Index Catalog // ScholarsArchive@OSU

Focus on forestry ; vol. 11, no. 3 (Fall 1998)

Creator:: Oregon State University. College of Forestry
Abstract:: Magazine of the OSU College of Forestry.
Resource Type:: Other
Full Text:: you will be equally proud. JJunP!-~ Dean College of Forestry Oregon State University (J t

Wood density of young-growth western hemlock: relation to ring age, radial growth, stand density, and site quality

Creator:: DeBell, Dean S., Singleton, Ryan, Gartner, Barbara L., and Marshall, David D.
Abstract:: Breast-high stem sections were sampled from 56 western hemlock (Tsuga heterophylla (Raf.) Sarg.) trees growing in 15 plots representing a wide range of tree and site conditions in northwestern Oregon. Growth and wood density traits of individual rings were measured via X-ray densitometry, and relationships of ring density and its...
Resource Type:: Article
Full Text:: : relation to ring age, radial growth, stand density, and site quality Dean S. DeBell, Ryan Singleton

Focus on forestry ; vol. 14, no. 2 (Spring 2001)

Creator:: Oregon State University. College of Forestry
Abstract:: Magazine of the OSU College of Forestry.
Resource Type:: Other
Full Text:: programs. HAL SALWASSER Dean DEBORAH J. BIRD Head Advisor GAIL WELLS Editor College of Forestry

Microcomputer applications in timber management and accounting

Creator:: Karas, Joseph, Ryan, Joan S., Rosette, Marvin, Oregon State University. College of Business, and Oregon State University. College of Forestry
Abstract:: The purpose of this monograph is to acquaint the reader with some possible uses of a microcomputer in timber management and accounting. Examples will illustrate the basic structure of an overall timber management and accounting system. The information contained in this monograph is tailored to the needs of the small,...
Resource Type:: Technical Report
Full Text:: 1988 Joseph Karas Moss Adams & Co. Joan S. Ryan Lane Community College Marvin Rosette C&R

Species, diversity, and density affect tree seedling mortality from Armillaria root rot

Creator:: Gerlach, J. P., Reich, P. B., Puettmann, Klaus J., and Baker, T.
Abstract:: Mortality from Armillaria root rot is a major concern of forest management. Field experiments were conducted in Minnesota to evaluate interspecific differential susceptibility and to assess whether density or species composition, specifically the proportion of conifers in a plot, influences seedling mortality from Armillaria spp. Seedlings of 10 tree species...
Resource Type:: Article
Full Text:: susceptibility (p < 0.0001); balsam fir (Abies balsamea(L.) Mill.), tamarack (Larix laricina (Du Roi) K. Koch

A preliminary report on tree planting as a gorse control measure

Creator:: Lavender, Denis P.
Resource Type:: Technical Report
Full Text:: ` - ra r. a.`al j ` U t 'le '+ u t' } is < ', o Co d' - I 3r a"1 'rte ` . - .t j k' r °i'- ari a' I

Forest soil characteristics in a chronosequence of harvested Douglas-fir forests

Creator:: Griffiths, Robert P. and Swanson, Alan K.
Abstract:: This study was designed to measure the microbiological and chemical characteristics of forest soils in a chronosequence of harvested Douglas-fir (Pseusotsuga menziesii (Mirb.) Franco) stands in different climatic settings. Mineral soil samples were collected along transects running from old-growth (OG) forests into harvested stands of ages 5, 15, and 40...
Resource Type:: Article
Full Text:: harvested Douglas-fir forests1 Robert P. Griffiths and Alan K. Swanson Abstract: This study was designed

Evaluating theories of drought-induced vegetation mortality using a multimodel– experiment framework

Creator:: McDowell, Nate G., Gehres, Nathan, Limousin, Jean Marc, Macalady, Alison, Martínez-Vilalta, Jordi, Mencuccini, Maurizio, Plaut, Jennifer A., Ogée, Jérôme, Robert E., Pangle, Rasse, Daniel P., Ryan, Michael G., Fisher, Rosie A., Sevanto, Sanna, Waring, Richard H., Williams, A. Park, Yepez, Enrico A., Pockman, William T., Xu, Chonggang, Domec, Jean-Christophe, Holtta, Teemu, Mackay, D. Scott, Sperry, John S., Boutz, Amanda, and Dickman, Lee
Abstract:: Model–data comparisons of plant physiological processes provide an understanding of mechanisms underlying vegetation responses to climate. We simulated the physiology of a pi~non pine–juniper woodland (Pinus edulis–Juniperus monosperma) that experienced mortality during a 5 yr precipitation-reduction experiment, allowing a framework with which to examine our knowledge of drought-induced tree mortality....
Resource Type:: Article
Full Text:: . Plaut8, J�erôme Og�ee14, Robert E. Pangle8, Daniel P. Rasse15, Michael G. Ryan16,17, Sanna Sevanto1

Leaf litter chemistry controls on decomposition of Pacific Northwest trees and woody shrubs

Creator:: Valachovic, Y. S., Caldwell, B. A., Cromack Jr., K., and Griffiths, Robert P.
Abstract:: The effects of initial leaf litter chemistry on first-year decomposition rates were studied for 16 common Pacific Northwest conifers, hardwoods, and shrubs at the H.J. Andrews Experimental Forest in western Oregon. Leaf litters were analyzed for C, N, P, K, Ca, Mg, proximate organic fractions (nonpolar, polar, acid-hydrolyzable extractives, acid-hydrolyzable...
Resource Type:: Article
Full Text:: significantly (P < 0.01) correlated to k © 2004 NRC Canada 2136 Can. J. For. Res. Vol. 34, 2004 Species group

Contributions of ectomycorrhizal fungal mats to forest soil respiration

Creator:: Phillips, C. L., Kluber, L. A., Martin, J. P., Caldwell, B. A., and Bond, B. J.
Abstract:: Distinct aggregations of fungal hyphae and rhizomorphs, or "mats", formed by some genera of ectomycorrhizal (EcM) fungi are common features of soils in coniferous forests of the Pacific Northwest. We measured in situ respiration rates of Piloderma mats and neighboring non-mat soils in an old-growth Douglas-fir forest in western Oregon...
Resource Type:: Article
Full Text:: . P. Martin3, B. A. Caldwell3, and B. J. Bond4 1Center for Accelerator Mass Spectrometry, Lawrence

Arbutus menziesii (Ericaceae) facilitates regeneration dynamics in mixed evergreen forests by promoting mycorrhizal fungal diversity and host connectivity

Creator:: Kennedy, Peter G., Smith, Dylan P., Horton, Tom R., and Molina, Randy J.
Abstract:: • Premise of study: In the mixed evergreen forests in the western United States, Arbutus menziesii is able to quickly resprout following disturbance and, as such, act as a nurse tree during forest regeneration. The mechanism for this nurse tree effect has frequently been ascribed to mycorrhizal fungi, but no...
Resource Type:: Article
Full Text:: CONNECTIVITY 1 PETER G. KENNEDY 2,6 , DYLAN P. SMITH 2,3 , TOM R

Evidence for Mate Guarding Behavior in the Taylor's Checkerspot Butterfly

Creator:: Bennett, Victoria J., Smith, Winston P., and Betts, Matthew G.
Abstract:: Discerning the intricacies of mating systems in butterflies can be difficult, particularly when multiple mating strategies are employed and are cryptic and not exclusive. We observed the behavior and habitat use of 113 male Taylor’s checkerspot butterflies (Euphydryas editha taylori). We confirmed that two distinct mating strategies were exhibited; patrolling...
Resource Type:: Article
Full Text:: Butterfly Victoria J. Bennett & Winston P. Smith & Matthew G. Betts Revised: 29 July 2011 /Accepted: 9

Short-term response of Dicamptodon tenebrosus larvae to timber management in southwestern Oregon

Creator:: Leuthold, Niels, Adams, Michael J., and Hayes, John P.
Abstract:: In the Pacific Northwest, previous studies have found a negative effect of timber management on the abundance of stream amphibians, but results have been variable and region specific. These studies have generally used survey methods that did not account for differences in capture probability and focused on stands that were...
Resource Type:: Article
Full Text:: , Oregon State University, 321 Richardson Hall, Corvallis, OR 97331, USA MICHAEL J. ADAMS, Forest and

Comparative hazard assessment for protected species in a fire-prone landscape

Creator:: Roloff, Gary J., Mealey, Stephen P., and Bailey, John D.
Abstract:: We conducted a comparative hazard assessment for 325,000 ha in a fire-prone area of southwest Oregon, USA. The landscape contains a variety of land ownerships, fire regimes, and management strategies. Our comparative hazard assessment evaluated the effects of two management strategies on crown fire potential and northern spotted owl (Strix...
Resource Type:: Article
Full Text:: , A., Breshears, D. D., Hogg, E. H., Gonzalez, P., 542 Fensham, R., Zhang, Z., Castro, J., Demidova

Bearing Strength Capacity of Continuous Supported Timber Beams: Unified Approach for Test Methods and Structural Design Codes

Creator:: Leijten, A. J. M., Franke, S., Quenneville, P., and Gupta, R.
Abstract:: Bearing or compressive strength capacity perpendicular to the grain of timber beams is a troublesome issue. Not only do many different load cases occur in practice that are not covered by structural timber design codes but also these codes provide only a basic provision and vary throughout continents. Code design...
Resource Type:: Article
Full Text:: , Designation D 198-09, ASTM, West Conshohocken, PA. 708 pp DOI: 10.1520/D0198-09 Bodig J. and Jayne B. A

A model-data comparison of gross primary productivity: Results from the North American Carbon Program site synthesis

Creator:: Schaefer, Kevin, Schwalm, Christopher R., Williams, Chris, Arain, M. Altaf, Barr, Alan, Chen, Jing M., Davis, Kenneth J., Dimitrov, Dimitre, Hilton, Timothy W., Hollinger, David Y., Humphreys, Elyn, Poulter, Benjamin, Raczka, Brett M., Richardson, Andrew D., Sahoo, Alok, Thornton, Peter, Vargas, Rodrigo, Verbeeck, Hans, Anderson, Ryan, Baker, Ian, Black, T. Andrew, Bolstad, Paul, Chen, Jiquan, Curtis, Peter S., Desai, Ankur R., Dietze, Michael, Dragoni, Danilo, Gough, Christopher, Grant, Robert F., Gu, Lianhong, Jain, Atul, Kucharik, Chris, Law, Beverly, Liu, Shuguang, Lokipitiya, Erandathie, Margolis, Hank A., Matamala, Roser, McCaughey, J. Harry, Monson, Russ, Munger, J. William, Oechel, Walter, Peng, Changhui, Price, David T., Ricciuto, Dan, Riley, William J., Roulet, Nigel, Tian, Hanqin, Tonitto, Christina, Torn, Margaret, Weng, Ensheng, and Zhou, Xiaolu
Abstract:: Accurately simulating gross primary productivity (GPP) in terrestrial ecosystem models is critical because errors in simulated GPP propagate through the model to introduce additional errors in simulated biomass and other fluxes. We evaluated simulated, daily average GPP from 26 models against estimated GPP at 39 eddy covariance flux tower sites...
Resource Type:: Article
Full Text:: . Schwalm,2 Chris Williams,3 M. Altaf Arain,4 Alan Barr,5 Jing M. Chen,6 Kenneth J. Davis,7 Dimitre

Oregon State Forester ; Vol. 27, No. 1 (January 1985)

Creator:: OSU Forestry Alumni Association
Abstract:: Annual Magazine of the OSU Forestry Alumni Association.
Resource Type:: Other
Full Text:: the ecosystems group. The Long-Term Ecological Research on the H. J. Andrews Ex- perimental Forest

Oregon State Forester ; Vol. 26, No. 1 (January 1973)

Creator:: OSU Forestry Alumni Association
Abstract:: Magazine of the OSU Forestry Alumni Association.
Resource Type:: Other
Full Text:: CLARENCE J . BUDELIER '17 WILLARD J. CHAMBERLIN '15 ALEX R. CRAVEN '27 WAYNE GURLEY '41 MILLARD P

Probabilistic assessment of wildfire hazard and municipal watershed exposure

Creator:: Scott, Joe, Helmbrecht, Don, Thompson, Matthew P., Calkin, David E., and Marcille, Kate
Abstract:: The occurrence of wildfires within municipal watersheds can result in significant impacts to water quality and ultimately human health and safety. In this paper, we illustrate the application of geospatial analysis and burn probability modeling to assess the exposure of municipal watersheds to wildfire. Our assessment of wildfire exposure consists...
Resource Type:: Article
Full Text:: for wildland fire risk assessment and fuel management planning. J Combust. Article ID 572452, p 19

Modeling the incidence and severity of hemlock dwarf mistletoe in 110-year-old wind-disturbed forests in Southeast Alaska

Creator:: Trummer, L. M., Hennon, P. E., Hansen, E. M., and Muir, P. S.
Abstract:: A model was developed to predict the severity of dwarf mistletoe (Arceuthobium tsugense (Rosendahl) G.N. Jones) in western hemlock trees (Tsuga heterophylla (Raf.) Sarg.) that developed within forests of Southeast Alaska that experienced near-catastrophic windthrow in the late 1800s. The model suggests that the degree of dwarf mistletoe severity on...
Resource Type:: Article
Full Text:: . 1996). Wildlife use of Can. J. For. Res.28: 1501–1508 (1998) © 1998 NRC Canada 1501 Received March

Applying the dual-isotope conceptual model to interpret physiological trends under uncontrolled conditions

Creator:: Barnard, H. R., Brooks, J. R., and Bond, B. J.
Abstract:: The inter-relationships among δ¹³C and δ¹⁸O in tree ring cellulose and ring width have the potential to illuminate long-term physiological and environmental information in forest stands that have not been monitored. We examine how within-stand competition and environmental gradients affect ring widths and the stable isotopes of cellulose. We utilize...
Resource Type:: Article
Full Text:: earlywood samples was relatively constant over time for δ13Ccell (P = 0.75); however, all size classes

Habitat use by snag-associated species : a bibliography for species occurring in Oregon and Washington

Creator:: Weikel, Jennifer M., Hayes, John P. (John Parker), and Oregon State University. Forest Research Laboratory
Abstract:: Fifty-seven species of wildlife rely on or frequently use snags for breeding, roosting, or denning in Oregon and Washington. Several publications offer information on use of snags by wildlife, influence of management activities on snags and snag users, and approaches to managing snags to benefit wildlife. Because of the diverse...
Resource Type:: Technical Report
Full Text:: Jennifer M. Weikel and John P. Hayes Photograph by Rebecca Goggans

Oregon State Forester ; Vol. 32, No. 1 (January 1979)

Creator:: OSU Forestry Alumni Association
Abstract:: Magazine of the OSU Forestry Alumni Association.
Resource Type:: Other
Full Text:: Board of Directors. Hann is Con- servation Director of the Oregon State Forestry Department. Wesley J

Functional trade-offs in the limb bones of dogs selected for running versus fighting

Creator:: Kemp, T. J., Bachus, K. N., Nairn, J. A., and Carrier, D. R.
Abstract:: The physical demands of rapid and economical running differ from the demands of fighting in ways that may prevent the simultaneous evolution of optimal performance in these two behaviors. Here, we test an hypothesis of functional trade-off in limb bones by measuring mechanical properties of limb bones in two breeds...
Resource Type:: Article
Full Text:: large range of T. J. Kemp and others Table 2. Material properties of the bone Greyhound Pit bull P

Seeding dates and Douglas fir germination

Creator:: Lavender, Denis P. and Oregon Forest Lands Research Center
Resource Type:: Technical Report
Full Text:: _.,; i a y.r _r ti alb _ __ , _, 1 }/ r by . - '` ;,' Denis P. Lavender, - :A L - - ' r i N I

Water sorption characteristics of two wood-plastic composites

Creator:: Wang, Weihong and Morrell, J. J.
Abstract:: Wood-plastic composites are generally presumed to be inherently more resistant to moisture uptake than solid wood, but there is little data on the relative rates of moisture uptake in these materials over time. Trex[R] and Strandex[R] deck sections were immersed in water for up to 215 days, then sections were...
Resource Type:: Article
Full Text:: characteristics of two wood-plastic composites Weihong Wang J. J. Morrell✳ While wood-plastic composites (WPC

Effect of seed size on Douglas Fir seedlings

Creator:: Lavender, Denis P. and Oregon Forest Lands Research Center
Resource Type:: Technical Report
Full Text:: selection and breeding. Effect of Seed Size on Douglas Fir Seedlings by Denis P. Lavender Introduction

Effect of field stratification on Douglas Fir seed germination

Creator:: Lavender, Denis P. and Oregon Forest Lands Research Center
Resource Type:: Technical Report
Full Text:: by Denis P. Lavender Introduction Success of coniferous seedings on Pacific Northwest forest land

Viability of Douglas fir seed after storage in the cones

Creator:: Lavender, Denis P. and Oregon Forest Lands Research Center
Resource Type:: Technical Report
Full Text:: 9 V* S z _ ,, .` eon I L Q, a- a... Research Note No. 31 by Denis P. Lavender A I IN !1 u

Viability of seeds from squirrel-cut Douglas fir cones

Creator:: Lavender, Denis P. and Engstrom, W. H.
Abstract:: To determine if squirrels (Sciurus douglasii var.) cut cones before the seeds are ripe, a series of collection points was established in the Willamette Valley and the Cascade Mountains in the summer of 1954. The areas were inspected at intervals during August, September and October of 1954, and freshly cut...
Resource Type:: Technical Report
Full Text:: VIABILITY of SEEDS from SQUIRREL- CUT DOUGLAS FIR CONES By DENIS P. LAVENDER Research Silviculturist and

Field and laboratory tests of some forest rodent control preparations

Creator:: Lavender, Denis P. and Oregon State Board of Forestry
Abstract:: Purpose: To determine the effect of exposure to weathering agents on poison baits and repellents.
Resource Type:: Technical Report
Full Text:: RODENT CONTROL PREPARATIONS Denis P. Lavender Research Assistant Photography By Wilbur H. Engstrom

Effect of ground cover on seedling germination and survival

Creator:: Lavender, Denis P. and Oregon Forest Lands Research Center
Resource Type:: Technical Report
Full Text:: IORICULTU E ROOM Effect of Ground Cover on Denis P

Bibliography of wood-moisture relationships

Creator:: Kozlik, Charles J.
Resource Type:: Technical Report
Full Text:: . 8, Wood Res., Kyoto, (68-73). March, 1952. Krier, J. P. 'How Liquids Move Through Woods." Frontiers

Resistance of Selected Wood-Based Materials to Fungal and Termite Attack in Non–Soil Contact Exposures

Creator:: Morrell, Jeffrey J.
Abstract:: The resistance of three naturally durable heartwood species and a stranded giant bamboo product to fungal and termite (Coptotermes formosanus) attack was evaluated at a test site located near Hilo, Hawaii. Merbau (Intsia bijuga or I. palembanica) and ipe (Tabebuia spp.) were both exceptionally resistant to fungal and termite attack,...
Resource Type:: Article
Full Text:: (3):429–433. Morrell, J. J., D. J. Miller, and P. F. Schneider. 1999. Service life of treated and

Bibliography of special seasoning methods

Creator:: Kozlik, Charles J.
Resource Type:: Technical Report
Full Text:: power requirements, time cycle, and operating cost. 13 Taylor, J. P. "ABC of Heating Wood with High

Decomposition of metham sodium to methylisothiocyanate as affected by wood species, temperature, and moisture content

Creator:: Morrell, Jeffrey J.
Abstract:: The effect of various wood characteristics on decomposition of metham sodium to methylisothiocyanate in sixteen North American and Southeast Asian hardwoods and softwoods was investigated. While marked differences were noted in the degree of decomposition among some species, the relationship between decomposition and lignin content, extractive levels, wood pH, or...
Resource Type:: Article
Full Text:: AFFECTED BY WOOD SPECIES, TEMPERATURE, AND MOISTURE CONTENT1 Jefrey J. Morrell Assistant Professor

Assessment of the BLM Exemption Request for Sales Ruled to Jeopardize the Northern Spotted Owl: Including a statement of conclusions by Tom Walsh, Oregon Representative on the Endangered Species Committee

Creator:: Greber, Brian J.
Abstract:: In September 1991, the Bureau of Land Management asked the Secretary of the Interior to convene the Endangered Species Committee. The Bureau wanted permission to proceed with 44 timber sales In Oregon that the U.S. Fish and Wildlife Service had ruled would jeopardize the continued existence of the northern spotted...
Resource Type:: Technical Report
Full Text:: University, Corvallis. Special Publication 17. 20 p. JOHNSON, K.N., J.F. FRANKLIN, J.W. ThoMAS, and J

Aspect Ratio Requirements for Nanotube-Reinforced, Polymer-Matrix Composites

Creator:: Nairn, J. A.
Abstract:: A fiber’s efficiency in a short-fiber composite can be accurately solved by shear-lag methods, which can account for fiber geometry, an imperfect interface (or interphase), and extend to low volume fractions. Such an analysis was used to evaluate the aspect ratio requirements for single-walled nanotubes (SWNT) in a polymeric composite...
Resource Type:: Article
Full Text:: , 2nd Edition, Kluwer Academic Publishers, 2002. [3] J. A. Nairn, On the use of shear-lag methods for

Landscape characteristics and coho salmon (Oncorhynchus kisutch) distributions: explaining abundance versus occupancy

Creator:: Steel, E. A., Jensen, D. W., Burnett, K. M., Christiansen, K., Firman, J. C., Feist, B. E., Anlauf, K. J., and Larsen, D. P.
Abstract:: Distribution of fishes, both occupancy and abundance, is often correlated with landscape-scale characteristics (e.g., geology, climate, and human disturbance). Understanding these relationships is essential for effective conservation of depressed populations. We used landscape characteristics to explain the distribution of coho salmon (Oncorhynchus kisutch) in the Oregon Plan data set, one...
Resource Type:: Article
Full Text:: , Corvallis, OR 97331, USA. 457 Can. J. Fish. Aquat. Sci. 69: 457–468 (2012) doi:10.1139/F2011-161 Published

Canopy type, forest floor, predation, and competition influence conifer seedling emergence and early survival in two Minnesota conifer-deciduous forests

Creator:: Cornett, Meredith W., Puettmann, Klaus J., and Reich, Peter B.
Abstract:: There is concern that the conifer component of mixed conifer-deciduous forests in the Great Lakes region is on the decline, possibly the result of insufficient conifer regeneration. Limitations on conifer regeneration that occur during the first 18 months of seedling emergence and establishment were examined for Abies balsamea (L.) Mill....
Resource Type:: Article
Full Text:: –deciduous forests Meredith W. Cornett, Klaus J. Puettmann, and Peter B. Reich Abstract: There is concern

Interaction of vegetation control and fertilization on conifer species across the Pacific Northwest

Creator:: Rose, Robin and Ketchum, J. Scott
Abstract:: An experiment evaluating three levels of vegetation competition control (no control, 1.5 m2 of vegetation control, and 3.3 m2 of vegetation control), each with two fertilization treatments (fertilization at the time of planting with complete slow-release fertilizer (Woodace® IBDU), or no fertilization), was installed at five sites. Two of these...
Resource Type:: Article
Full Text:: fertilization on conifer species across the Pacific Northwest1 Robin Rose and J. Scott Ketchum Abstract: An

Oregon State Forester ; Vol. 5, No. 1 (January 1952)

Creator:: OSC Oregon Forestry Alumni Association
Abstract:: Magazine of the OSC Oregon Forestry Alumni Association.
Resource Type:: Other
Full Text:: nenls withou t seriously impairing- J'JJ!JJre p rod ucti vi ty. ' J o 1neet crilical ti111ber d emands

Focus on forestry ; vol. 6, no. 3 (Fall 1993)

Creator:: Oregon State University. College of Forestry
Abstract:: Magazine of the OSU College of Forestry.
Resource Type:: Other
Full Text:: year, we received only about 30 p ercent of our total budgetary support from state funds. State funds

High frequency transformation of cottonwoods (genus Populus) by Agrobacterium rhizogene

Creator:: Han, Kyung-Hwan, Gordon, Milton P., and Strauss, Steven H.
Abstract:: Many species of Populus, particularly cottonwoods of sections Aigeiros and Tacamahaca, remain recalcitrant to genetic transformation. We demonstrate that transgenic trees can be readily produced in several poplar genotypes using wild-type Agrobacterium rhizogenes. Hairy roots were produced in a variety of clones that included Populus trichocarpa Torr. & A. Gray,...
Resource Type:: Article
Full Text:: Agrobacterium rhizogenes Kyung-Hwan Han, Milton P. Gordon, and Steven H. Strauss Abstract: Many species of

Environment and shoot growth of woody plants

Creator:: Lavender, Denis P. and Oregon State University. Forest Research Laboratory
Abstract:: Perennial woody plants have a complex annual cycle keyed to the environment. Temperate plants have an annual dormant period commonly broken by exposure to low temperatures, although daily photoperiods of 16 hours or longer may partially substitute for the chilling. Shoot growth in the spring is normally stimulated by rising...
Resource Type:: Technical Report
Full Text:: I f'O J ° F i9 on a''s ,y . l t£062 FOREJI REIEARcH LAB AIJG2000,, STUly T i 0 0 SCHOOL OF

Decomposition and nitrogen release from decomposing woody roots in coniferous forests of the Pacific Northwest: a chronosequence approach

Creator:: Chen, Hua, Harmon, Mark E., and Griffiths, Robert P.
Abstract:: Decomposition of woody roots in Sitka spruce (Picea sitchensis (Bong.) Carrière), Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco), and ponderosa pine (Pinus ponderosa P. Laws. ex C. Laws.) dominated forests in Oregon, U.S.A. was studied using a chronosequence. Roots of five coniferous species were excavated from stumps with ages up to 46...
Resource Type:: Article
Full Text:: . Harmon, and Robert P. Griffiths Abstract: Decomposition of woody roots in Sitka spruce (Picea sitchensis

Crown profile equations for stand-grown western hemlock trees in northwestern Oregon

Creator:: Marshall, David D., Johnson, Gregory P., and Hann, David W.
Abstract:: Crown profile equations were developed for stand-grown western hemlock (Tsuga heterophylla (Raf.) Sarg.) in northwest Oregon. The profile model uses a segmented approach, dividing the crown into an upper and lower portion at the point of the largest crown width (LCW). The model explains about 86% of the variation in...
Resource Type:: Article
Full Text:: northwestern Oregon David D. Marshall, Gregory P. Johnson, and David W. Hann Abstract: Crown profile

Size and survival of 2-0 Douglas-fir seedlings

Creator:: Zaerr, Joe B., Lavender, Denis P., and Oregon State University. Forest Research Laboratory
Abstract:: Results reported here are from a large study designed to evaluate the effects of certain nursery procedures on subsequent survival of Douglas-fir seedlings. The effects of storage conditions and lifting dates were reported elsewhere (9). The determination of the optimum size of seedling for planting on different sites has been...
Resource Type:: Technical Report
Full Text:: Pub. 1049. 15 p. 1964. 2. EDGREN, J. W. "Douglas-fir Nursery Stock Survival by Age Classes." IN

Early growth and drought avoidance in Douglas-fir seedlings

Creator:: Heiner, Terry Charles, 1941-, Lavender, Denis P., and Oregon State University. Forest Research Laboratory
Abstract:: Although the Douglas-fir region of the northwestern United States and British Columbia is frequently considered to have a common silviculture, obstacles to successful regeneration of the species range from competing vegetation and mammals on the mesic sites to extreme drought and heat on the xeric southerly exposures in northern California...
Resource Type:: Technical Report
Full Text:: ." Forest Science 12:441446. 1966. 5. LAVENDER, D. P., R. K. HERMANN, and J. B. ZAERR. "Growth Potential of

Date of lifting for survival of Douglas-fir seedlings

Creator:: Lavender, Denis P. and Oregon State University. Forest Research Laboratory
Abstract:: The effect of lifting Douglas-fir seedlings from the nursery bed and replanting them, either immediately or after storage at 2 C for periods up to six weeks, was investigated through a series of experiments conducted in controlled-environment chambers and under field conditions. Seedlings lifted prior to December, or after buds...
Resource Type:: Technical Report
Full Text:: . Dept. of Agri. 22 p. 1952. 16. Romberger, J. A. Meristeins, Growth and Development in Woody Plants

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