Index Catalog // ScholarsArchive@OSU

Creator:: Gamble, William E., Adams, W. T., Tappeiner, J. C. (John C.), and Oregon State University. Forest Research Laboratory
Abstract:: "In 1954, Dr. Helge Irgens-Moller initiated a rangewide collection of seed and seedlings of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco). Nearly 700 trees or stands were sampled in 10 western states, Canada, and Mexico. From 1957 to 1971, 639 of these collections were planted in the Hospital Tract Rangewide Source Archive...
Resource Type:: Technical Report
Full Text:: that much of the genetic variation on a geographical scale in Douglas-fir is the result of adaptation

Creator:: Oregon State University. Forest Research Laboratory and Harrington, Timothy B. (Timothy Brian)
Resource Type:: Other
Full Text:: Planning with PSME: A Young Douglas-fir and Southwestern Oregon Timothy B. Harrington John C. Tappeiner II

Creator:: Loucks, Donna M., Knowe, Steven A. (Steven Alan), 1954-, Shainsky, Lauri J., Pancheco, Alex A., and Oregon State University. Forest Research Laboratory
Abstract:: This annotated bibliography was compiled to provide a comprehensive list of sources on the ecological factors that affect forest regeneration. Abstracts from 494 publications are indexed by author, species, and subject, and are arranged into 4 major sections. Topics include the effects of biotic factors, abiotic factors, and stand and...
Resource Type:: Technical Report
Full Text:: . Douglas-fir seedlings had a broad optimum temperature range of 18 to �4°C for growth. High temperature

Creator:: Zumrawi, Abdel Azim, Hann, David W., and Oregon State University. Forest Research Laboratory
Abstract:: Equations for predicting diameter growth are an essential component of single-tree growth and yield models (Munro 1974). Diameter growth predictions are used to characterize individual-tree development and to project the growth of stand basal area and volume. Both diameter growth and basal area growth have been used as the dependent...
Resource Type:: Technical Report
Full Text:: the BAL term in Equation �, has a more negative effect on Douglas-fir than on grand fir. The effect

Creator:: McNabb, D. H. and Oregon State University. Forest Research Laboratory
Resource Type:: Technical Report
Full Text:: two treatments of the soil surface. Douglas-fir seedlings (2-0) were planted in a 4 by 4 Latin square

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:: (Pinus lambertiana Dougl.), and/or incense-cedar (Libocedrus decurrens Torr.); Douglas-fir must be a

Creator:: Kellogg, L. D. (Loren D.), Milota, Ginger, Stringham, Bennett, and Oregon State University. Forest Research Laboratory
Abstract:: Logging planning and layout costs were examined for commercial thinning of 40- to 50-yr-old stands of Douglas-fir on the Willamette National Forest in the Cascade Mountains of Oregon. The study consisted of four replications of three silvicultural treatments. Thinning involved three types of logging systems: mechanized cut-to-length (a combination of...
Resource Type:: Technical Report
Full Text:: ), followed by planting the patch cuts with a mixture of Douglas-fir, western hemlock (Tsuga heterophylla

Creator:: Tesch, S. D., Mann, John William, and Oregon State University. Forest Research Laboratory
Abstract:: Clearcut and shelterwood reproduction methods are both important, silviculturally viable reforestation tools for southwest Oregon. The ecology of local forests lends itself to the successful application of either method, in most cases; thus, choice of method is typically based on land management objectives, which integrate social and resource values, economics,...
Resource Type:: Technical Report
Full Text:: Shelterwood Reproduction Methods for Regenerating Southwest Oregon Forests S.D. Tesch J.W. Mann A FOREIT

Creator:: Scheffer, T. C., Morrell, Jeffrey J., and Oregon State University. Forest Research Laboratory
Abstract:: Naturally durable woods have a variety of commercial uses. Natural resistance to decay has been evaluated in field and laboratory tests of wood from many species, but there are few places where commercial wood users can find comparative assessments of natural durability. In this report, previous studies have been used...
Resource Type:: Technical Report
Full Text:: - ceptions to this trend have been found in Douglas-fir, a moderately durable 6 conifer (Scheffer and

Creator:: Garman, Steven L. (Steven Lee), 1955-, Acker, Steven A., Ohmann, Janet L., Spies, Thomas A. (Thomas Allen), and Oregon State University. Forest Research Laboratory
Abstract:: Equations for predicting height from diameter outside bark at breast height (DBH) were generated for 24 tree species in western Oregon. The equations were based on the asymptotic Chapman-Richards function. Because geographic location and site productivity may influence height-diameter relationships, height-diameter measures from 8727 plots were first grouped by site...
Resource Type:: Technical Report
Full Text:: to generate a significant height-diameter equation. Sample sizes of Douglas- fir and western hemlock

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