Index Catalog // ScholarsArchive@OSU

Creator:: Gray, Andrew N., Whittier, Thomas R., and Azuma, David L.
Abstract:: A substantial portion of the carbon (C) emitted by human activity is apparently being stored in forest ecosystems in the Northern Hemisphere, but the magnitude and cause are not precisely understood. Current official estimates of forest C flux are based on a combination of field measurements and other methods. The...
Resource Type:: Article
Full Text:: nonforest �21 (11) �55 (17) �75 (20) Reversion to forest 150 (46) 32 (10) 183 (47) Forestland 1997 2,901

Creator:: Hrinkevich, Kathryn H., Progar, Robert A., and Shaw, David C.
Abstract:: Severity rating systems are fundamental to understanding the impacts of disturbance agents in forest stands. The balsam woolly adelgid (BWA), Adelges piceae (Ratzeburg) (Hemiptera: Adelgidae), is an invasive forest pest in North America that infests and causes mortality in true fir, Abies spp. There is currently no single system for...
Resource Type:: Article
Full Text:: . Forest Science • April 2016 183 ensuring that difficult-to-see top-down damage is represented in the

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:: branch (HLB) were measured on a subsample of Douglas-fir trees 183 8 across the diameter range

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

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

Creator:: Progar, Robert A., Gillette, Nancy, Fettig, Christopher J., and Hrinkevich, Kathryn
Abstract:: Mountain pine beetle, Dendroctonus ponderosae Hopkins, is a primary agent of forest disturbance in western North America. Episodic outbreaks occur at the convergence of favorable forest age and size class structure and climate patterns. Recent outbreaks have exceeded the historic range of variability of D. ponderosae-caused tree mortality affecting ecosystem...
Resource Type:: Article

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