Index Catalog // ScholarsArchive@OSU

Carbon and nitrogen allocation patterns of 2-0 Douglas-fir seedlings following nitrogen fertilization in the autumn

Creator:: Margolis, Hank A.
Abstract:: Douglas-fir (Pseudotsuga menziesii Mirb. Franco) seedlings at a nursery in western Oregon were fertilized with nitrogen in October. Free amino acid (FAA) and total nitrogen concentrations in needles, stems and fine roots were followed from before fertilization until just prior to budbreak the following spring. Before budbreak in mid-March, the...
Resource Type:: Dissertation

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

Some factors in the establishment and growth of Douglas fir

Creator:: Jester, Curtis
Resource Type:: Undergraduate Thesis
Full Text:: Fir Some Factors in the_ Establishment and Growth of Douglas Fir by Curtis Jester A Thesis

The growth of seedlings of some coniferous species in a controlled environment

Creator:: Lavender, Denis Peter, 1926-
Resource Type:: Dissertation
Full Text:: greenhouse and have conducted fertilizer trials in young Douglas fir stands on the glaciated soils in

Botrytis infection of Douglas-fir seedlings and its control with thiram

Creator:: Halber, Max
Resource Type:: Masters Thesis
Full Text:: Botrytis Infection of Douglas-Fir Seedlings and Its

Origin and differentiation of the seed cone of Pseudotsuga menziesii (Mirbel) Franco

Creator:: Owens, John N.
Resource Type:: Dissertation
Full Text:: establishes the time and mode of lateral bud initiation in Douglas-fir and describes in detail the

Root initiation and differentiation in Pseudotsuga menziesii (Mirbel) Franco

Creator:: Bogar, Gerald Dale
Abstract:: Tissue differentiation of the primary root and its associated laterals is reported. Secretory elements are the first of the primary tissues to mature. They appear to be located between the precursory phloem and pericycle in the primary root, but are more closely associated with the pericycle in long lateral roots....
Resource Type:: Masters Thesis
Full Text:: ) FRANCO INTRODUCTION The anatomy of Douglas -fir (Pseudotsuga menziesii (Mirb. ) Franco) has been

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:: Fungi Associated with Douglas-Fir Seed During Cone

Cambial divisions in Pseudotsuga menziesii

Creator:: Sisson, Warren Elmer, Jr.
Abstract:: Mitotic activity in the vascular cambium was determined from ten samples from a single internode in each of four Douglas-fir [(Pseudotsuga menziesii (Franco.) Mirb.)]trees. Counts of interphase and mitotic nuclei from nine cores in each sample piece were averaged and expressed as the frequency and mitotic index. The sampling error...
Resource Type:: Masters Thesis
Full Text:: Douglas -fir [(Pseudotsuga menziesii (Franco. ) Mirb. )]trees. Counts of inter - phase and mitotic

Douglas-fir: The Genus Pseudotsuga

Creator:: Lavender, Denis P. and Hermann, Richard K.
Abstract:: Douglas-fir (Pseudotsuga menziesii) has a wide distribution in North America and is one of the tree species most widely distributed outside its natural range. The species has been introduced to Europe, New Zealand, South America, and elsewhere around the world. At present, Douglas-fir is an accepted and integral part of...
Resource Type:: Book

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:: CO2 PRODUCTION FROM THE FOREST FLOOR IN THE DOUGLAS-FIR ECOSYSTEM Redacted for Privacy ChesterA

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

Lethal surface temperatures and their interpretation for Douglas-fir

Creator:: Silen, Roy R.
Resource Type:: Dissertation

The physiology of plagiotropic growth of rooted cuttings of Douglas-fir [Pseudotsuga menziesii (Mirb.) Franco]

Creator:: Starbuck, Christopher J.
Abstract:: Experiments were conducted to determine if the plagiotropic growth habit of rooted cuttings of Douglas-fir might result from a system favoring the accumulation of indoleacetic acid in the adaxial side of the shoot in response to vertical placement. Actively growing excised branch terminals were subjected to gravitational disorientation to determine...
Resource Type:: Dissertation
Full Text:: OF PLAGIOTROPIC GROWTH OF ROOTED CUTTINGS OF .DOUGLAS-FIR [PSEUDOTSUGA MENZIESII (MIRB.) FRANCO

Water relations and the root regeneration response of Douglas-fir

Creator:: Cobb, Cheryl Anne
Abstract:: The effect of lifting date and root-pruning treatments on water potential, root regeneration, and shoot growth of six-month-old and three-year-old Douglas-fir seedlings bare-root transplanted into a growth chamber, and sawdust bed, respectively, was studied. Root growth in six-month-old and three-year-old seedlings was highest in February and August respectively. Survival was...
Resource Type:: Masters Thesis
Full Text:: THE ROOT REGENERATION RESPONSE OF DOUGLAS-FIR Abstract approved^ Leslie H. Fuchigami The

Root initiation and elongation in Douglas-fir, Pseudotsuga menziesii (Mirb.) franco, stem cuttings as related to bud and cambial activity

Creator:: Bhella, Harbans Singh
Abstract:: The relation of bud and cambial activity to root initiation and elongation in Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) stem cuttings was studied through two successive growth cycles. Stem cuttings of current season's growth were taken periodically from field-grown Douglas-fir trees to determine: (1) origin and development of root initials; and...
Resource Type:: Dissertation
Full Text:: , 1973 (Major) (Date) Title: ROOT INITIATION AND ELONGATION IN DOUGLAS-FIR, PSEUDOTSUGA

Influences of shoot origin and certain pre- and post-severance treatments on the rooting and growth characteristics of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) stem cuttings

Creator:: Black, Darvil Kim
Resource Type:: Dissertation
Full Text:: ROOTING AND GROWTH CHARACTERISTICS OF DOUGLAS-FIR (PSEUDOTSUGA MENZIESII (MIRB. ) FRANCO) STEM

Some anatomical features of Douglas-fir wood rated permeable and refractory

Creator:: Krahmer, Robert Lee
Resource Type:: Masters Thesis
Full Text:: within a species is known to exist. Douglas-fir (Psudotsuga menzjesjj. (Mirb.) Franco) heartwood samples

A study of several anatomical variables in relation to their effect on tensile strength of Douglas-fir

Creator:: McMinimy, Lawrence Otto
Abstract:: A microscopic study was conducted on specific gravity wafers taken from standard tensile strength specimens of young growth Douglas-fir. Samples were studied to determine the effect of variables such as percent summerwood, fiber length and fibril angle on tensile strength of Douglas-fir. The sample specimens were picked so effects of...
Resource Type:: Masters Thesis
Full Text:: VARIABLES IN RELATION TO THEIR EFFECT ON TENSILE STRENGTH OF DOUGLA Abstract approved A microscopic study

Photosynthesis, respiration, and dry matter accumulation of Douglas-fir seedlings from different geographic sources and growth at different temperatures

Creator:: Sorensen, Frank C.
Resource Type:: Dissertation
Full Text:: Dry Matter Accumulation of Douglas-fir Seedlings from Different Geographic Sources and Grown at

Direct seeding of Douglas fir with special reference to survival

Creator:: Finnis, John Michael
Resource Type:: Masters Thesis

Within-stem variation of respiration in Pseudotsuga menziesii (Douglas-fir) trees

Creator:: Pruyn, Michele L., Gartner, Barbara L., and Harmon, Mark E.
Abstract:: • A technique for measuring in vitro respiration was investigated to understand why rates were higher than those reported in vivo and to elucidate trends within mature Pseudotsuga menziesii (Douglas‐fir) trees. • Extracted increment cores were divided into 3–4 radial depths and a gas chromatograph was used to compare respiration...
Resource Type:: Article
Full Text:: Pseudotsuga menziesii (Douglas-fir) trees Michele L. Pruyn 1 , Barbara L. Gartner 1

Evaluating radial compression, color indicator and micro-toughness tests to detect early decay in Douglas-fir

Creator:: Smith, Susan M.
Abstract:: Three methods--radial compression strength, color indicators of decay and micro-toughness, an examination of tracheid fracture patterns, were evaluated for detection of early decay and for application to field use. Three-eighth-inch diameter plugs 3/4-inch long, cut from the sapwood and heartwood of a Douglas-fir pole free of decay, were decayed by...
Resource Type:: Masters Thesis
Full Text:: -Fir R. D. Gya am R. L. Krahmer Three methods--radial compression strength, color indicators of

Microdistribution and retention of chloropicrin in wood

Creator:: Goodell, Barry Scott
Abstract:: Quantitative and qualitative information on the retention of chlorinated residues in chloropicrin treated wood is lacking. Retention of chloropicrin and its chemical breakdown products in wood, and the effects of chloropicrin treatment of wood on invading decay fungi are explored in this thesis. Chlorinated residues in amounts up to 1.5%...
Resource Type:: Dissertation
Full Text:: Retention of Chloropicrin in Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco] Heartwood Quantitative and

The bleaching response of kraft pulps from fresh and aged commercial Douglas-fir chips

Creator:: Lai, Jinn-Hsing
Resource Type:: Masters Thesis

Anatomical and chemical characteristics of the Douglas-fir (Pseudotsuga menziesii (mirb.) Franko) phellem cell

Creator:: Litvay, John Dennis
Abstract:: The objectives of this study were to 1) characterize the layering in the wall of the Douglas-fir (Pseudotsuga. menziesii (Mirb. ) Franco) phellem cell, 2) determine the pitting present in this cell wall and 3) determine what compounds are present in the middle lamella of this cell. To accomplish the...
Resource Type:: Dissertation

Douglas-fir bark : water-soluble carbohydrates and alkaline degradation of a xylan

Creator:: Zerrudo, Jose Velmonte
Resource Type:: Dissertation

The influence of seed source origin and phenological characteristics on wood quality in a young Douglas-Fir Provenance Plantation

Creator:: Robinson, Walter P.
Abstract:: The relationships of several wood quality traits with seed origin and phenological characteristics, measured at a young age, were tested from six seed sources in a young Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) provenance plantation. The wood quality traits measured were wood density, uniformity of wood density, percentage latewood, fiber length,...
Resource Type:: Masters Thesis

Effect of seedling characteristics on Kraft pulping properties of young Douglas-fir

Creator:: Chia, Shun Nan
Abstract:: A study has been made of the kraft pulping properties of young Douglas-fir trees which were thinned from an experimental plantation. The purpose of the plantation study is to determine, whether two year old seedlings can be selected on the criteria of height and branch count for future desirable tree...
Resource Type:: Masters Thesis

The influence of time of establishment and competition of the comparative heights of second growth Douglas-fir trees

Creator:: Krueger, Kenneth W.
Resource Type:: Masters Thesis

Some factors affecting Douglas-fir seedling growth and establishment

Creator:: Howland, James Rodney
Resource Type:: Masters Thesis

The influence of environment, genetics and growth characteristics on tracheid length and specific gravity variation in a Douglas-fir provenance study

Creator:: Nicholas, Darrel Dean
Resource Type:: Masters Thesis

Stability and density management in Douglas-fir plantations

Creator:: Hann, David W.
Abstract:: In their recent Canadian Journal of Forest Research Comment 368 article, Wilson and Oliver (2000) developed an equation for predicting the average ratio of height to diameter at breast height for the largest 250 trees/ha (H/DL250) in unthinned stands as a function of initial density and dominant height of the...
Resource Type:: Article
Full Text:: -fir plantations1 David W. Hann Comment 368In their recentCanadian Journal of Forest Researcharti

Pollen contamination trends in a maturing Douglas-fir seed orchard

Creator:: Adams, W. T., Hipkins, Valerie D., Burczyk, J., and Randall, W. K.
Abstract:: Pollen contamination was investigated in one block (block 4) of a 10-block Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) seed orchard complex in western Oregon. Blocks (25 clones each) represent different breeding zones; thus, contaminant pollen sources not only included the adjacent natural stand of Douglas-fir, but also other blocks within the...
Resource Type:: Article
Full Text:: Pollen contamination trends in a maturing Douglas-fir seed orchard1

Physiological control of fine root turnover in Douglas-fir

Creator:: Marshall, John D. (John David), 1956-
Abstract:: To determine whether shading increases drought-induced root mortality by changing the chemical composition of roots, I conducted an experiment in which high and low light treatments in combination with high and low soil moisture treatments were applied to seedlings of Douglas-fir (Pseudotsuqa menziesii Mirb. Franco). Because synthesis of suberin (a...
Resource Type:: Dissertation

Diurnal and seasonal changes in xylem water potential, stomatal conductance and abscisic acid in five different habitat types of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco)

Creator:: Murphy, Ellyn Margaret
Abstract:: Sapling Douglas-fir trees on five sites in the Coastal and Cascade Mountain ranges of Oregon were measured five times during the year from the summer of 1977 through the spring of 1978 for diurnal patterns of xylem water potential, stomatal conductance and abscisic acid. Vapor pressure deficit and solar radiation...
Resource Type:: Masters Thesis

First year survival and growth of planting stock of various size on adverse sites

Creator:: Chetock, Jerome J.
Abstract:: First year survival of Douglas-fir seedlings outplanted in areas characterized by intense vegetative competition is heavily dependent on available soil moisture. To test this hypothesis, five distinct classes of Douglas-fir planting stock were planted on the south slope of McCulloch Peak in McDonald Forest in February of 1975. The stocking...
Resource Type:: Masters Thesis

Effects of different yield functions and initial inventory on harvest schedules for Douglas-fir

Creator:: Vomocil, Marc Grayson
Abstract:: The procedure of forest level harvest scheduling incorporates many inputs of an uncertain nature. Forest management planners must be aware of the possible effects of the use of erroneous input information on the results of their planning. With that knowledge they can better plan a risk management strategy and make...
Resource Type:: Masters Thesis

The effect of preconditioning light intensity on photosynthesis of seedlings of two ecotypes of Douglas-fir

Creator:: Hellinga, Gerald Alan
Abstract:: Douglas-fir (Pseudotsuga menziesii (Mirb. ) Franco) seedlings of a high elevation Rocky Mountain source and a low elevation coastal source were pretreated under both high and low intensity artificial light in a growth chamber and outside in a cold frame. Net photosynthesis was then measured at three ages, 6, 10,...
Resource Type:: Masters Thesis

Comparative development of a thinned and a natural Douglas-fir stand from 45 to 60 years of age

Creator:: Groman, William A.
Abstract:: An understanding of the dynamics of individual tree and stand growth, development, and structural patterns during the immature formative years of a commercial species is essential to determine correct thinning practices necessary to attain desired objectives. This study compared a natural, medium-site Douglas-fir stand and an adjacent similar stand released...
Resource Type:: Dissertation

Douglas-fir bark : n-hexane-soluble and volatile materials

Creator:: Fang, Henry Hai-loong
Abstract:: Douglas-fir bark was extracted with n-hexane. A light-colored "wax-like" solid was recovered from the extract by evaporation of the solvent. Chemically intact sterol esters and ferulic acid esters were isolated from the "wax" without saponification or degradation as had been necessary in former investigations. The characterization of the intact esters...
Resource Type:: Dissertation

Geographical variation in apparent net photo-synthesis of Rocky Mountain Douglas-fir, Pseudotsuga menziesii var. glauca

Creator:: Pope, Walter William
Abstract:: Rates of apparent net photosynthesis were measured on a sample of Rocky Mountain Douglas-fir consisting of eleven one-year-old seedlings from each of the thirteen different seed sources. Secondary observations of needle length, needle weight, and needle number were also obtained. A formula derived through step-wise multiple regression of the secondary...
Resource Type:: Masters Thesis

The effect of osmotic moisture stress during germination on Douglas-fir (Pseudotsuga menziesii)

Creator:: Stewart, Ronald E
Abstract:: Commercially collected Douglas-fir seed from a moist coastal ecotype (LaPush, Washington) and a dry inland ecotype (Kaibab National Forest, Arizona) were subjected to osmotic stresses ranging from 0 to -8 atmospheres using Carbowax polyethylene glycol 6000 during imbibition and germination. To determine the effect of osmotic stress on the initiation...
Resource Type:: Dissertation

Effects of herbaceous weed control on young Douglas-fir moisture stress and growth

Creator:: Preest, David Stanley
Abstract:: Profitable, even-aged forest management depends on the early establishment and rapid growth of each new forest crop. These, in turn, require that the young trees have access to an adequate supply of native resources of moisture, nutrients and light. In Mediterranean-type climates, competition for soil moisture is the most serious...
Resource Type:: Dissertation

Nutrient cycling under 450-year-old Douglas-fir stands

Creator:: Abee, Albert
Abstract:: To investigate the movement of elements (N, P, k, Ca, and Mg) from the tree crowns by natural litterfall and leave wash, plots were established on six 450 year-old growth stands at the H. J. Andrews Experimental Forest. The following are the results of the data analyses. Elemental concentrations contained...
Resource Type:: Masters Thesis
Full Text:: January 4, 1973. Title: IJutrient Cycling Under 450-Year-old Dougl~s-fir Stands. Abstract app roved e

Abscisic acid levels in relation to stomatal behavior during drought and recovery in contrasting ecotypes of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco)

Creator:: Newville, Edward G.
Abstract:: Foliage of Douglas-fir seedlings [Pseudotsuga menziesii (Mirb.) Franco] from two contrasting environments was sampled during progressive stages of two consecutive cycles of induced drought for leaf resistance, plant water potential , and abscisic acid content (ABA). One group of seedlings was placed in a controlled environment room while another group...
Resource Type:: Masters Thesis

Distribution of light within the crown of an open-grown Douglas-fir

Creator:: Ungs, M. J. (Michael J.)
Abstract:: A systematic investigation was made of the distribution of short wave radiation within the crown of an open-grown Douglas-fir tree. The study tree was 23 years old, 14 meters tall and had a maximum crown diameter of about ten meters. Global radiation was measured every 15 cm along eight different...
Resource Type:: Dissertation

Genecology of Douglas-fir from southwestern Oregon

Creator:: White, Timothy L., 1951-
Abstract:: This thesis is divided into three chapters. For all chapters, the experiments described deal with the responses of all or a subset of 72 wind-pollinated Douglas-fir families from 36 different locations in southwestern Oregon. Wind-pollinated seed was collected from each of two trees at each of the 36 locations. The...
Resource Type:: Dissertation

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

Variation in the foliar nutrient status of several Douglas-fir provenances

Creator:: Stevens, Roderick D.
Abstract:: From a preliminary 1969 foliar analysis, eight provenances were chosen from the sixteen included in a region-wide, reciprocal Doulgas-fir provenance study for further study of variation in foliar nutrition. In the fall of 1969 separate foliar samples were collected from ten trees per provenance at each of ten plantations ranging...
Resource Type:: Dissertation

Seasonal variation in leaf weight and nitrogen content of Douglas-fir plantations in the Coast Range and Cascade Mountains of western Oregon

Creator:: Smith, Robert Bruce
Abstract:: Seasonal variations in Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) leaf weight and nitrogen content were measured in Oregon's Coast and western Cascade Ranges. Current and older foliage from thinned and unthinned stands were sampled monthly from October, 1978 to September, 1979. Changes in leaf weight per unit area of foliage and...
Resource Type:: Masters Thesis

Growth and development of young Douglas-fir in relation to intra- and inter-specific competition

Creator:: Zedaker, Sheperd M.
Abstract:: This thesis explored the relationships between the growth of Douglas-fir seedlings and light and moisture resource availability as influenced by competitor type and density in the Oregon Coast Range. Twelve 360 m2 Nelder plots, encompassing a range of 300 to 15,000 cm2 per plant in 48 spokes, were established in...
Resource Type:: Dissertation

Indole-3-acetic acid in Douglas-fir (Pseudotsuga menziesii (mirb.) Franco) : a definitive analysis of gas-liquid chromatography-mass spectrometry

Creator:: DeYoe, David R.
Abstract:: Definitive evidence for the occurrence and seasonal variation of indole-3 -acetic acid (IAA) in shoots 0 DougLas-fir (Pseudotsuga rrienztesii (Mirb. ) Franco) was sought. Collections obtained in December and June were extracted by solvent using methanol arid diethyl ether arid by certtrtfugatiori. Extraction by ceritrifugation appeared to be twice as...
Resource Type:: Masters Thesis

Growth behavior of Douglas-fir reproduction in the shade of managed forest in the interior Coast Range of Oregon

Creator:: Del Rio, Ernest
Abstract:: During the past 20 years, repeated thinning of a Douglas-fir forest, now 65 years old, has allowed desired limits of basal area to be maintained. In the process, the understory environment has altered sufficiently to allow Douglas-fir reproduction to establish in abundance. The forest is located on the east side...
Resource Type:: Masters Thesis

Effect of auxins, cytokinins and nutrition on adventitious bud formation in tissues of Douglas-fir grown in culture

Creator:: Thompson, David George
Abstract:: Vegetative propagation is most effective when individuals of demonstrated superior characteristic can be propagated. For this reason, a method for the induction of adventitious buds on cultured Douglas-fir shoot tips from 20-25 year old trees was developed. Douglas-fir shoot tips failed to survive and grow on a full strength Murashige...
Resource Type:: Dissertation

Physiological responses of four Douglas-fir populations in three contrasting field environments

Creator:: Emmingham, William H.
Abstract:: When trees from 16 populations of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco. var. menziesii) were grown at ten geographically diverse locations for seven years, those from a Vancouver Island source were among the top three for height growth on nine of the ten plantations (Rowe and Ching, 1974). In contrast, growth...
Resource Type:: Dissertation

Geographic variation in juvenile growth characteristics of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) from the coastal ranges of California

Creator:: Griffin, Anthony Roderick
Abstract:: A sample of 181 wind pollinated families, representative of the range of environmental conditions occupied by Douglas-fir in northern California, was used as a basis for studying variation in early height growth, phonology, and seed characteristics. Seedlings were raised at Corvallis, Oregon, in a nursery trial designed to evaluate response...
Resource Type:: Dissertation

A comparative karyotype analysis of pseudotsuga menziesii [Mirb.] Franco and Pseudotsuga wilsoniana [Hayata]

Creator:: Thomas, Gerald Evan
Abstract:: Karyotype analyses have been madeon only two on the six recognized species in the genus Pseudotsuga, Douglas-fir (P. menziesii) and bigcone Douglas-fir (P. macrocarpa). In this study, a comparison was made between the karyotypes of Douglas-fir and Formosan Douglas-fir (P. wiloniana). The basic chromosome number of the Formosan Douglas-fir was...
Resource Type:: Masters Thesis

First-year response of Douglas-fir after release from snowbrush ceanothus

Creator:: Petersen, Terry D.
Abstract:: The release of Douglas-fir from competition with snowbrush (Ceanothus velutinus Dougl.) has often been suggested as a way to improve conifer yield in the western Cascades. This study investigated this possibility by describing changes in the availability of water and light and the response of Douglas-fir to the changing environment,...
Resource Type:: Masters Thesis

Effects of light preconditioning on the seasonal water relations of nursery-grown Douglas-fir

Creator:: Drew, Allan Pierce
Abstract:: Douglas-fir seedlings of a single seed source were grown in a nursery under three levels of light intensity: 9, 44, and 100 percent of full light. Growth over an entire growing season was monitored in terms of proportionate distribution of dry matter to shoot and root systems. This was replicated...
Resource Type:: Dissertation

Seasonal and diurnal variation in internal moisture stress of mature Douglas-fir

Creator:: Cleary, Brian D.
Abstract:: The internal moisture stress of Douglas-fir was determined on foliage collected in the Siskiyou Mountains of southwestern Oregon. Internal moisture stress integrates both climatic and edaphic environmental effects as they influence a plants moisture regime. In this study two laboratory techniques were modified to permit stress measurements to be taken...
Resource Type:: Masters Thesis

Geographic and seasonal variation in photosynthetic efficiency and capacity of Rocky Mountain Douglas-fir, Pseudotsuga menziesii var. glauca

Creator:: Pope, Walter William
Abstract:: Net photosynthesis was measured for photosynthetic light efficiency and capacity on two-year-old plants from eight different seed sources in three measurement periods. The measurement periods corresponded to the physiological periods 1) prior to bud swelling, 2) after needle elongation, and 3) predormancy. Measurement period differences in both photosynthetic efficiency and...
Resource Type:: Dissertation
Full Text:: ROCKY MOUNTAIN DOUGLAS-FIR, PSEUDOTSUGA MENZIESII VAR .. GLAUCA Abstract approved: Signature

Starch content and crown growth in two Douglas-fir stands

Creator:: Kilpatrick, Kran James
Abstract:: The objectives of this investigation were to measure the seasonal and diurnal variations of starch as well as to relate these variations to growth of the trees. This study also microscopically examined the needles to determine if starch exists in granular form in Douglas-fir. The objectives were designed to gain...
Resource Type:: Masters Thesis
Full Text:: Douglas-fir at bud burst. A three piece overlay. 15,16,17 2 Seasonal starch variation with means

The influence of seral Coast Range vegetation on the growth habit of juvenile Douglas-fir

Creator:: Howard, Kerry Megan
Abstract:: A detailed analysis was performed on the juvenile growth of six types of Douglas-fir stock under the influence of typical seral Coast Range vegetation. Objectives were to analyze competitive influences important to the growth of tree seedlings and evaluate differences between stock type characteristics and growth patterns in response to...
Resource Type:: Masters Thesis

Ectomycorrhizal inoculation of Douglas-fir nursery stock with commercially produced inoculum

Creator:: Hung, Ling-ling L.
Abstract:: Nine species of ectomycorrhizal fungi were grown in liquid media over a pH range of 2-7. Species fell into five major groups: (1) growth significantly best only at the optimal pH, (2) growth increased with increase of pH, (3) significantly best growth spans three pH units, (4) spans four pH...
Resource Type:: Dissertation

The effects of winter plant moisture stress on survival and growth of 2+0 Douglas-fir seedlings

Creator:: Daniels, Thomas Gary
Abstract:: The effects of winter plant moisture stress (P145) on bare-root 2+0 Douglas-fir (Pseudotsuga menziesii (Mirb.) Frañco) seedlings during nursery lifting and processing were studied. Seedlings were undercut at Ca. 4, 12, and 20 atm PMS during mid-February. Half of the seedlings undercut at 12 and 20 atm were not moistened...
Resource Type:: Masters Thesis

The effect of drought on the rate of photosynthesis, respiration, and transpiration in two ecotypes of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco)

Creator:: Zavitkovski, J.
Abstract:: The subject of this study was the determination of the changes in photosynthesis, respiration and transpiration in two ecotypes of Douglas-fir as caused by decreasing soil moisture content. The photosynthetic rate was also correlated with the relative turgidities of needles. All the above processes were greatly affected by decreasing soil...
Resource Type:: Masters Thesis
Full Text:: ECOTYPES OF DOUGLAS-FIR (PSEUDOTSUGA MENZIESII Signature redacted for privacy. ..,.j -.(Major professor

Isoenzyme polymorphism in provenances of Douglas-fir (Pseudotsuga menziesii [Mirb.] Franco var. menziesii)

Creator:: Yang, Jenq-chuan
Abstract:: Genetic variability in natural populations of Douglas-fir was studied at molecular level by investigating the variations of some primary gene products, i. e. enzymes. Using the techniques of disc gel electrophoresis and biochemical staining, the isoenzyme patterns of leucine aminopeptidase, esterase and glutamate oxaloacetate transaminase are characterized in young seedlings...
Resource Type:: Dissertation
Full Text:: ) (Date) Title: ISOENZYME POLYMORPHISM IN PROVENANCES OF DOUGLAS-FIR (PSEUDOTSUGA MENZIESII [MIRB

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:: TEMPERATURE EFFECTS ON THE GROfl'H OP DOUGLAS-FIR SEEDLINGS by

Predicting basal area growth in young-growth Douglas-fir using crown competition factor

Creator:: Schaer, Charles W.
Abstract:: A comparison between crown competition factor and basal area as to their ability to predict future basal area growth was conducted. It was shown that for a single age and site combination there was no real difference between the growth prediction ability of the two measures of stand density. It...
Resource Type:: Masters Thesis

Root biomass studies of old-growth Douglas-fir

Creator:: Santantonio, Daniel
Abstract:: Root biomass studies were conducted in an old-growth stand of conifers in the western Cascades of Oregon. The root systems of three Douglas-firs (Pseudotsuga menziesii var. menziesii (Mirb. ) Franco) with diameters at breast height of 94, 110, and 135 cm were excavated and weighed to provide a basis for...
Resource Type:: Masters Thesis

A procedure for the purification and quantitation of abscisic acid : and its application to a study of abscisic acid concentrations in needles of cold stored Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) seedlings

Creator:: Bell, Thomas Evans
Abstract:: A rapid and efficient procedure that required no partitioning was developed for the purification of abscisic acid (AbA) from the needles of Douglas-fir seedlings. Extracted needle pigments were removed by a PVP column and the eluted AbA was concentrated on a DEAE column. The AbA was eluted from the DEAE...
Resource Type:: Masters Thesis

Computer simulation of Douglas-fir tree and stand growth

Creator:: Arney, James Douglas, 1941-
Abstract:: A mathematical model has been developed to describe the growth of individual Douglas-fir trees under a variety of stand conditions and management schedules. The model was developed using empirical data from open-grown trees and reducing growth capacities of height, stem, and crown as functions of intertree competition indices. Any initial...
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

Better Douglas fir forests from better seed

Creator:: Isaac, Leo A. (Leo Anthony), 1892-1970
Abstract:: Gerald W. Williams Collection. Agnes H. Anderson research publications.
Resource Type:: Book

Relationship Between Specific Gravity and Percentage of Summerwood in Wide-Ringed, Second-Growth Douglas-Fir

Creator:: Smith, Diana M.
Abstract:: For the sample of wide-ringed Douglas-fir discussed in this report, the relationship between specific gravity and percentage of summerwood is linear over a range of 16 to 60 percent summerwood content of the annual ring. The specific gravity of the summerwood and springwood portions of 96 dissected annual rings is...
Resource Type:: Technical Report
Full Text:: SUMMERWOOD IN WIDE-RINGED, SECOND-GROWTH DOUGLAS-FIR No. i04li l)ecember 19lili RELATIONSHIP BETWEEN

Analysis of Douglas fir snag removal

Creator:: Sandoz, Fred J.
Resource Type:: Undergraduate Thesis
Full Text:: Analysis of Douglas fir snag removal ANALYSIS OF DOUGLAS

Stand improvement of Douglas fir

Creator:: Alexander, Lucien
Resource Type:: Undergraduate Thesis
Full Text:: Stand improvement of Douglas-fir . Stand Improvement of

Relative values of Douglas fir lumber

Creator:: Weed, Oscar F.
Resource Type:: Undergraduate Thesis
Full Text:: Relative values of Douglas fir lumber RELATIVE VALUES OF

Lichen as an indicator on Douglas-fir

Creator:: Lindsay, Robert C.
Resource Type:: Undergraduate Thesis
Full Text:: Lichen as an indicator on Douglas-fir Lichen as an

Douglas fir double grain lumber

Creator:: Ward, Vincent D.
Resource Type:: Undergraduate Thesis
Full Text:: . ( n a n ) --------------- 61 t DOUGLA$ FIR DOUBLJ GFAIN LUIVi3ER Dou1 Fir P1vood is i form of

Raising, harvesting, and selling Douglas fir as Christmas trees

Creator:: Burson, George S.
Resource Type:: Undergraduate Thesis
Full Text:: Raising, harvesting, and selling Douglas fir as Christmas

Utilization of Douglas fir bark

Creator:: Percival, Glenn R.
Resource Type:: Undergraduate Thesis
Full Text:: Utilization of Douglas Fir Bark ' th1 iíWy iL

The distribution and properties of the tannin in Douglas fir bark (Pseudotsuga taxifolia, Britt.)

Creator:: Hubbard, James Kenneth
Resource Type:: Masters Thesis
Full Text:: Fir bark (Psuedotsuga taxifolia, Britt.) THE D ISTRIBUTION AND PROPERTIES OF THE TANNIN IN DOU(VLS

Products obtained by destructive distillation of Douglas fir bark

Creator:: Subba Ratnam, Chaluvadi Venkata
Resource Type:: Masters Thesis
Full Text:: fir bark PRODUCTS OBTAINED BY DESTRUCTIVE DISTILLATION OF DOUGLAS FIR 3ARK by CHALUVADI VENFATA

Hydrogenation of solvent extracted Douglas fir lignin

Creator:: Olsen, Joseph Kent
Resource Type:: Masters Thesis
Full Text:: Hydrogenation of solvent extracted douglas fir lignin

The chemical nature of Douglas fir cork

Creator:: Hergert, Herbert Lawrence
Resource Type:: Masters Thesis
Full Text:: The chemical nature of Douglas fir cork THE CHEMICAL

Hydrogenation of Douglas Fir Pseudotsuga taxifolia, Britt., Wax

Creator:: Cho, Arthur Kenji
Resource Type:: Masters Thesis
Full Text:: Hydrogenation of douglas fir, Pseudotsuga taxifolia, Britt

Certain factors affecting establishment of the Douglas fir (Pseudotsuga taxifolia (Lamb.) Britt.) seedlings

Creator:: Owen, Herbert Elmer, 1925-
Resource Type:: Masters Thesis
Full Text:: fir (Pseudotsuga taxifolia (Lamb.) Britt.) seedlings AN ABSTRACT OF THE THESIS OF Qwn -_Mse Date

Structure and development of the bark of Douglas-fir, Pseudotsuga menziesii (Mirb.) Franco

Creator:: Grillos, Steve J.
Resource Type:: Dissertation
Full Text:: Structure and development of the bark of Douglas-fir

The effect of thiourea with and without heat on the breaking of dormancy and production of secondary dormancy in Douglas fir seeds

Creator:: Boonnitee, Aht
Resource Type:: Masters Thesis
Full Text:: breaking of dormancy and production of secondary dormancy in Douglas fir seeds THE EFFECT OF THIOTJREA

Racial variation in seedling development of Douglas fir, Pseudotsuga menziesii (Mirb.) Franco

Creator:: Owen, Herbert Elmer, 1925-
Resource Type:: Dissertation
Full Text:: Racial Variation in Seedling Development of Douglas Fir

The chemical composition of the extractives from the newly formed inner bark of Douglas Fir, Pseudotsuga menziesii (Mirb.) Franco

Creator:: Holmes, George William
Resource Type:: Dissertation
Full Text:: Formed Inner Bark of Douglas Fir, Pseudotsuga Menziesii (Mirb.) Franco THE CHEMICAL COÌIPOSITION OF THE

Early stages in plant succession on Douglas fir clearcuts on the Mary's Peak watershed near Corvallis, Oregon

Creator:: Brown, Eugene Allen
Abstract:: This study has been concerned with the patterns of vegetative changes which occur during the first five years following logging and burning on Douglas-fir clear cuts. Knowledge of the successional sequence in the coastal forests of western Oregon is of primary importance to those concerned with the management of this...
Resource Type:: Masters Thesis
Full Text:: Early stages in plant succession on Douglas fir clearcuts

The influence of seedbed microenvironments upon the establishment of Douglas fir (Pseudotsuga menziesii (Mirb.) Franco)

Creator:: Hermann, Richard K.
Resource Type:: Dissertation
Full Text:: establishment of douglas fir (Pseudotsuga menziesii (Mirb.) Franco) seedlings THE INFLUENCE OF SEEDBED

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