increased the efficiency of their water use. Further, per-capita domestic withdrawals may have finally peaked.

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