Index Catalog // ScholarsArchive@OSU

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

Creator:: Zhao, Junhui, Maguire, Douglas A., Mainwaring, Douglas B., Wehage, Jon, and Kanaskie, Alan
Abstract:: In coastal forests of the Pacific Northwest, young coniferous plantations typically contain a mixture of planted and natural Douglas-fir (Pseudotsuga menziesii) and western hemlock (Tsuga heterophylla). Swiss needle cast (SNC) disease inhibits the growth of Douglas-fir to varying degrees in these stands, depending on SNC severity. In addition to the...
Resource Type:: Article
Full Text:: Zhao, Douglas A. Maguire, Douglas B. Mainwaring, 7 Department of Forest Engineering, Resources and

Forest stand structure and pattern of old-growth Western Hemlock/Douglas-Fir and mixed-conifer forests

Creator:: North, Malcolm, Chen, Jiquan, Oakley, Brian, Song, Bo, Rudnicki, Mark, Gray, Andrew, and Innes, Jim
Abstract:: With fire suppression, many western forests are expected to have fewer gaps and higher stem density of shade-tolerant species as light competition becomes a more significant influence on stand pattern and composition. We compared species composition, structure, spatial pattern, and environmental factors such as light and soil moisture between two...
Resource Type:: Article
Full Text:: forests in the southern Cascade Range, USA. J. Veg. Sci. 2:189–200. VAN PELT, B., AND J.F. FRANKLIN. 2000

Multiscale Controls on Natural Regeneration Dynamics after Partial Overstory Removal in Douglas-Fir Forests in Western Oregon, USA

Creator:: Dodson, Erich K., Burton, Julia I., and Puettmann, Klaus J.
Abstract:: We examined natural regeneration following operational-scale variable density retention treatments in 40-60 year old Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) forests at seven sites for a decade following treatment. Treatments included residual overstory densities of 300, 200, and 100 trees/ha, with leave islands and gaps of three sizes (0.1, 0.2, and...
Resource Type:: Article
Full Text:: such as the development of multi-layered canopies typical of late-successional forests 3 (Franklin et

Stand conditions associated with tree regeneration in Sierran mixed-conifer forests

Creator:: Gray, Andrew N., Zald, Harold S.J., Kern, Ruth A., and North, Malcolm
Abstract:: Fire suppression has significantly increased canopy cover, litter depth, and stem density in many western forests, altering microsite conditions that affect tree seedling establishment. We conducted studies in a mixed-conifer forest in the Sierra Nevada, California, to determine relationships between established understory trees and microsite quality, and to examine the...
Resource Type:: Article
Full Text:: , Van Pelt and Franklin 2000), but below- ground resources, particularly soil moisture, are important as

Management of Riparian Buffers: Upslope Thinning with Downslope Impacts

Creator:: Ruzicka, Kenneth J., Jr., Puettmann, Klaus J., and Olson, Deanna H.
Abstract:: We examined the potential of using upslope density management to influence growth and drought tolerance of trees in untreated downslope riparian forests. Increment cores from Douglas-fir trees in three mature stands in western Oregon, USA, were collected and measured. Trees responded to an apparent edge effect up to 15 m...
Resource Type:: Article
Full Text:: for before and after treatment �B � 1 for before, Xi is the value of the continuous covariate PDSI

Prediction of Wood Fiber Attributes from LiDAR-Derived Forest Canopy Indicators

Creator:: Hilker, Thomas, Frazer, Gordon W., Coops, Nicholas C., Wulder, Michael A., Newnham, Glenn J., Stewart, James D., van Leeuwen, Martin, and Culvenor, Darius S.
Abstract:: We investigated the potential use of airborne light detection and ranging (LiDAR) data to predict key wood fiber properties from extrinsic indicators in lodgepole pine leading forest stands located in the foothills of central Alberta, Canada. Six wood fiber attributes (wood density, cell perimeter, cell coarseness, mature fiber length, microfibril...
Resource Type:: Article
Full Text:: findings of previous studies (Franklin 1995, Wilson and Gallant 2000, Lookingbill and Urban 2005, Hengl and

Estimating Canopy Cover from Standard Forest Inventory Measurements in Western Oregon

Creator:: McIntosh, Anne C.S., Gray, Andrew N., and Garman, Steven L.
Abstract:: Reliable measures of canopy cover are important in the management of public and private forests. However, direct sampling of canopy cover is both labor- and time-intensive. More efficient methods for estimating percent canopy cover could be empirically derived relationships between more readily measured stand attributes and canopy cover or, alternatively,...
Resource Type:: Article
Full Text:: , Oregon Western Cascades, Klamath Mountains, and High Cascades (Franklin and Dyrness 1973). Forest zones

Biophysical controls on soil respiration in the dominant patch types of an old-growth, mixed-conifer forest

Creator:: Ma, Siyan, Chen, Jiquan, Butnor, John R., North, Malcolm, Euskirchen, Eugenie S., and Oakley, Brian
Abstract:: Little is known about biophysical controls on soil respiration in California’s Sierra Nevada oldgrowth, mixed-conifer forests. Using portable and automated soil respiration sampling units, we measured soil respiration rate (SRR) in three dominant patch types: closed canopy (CC), ceanothus-dominated patches (CECO), and open canopy (OC). SRR varied significantly among the...
Resource Type:: Article
Full Text:: , Law et al. 2000, Royce et al. 2001a and b, Chen et al. 2002). Recent research has em- phasized the

Patterns of mortality in an old-growth mixed-forest of the southern Sierra Nevada, California

Creator:: Smith, Thomas F., Rizzo, David M., and North, Malcolm
Abstract:: Mortality patterns in an old-growth, mixed-conifer forest, in the absence of wildfire, were investigated at the Teakettle Experimental Forest from 2000 to 2002. We tested the hypothesis that after a century of fire suppression, pathogen- and insect-associated mortality (between episodic droughts) would be significantly greater on ingrowth trees (i.e., smaller-diameter,...
Resource Type:: Article
Full Text:: . (A) dead white firs, (B) all white fir stems, (C) dead trees 5–20 cm dbh, (D) all small stems 5–20 cm

Patterns of mortality in an old-growth mixed-conifer forest of the southern Sierra Nevada, California

Creator:: Smith, Thomas F., Rizzo, David M., and North, Malcolm
Abstract:: Mortality patterns in an old-growth, mixed-conifer forest, in the absence of wildfire, were investigated at the Teakettle Experimental Forest from 2000 to 2002. We tested the hypothesis that after a century of fire suppression, pathogen- and insect-associated mortality (between episodic droughts) would be significantly greater on ingrowth trees (i.e., smaller-diameter,...
Resource Type:: Article
Full Text:: . (A) dead white firs, (B) all white fir stems, (C) dead trees 5–20 cm dbh, (D) all small stems 5–20 cm

ScholarsArchive@OSU

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 stand structure and pattern of old-growth Western Hemlock/Douglas-Fir and mixed-conifer forests

Multiscale Controls on Natural Regeneration Dynamics after Partial Overstory Removal in Douglas-Fir Forests in Western Oregon, USA

Stand conditions associated with tree regeneration in Sierran mixed-conifer forests

Management of Riparian Buffers: Upslope Thinning with Downslope Impacts

Prediction of Wood Fiber Attributes from LiDAR-Derived Forest Canopy Indicators

Estimating Canopy Cover from Standard Forest Inventory Measurements in Western Oregon

Biophysical controls on soil respiration in the dominant patch types of an old-growth, mixed-conifer forest

Patterns of mortality in an old-growth mixed-forest of the southern Sierra Nevada, California

Patterns of mortality in an old-growth mixed-conifer forest of the southern Sierra Nevada, California

Limit your search

Academic Affiliation

Creator

Contributor

Date

Decade

Language

Peer Reviewed

Resource Type

Rights Statement

Subject

Search Constraints

Search Results

Limit your search