Index Catalog // ScholarsArchive@OSU

Interactive visualization of Douglas fir forest growth using 3-PG

Creator:: Thompson, Allison
Abstract:: Forests are important to Oregon for their beauty as well as economic value, and Douglas fir trees are among the most common and important in the state. Managing and monitoring Oregon’s forests is imperative to ensure they can remain healthy and productive. One tool that helps forest scientists to understand...
Resource Type:: Honors College Thesis
Full Text:: Interactive Visualization of Douglas Fir Forest

Simulating Effects of Genetic Tree Improvement on Growth and Yield of Coastal Douglas-fir

Creator:: Joo, Sukhyun
Abstract:: Estimating volume gains in genetically improved stands at rotation age is challenging because first-generation progeny tests in Douglas-fir were typically established to measure the relative growth performance of individual trees from open-pollinated parent trees. The overall goal of this dissertation research was to improve growth simulation of genetically improved Douglas-fir...
Resource Type:: Dissertation
Full Text:: Title: Simulating Effects of Genetic Tree Improvement on Growth and Yield of Coastal Douglas-fir

The impact of microclimate variation on budburst phenology within a mature Douglas-fir tree (Pseudostuga menziesii)

Creator:: Miller, Rebecca A.
Abstract:: Budburst, the initiation of annual growth in plants, is sensitive to climate variation and is therefore used to monitor physiological responses to climate change. Budburst timing can vary between regions of an individual tree, but this phenomenon it is unaccounted for in current monitoring efforts and may contribute to the...
Resource Type:: Undergraduate Thesis

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:: and Shea (43, p. 1) attempted to reduce deterioration of the seed by treatment of Douglas -fir cones

A review of the present methods of measuring stand density and a presentation of new research on the application of Crown Competition Factor to Douglas-fir

Creator:: Hicks, Thomas Harney
Abstract:: It is the purpose of this paper to explore the possible application of this relatively new method to second-growth Douglas-fir stands.
Resource Type:: Capstone Project

The occurrence of abscisic acid in the dormant shoots of Douglas-fir [Pseudotsuga menziesii (Mirb.) Franco]

Creator:: Webber, John Edinburgh
Abstract:: Methanolic extracts of the dormant Douglas-fir shoots (buds, leaves, and stems) were fractionated by solvent partitioning (sodium bicarbonate-diethyl ether). The acidic portion of the extract was subjected to column (Sephadex LH-2O, Silica Gel and Polyvinylpyrrolidone), preparative thick-layer and gas-liquid chromatography. Fractions collected from chromatographic separations were collected and tested for...
Resource Type:: Dissertation

Micropropagation of Douglas fir (Pseudotsuga menziesii) in a double-phase culture medium

Creator:: Gross, Leah M.
Abstract:: The timber and Christmas tree industries are important components of the Pacific Northwest economy. A goal of both industries is to produce high quality trees with high growth rates. Accomplishing this requires increased genetic quality of the trees grown. Tissue culture provides the most promise for propagating these superior genotypes....
Resource Type:: Honors College Thesis

Managing Douglas-fir Mortality: Case Studies from Western Oregon

Creator:: Campbell, Lewis
Abstract:: An increase in frequency and severity of hot, dry summers has been associated with a dramatic shift in the coniferous forests of western Oregon’s valleys, especially on the privately-owned properties along the low-elevation edges of these valleys. Various conifer species, including Douglas-fir (Pseudotsuga menziesii), are declining in these forests, leaving...
Resource Type:: Capstone Project
Full Text:: . Title: Managing Douglas-fir Mortality: Case Studies from Western Oregon Abstract approved

Douglas-fir hydraulic architecture and relationships among xylem properties at multiple scales via a Bayesian analysis

Creator:: Dunham, Sonya M.
Abstract:: This study investigated variation in xylem anatomy, hydraulic properties, and the relationship between anatomy and properties within Douglas-fir trees at multiple scales. The hierarchical scales in the study included fertilization treatments (fertilized and unfertilized), trees within the treatments, and positions within the trees. Tracheid diameter, tracheid length, percent latewood, number...
Resource Type:: Masters Thesis
Full Text:: , 2006. Title: Douglas-fir Hydraulic Architecture and Relationships Among Xylem Properties at Multiple

The starch content of roots and the osmotic concentration of expressed xylem sap as predictors of Douglas-fir seedling quality

Creator:: Forry, Keith R.
Abstract:: The goal of this study was to evaluate the ability of two seedling quality evaluation methods to predict the field survival of Douglas-fir (Pseudotsuga menziesii) seedlings. The starch reserves in seedlings have been suggested as a possible predictor of seedling quality. Starch reserves have been shown to decrease during cold...
Resource Type:: Masters Thesis
Full Text:: Roots and the Osmotic Concen- tration of Expressed Xylem Sap as Predictors of Douglas-Fir Seedling

ScholarsArchive@OSU

Interactive visualization of Douglas fir forest growth using 3-PG

Simulating Effects of Genetic Tree Improvement on Growth and Yield of Coastal Douglas-fir

The impact of microclimate variation on budburst phenology within a mature Douglas-fir tree (Pseudostuga menziesii)

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

A review of the present methods of measuring stand density and a presentation of new research on the application of Crown Competition Factor to Douglas-fir

The occurrence of abscisic acid in the dormant shoots of Douglas-fir [Pseudotsuga menziesii (Mirb.) Franco]

Micropropagation of Douglas fir (Pseudotsuga menziesii) in a double-phase culture medium

Managing Douglas-fir Mortality: Case Studies from Western Oregon

Douglas-fir hydraulic architecture and relationships among xylem properties at multiple scales via a Bayesian analysis

The starch content of roots and the osmotic concentration of expressed xylem sap as predictors of Douglas-fir seedling quality

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