This report traces the flow of California’s 2000 timber harvest through the wood-using industries; provides a description of the structure, operations, and condition of California’s primary forest products industry; and briefly summarizes timber inventory and growth. Historical wood products…
Keywords: Forest products, California, timber harvest, employment, bioenergy
Source: Gen. Tech. Rep. PNW-GTR-615. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 55 p
A multiple regression analysis of fire interval and resulting sediment yield (controlling for relief ratio, rainfall, etc.) indicates that reducing the fire interval from the current average 22 years to a prescribed fire interval of 5 years would reduce sediment yield by 2 million cubic meters in…
Keywords: California, erosion, forest fire, national forests, recreation, sediment
Source: Water Resources Research. 39(9), 1260
Findings from 30 outdoor recreation visitor contact studies that wereconducted in California between 1989 and 1998 are summarized. Analyses focuson recreationist profiles, patterns of participation, beliefs and opinions,communication patterns, and depreciative behaviors. Although the “typical”…
Keywords: adaptive management, cultural diversity, outdoor recreation, recreation management, recreation participation, California
Source: Gen. Tech. Rep. PSW-GTR-180. Albany, CA: Pacific Southwest Research Station, Forest Service, U. S. Department of Agriculture; 100 p.
The monoterpenes of about 16,000 xylem resin samples of pine (Pinus) speciesand hybrids—largely from the western United States—were analyzed in this long-term study of the resistance of pines to attack by bark beetles (Coleoptera:Scolytidae), with special emphasis on resistance to the western pine…
Keywords: Pinus species, pine grafts, bark beetles, western pine beetles, gas liquid chromatography, California
Source: Gen. Tech. Rep. PSW-GTR-177. Albany, CA: Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture; 454 p.
This watershed assessment of the Lake Tahoe basin in northern California and Nevada is the first attempt to collate, synthesize, and interpret available scientific information with a comprehensive view toward management and policy outcomes. The seven-chapter report presents new and existing…
Keywords: environmental history, air quality, water quality, biotic integrity, socioeconomics, adaptive management, California, Nevada
Source: Gen. Tech. Rep. PSW-GTR-175. Albany, CA: Pacific Southwest Research Station, Forest Service, US Department of Agriculture; 753 p
Organic matter in soil controls a variety of soil properties. A study in Humboldt County, California, evaluated changes in percentages of organic matter in soil as a function of time after timber harvest and soil depth in fir and redwood forests. To assess organic matter content, samples were taken…
Keywords: logging effects, organic soil materials, cutover forests, mixed-conifer forests, redwood forests, Humboldt County, California
Source: Res. Note PSW-RN-346. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station. 4 p
This paper summarizes data from 10 years of streamflow calibration and 4 years of recording effects of road construction and use.
Keywords: bridge building, road construction, logging operations, environmental impact, streamflow, sedimentation, fish habitat, Caspar Creek, California
Source: Research Paper PSW-93. Berkeley, CA: USDA Forest Service, Pacific Southwest Forest and Range Experiment Station. 10 p.
An estimation model for sediment discharge from a forested basin using Universal Soil Loss Equation and delivery ratio was developed. Study basins are North fork and South fork in Caspar Creek, north California, where Forest Service, USDA has been using water and sediment discharge from both…
Keywords: PSW4351, Caspar Creek, sediment, California, water
Source: EOS, Transactions, American Geophysical Union 81(48): F487.
Lack of information on the status of hardwoods, particularly oaks (Quercus sp.), is creating concern in California that continued fuelwood harvest will aggravate erosion and sedimentation (Pillsbury et al. 1983). This concern is unsupported by data from the West Coast because few data exist, a…
Keywords: PSW4351, erosion, sedimentation, fuelwood, hardwood, California
Source: Western Journal of Applied Forestry 4(1): 31-33.
Abstract - Suwallia sierra and Sweltsa pisteri are described as new species in the family Chloroperlidae from California, USA. Illustrations of the male terminalia of both species and the female and egg of S. sierra are presented. In addition, detailed figures of the epiproct of 2 similar species…
Keywords: PSW4351, Caspar Creek, stoneflies, Plecoptera, Suwallia, Sweltsa, Chloroperlidae, California
Source: Great Basin Naturalist 57(4): 343-347.