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3,707 results found
Pityogenes chalcographus is one of the major pests in Eurasian spruce stands. Crossing experiments performed in the mid-1970s suggested race differentiation, and mtDNA analysis of P. chalcographus gave evidence that today’s populations are divided into several clades. The genetic distance between…
Author(s): Wolfgang Arthofer, Dimitrios N. Avtzis, Markus Riegler, Wolfgang J. Miller, Christian Stauffer
Keywords: mitochondrial markers, mtDNA, scolytid species, Pityogenes chalcographus, mtDNA numts, Wolbachia
Source: In: Bentz, Barbara; Cognato, Anthony; Raffa, Kenneth, eds. Proceedings from the Third Workshop on Genetics of Bark Beetles and Associated Microorganisms. Proc. RMRS-P-45. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 15-19
Year: 2007
Emerald ash borer (EAB) was first detected in Michigan and Canada in 2002. Efforts by federal and state regulatory agencies to control this destructive pest have been challenged by the biology of the pest and the speed in which it has spread. Invasion dynamics of the beetle and identifying source…
Author(s): Alicia M. Bray, Leah S. Bauer, Robert A. Haack, Therese Poland, James J. Smith
Keywords: emerald ash borer, EAB, Agrilus planipennis, invasion genetics, invasion dynamics, beetle
Source: In: Bentz, Barbara; Cognato, Anthony; Raffa, Kenneth, eds. Proceedings from the Third Workshop on Genetics of Bark Beetles and Associated Microorganisms. Proc. RMRS-P-45. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 21-22
Year: 2007
The marbled murrelet (Brachyramphus marmoratus) ranges from Alaska to California and is listed under the Endangered Species Act as a threatened species in Washington, Oregon, and California. Marbled murrelet recovery depends, in large part, on conservation and restoration of breeding…
Author(s): Martin G. Raphael, Jim Baldwin, Gary A. Falxa, Mark H. Huff, Monique Lance, Sherri L. Miller, Scott F. Pearson, C. John Ralph, Craig Strong, Chris Thompson
Keywords: Brachyramphus marmoratus, distance sampling, line transect, marbled murrelet, Northwest Forest Plan, population monitoring
Source: Gen. Tech. Rep. PNW-GTR-716. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 70 p
Year: 2007
Major wildland/urban interface fire losses, principally residences, continue to occur. Although the problem is not new, the specific mechanisms are not well known on how structures ignite in association with wildland fires. In response to the need for a better understanding of wildland/urban…
Author(s): Jack D. Cohen
Source: In: Weise, David R.; Martin, Robert E., technical coordinators. The Biswell symposium: fire issues and solutions in urban interface and wildland ecosystems; February 15-17, 1994; Walnut Creek, California. Gen. Tech. Rep. PSW-GTR-158. Albany, CA: Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture; p. 85-92
Year: 1995
Management of giant sequoia (Sequoiadendron giganteum,/i> [Lindl.] Buchholz) in Sequoia, Kings Canyon, and Yosemite National Parks focuses on the need for maintaining and, where necessary, restoring natural ecosystem processes. Such a program includes restoration of natural fire regimes,…
Author(s): David J. Parsons, H. Thomas Nichols
Source: In: Weatherspoon, C. Phillip; Iwamoto, Y. Robert; Piirto, Douglas D., technical coordinators. Proceedings of the workshop on management of giant sequoia; May 24-25, 1985; Reedley, California. Gen. Tech. Rep. PSW-GTR-95. Berkeley, CA: Pacific Southwest Forest and Range Experiment Station, Forest Service, U.S. Department of Agriculture: p. 26-29
Year: 1986
Fire has been an important evolutionary influence in forests, affecting species composition, structure, and functional aspects of forest biology. Restoration of wildland forests of the future will depend in part on restoring fire to an appropriate role in forest ecosystems. This may include the "…
Author(s): James K. Agee
Keywords: fire ecology, fire regimes, forest restoration, fire history
Source: In: Hardy, Colin C.; Arno, Stephen F., eds. The use of fire in forest restoration. Gen. Tech. Rep. INT-GTR-341. Ogden, UT: U.S. Department of Agriculture, Forest Service, Intermountain Research Station. p. 12-13.
Year: 1996
Forest monitoring systems have historically been designed to obtain data needed for timber management, but in the past few decades forests have been increasingly viewed as holistic systems that are best monitored with an integrated approach which includes the ecological and social aspects of…
Author(s): William Bechtold, Kurt Riitters
Source: In: Proceedings of the international symposium on forest health monitoring; 2007 January 30-31; Seoul; Republic of Korea. Available from Korea Forest Conservation Movement (sansarang@kfcm.or.kr): 19-40
Year: 2007
Given increasing need and decreasing capacity, the Forest Service outdoor recreation research program must strategize how best to address current and future priorities. The papers compiled here were presented at the National Workshop on Recreation Research and Management held in Portland, Oregon,…
Author(s): Linda E. Kruger, Rhonda Mazza, Kelly Lawrence
Keywords: Recreation, visitors, planning, monitoring, forest management
Source: Gen. Tech. Rep. PNW-GTR-698. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 230 p
Year: 2007
During September 19-20, 2006, a conference was held at the University of Washington Botanic Gardens, Seattle, WA, with the title "Meeting the challenge: invasive plants in Pacific Northwest Ecosystems." The mission of the conference was to create strategies and partnerships to understand and manage…
Author(s): Timothy B. Harrington, Sarah H. Reichard
Keywords: Non-native plants, invasive, exotic, weeds, vegetation management, early detection/rapid response, biological control, integrated management
Source: Gen. Tech. Rep. PNW-GTR-694. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 166 p
Year: 2007
Managers use prescribed fire to accomplish a variety of resource objectives. The knowledge needed to design successful prescriptions is both quantitative and qualitative. Some of it is available through publications and computer programs, but much of the knowledge of expert practitioners has never…
Author(s): Elizabeth Reinhardt
Source: In: Davis, James B.; Martin, Robert E., technical coordinators. 1987. Proceedings of the Symposium on Wildland Fire 2000, April 27-30, 1987, South Lake Tahoe, California. Gen. Tech. Rep. PSW-GTR-101. Berkeley, CA: Pacific Southwest Forest and Range Experiment Station, Forest Service, U.S. Department of Agriculture; p. 223-225
Year: 1987
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