Index Catalog // ScholarsArchive@OSU

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

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

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

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

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

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

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

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

ScholarsArchive@OSU

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Temperature effects on the growth of Douglas-fir seedlings

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

Root biomass studies of old-growth Douglas-fir

Computer simulation of Douglas-fir tree and stand growth

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