Index Catalog // ScholarsArchive@OSU

Evidence for xylem embolism as a primary factor in dehydration-induced declines in leaf hydraulic conductance

Creator:: Johnson, Daniel M., McCulloh, Katherine A., Woodruff, David R., and Meinzer, Frederick C.
Abstract:: Hydraulic conductance of leaves (K[subscript leaf]) typically decreases with increasing water stress and recent studies have proposed different mechanisms responsible for decreasing K[subscript leaf]. We measured K[subscript leaf] concurrently with ultrasonic acoustic emissions (UAEs) in dehydrating leaves of several species to determine whether declining K[subscript leaf] was associated with xylem...
Resource Type:: Article
Full Text:: , KATHERINE A. MCCULLOH2, DAVID R. WOODRUFF3 & FREDERICK C. MEINZER3 1Nicholas School of the Environment

Hydraulic safety margins and embolism reversal in stems and leaves: Why are conifers and angiosperms so different?

Creator:: Johnson, Daniel M., McCulloh, Katherine A., Woodruff, David R., and Meinzer, Frederick C.
Abstract:: Angiosperm and coniferous tree species utilize a continuum of hydraulic strategies. Hydraulic safety margins (defined as differences between naturally occurring xylem pressures and pressures that would cause hydraulic dysfunction, or differences between pressures resulting in loss of hydraulic function in adjacent organs (e.g., stems vs. leaves) tend to be much...
Resource Type:: Article
Full Text:: embolism reversal in stems and leaves: Why are conifers and angiosperms so different? R H c D a b c

Focus on forestry ; vol. 6, no. 2 (Spring 1993)

Creator:: Oregon State University. College of Forestry
Abstract:: Magazine of the OSU College of Forestry.
Resource Type:: Other
Full Text:: Johnson (that's lt i111 0 11 the cover, 11 pper right) takes notes 0 11 n mill visit. The other

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

Financial feasibility of marker-aided selection in Douglas-fir

Creator:: Johnson, G. R., Wheeler, N. C., and Strauss, S. H.
Abstract:: The land area required for a marker-aided selection (MAS) program to break-even (i.e., have equal costs and benefits) was estimated using computer simulation for coastal Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) in the Pacific Northwestern United States. We compared the selection efficiency obtained when using an index that included the phenotype...
Resource Type:: Article
Full Text:: -fir G.R. Johnson, N.C. Wheeler, and S.H. Strauss Abstract: The land area required for a marker-aided

Tarif tables for mountain hemlock developed from an equation of total stem cubic-foot volume

Creator:: Bell, John F., Marshall, David D., Johnson, Gregory P., and Oregon State University. Forest Research Laboratory
Abstract:: Tarif access tables were developed for mountain hemlock [Tsuga mertensiana (Bong.) Carr.] on the Deschutes National Forest in the Central Oregon Cascade Mountains from an equation for cubic-foot volume including top and stump (CVTS). These tables provide access to the comprehensive tree-volume tarif system.
Resource Type:: Technical Report
Full Text:: G.P. JOHNSON I F RF.IT REIEARCH LAS, j[ CHOOL OF FORESTRY O TON STATE UNIVERSITY Since 1941, the

The market for waterfowl hunting on private agricultural land in western Oregon

Creator:: Rasker, Ray, Cleaves, David A., Johnson, Rebecca L., 1955-, and Oregon State University. Forest Research Laboratory
Abstract:: Trends in fee hunting in Oregon are examined, with particular emphasis on waterfowl in the western part of the state. Farmers with potential or existing waterfowl habitat in western Oregon were surveyed about their views on managing their lands for waterfowl. As incentives to such practices, they listed the financial...
Resource Type:: Technical Report
Full Text:: Private Agricultural Land in Western Oregon Raymond Rasker Rebecca L. Johnson David Cleaves FOREIT

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:: c-;1irst, lee me say what a pleasure it is to greet alumni

Focus on forestry ; vol. 5, no. 1 (Winter 1992)

Creator:: Oregon State University. College of Forestry
Abstract:: Focus on Forestry is published three times each year (Fall, Winter, Spring) by the College of Forestry, Oregon State University.
Resource Type:: Other
Full Text:: without precluding at least some level of harvest." Meslow, David W. Hann, and Jolm C. Tappeiner are

Focus on forestry ; vol. 3, no. 1 (Winter 1990)

Creator:: Oregon State University. College of Forestry
Abstract:: Focus on Forestry is published three times each year (Fall, Winter, Spring) by the College of Forestry, Oregon State University.
Resource Type:: Other
Full Text:: C entral Oregon's Warm Springs Indian Reservation covers 650,000 acres of highly varied

Potential for Coastal Wetland Blue Carbon Offset Projects in the Point Reyes Area

Creator:: Minnick, Margaret T.
Abstract:: Point Reyes is a 100-square mile peninsula located on the California coast about 30 miles north of San Francisco. The peninsula, surrounding bays, and neighboring coastal mainland are a unique biodiversity hotspot. The area underwent heavy human use, including ranching and logging, during the late 1800s and early 1900s. Conservation...
Resource Type:: Capstone Project
Full Text:: habitat and recreational opportunities, and to destroy essential infrastructure (C-SMART 2016). An

Focus on forestry ; vol. 14, no. 1 (Winter 2001)

Creator:: Oregon State University. College of Forestry
Abstract:: Magazine of the OSU College of Forestry.
Resource Type:: Other
Full Text:: propagation. David Rosowsky, Forest Produces, is winner of the 2001 Walter L. Huber C ivil Engineering

Focus on forestry ; vol. 11, no. 1 (Winter 1998)

Creator:: Oregon State University. College of Forestry
Abstract:: Magazine of the OSU College of Forestry.
Resource Type:: Other
Full Text:: . Tech. Rep. 285. Tappeiner, John C., David Huffman, David Marshall, Thomas A. Spies, and John D

Fertilization impacts on Swiss needle cast disease severity in western Oregon

Creator:: Mulvey, Robin L., Shaw, David C., and Maguire, Douglas A.
Abstract:: The influence of fertilization on disease severity is unknown in most forest pathosystems. Fertilization treatments were randomly applied to 0.01 ha plots centered on individual dominant or co-dominant Douglas-fir trees in ten Douglas-fir stands from coastal Oregon to the foothills of the Oregon Cascade Range, USA. This region is affected...
Resource Type:: Article
Full Text:: . Mulvey ⇑, David C. Shaw, Douglas A. Maguire Department of Forest Engineering, Resources and Management

Douglas-fir soil C and N properties a decade after termination of urea fertilization

Creator:: Homann, Peter S., Caldwell, Bruce A., Chappell, H. N., Sollins, Phillip, and Swanston, Chris W.
Abstract:: Chemical and microbial soil properties were assessed in paired unfertilized and urea fertilized (>89 g N·m–2) plots in 13 second-growth Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) stands distributed throughout western Washington and Oregon. A decade following the termination of fertilization, fertilized plots averaged 28% higher total N in the O layer...
Resource Type:: Article
Full Text:: forest-management practices that change soil C stores (Johnson 1992a), which may be important in terres

Density, ages, and growth rates in old-growth and young-growth forests in coastal Oregon

Creator:: Tappeiner, John C., Huffman, David W. (William), 1962-, Marshall, David, Spies, Thomas A., and Bailey, John D.
Abstract:: We studied the ages and diameter growth rates of trees in former Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) old-growth stands on 10 sites and compared them with young-growth stands (50-70 years old, regenerated after timber harvest) in the Coast Range of western Oregon. The diameters and diameter growth rates for the...
Resource Type:: Article
Full Text:: in coastal Oregon1 John C. Tappeiner, David Huffman, David Marshall, Thomas A. Spies, and John D

Equations for predicting diameter and squared diameter inside bark at breast height for six major conifers of southwest Oregon

Creator:: Larsen, David R. (David Rolf), Hann, David W., and Oregon State University. Forest Research Laboratory
Resource Type:: Technical Report
Full Text:: Oregon David R. Larsen David W. Hann Abstract Equations for predicting breast- height diameter and

Focus on forestry ; vol. 9, no. 3 (Fall 1996)

Creator:: Oregon State University. College of Forestry
Abstract:: Magazine of the OSU College of Forestry.
Resource Type:: Other
Full Text:: McClenaghan Edwards.Capt David Seelye Eliason, Marie C Embrey, Meredith C Embrey, Col Ralph C Emert

Focus on forestry ; vol. 8, no. 3 (Fall 1995)

Creator:: Oregon State University. College of Forestry
Abstract:: Magazine of the OSU College of Forestry.
Resource Type:: Other
Full Text:: Corporation Johnson; Norman E Johnson; Nancy Jo Jordan; David C Josephson Living Trust Kallander; Harry R

Focus on forestry ; Spring 2002

Creator:: Oregon State University. College of Forestry
Abstract:: Magazine of the OSU College of Forestry.
Resource Type:: Other
Full Text:: assistant David Stauth and Rober.t Hood Contributing wrirers Gretchen Bracher Graphic designer

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:: $13,720.49 c THE PRESIDENT'S MESSAGE During the week following Thanksgiving I had the pleasure of

Timber for Oregon's tomorrow : an analysis of reasonably possible occurrences

Creator:: Beuter, John H., Johnson, K. Norman, Scheurman, H. Lynn, and Oregon State University. Forest Research Laboratory
Resource Type:: Technical Report
Full Text:: Possible Occurrences !Icnp John H. Beuter K. Norman Johnson H. Lynn Scheurman Research Bulletin 19

Clonal expansion and seedling recruitment of Oregon grape (Berberis nervosa) in Douglas-fir (Pseudotsuga menziesii) forests: comparisons with salal (Gaultheria shallon)

Creator:: Huffman, David W. (William), 1962- and Tappeiner, John C.
Abstract:: Seedling regeneration and morphology of Oregon grape (Berberis nervosa Pursh) and salal (Gaultheria shallon Pursh) were studied in thinned and unthinned Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) stands in the central Coast Range, Oregon. Above- and below-ground growth of both species were significantly and negatively correlated with stand density. Oregon grape...
Resource Type:: Article
Full Text:: shallon)1 David W. Huffman and John C. Tappeiner II Abstract: Seedling regeneration and morphology of

Is long primary growth associated with stem sinuosity in Douglas-fir?

Creator:: Gartner, Barbara L. and Johnson, G. R.
Abstract:: Stem sinuosity is a highly visible stem-form trait in the leaders of fast-growing Douglas-fir (Pseudotsuga menziesii var. (Mirb.) Franco) trees, yet its cause is unknown. We tested the hypotheses that sinuous stems have longer expanses of primary growth than nonsinuous stems (putting the leader at higher risk curvature, induction of...
Resource Type:: Article
Full Text:: in Douglas-fir? Barbara L. Gartner and G.R. Johnson Abstract: Stem sinuosity is a highly visible

The Public’s Perception of Fire Prevention and Communication in the Tonto National Forest

Creator:: Lindley, David
Abstract:: As the frequency and intensity of wildfires continue to occur in the West, so does the need for measures intended to improve firefighter safety; public safety; and the protection of property, resources, and wildlife. Furthermore, as human activity in the expanding Wildland Urban Interface increases, so does the need for...
Resource Type:: Capstone Project
Full Text:: Communication in the Tonto National Forest by David Lindley A PROJECT

Does wildfire likelihood increase following insect outbreaks in conifer forests?

Creator:: Meigs, Garrett W., Campbell, John L., Zald, Harold S. J., Bailey, John D., Shaw, David C., and Kennedy, Robert E.
Abstract:: Although there is acute concern that insect-caused tree mortality increases the likelihood or severity of subsequent wildfire, previous studies have been mixed, with findings typically based on stand-scale simulations or individual events. This study investigates landscape- and regional-scale wildfire likelihood following outbreaks of the two most prevalent native insect pests...
Resource Type:: Article
Full Text:: ,1 JOHN D. BAILEY,1 DAVID C. SHAW,1 AND ROBERT E. KENNEDY1,2 1College of Forestry, Oregon State

Does wildfire likelihood increase following insect outbreaks in conifer forests?

Creator:: Meigs, Garrett W., Campbell, John L., Zald, Harold S. J., Bailey, John D., Shaw, David C., and Kennedy, Robert E.
Abstract:: Although there is acute concern that insect‐caused tree mortality increases the likelihood or severity of subsequent wildfire, previous studies have been mixed, with findings typically based on stand‐scale simulations or individual events. This study investigates landscape‐ and regional‐scale wildfire likelihood following outbreaks of the two most prevalent native insect pests...
Resource Type:: Article
Full Text:: . J. ZALD,1 JOHN D. BAILEY,1 DAVID C. SHAW,1 AND ROBERT E. KENNEDY1,2 1College of Forestry, Oregon

Does wildfire likelihood increase following insect outbreaks in conifer forests?

Creator:: Meigs, Garrett W., Campbell, John L., Zald, Harold S. J., Bailey, John D., Shaw, David C., and Kennedy, Robert E.
Abstract:: Although there is acute concern that insect‐caused tree mortality increases the likelihood or severity of subsequent wildfire, previous studies have been mixed, with findings typically based on stand‐scale simulations or individual events. This study investigates landscape‐ and regional‐scale wildfire likelihood following outbreaks of the two most prevalent native insect pests...
Resource Type:: Article
Full Text:: . J. ZALD,1 JOHN D. BAILEY,1 DAVID C. SHAW,1 AND ROBERT E. KENNEDY1,2 1College of Forestry, Oregon

Incorporation of nitrogen from decomposing red alder leaves into plants and soil of a recent clearcut in Oregon

Creator:: Swanston, Christopher W. and Myrold, David Douglas
Abstract:: Nitrogen incorporation from red alder (Alnus rubra Bong.) into an Oregon upland mesic forest soil was studied by tracing the fate of 15N added as 15N-labeled alder leaf litter. The recovery of 15N in vegetation, litter, light- and heavy-fractions of the soil, the chloroform-labile (microbial biomass) pool, and the whole...
Resource Type:: Article
Full Text:: plants and soil of a recent clearcut in Oregon1 Christopher W. Swanston and David D. Myrold Abstract

Sustainable forestry: perspectives for the Pacific Northwest

Creator:: Oregon State University. College of Forestry, Squire, Ross O., Lee, Robert G., Johnson, Norman E., and Koch, Niels Elers
Resource Type:: Conference Proceeding

Economic and environmental aspects of biomass energy in the southern Oregon coastal zone : final report

Creator:: Oregon State University and Perry, David A., 1938-
Resource Type:: Technical Report
Full Text:: Modeling Oregon Department of Energy David A. Perry 1 Robert Soderberg1 James Funck2 Robert Avery3

Evaluation of nonspatial approaches and equation forms used to predict tree crown recession

Creator:: Hann, David W. and Hanus, Mark L.
Abstract:: Two nonspatial approaches for modeling tree crown recession (ΔHCB) were evaluated by using 5341 observations from Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco). The first approach applies a static height-to-crown-base (HCB) equation at the start and end of the growth period and uses the difference in these predictions as an estimate of...
Resource Type:: Article
Full Text:: predict tree crown recession David W. Hann and Mark L. Hanus Abstract: Two nonspatial approaches for

Equations for predicting height-to-crown-base, 5-year diameter-growth rate, 5-year height-growth rate, 5-year mortality rate, and maximum size-density trajectory for Douglas-fir and western hemlock in the coastal region of the Pacific Northwest

Creator:: Hann, David W., Marshall, David D., Hanus, Mark L., and Oregon State University. Forest Research Laboratory
Abstract:: Using existing permanent research plot data, we developed equations for predicting height-to-crown-base (HCB), 5-yr diametergrowth rate (delta D), 5-yr height-growth rate (delta H), 5-yr mortality rate (PM), and the maximum size-density trajectory for Douglasfir and western hemlock in the coastal region of the Pacific Northwest. With the exception of the...
Resource Type:: Technical Report
Full Text:: RC 36 cov J u n e 2 0 0 3 R e s e a r c h C o n t r

Salmonberry and salal annual aerial stem production: the maintenance of shrub cover in forest stands

Creator:: Tappeiner, John C., Zasada, John C., Huffman, David W. (William), 1962-, and Ganio, Lisa M.
Abstract:: Annual sprouting of aerial stems and ramets enables populations of salmonberry (Rubus spectabilis Pursh), salal (Gaultheria shallon Pursh), and probably other forest shrubs to maintain dense covers (>20 000 stems/ha). We studied annual stem production of salmonberry on cut (all stems cut within 15 cm of the ground) and uncut...
Resource Type:: Article
Full Text:: production: the maintenance of shrub cover in forest stands1 John C. Tappeiner, II, John C. Zasada, David W

Methods for evaluating crown area profiles of forest stands

Creator:: Dubrasich, Michael E., Hann, David W., and Tappeiner, John C., II
Abstract:: Canopy architectures of five structurally complex forest stands and three structurally simple forest stands in southwest Oregon and the Willamette Valley, Oregon, were evaluated and quantified through crown area profiles. Mixed conifer and mixed conifer-hardwood stands across a range of sites were sampled for crown widths and heights. Crown width...
Resource Type:: Article
Full Text:: . Dubrasich, David W. Hann, and John C. Tappeiner II Abstract: Canopy architectures of five structurally

Boilers fired with wood and bark residues

Creator:: Junge, David C. and Oregon State University. Forest Research Laboratory
Resource Type:: Technical Report
Full Text:: cooperation with Plywood Research Foundation BOILERS FIRED WITH WOOD AND BARK RESIDUES David C. Junge

Focus on forestry ; vol. 10, no. 1 (Winter 1997)

Creator:: Oregon State University. College of Forestry
Abstract:: Focus on Forestry is published three times each year (Fall, Winter, Spring) by the College of Forestry, Oregon State University. Our goal is to keep Forestry alumni and friends informed about the College of Forestry and its many activities and programs.
Resource Type:: Other
Full Text:: the forests of eastern Oregon. The study panel was chaired by Norm Johnson of our faculty. Results

Effect of growth ring orientation and placement of earlywood and latewood on moe and mor of very-small clear Douglas-fir beams

Creator:: Grotta, A. T., Leichti, R. J., Gartner, Barbara L., and Johnson, G. R.
Abstract:: ASTM standard sizes for bending tests (either 50 × 50 mm or 25 × 25 mm in cross-section) are not always suitable for research purposes that characterize smaller sections of wood. Moreover, the ASTM standards specify loading the sample on the longitudinal-tangential surface. If specimens are small enough, then the...
Resource Type:: Article
Full Text:: , OR 97331 and G. R. Johnson Research Geneticist USDA Forest Service Pacific Northwest Research

Conservation Plans for the Northern Spotted Owl in Oregon: The Economic Implications of Changing Timber Availability

Creator:: Greber, Brian J., Johnson, K. Norman, and Lettman, Gary
Abstract:: Recently released national forest plans and conservation plans for the protection of the northern spotted owl all call for a change in management direction on public forest lands in Oregon. The result will be a substantial reduction in public timber harvests in the state. This report summarizes how the conservation...
Resource Type:: Technical Report
Full Text:: . Norman Johnson Gary Lettman Forest Research Laboratory College of Forestry Oregon State University

Impact of the foliar pathogen Swiss needle cast on wood quality of Douglas-fir

Creator:: Johnson, G. R., Grotta, Amy T., Gartner, Barbara L., and Downes, Geoff
Abstract:: Many stands of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) near coastal areas of Oregon and Washington are heavily infected with the foliar pathogen causing Swiss needle cast (SNC) disease, and yet there is very little research on the resulting wood quality. Modulus of elasticity (MOE), modulus of rupture (MOR), microfibril angle...
Resource Type:: Article
Full Text:: on wood quality of Douglas-fir G.R. Johnson, Amy T. Grotta, Barbara L. Gartner, and Geoff Downes

Conservation plans for the northern spotted owl and other forest management proposals in Oregon : the economics of changing timber availability

Creator:: Greber, Brian J., Johnson, K. Norman, and Lettman, Gary
Abstract:: The goal of this study is to analyze how the ISC Conservation Strategy may influence Oregon's timber availability and economy in the context of overall changes in public land management. Two themes are important: first, how the state's future will differ from today and second, how the state's future will...
Resource Type:: Technical Report
Full Text:: Brian J. Greber K. Norman Johnson Gary Lettman Forest Research Laboratory College of Forestry Oregon

An Illustrated Guide to Fire in Central Oregon Forests

Creator:: Eckert, Bradley E., Walstad, John D., and Tappeiner, J. C. (John C.)
Abstract:: This pictorial guide is primarily intended to serve as a backdrop for field tours of central Oregon that involve topics surrounding wildland fire. It also is designed to provide an overview of the role of fire in the major ecosystems characteristic of this region. Topics covered include fire history, fire...
Resource Type:: Technical Report
Full Text:: Illustrated Guide to Fire in Central Oregon Forests Bradley E. Eckert, John D. Walstad and John C

Oregon's forestry outlook: an uncertain future

Creator:: Oregon State University. College of Forestry, Plochmann, Richard, Flora, Donald F., Mitchell, John W., Sessions, John, Beuter, John, Greber, Brian, Johnson, K. Norman, and Lettman, Gary
Abstract:: The theme for the 1989 Starker Lectures concerned uncertainty surrounding forests and forestry in Oregon and the Pacific Northwest. It was a timely theme. Indeed, the uncertainties concerning trade-offs among commodity production and environment and the allocation of forest land, especially public lands, loom large as we enter the decade...
Resource Type:: Conference Proceeding
Full Text:: John Sessions, Brian Greber, and Norm Johnson (also advisor to Gover- nor Goldschmidt), John Beuter

Nonlinear equations for predicting diameter and squared diameter inside bark at breast height for Douglas-fir

Creator:: Ritchie, Martin W., Hann, David W., and Oregon State University. Forest Research Laboratory
Resource Type:: Technical Report
Full Text:: -fir Martin W. Ritchie David W. Hann FOREn REIEARCH LAB College of Forestry Oregon State University

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:: , Barbara L. Gartner, and David D. Marshall Abstract: Breast-high stem sections were sampled from 56

Mortality equations for individual trees in the mixed-conifer zone of southwest Oregon

Creator:: Hann, David W., Wang, Chao-huan, and Oregon State University. Forest Research Laboratory
Abstract:: Models of stand growth and yield must include an estimate of mortality. For individual-tree/distance-independent growth-and-yield models. it is necessary (1) to predict the probability of death of individual trees and (2) to keep stand projections within reasonable biological limits (e.g., the maximum basal area that the stand can achieve). In...
Resource Type:: Technical Report
Full Text:: Mortality Equations for Individual Trees in the Mixed-Conifer Zone of Southwest Oregon David W. Hann Chao

Effect of wetting on performance of small-scale shear walls

Creator:: King, David T., Sinha, Arijit, and Morrell, Jeffrey J.
Abstract:: Wood shear walls are the main lateral force-resisting system for wood-frame construction. Water intrusion and subsequent decay around connections can significantly impact shear wall behavior, but these problems are seldom studied. In this study, effects of water intrusion and fungal attack on shear wall capacity were examined using small-scale (610-...
Resource Type:: Article
Full Text:: SHEAR WALLS David T. King Former Graduate Research Assistant E-mail: mrdtking@gmail.com Arijit Sinha

Extending southwest Oregon's Douglas-fir dominant height growth equation to older ages

Creator:: Hann, David W. and Oregon State University. Forest Research Laboratory
Abstract:: Hann and Scrivani (1987) developed dominant height growth equations for Douglas- fir in southwest Oregon using stem analysis data sets with an upper age of approximately 125 years at breast height. The objective of this study was to determine whether these equations could be extrapolated for ages of 250 years...
Resource Type:: Technical Report
Full Text:: David W. Hann Research Contribution 18 March 1998 The Forest Research Laboratory of Oregon State

A key to the literature presenting site-index and dominant-height-growth curves and equations for species in the Pacific Northwest and California

Creator:: Hann, David W. and Oregon State University. Forest Research Laboratory
Abstract:: Summaries from 49 published articles on site-index and dominant-height growth curves and equations are presented for 20 tree species or species groups found in California, Oregon, Washington, British Columbia, southeastern Alaska, Idaho, and western Montana. The summaries are organized by species. Each summary describes the modeling approach, type of curves/equations,...
Resource Type:: Technical Report
Full Text:: FOR SPECIES IN THE PACIFIC NORTHWEST AND CALIFORNIA by David W. Hann Research Contribution 7 March

Wolf, Elk, and Aspen Food Web Relationships: Context and Complexity

Creator:: Eisenberg, Cristina, Seager, S. Trent, and Hibbs, David E.
Abstract:: Like most ecological communities, aspen (Populus tremuloides) forests are influenced by a synergy of bottom-up (resources-driven) and top-down (predator-driven) processes. Since the 1920s, ecologists have observed the decline of many aspen communities throughout the Intermountain West. The extent and possible drivers of this decline are topics of much recent scientific...
Resource Type:: Article
Full Text:: , USA Ph: (541) 913-3998 e-mail: trent.seager@oregonstate.edu David E. Hibbs Department of

Invertebrates of the H.J. Andrews Experimental Forest, western Cascade Mountains, Oregon : a survey of arthropods associated with the canopy of old-growth Pseudotsuga menziesii

Creator:: Oregon State University. Forest Research Laboratory and Voegtlin, David J.
Resource Type:: Technical Report
Full Text:: David J. Voegtlin Is Assistant Taxonomist at the Illinois Natural History Survey, Champaign, illinois

Effects of height imputation strategies on stand volume estimation

Creator:: Garber, Sean M., Temesgen, Hailemariam, Monleon, Vicente J., and Harm, David W.
Abstract:: Subsampling and subsequent imputation of tree heights can improve the predictive performance of stand volume estimation but may also introduce biases. Using coastal Douglas-fir data from southwest Oregon, USA, the predictive performance of several height imputation strategies for estimating stand volume was evaluated. A subsample of 1-15 trees was randomly...
Resource Type:: Article
Full Text:: , Vicente J. Monleon, and David W. Harm Abstract: Subsampling and subsequent imputation of tree heights can

A key to the literature presenting tree volume and taper equations for species in the Pacific Northwest and California

Creator:: Hann, David W. and Oregon State University. Forest Research Laboratory
Abstract:: Summaries from 49 published articles on tree volume and taper equations are presented for 39 tree species found in California, Oregon, Washington, British Columbia, southeast Alaska, Idaho, and western Montana. The summaries are organized by species and then by type of equation (volume or taper). Each summary describes the types...
Resource Type:: Technical Report
Full Text:: northwest And cALiforniA by David W. Hann Research Contribution 6 March 1994 The Forest Research

Conifer response to three silvicultural treatments in the Oregon Coast Range foothills

Creator:: Walter, Scott T. and Maguire, Chris C.
Abstract:: This study assessed growth, condition, and mortality of residual trees one decade after harvest across three silvicultural treatments in thirty 85- to 125-year-old Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) stands in the Oregon Coast Range foothills. Group-selection cuts had 33% of the entire stand volume extracted as patches approximately 0.2–0.8 ha...
Resource Type:: Article
Full Text:: Coast Range foothills Scott T. Walter and Chris C. Maguire Abstract: This study assessed growth

Silviculture and Swiss needle cast : research and recommendations

Creator:: Filip, Gregory M., Kanaskie, Alan, Kavanagh, Kathleen L., 1955-, Johnson, Greg, Johnson, Randy (G. Randy), Maguire, Douglas A. (Douglas Alan), and Oregon State University. Forest Research Laboratory
Abstract:: For the past ten years, Douglas-fir on the Oregon and Washington coast has shown a progressive decrease in height and diameter increment as a result of Swiss needle cast, which is caused by Phaeocryptopus gaeumannii. In this contribution, we discuss the effects of silvicultural operations on Swiss needle cast and...
Resource Type:: Technical Report
Full Text:: RECOMMENDATIONS by Gregory Filip Alan Kanaskie Kathleen Kavanagh Greg Johnson Randy Johnson Douglas Maguire

Forest Measurement and Biometrics in Forest Management: Status and Future Needs of the Pacific Northwest USA

Creator:: Temesgen, Hailemariam, Goerndt, Michael E., Johnson, Greg P., Adams, Darius M., and Monserud, Robert A.
Abstract:: Forest measurement and biometrics (FMB) programs have been at the heart of forestry education in North America since its beginnings at the Biltmore Forest School more than 100 years ago. Over the intervening period, the field of forestry has changed in critical ways. There are many forest management and policy...
Resource Type:: Article
Full Text:: . Johnson, Darius M. Adams, and Robert A. Monserud Forest measurement and biometrics (FMB) programs have

Focus on forestry ; vol. 3, no. 3 (Fall 1990)

Creator:: Oregon State University. College of Forestry
Abstract:: Focus on Forestry is published three times each year (Fall, Winter, Spring) by the College of Forestry, Oregon State University.
Resource Type:: Other
Full Text:: . John E. LeTourneux '38 Mr. David G. Christenson '61 Mr. David C. Jordan '84 Mr. Merle S. Lowden '32 Mr

Taper equations for six conifer species in southwest Oregon

Creator:: Walters, David K., Hann, David W., and Oregon State University. Forest Research Laboratory
Resource Type:: Technical Report
Full Text:: YIIIIUII August 1986 12 0005220070 )U 'IONS FOR SIX CONIFER SPECIES IN SUTH EST OREGON David K. Walters

Height-diameter equations for six species in the coastal regions of the Pacific Northwest

Creator:: Hanus, Mark L., Marshall, David D., and Hann, David W.
Abstract:: Three equations for predicting tree height as a function of diameter (outside bark) at breast height are presented for six species found in coastal regions of the Pacific Northwest. Foresters can use these “height–diameter” equations to avoid the time-consuming task of measuring heights of all individual trees in an inventory,...
Resource Type:: Technical Report
Full Text:: SPECIES IN THE COASTAL REGIONS OF THE PACIFIC NORTHWEST by Mark L Hanus David D Marshall David W Hann

Diameter growth equations for fourteen tree species in Southwest Oregon

Creator:: Hann, David W., Larsen, David R., and Oregon State University. Forest Research Laboratory
Abstract:: Equations are presented that predict individual-tree 5-year diameter growth, outside bark, for 14 tree species in southwest Oregon. The data used to develop the equations came from 19,245 trees sampled from 391 stands in the study area. These equations express diameter growth as a function of diameter at breast height,...
Resource Type:: Technical Report
Full Text:: Diameter Growth Equations for Fourteen Tree Species in Southwest Oregon David W. Hann David R. Larsen

Predicting merchantable volume in cubic feet to a variable top and in Scribner board feet to a 6-inch top for six major conifers of southwest Oregon

Creator:: Walters, David K., Hann, David W., and Oregon State University. Forest Research Laboratory
Resource Type:: Technical Report
Full Text:: Six Major Conifers of Southwest Oregon David K. Walters David W. Hann College of Forestry Oregon

Height-diameter equations for seventeen tree species in southwest Oregon

Creator:: Larsen, David R., Hann, David W., and Oregon State University. Forest Research Laboratory
Abstract:: Equations for predicting total height as a function of diameter at breast height are presented for 17 tree species from southwest Oregon. Because basal area and site index often influence tree height, additional equations are presented which may include either or both of these as independent variables. Equation coefficients were...
Resource Type:: Technical Report
Full Text:: issue Does not circulate HEIGHT-DIAMETER EQUATIONS FOR SEVENTEEN TREE SPECIES IN SOUTHWEST OREGON David

Trends in stream nitrogen concentrations for forested reference catchments across the USA

Creator:: Argerich, A., Johnson, S. L., Sebestyen, S. D., Rhoades, C. C., Greathouse, E., Knoepp, J. D., Adams, M. B., Likens, G. E., Campbell, J. L., McDowell, W. H., Scatena, F. N., and Ice, G. G.
Abstract:: To examine whether stream nitrogen concentrations in forested reference catchments have changed over time and if patterns were consistent across the USA, we synthesized up to 44 yr of data collected from 22 catchments at seven USDA Forest Service Experimental Forests. Trends in stream nitrogen presented high spatial variability both...
Resource Type:: Article

A key to the literature on forest growth and yield in the Pacific Northwest, 1910-1981

Creator:: Hann, David W., Riitters, K. H. (Kurt H.), and Oregon State University. Forest Research Laboratory
Abstract:: Tables are presented that summarize 108 published articles on forest growth and yield in the Pacific Northwest. Each table describes the form of the information presented, the species to which the information is applicable, the data sources used to develop the information, the data needed to predict growth and yield,...
Resource Type:: Technical Report
Full Text:: discusses a long, complex study or summarizes available information on a topic. The Authors David W. Hann

Models of presence-absence estimate abundance as well as (or even better than) models of abundance: the case of the butterfly Parnassius apollo

Creator:: Gutiérrez, David, Harcourt, Jennifer, Díez, Sonia B., Gutiérrez Illán, Javier, and Wilson, Robert J.
Abstract:: Models relating species distribution records to environmental variables are increasingly applied to biodiversity conservation. Such techniques could be valuable to predict the distribution, abundance or habitat requirements of species that are rare or otherwise difficult to survey. However, despite widely-documented positive intraspecific relationships between occupancy and abundance, few studies have...
Resource Type:: Article
Full Text:: case of the butterfly Parnassius apollo David Gutiérrez · Jennifer Harcourt · Sonia B. Díez

Models of presence-absence estimate abundance as well as (or even better than) models of abundance: the case of the butterfly Parnassius apollo

Creator:: Gutiérrez, David, Harcourt, Jennifer, Díez, Sonia B., Gutiérrez Illán, Javier, and Wilson, Robert J.
Abstract:: Models relating species distribution records to environmental variables are increasingly applied to biodiversity conservation. Such techniques could be valuable to predict the distribution, abundance or habitat requirements of species that are rare or otherwise difficult to survey. However, despite widely-documented positive intraspecific relationships between occupancy and abundance, few studies have...
Resource Type:: Article
Full Text:: case of the butterfly Parnassius apollo David Gutiérrez · Jennifer Harcourt · Sonia B. Díez

Diversity and productivity of hypogeous fungal sporocarps in a variably thinned Douglas-fir forest

Creator:: Colgan, Wesley, Carey, Andrew B., Trappe, James M., Molina, Randy, and Thysell, David
Abstract:: Although ecosystem management techniques are designed to enhance species diversity in managed forests, no comprehensive study has been conducted to evaluate effects of such techniques on diversity and productivity of hypogeous fungi (truffles). During this study, truffles were collected in a 55- to 65-year-old Douglas-fir forest from March 1993 through...
Resource Type:: Article
Full Text:: Molina, and David Thysell Abstract: Although ecosystem management techniques are designed to enhance

Red alder : guidelines for successful regeneration

Creator:: Oregon State University. Forest Research Laboratory, Ahrens, Glenn R., Dobkowski, Alexander, and Hubbs, David E.
Resource Type:: Other
Full Text:: OR AOUUO3O6IOE6 HEO/F76/ 31 Publication 24 2 .4Sp3 :24 c.3

Focus on forestry ; vol. 19, no. 2 (Spring 2006)

Creator:: Oregon State University. College of Forestry
Abstract:: Focus on Forestry is published by Oregon State University College of Forestry. Our goal is to keep Forestry alumni, friends, faculty, staff, and students informed about the College of Forestry and its many activities and programs.
Resource Type:: Other
Full Text:: , David Stauth, Bryan Bernart Designer Sandra Arbogast Photography Forestry Communications

Genetics of cold hardiness in a cloned full-sib family of coastal Douglas-fir

Creator:: Anekonda, T. S., Adams, W. T., Aitken, S. N., Neale, David B., Jermstad, K. D., and Wheeler, N. C.
Abstract:: Variation in cold-hardiness traits, and their extent of genetic control and interrelationships, were investigated among individuals (clones) within a single large full-sib family of coastal Douglas-fir (Pseudotsuga menziesii var. menziesii (Mirb.) Franco) from Oregon. Cold injury to needle, stem, and bud tissues was evaluated in fall 1996 and spring 1997...
Resource Type:: Article
Full Text:: preliminary tests to inflict a range of injury scores, from high to low (–9 to –15°C in fall, –12 to –18°C in

Comparative hydraulic architecture of tropical tree species representing a range of successional stages and wood density

Creator:: McCulloh, Katherine A., Meinzer, Frederick C., Sperry, John S., Lachenbruch, Barbara, Voelker, Steven L., Woodruff, David R., and Domec, Jean-Christophe
Abstract:: Plant hydraulic architecture (PHA) has been linked to water transport sufficiency, photosynthetic rates, growth form and attendant carbon allocation. Despite its influence on traits central to conferring an overall competitive advantage in a given environment, few studies have examined whether key aspects of PHA are indicative of successional stage, especially...
Resource Type:: Article

Focus on forestry ; Winter 2003

Creator:: Oregon State University. College of Forestry
Abstract:: Magazine of the OSU College of Forestry.
Resource Type:: Other
Full Text:: Hood .David Stauth MclryWells Contriburine wmer. Sandie Arbogast Gretchen Bracher Graphic ·.~it

Focus on forestry ; vol. 11, no. 2 (Spring 1998)

Creator:: Oregon State University. College of Forestry, Brown, George, and Wells, Gail
Abstract:: Focus on Forestry is published three times each year (Fall, Winter, Spring) by the Oregon State University College of Forestry. Our goal is to keep Forestry alumni and friends informed about the College of Forestry and its many activities and programs.
Resource Type:: Other
Full Text:: Fernhopper Day! College of Forestry George W. Brown Dean Lisa C. Mattes Director of Development

First-year performance of 1-0 containerized Douglas-fir seedlings on droughty sites in southwestern Oregon

Creator:: Hobbs, Stephen D., Oregon State University. Forest Research Laboratory, Byars, R. H ., Henneman, D. C., and Frost, C. R.
Abstract:: The effects of artificial shading and aspect on the performance of 1-0 container-grown Douglas-fir seedlings were evaluated 1 year after outplanting on four different aspects in southwest Oregon. The test areas, all characterized by steep slopes and shallow, skeletal soils with a surface mantle of loose rock and logging slash,...
Resource Type:: Technical Report
Full Text:: district silviculturist and David C. Hennemen is assistant district silviculturist for the Medford District

Height-diameter equations for sixteen tree species in the central western Willamette Valley of Oregon

Creator:: Wang, Chao-huan and Hann, David W.
Abstract:: Equations for predicting tree height as a function of diameter outside bark at breast height are presented for 16 tree species from the central western Willamette Valley of Oregon. Foresters can use these "height-diameter" equations to avoid the time consuming task of measuring heights of all individual trees in an...
Resource Type:: Technical Report
Full Text:: Willamette Valley of Oregon Chao-Huan Wang David W. Hann FOREIf REIEARCH LAS College of Forestry Oregon

Predicting height to crown base for undamaged and damaged trees in southwest Oregon

Creator:: Hanus, Mark L., Hann, David W., Marshall, David D., and Oregon State University. Forest Research Laboratory
Abstract:: Equations for predicting height to crown base are presented for tree species from southwest Oregon. Equations for undamaged and damaged trees were estimated with weighted nonlinear regression techniques. The effects of specific damaging agents on the height to crown base were explored, and damage correction factors were estimated. The damage...
Resource Type:: Technical Report
Full Text:: DAMAGED TREES IN SOUTHWEST OREGON by Mark L Hanus David W Hann David D Marshall A p r i l 2 0 0 0

Innovativeness in the global forest products industry: Exploring new insights

Creator:: Hansen, Eric, Juslin, Heikki, and Knowles, Christopher David
Abstract:: Innovativeness is a concept that has seen extensive study, yet there remain significant gaps in our understanding of the phenomenon. This is especially true when considering views of practitioners as well as specific industry sectors, such as the forest products industry. The qualitative work described here explores the concept of...
Resource Type:: Article
Full Text:: site at cjfr.nrc.ca on 30 August 2007. E. Hansen1 and C. Knowles. Department of Wood Science and

Rangeland Privatization and the Maasai Experience: Social Capital and the Implications for Traditional Resource Management in Southern Kenya

Creator:: Sundstrom, Shiloh, Tynon, Joanne F., and Western, David
Abstract:: Using qualitative research methods we examined how group ranch privatization and settlement of individual Maasai households across the landscape have affected traditional livestock herding and social capital mechanisms of Maasai livestock herders. This process has altered decision-making processes, social networks, and cooperation of Maasai herders and limited access to water...
Resource Type:: Article
Full Text:: 541.737.1499 FAX 541.737.3049 David Western African Conservation Centre Nairobi, Kenya Abstract

Evaluation of individual-tree and disaggregative prediction methods for Douglas-fir stands in western Oregon

Creator:: Ritchie, Martin W. and Hann, David W.
Abstract:: The efficiency of six disaggregative methods and two individual-tree methods was evaluated in terms of their ability to predict 5-year basal area increment for Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) stands in western Oregon. Models were developed for predicting gross stand basal-area increment and individual-tree diameter increment. In addition, models were...
Resource Type:: Article
Full Text:: Douglas-fir stands in western Oregon1 Martin W. Ritchie and David W. Hann Abstract: The efficiency of

Equations and tables predicting gross total stem volumes in cubic feet for six major conifers of southwest Oregon

Creator:: Hann, David W., Walters, David K., Clyde, Merlise A., and Oregon State University. Forest Research Laboratory
Abstract:: Equations and tables predicting gross total stem volumes in cubic feet are presented for Douglas-fir, grand fir, white fir, ponderosa pine, sugar pine, and incense-cedar. The data were gathered in second-growth, mixed-conifer stands of southwest Oregon. The basic equations use diameter outside bark at breast height and total tree height...
Resource Type:: Technical Report
Full Text:: Oregon David K. Walters David W. Hann Merlise A. Clyde College ofForestry Oregon State University c

Reanalysis of the SMC-ORGANON equations for diameter-growth rate, height-growth rate, and mortality rate of Douglas-fir

Creator:: Hann, David W., Marshall, David D., Hanus, Mark L., and Oregon State University. Forest Research Laboratory
Abstract:: Using existing data from untreated research plots, we developed equations for predicting 5-yr diameter-growth rate (ΔD₅), 5-yr height-growth rate (ΔH₅), and 5-yr mortality rate (PM₅) for Douglas-fir [Pseudotsuga menziesii (Mirb.) Franco] in the coastal region of the Pacific Northwest. These equations are revisions of the equations constructed in 1995–1997 for...
Resource Type:: Technical Report
Full Text:: N o v e m b e r 2 0 0 6 R e s e a r c h C o n t r i b u t

Effects of stand density on the growth of young Douglas-fir trees

Creator:: Woodruff, David R., Bond, Barbara J., Ritchie, Gary A., and Scott, William
Abstract:: The objectives of this study were (i) to provide further evidence of a positive correlation of stand density with early growth of coastal Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco var. menziesii); (ii) to determine when after planting the positive growth response occurs and how long it lasts; and (iii) to use...
Resource Type:: Article
Full Text:: Douglas-fir trees David R. Woodruff, Barbara J. Bond, Gary A. Ritchie, and William Scott Abstract: The

College of Forestry Integrated Research Project : ecological and socioeconomic responses to alternative silvicultural treatments

Creator:: Maguire, Chris C., Chambers, Carol L., and Oregon State University. Forest Research Laboratory
Abstract:: The College of Forestry Integrated Research Project (CFIRP) is an on-going experiment in the eastern Coast Range foothills of western Oregon. Started in 1989, a team of scientists, resource managers, and students at Oregon State University designed and implemented silvicultural alternatives to clearcutting. These silvicultural practices aimed to create and...
Resource Type:: Technical Report
Full Text:: edited by Chris C Maguire and Carol L Chambers WITH GIS SUPPORT BY DEBORA L JOHNSON AND CARTOGRAPHY BY

Developing a production possibility set of wildlife species persistence and timber harvest value

Creator:: Calkin, David E., Montgomery, Claire A., Schumaker, Nathan H., Polasky, Stephen, Arthur, Jeffrey L., and Nalle, Darek J.
Abstract:: An integrated model, combining spatial wildlife population and timber harvest and growth models, was developed to explore tradeoffs between the likelihood of persistence of a wildlife species, the northern flying squirrel (Glaucomys sabrinus), and timber production on a landscape on the west side of the Oregon Cascade Range. A simplified...
Resource Type:: Article
Full Text:: persistence and timber harvest value1 David E. Calkin, Claire A. Montgomery, Nathan H. Schumaker, Stephen

Exploring the Relationship Between Human Disturbance and Wildlife Behavior in Protected Areas

Creator:: St. John, Alyssa
Abstract:: Wildlife behavior is a common research topic in conservation studies; however, the relationship between wildlife behavior and human disturbance, specifically in protected areas, is seldom studied. Previous studies have identified relationships between various different types of behaviors of both humans and wildlife, indicating correlations between avoidance behaviors, habituation, and physiological...
Resource Type:: Capstone Project
Full Text:: topic and proposal, as well as Dr. David Lewis and Dr. Christian Langpap for serving on my committee

Focus on forestry ; vol. 3, no. 2 (Spring 1990)

Creator:: Oregon State University. College of Forestry
Abstract:: Focus on Forestry is published three times each year (Fall, Winter, Spring) by the College of Forestry, Oregon State University.
Resource Type:: Other
Full Text:: model to determine what these resources are worth," says Johnson. Her students will test their

Asymmetrical effects of mesophyll conductance on fundamental photosynthetic parameters and their relationships estimated from leaf gas exchange measurements

Creator:: Sun, Ying, Gu, Lianhong, Dickinson, Robert E., Pallardy, Stephen G., Baker, John, Cao, Yonghui, Murilo DaMatta, Fábio, Dong, Xuejun, Ellsworth, David, Van Goethem, Davina, Jensen, Anna M., Law, Beverly E., Loos, Rodolfo, Vitor Martins, Samuel C., Norby, Richard J., Warren, Jeffrey, Weston, David, and Winter, Klaus
Abstract:: Worldwide measurements of nearly 130C3 species covering all major plant functional types are analysed in conjunction with model simulations to determine the effects of mesophyll conductance (gm) on photosynthetic parameters and their relationships estimated from A/Ci curves. We find that an assumption of infinite gm results in up to 75%...
Resource Type:: Article

Management of non-industrial private forest lands : survey results from western Oregon and Washington owners

Creator:: Johnson, Rebecca L., 1955-, Alig, Ralph J., Kline, J. D., Moulton, Robert J. (Robert James), Rickenbach, Mark G., 1968-, and Oregon State University. Forest Research Laboratory
Abstract:: Oregon State University researchers conducted a survey in 1994 of non-industrial private forest (NIPF) landowners in western Oregon and western Washington. Private forests provide valuable ecological services, such as fish and wildlife habitat, and are also partially filling the gap created by recent reductions in federal timber harvest in the...
Resource Type:: Technical Report
Full Text:: OREGON AND WASHINGTON OWNERS By Rebecca L Johnson Ralph Alig Jeffrey Kline Robert Moulton Mark

Focus on forestry ; vol. 20, no. 2 (Summer 2007)

Creator:: Oregon State University. College of Forestry
Abstract:: Focus on Forestry is published by Oregon State University College of Forestry. Our goal is to keep Forestry alumni, friends, faculty, staff, and students informed about the College of Forestry and its many activities and programs.
Resource Type:: Other
Full Text:: Editorial Assistants Bryan Bernart, Carrie Breckel Writers Alison Moldenke, David Stauth, Thomas

Scheduling replacement of logging equipment : some quantitative guidelines

Creator:: Butler, David A., LeDoux, Chris B., and Oregon State University. Forest Research Laboratory
Abstract:: The authors describe a new,theoretical methodology for evaluating the replacement of a single piece of logging equipment with a predetermined new model. The example is for a specific piece of equipment and gives results unique to the data-base analyzed, but the application typifies procedures, required data, and results of the...
Resource Type:: Technical Report
Full Text:: replacement of logging equipment: some quantitative guidelines David A. Butler Chris B. LeDoux G FORE/T

Seedling protectors for preventing deer browse

Creator:: Schaap, Wieger, 1957-, DeYoe, David R., and Oregon State University. Forest Research Laboratory
Resource Type:: Technical Report
Full Text:: Preventing Deer Browse Wieger Schaap David DeYoe fl 6 College of Forestry Oregon State University The

Regional Height-Diameter Equations for Maior Tree Species of Southwest Oregon

Creator:: Temesgen, Hailemariam, Hann, David W., and Monleon, Vincente J.
Abstract:: Selected tree height and diameter functions were evaluated for their predictive abilities for major tree species of southwest Oregon. Two sets of equations were evaluated. The first set included four base equations for estimating height as a function of individual tree diameter, and the remaining 16 equations enhanced the four...
Resource Type:: Article
Full Text:: Southwest Oregon • Hailemariam Temesgenl David W. Hanni and Vincente J. Monleon Selected tree height and

Cost estimating for wood industries

Creator:: Coolidge, Lawrence David, Pfeiffer, J. R. (Jack Russell), and Oregon Forest Products Laboratory
Resource Type:: Technical Report
Full Text:: included to demonstrate cost esti- ating in determining economic feasibility of a specific wood indus- -'c

Recreation Specialization and Related Concepts in Leisure Research

Creator:: Needham, Mark D., Scott, David, and Vaske, Jerry J.
Abstract:: More than 40 years have passed since Shafer (1969) challenged the existence of the “average camper.” Recognizing that participants in recreation activities are heterogeneous in their commitments and interests, researchers have emphasized the importance of differentiating users into meaningful homogeneous subgroups. In his seminal article, Bryan (1977) coined the concept...
Resource Type:: Article
Full Text:: Leisure Research Mark D. Needham 1 David Scott 2 Jerry J. Vaske 3

Red alder : guidelines for seed collection, handling, and storage

Creator:: Oregon State University. Forest Research Laboratory, Hibbs, David E., and Ager, Alan A.
Resource Type:: Technical Report
Full Text:: Alder: Guidelines for Seed Collection, Handling, and Storage David E. Hibbs Alan A. Ager CiF HEIJ/F7//2

Equations for predicting basal area increment in Douglas-fir and grand fir

Creator:: Ritchie, Martin W., Hann, David W., and Oregon State University. Forest Research Laboratory
Resource Type:: Technical Report
Full Text:: rity, wasThe Forest Research ? a or c y of Oregon eStablistieyd' by tlig Oregon Lc g slat re to covet

Guidelines for handling seeds and seedlings to ensure vigorous stock

Creator:: Oregon State University. Forest Research Laboratory and DeYoe, David R.
Resource Type:: Technical Report
Full Text:: Stock David K. DeYoe REIEARCH LAB College of Forestry Oregon State University The Forest Research

Enhanced diameter-growth-rate equations for undamaged and damaged trees in southwest Oregon

Creator:: Hann, David W., Hanus, Mark L., and Oregon State University. Forest Research Laboratory
Abstract:: Equations for predicting the 5-yr diameter-growth rate of a tree are presented for eight conifer and nine hardwood tree species from southwest Oregon. Equation parameters for undamaged and damaged trees combined were estimated by weighted nonlinear regression. The resulting equation for Douglas-fir [Pseudotsuga menziesii (Mirb.) Franco] explained more than 71%...
Resource Type:: Technical Report
Full Text:: Untitled-2 D e c e m b e r 2 0 0 2 R e s e a r c h C o n t r

Fish and temperature data from Hinkle Creek summer 2021

Creator:: Warren, Dana, Bladon, Kevin, Roon, David, and Swartz, Allison
Abstract:: These data were all collected in summer 2021 at Hinkle Creek watershed, a headwater ecosystem in a managed forest landscape in western Oregon. The data set has two components. The first component of the data set includes information about age 1 and older fish collected from two sections of the...
Resource Type:: Dataset
Full Text:: Name: David Roon Institution: Oregon State University College, School or Department: Dept. of Forest

Enhanced mortality equations for trees in the mixed conifer zone of Southwest Oregon

Creator:: Hann, David W., Hanus, Mark L., and Oregon State University. Forest Research Laboratory
Abstract:: Equations for predicting the probability of a tree's dying in the next 5 years are presented for eight conifer and eight hardwood tree species from southwest Oregon. A logistic equation form was used to characterize the probability of mortality. The parameters of the equation were estimated using weighted, maximum likelihood...
Resource Type:: Technical Report
Full Text:: RC 34 cov N o v e m b e r 2 0 0 1 R e s e a r c h C o n

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