Index Catalog // ScholarsArchive@OSU

The influence of distance and floral phenology on pollen gene flow and mating system patterns in a coastal Douglas-fir seed orchard

Creator:: Erickson, Vicky J., 1955-
Resource Type:: Masters Thesis

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

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

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

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

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

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

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

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

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

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

The effects of inbreeding and supplemental mass pollination upon seed yields in a Douglas-fir seedling seed orchard

Creator:: Cress, Daniel W.
Abstract:: Effects of four inbreeding levels (F = 0, 0.125, 0.25, 0.5) and two supplemental mass pollination (SMP) methods (agitation of naturally shedding pollen with "air blaster" and pollen application from large "pollen wand" atomizer) were evaluated on seed of trees from eleven full-sibling Douglas-fir (Pseudotsuga menziesii [Mirb.] Franco) families in...
Resource Type:: Masters Thesis

Genetic variation in shoot-growth patterns of Douglas-fir populations from southwest Oregon

Creator:: Kaya, Zeki
Abstract:: This study had three objectives: (1) to teat the hypothesis that multiple flushing of the terminal shoot (intermittent growth pattern) in Douglas-fir seedlings (Pseudotsuca menziesii var. menziesii) has an adaptive significance, especially in inland populations from the drier regions in southwest Oregon; (2) to evaluate the genetic and adaptive consequences...
Resource Type:: Dissertation

Patterns of genetic variation within and among breeding zones of Douglas-fir in southwest Oregon

Creator:: Loopstra, Carol Anne
Abstract:: Three hundred fifty families from 11 breeding zones in southwest Oregon were grown in a common garden in Corvallis, Oregon, and patterns of genetic variation for seed weight and six first-year seedling characteristics were described. For most characteristics, large differences among breeding zones were found along an east-west transect, with...
Resource Type:: Masters Thesis

Factors affecting inter-tree root contact and the transmission of Phellinus weirii in young-growth Douglas-fir

Creator:: Reynolds, Keith M.
Abstract:: Groups of second-growth Douglas-fir (Mirb.) Franco were excavated in plots of two to six trees on two sites in the vicinity of Cowichan Lake, Vancouver Is., British Columbia. Eleven excavation plots provided 36 trees which could be studied in pairs (a total of 50 pairs) in order to ascertain the...
Resource Type:: Masters Thesis
Full Text:: transmission of Phellinus weirii in young-growth Douglas-fir AN ABSTRACT OF THE THESIS OF Keith Morgan

Characterization of lignocellulose decomposition in stream wood samples using ¹⁴C and ¹⁵N techniques

Creator:: Aumen, Nicholas G.
Resource Type:: Dissertation
Full Text:: lignocellulolytic activity of the microbial community on a Douglas fir log (Pseudotsuga menziesii) in a Pacific

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