Initial thinning effects in 70- to 150-year-old douglas-fir-western Oregon and Washington by Richard L. Williamson Download PDF EPUB FB2
Initial thinning effects in to year-old douglas-fir-western Oregon and Washington. Portland, Or.: Pacific Northwest Forest and Range Experiment Station, Forest Service, U.S.
Dept. of. nine study ares ranging rom 70 to years old when thinned. Recoverable cubic-volume growth, averaging 81 percent of normal gross growth, was recorded for up to 38 years with single thinnings and for 18 years with two thinnings.
This percentage increases with stand age, but rate of response to thinning decreases with increasing stand age. Thinning should follow marking guidelines previously recommended but with more emphasis on crown release since spacing is important in vigorous, mature stands as well as in younger stands.
Citation: Williamson, Richard L.; Price, Frank E. Initial thinning effects in to year-old Douglas-fir--western Oregon and Washington.
Res. Pap. Initial thinning effects in to year-old douglas-fir-western Oregon and Washington by Williamson, Richard L; Price, Frank E. Buy Initial thinning effects in to year-old douglas-fir-western Oregon and Washington (USDA Forest Service research paper PNW) by Richard L Williamson (ISBN:) from Amazon's Book Store.
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This banner text can have markup. web; books; video; audio; software; images; Toggle navigation. Elevations ranged from to m, with precipitation primarily in the form of rain (– cm). Most sites were in the Western Hemlock Zone (Franklin and Dyrness, ), where western hemlock (Tsuga heterophylla (Raf.) Sarg.) is considered by: Full Text; PDF ( K) PDF-Plus ( K) Adjacency to a harvest trail increases drought resistance of interior Douglas-fir (Pseudotsuga menziesii var.
glauca) in partially harvested stands in central British ColumbiaNeil P. Thompson, a Kathy J. Lewis, b Lisa M. Poirier b a Applied Forest Management, University of Maine at Fort Kent, 23 University Drive, Fort Kent, ME: Neil Phillips Thompson, Kathy J Lewis, Lisa Poirier.
Integrating Pheromone and Silvicultural Methods for Managing the Douglas-fir Beetle. Initial thinning effects in 70 to year-old. Douglas-fir-western Oregon and Washington. An instantaneous puff dispersion model was used to assess concentration fields of the Douglas-fir beetle, Dendroctonus pseudotsugae Hopkins, antiaggregation pheromone, 3-methylcyclohexenone (MCH), within a 1-ha circular plot.
Several combinations of MCH release rate and releaser spacing were modeled to theoretically analyze optimal deployment strategies. The combinations of MCH release. Understory Response to Repeated Thinning in Douglas-fir Forests of Western Oregon Article in Journal of Sustainable Forestry 31(6) September with 30 Reads How we measure 'reads'.
pass through this to year-old range, providing regeneration cuts are not made prior to age Table Inventory of Douglas-fir type, western Oregon and Washington, 1 Thousand acres Age class Million cu.
Million bd. (Scribner) Area Total, 50 1, 10. The above- and below-ground biomass allocation and leaf structure of understory salal (Gaultheria shallon) were compared between an unthinned and a heavily thinned (two-thirds of basal area removed) year-old Douglas-fir (Pseudotsuga menziesii) plot 6 years after thinning at Shawnigan Lake on southern Vancouver Island, British increase in both above- and below-ground resources Cited by: Book Title: The Statesman s Year Book 70 Author: S.
Steinberg Publisher: Springer Release Date: Pages: ISBN: Available Language:. Oregon State Board of Forestry, ), by Denis P. Lavender and Oregon State Board of Forestry (page images at HathiTrust; US access only) Provisional optimum thinning intensity tables: a basis for thinning yield control of Douglas-fir / ([Olympia]: State of Washington, Dept.
of Natural Resources, ), by Gerald E. Hoyer (page images. When trying to identify a conifer in western Oregon or Washington, if you guess that it’s a Douglas Fir, you will be right 80% of the time. Two varieties of Douglas Fir grow in the Northwest:* Pseudotsuga menziesii var.
menziesii grows in western Oregon and Washington from sea level up to feet. Douglas-fir (Pseudotsuga menziesii [Mirb.] Franco var. menziesii) and Douglas-fir/western hemlock (Tsuga heterophylla [Raf.] Sarg.) stands were thinned at age 5Cited by: 7. Oregon ; 80% Lower Laws Sign in to follow this.
Followers 0. 80% Lower Laws. By CelticMonster, Decem in Oregon. Recommended Posts. CelticMonster 5 CelticMonster 5 Living in freedom; Group: Members; Member ID:. Informational table showing disease name, symptoms, pathogen/cause, and management of Douglas-Fir diseases.
Douglas-fir in the landscape browning from Rhabdocline needlecast. These needle cast diseases can be infecting your trees for up to three years before you notice any symptoms; but whether it is the stress of winter, other stresses or a combination of events, we have seen this disease express its fruiting bodies with symptoms exploding on trees.
Abstract. An instantaneous puff dispersion model was used to assess concentration fields of the Douglas-fir beetle, Dendroctonus pseudotsugae Hopkins, antiaggrCited by: 3. Liane R. Davis" and Klaus J. Puettmann, Department of Forest Science, Oregon State University, Corvallis, Oregon and Gabriel F.
Tucker, Castor International, 8th Avenue S.W., Olympia, Washington Overstory Response to Alternative Thinning Treatments in Young Douglas-fir Forests of Western Oregon Abstract. Sampling from natural populations. Wind-pollinated seed was collected from parent trees of Douglas Fir [Pseudotsuga menziesii (Mirb.)Franco var.
menziesii] in naturally regenerated stands at locations in western Oregon and Washington (Fig. 1).Most of the seed was obtained from previous collections of the USDA Forest Service, USDI Bureau of Land Management, Oregon Cited by: Thinning Mixed-Species Stands of Douglas-Fir and Western Hemlock in the Presence of Swiss Needle Cast: Guidelines Based on Relative Basal Area Growth of Individual Thinning Mixed-Species Stands of Douglas-Fir and Western Hemlock in the Presence of Swiss Needle Cast: Guidelines Based on Relative Basal Area Growth of Individual Trees.
Forest Cited by: 5. 2 ABSTRACT A year-old Douglas-fir [Pseudotsuga menziesii (Mirb.) Franco] stand in the Oregon Coast Range was thinned from about 1, to about trees/ac.
At a 27, 30, trees were cut according to eight different thinning regimes; untreated. Hidden and Forgotten Oregon Old-Growth Treasures. Thu, 11/17/ - | guest. By Darryl Lloyd. This past year my brother Darvel and I have been doing a lot of bushwhacking and exploring for big trees in Oregon, Washington and northern California.
In June we visited a couple of relatively small and unknown old-growth areas of Oregon. Nine years after variable-density thinning (VDT) on the Forest Ecosystem Study, we examined low understory vegetation in 60 plots of eight stands (four pairs of VDT and control).
We compared native, exotic, ruderal, and nonforest species richness among the stands. We used clustering, ordination, and indicator species analysis to look for distinctive patches of plant associations.
Thinning systems for western Oregon Douglas-fir stands-- what is best for you. (E[xtension] C[ircular] / Oregon State University Extension Service) Unknown Binding – January 1, by William H Emmingham (Author) See all formats and editions Hide other formats and editions.
The Amazon Book Review Author interviews, book reviews, editors Author: William H Emmingham. As one of the worst flu seasons in nearly a decade continues to thrive across the country, Oregon is the first state in the lower 48 to see the virus decline from "widespread" to "regional".
Damage Characteristics in Young Douglas-Fir Stands from Commercial Thinning with Four Timber Harvesting Systems Han-Sup Han and Loren D. Kellogg, Department of Forest Engineering, College of Forestry, Oregon State University, Corvallis, OR The Douglas Fir is the dominant conifer in Oregon and Washington west of the Cascades.
It is found in portions of British Columbia, and has been taken around the world for use in forest plantations. It is a fire cycle tree that regenerates quickly on the scorched earth residual of a forest fire.12 months 34 74 97 24 64 91 30 70 99 Adult 6 46 86 7 47 87 10 50 90 by a few Hz--a small difference, given the magnitude of infant-adult differences typically observed.
During testing, the earphone was held firmly in place in the infant's ear with hypoallergenic micropore tape; the earphone cord was taped.