Index Catalog // ScholarsArchive@OSU

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

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

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

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

The response of individual Douglas-fir trees to applications of inorganic fertilizers

Creator:: Mason, Benjamin J.
Resource Type:: Masters Thesis

Some physiological effects of atrazine on Douglas-fir seedlings

Creator:: Peterson, Charles Adrian
Abstract:: This study was undertaken to ascertain some of the physiological effects of the herbicide atrazine on Douglas-fir seedlings. Photosynthetic and respirational rates were measured on seedlings grown in a controlled environment chamber. Height and dry weight increases, shoot/root ratios and percent total nitrogen were obtained from treated and control seedlings...
Resource Type:: Masters Thesis

Environmental and physiological control of stomates in Douglas-fir and other species

Creator:: Johnson, Jon Dale
Abstract:: This research dealt with the direct environmental influence of atmospheric vapor pressure on stomates of Pseudotsuga menziesii, Picea engelniannii, and Fragaria X ananassa, and the indirect physiological control of stomates by abscisic acid in Pseudotsuga menziesii. Two ventilated porometers (diffusion and steady-state) were compared on four broadleaf and five coniferous...
Resource Type:: Dissertation

The effect of age on transpiration rates of Douglas-fir seedlings (Pseudotsuga menziesii (Mirb.) Franco)

Creator:: Geppert, Rollin Roger
Abstract:: The objective of this study was to determine the effect of age on rates of transpiration by Douglas-fir seedlings. Seeds were collected from a xeric site (Goldendale, Washington) and a mesic site (Forks, Washington). The seedlings were grown in a cold frame and in a growth chamber for periods of...
Resource Type:: Masters Thesis

A model of forest nitrogen cycling to assess the effects of management intensity on long-term productivity in Douglas-fir forests of the Pacific Northwest

Creator:: Krzak, Joan
Abstract:: The objective of this study was to assess the effects of forest management intensity on long-term productivity of Pacific Northwest Douglas-fir forests. The components of management intensity included rotation length, timber utilization standard (whole tree or bole only), method of slash treatment (remove/burn or leave) and fertilization practice (urea nitrogen...
Resource Type:: Dissertation

The effect of plant moisture stress on the physiology and establishment of planted Douglas-fir and ponderosa pine seedlings

Creator:: Cleary, Brian D.
Abstract:: The role of moisture stress in seedling physiology and establishment was studied in both the field environment and laboratory experiments. Plant moisture stress was measured using the pressure chamber technique. This technique was modified and tested using a fascicle of pine needles as a sample, an improvement which allows the...
Resource Type:: Dissertation

ScholarsArchive@OSU

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

Some factors affecting Douglas-fir seedling growth and establishment

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)

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

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

The response of individual Douglas-fir trees to applications of inorganic fertilizers

Some physiological effects of atrazine on Douglas-fir seedlings

Environmental and physiological control of stomates in Douglas-fir and other species

The effect of age on transpiration rates of Douglas-fir seedlings (Pseudotsuga menziesii (Mirb.) Franco)

A model of forest nitrogen cycling to assess the effects of management intensity on long-term productivity in Douglas-fir forests of the Pacific Northwest

The effect of plant moisture stress on the physiology and establishment of planted Douglas-fir and ponderosa pine seedlings

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