Treesearch

Public land managers in the United States are increasingly interested in managing forests to provide a range of ecological and social outputs in addition to timber. These outputs might include healthy riparian areas, connected blocks of late-successional forests, habitat for threatened and endangered species, and high quality recreational opportunities. On National Forests in the Inter-mountain West, millions of acres of densely stocked small-diameter stands create large, structurally uniform areas. These areas present opportunities to improve biological diversity and ecosystem health...

The commercial harvest of American matsutake (Tricholoma magnivelare) from forests in the Pacific Northwest has increased dramatically in the last decade. The similarity of this mushroom to the Japanese matsutake (T. matsutake) has prompted its harvest to meet increasing demands for matsutake in Japan. The American matsutake is likely to remain a sustainable forest product in North America if its harvest and forest habitats are managed appropriately. This summary paper begins by reviewing the historical importance of the Japanese matsutake, its declining production and harvest in Japan,...

The Evaluation of EIS Alternatives by the Science Integration Team describes the outcomes, interactions, effects, and consequences likely to result from implementing seven different management strategies on Forest Service (FS) and Bureau of Land Management (BLM) administered lands within the Interior Columbia Basin and portions of the Klamath and Great Basins. Two environmental impact statement teams developed seven alternative approaches to the management of forest, rangeland, aquatic, and watershed systems of FS- and BLM- administered lands. The alternatives varied from continuation of...

rends in genetic variation were examined over 51 progeny test sites throughout western Oregon. Narrow sense heritabilities for height and diameter showed an increasing trend to age 25, the oldest age examined. Before age 10, height heritabilities were relatively unstable. Type B site-site genetic correlations increased slowly with age for height and remained relatively stable for diameter. Age-age correlations by using the log of the age ratios (LAR). Optimum selection age was calculated for a 60-year rotation by using two measures of efficiency: gain per year and discounted gain. the...

Ten Adaptive Management Areas (AMAs) were created in compliance with the Northwest Forest Plan. Although the essence of adaptive management is to treat management as an experiment and to "learn how to learn," several barriers affect the successful implementation of AMAs. Four propositions are identified that address these potential barriers: (1) area boundaries must hold social meaning for stakeholders, (2) a focus on these 10 areas will highlight limitations in scientific knowledge, (3) management of the AMAs will highlight differences in how the world is perceived, and (4) effective...

This paper reviews and summarizes literature about smoke exposure and the resulting adverse health effects among wildland firefighters Many studies have been done on this problem between 1973 and 1995 Overall the data indicate that smoke exposure at wildfires and prescribed fires is usually no more than an inconvenience, but on occasion it approaches or exceeds legal and recommended occupational exposure limits Management action is necessary to bring all smoke exposures into compliance with occupational safety regulations.

Provides current information on lumber and plywood production and prices; employment in the forest industries: international trade in logs, lumber, and plywood: volume and average prices of stumpage sold by public agencies; and other related items. View an updated online version of this publication with downloadable excel files athttps://www.fs.usda.gov/pnw/ppet/.

This work describes the method used to generate a climate-change scenario for the Columbia River basin. The scenario considers climate patterns that may change if the atmospheric concentration of carbon dioxide (C02), or its greenhouse gas equivalent, were to double over pre-Industrial Revolution values. Given the current rate of increase in atmospheric C02 concentration, doubling could occur within the next 50 to 100 years. The Columbia River basin is in a transition climate zone between predominating maritime to the west, arctic to the north, and continental to the east. Consequently, it...

Provides current information on lumber and plywood production and prices; employment in the forest industries: international trade in logs, lumber, and plywood; volume and average prices of stumpage sold by public agencies: and other related items.

This paper reviews the wild mushroom resource of the Blue Mountains of northeastern Oregon and southeastern Washington and summarizes issues and concerns for regulation, monitoring, and management. Existing biological information on the major available commercial mushrooms in the area, with emphasis on morels, is presented. Brief descriptions of the most commonly collected mushrooms are given, as well as the site conditions and plant communities influencing their occurrence or proliferation.