Treesearch

Current techniques for rehabilitating and enhancing habitat to increase natural production of anadromous salmonids in the Pacific Northwest and Alaska are described. Methods to enhance spawning, rearing, and riparian habitat, and to improve access are reviewed. The information was compiled from published literature, unpublished reports by State and Federal agencies, and personal communications, including visits with project personnel. Protection of habitat is the best investment for sustaining anadromous salmonid production, but rehabilitation and enhancement projects in the Pacific...

Relationships of mule deer behavior and physiology to management of shrub steppe plant communities in the Great Basin of southeastern Oregon are presented for application in land-use planning and habitat management. Communities are considered as they are used by mule deer for thermal cover, hiding cover, forage, fawning, and fawn rearing.

Changes in depth to permafrost and soil temperature were investigated for 4 years after treatment of the forest floor on small plots by fire and mechanical removal of half the forest floor layer and the entire layer. The only treatments to show a consistent, statistically significant effect were the mechanical removals. Fire treatments usually did not have a statistically significant effect on depth to permafrost and soil temperature in summer; fire consumed only small amounts of the forest floor because of wet conditions at the time of burning. Treated plots showed an almost constant drop...

This report summarizes a 1979 timber resource inventory of eight counties in the Puget Sound area of Washington: Island, King, Kitsap, Pierce, San Juan, Skagit, Snohomish, and Whatcom. Detailed tables of forest area, timber volume, growth, mortality, and harvest are presented.

A pilot study investigated the impact of two harvesting intensities on duff consumption from prescribed fire. Two units of old-growth Douglas-fir and western hemlock served as the sample. The units, located in the Willamette National Forest, were harvested in 1980 and burned in 1981. Duff consumption was 36 percent less on the unit logged to the closer specification of 6 inches by 6 feet than on the unit logged to the standard specification of 8 inches by 10 feet. Application of previously developed models for duff consumption was demonstrated.

Information about the biology, diseases, and management of Port-Orford- cedar was collected from the literature, from unpublished research data of the authors and the USDA Forest Service, conversations with personnel involved in all facets of Port-Orford-cedar management, and visits to stands throughout the range of the species. Information is summarized and presented regarding species characteristics, distribution, environment, vegetation, autecology, usage, past management, and the biology and effects of the most important pathogen. Recommendations for managing the species in the...

Recent legislation (PL. 93-452; P.L. 94-588) has emphasized improvement of fish and wildlife habitat on lands of the National Forest System. A sequential procedure has been developed for screening potential projects to identify those producing the greatest fishery benefits. The procedure—which includes program planning, project planning, and intensive benefit/cost analysis—has nationwide application for both fish and wildlife projects. Fisheries and wildlife values are difficult to assess and available estimates are far from ideal, but better estimates are gradually becoming available.

Descriptions and color photographs of important fungal sporophores (conks), other indicators of cull (wounds), and associated decays in western Oregon conifers are provided to aid timber markers, cruisers, and scalers in identifying them. Cull factors are given for the indicators by tree species.

During a 19-year period after a 110-year-old Douglas-fir stand was thinned, both standard plot compilations and stem analysis showed that growth of heavily and lightly thinned stands equaled growth of stands in control plots.

Total aboveground woody biomass of trees on forest land that can produce 1.4 cubic m eters per hectare per year of industrial wood in Alaska is 1.33 billion metric tons green weight. The estimated energy value of the standing woody biomass is 11.9 x 10'5 Btu's. Statewide tables of biomass and energy values for softwoods, hardwoods, and species groups are presented.