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Silvicultural impacts of sheep grazing in Oregon's Coast Range

Creator:: Leininger, Wayne C.
Abstract:: A three-year investigation was conducted during 1980-1982 to evaluate the potential of using herded sheep as a silvicultural tool to suppress brush in Douglas-fir (Pseudotsuga menziesii) plantations of Oregon's Coast Range. Sheep browsing of Douglas-fir was highest in May soon after bud break. Averaged over the 2 years of grazing,...
Resource Type:: Dissertation
Full Text:: . Beschta, W. H. Emmingham, and H. F. Horton. Dr. W. C. Krueger was also very helpful during my tenure at

The chemical nature of the "lignin" of the bark of Douglas fir, Pseudotsuga menziesii (Mirb.) Franco

Creator:: Smith, James E. (James Edward)
Resource Type:: Dissertation
Full Text:: DOUGLAS FIR, · PSEUDOTSUGA MENZIESII (MffiB.) FRANCO by JAMES EDWARD ITH A THESIS submitted to

Fungi associated with Douglas-fir seed during cone development, seed processing, and storage

Creator:: Gordon, Lewin Roland
Abstract:: The Pacific Coast form of Douglas-fir in natural forest succession is an intermediate species thriving in the Coast Range and Cascade Mountains of the Pacific Northwest. This species constitutes 26 percent of the standing timber in the United States, and 24 percent of the nation's annual timber harvest. Characteristics of...
Resource Type:: Masters Thesis
Full Text:: . Lewis F. Roth for his council and guidance throughout the course of the study and for suggestions

Forest structure and regeneration in the Tsuga heterophylla - Abies amabilis transition zone, central Western Cascades, Oregon

Creator:: Stewart, Glenn H.
Abstract:: The dynamics of stands in the mid-elevation old-growth Douglas-fir (Pseudotsuga menziesii) forests of the central western Oregon Cascade Range were investigated using stand structure analysis. Trees with different growth rates were commonly present in the same stand, which resulted often in a weak correlation between tree diameter and age. Thus,...
Resource Type:: Dissertation
Full Text:: transition zone. central Western Cascades, Oregon Redacted for Privacy Abstract approved: Jerry F. Franklin

Ultrastructure of parenchyma and sclereids in Douglas-fir [Pseudotsuga menziesii(Mirb.)Franco] bark

Creator:: Dougal, Edward Francis
Abstract:: Because Douglas-fir [Pseudotsuga menziesii(Mirb.)Franco] bark is a raw material produced in our renewable forests along with wood, an understanding of the ultrastructure of bark cells is of paramount importance if wood technologists are to utilize the bark to the fullest potential. The objectives of this study were to develop microscopic...
Resource Type:: Dissertation
Full Text:: Abstract approved: AN ABSTRACT OF THE THESIS OF Edward Francis

The manufacture of cork insulating board from Douglas fir bark through the organization of a cooperative

Creator:: McAlvage, Edward M.
Resource Type:: Undergraduate Thesis
Full Text:: Fir Bark Through the Organization of a Cooperative by Edward M. MeAlvage A Thesis Presented to

Strength and related properties of Douglas fir from mill samples

Creator:: Snodgrass, James D. and Noskowiak, Arthur F.
Resource Type:: Technical Report
Full Text:: bd.'5'-f 0 7,;2- ~0, 10 Q..Of> . .;;)- by ~nd Related

Temperature effects on the growth of Douglas-fir seedlings

Creator:: Wommack, Donald Everett
Abstract:: This study was undertaken to determine the effects of different chilling treatments during the dormant season upon growth of Douglas-fir seedlings0 In addition it was planned to determine whether seedlings native to various geographic areas differ in their chilling requirements0 The hypotheses were advanced, based on previous studies, that chilling...
Resource Type:: Dissertation
Full Text:: than chill- ing at temperatures near 32°F., or 50°F., and that plants native to areas of low elevation

Time-dependent deflection of Douglas fir beams in bending and shear modes

Creator:: Capell, Harry Thomas
Abstract:: Creep in wood has been observed since 1833 but only recently has it been studied quantitatively. The aim of this paper is to study the time-dependent deflections of Douglas fir, Coast Region beams in bending and shear modes. The general method of approach used is that of large scale observation....
Resource Type:: Masters Thesis
Full Text:: /4} x Figure 1. Beam loaded at quarter spans. 2c = depth 44v f- /4 s- IP i p Equating

Comparative rates of CO₂ production from the forest floor in the Douglas-fir ecosystem

Creator:: Phillips, Michael John
Abstract:: To obtain data on the decomposition of the forest floor, a battery operated electrolytic respirometer was developed making it possible to measure CO₂ evolution from field moist forest floor samples in situ independent of root respiration. Banks of four respirometers powered by two 12-volt batteries were installed in three old...
Resource Type:: Masters Thesis
Full Text:: study. I thank Susan Phillips and Mrs. F. Glenn at the Forest Sciences Laboratory at Oregon State

ScholarsArchive@OSU

Silvicultural impacts of sheep grazing in Oregon's Coast Range

The chemical nature of the "lignin" of the bark of Douglas fir, Pseudotsuga menziesii (Mirb.) Franco

Fungi associated with Douglas-fir seed during cone development, seed processing, and storage

Forest structure and regeneration in the Tsuga heterophylla - Abies amabilis transition zone, central Western Cascades, Oregon

Ultrastructure of parenchyma and sclereids in Douglas-fir [Pseudotsuga menziesii(Mirb.)Franco] bark

The manufacture of cork insulating board from Douglas fir bark through the organization of a cooperative

Strength and related properties of Douglas fir from mill samples

Temperature effects on the growth of Douglas-fir seedlings

Time-dependent deflection of Douglas fir beams in bending and shear modes

Comparative rates of CO₂ production from the forest floor in the Douglas-fir ecosystem

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