Index Catalog // ScholarsArchive@OSU

Leaf resistance responses in selected conifers interpreted with a model simulating transpiration

Creator:: Running, Steven William
Abstract:: The resistance of a leaf to molecular gaseous diffusion is an important physiological response. Control of leaf resistance enables a plant to control its transpired water loss and regulates photosynthesis. Four study sites representing a gradient in available moisture and evaporative demand, were chosen in western Oregon for the study...
Resource Type:: Masters Thesis

An alternative to clearcutting

Creator:: Logan, Robert S. (Robert Steven), 1945-
Abstract:: Clearcutting is a sound silvicultural practice when exercised in the proper environmental location. Foresters have learned through bitter experience that clearcutting Douglas-fir forests, located on droughty south-facing slopes, often leaves uncorrectable regeneration problems. Thousands of acres of unproductive grass and brush throughout the Douglas-fir region are unavoidable reminders of inappropriate...
Resource Type:: Masters Thesis

Conifer growth and plant distribution under diffferent light environments in the Siskiyou Mountains of southwestern Oregon

Creator:: Emmingham, William H.
Abstract:: In a mountainous region of southwestern Oregon where temperature, moisture and nutritional status of forest communities have already been classified, the influence of tight upon conifer growth and plant distribution was investigated. Light, measured in calories cm day' (400-700 nm) during clear summer days was used as an index to...
Resource Type:: Masters Thesis

Stand sapwood basal area : an indicator of tree vigor

Creator:: Oren, Ram
Abstract:: The control that stand leaf area exerts upon individual tree vigor was tested on a heterogeneous, even-aged Douglas-fir stand infected by Phellinus root rot. Tree vigor, or growth efficiency ratio, was defined as the current basal area growth per unit of leaf area. Because of a close relationship between sapwood...
Resource Type:: Masters Thesis

Monoterpene composition : response to stress in lodgepole pine seedlings

Creator:: Hyland, Steven Coolidge
Abstract:: Lodgepole pine seedlings were used to test a general hypothesis of how water and nitrogen stress affect a plants' monoterpene composition. Four treatments, consisting of high and low levels of both water and nitrogen, were applied to the trees. Growth measurements, consisting of shoot and needle lengths, needle fresh weights...
Resource Type:: Masters Thesis

Selective filtering of light by coniferous forests and minimum light energy requirements for regeneration

Creator:: Atzet, Thomas
Abstract:: Spectroradiometric analyses were made to examine the light filtering capacity of coniferous forests and to establish the lower light energy limits for growth of Pseudotsuga menziesii (Mirb. ) Franco, Abies concolor (Gord. and Glend.) Lindi. and Pinus ponderosa Dougi. Visible energy(400-750 nm) was recorded at 48 points under four mixed...
Resource Type:: Masters Thesis

A comparison of English placement test and retest scores

Creator:: Prindle, Audry Shirley
Resource Type:: Masters Thesis
Full Text:: ACKNOWLED OEMENT The writer wishes to express her sincere gratitude to Dr. H. R. Laslett, professor of

The reading abilities of students in methods of study classes

Creator:: Stephens, Mildred Benson
Resource Type:: Masters Thesis
Full Text:: Tuo writer WiShEfl to make ratoful aoknowledgment to Dr. Herbert R. Laslett for his mndisDensable

The predictive value of the Stanford scientific and the Engineering and physical science aptitude tests

Creator:: Cooprider, Harold Arthur
Resource Type:: Masters Thesis
Full Text:: SCIENCE July 19k7 p, ,, ç't Fk1 f., r' t'u11m f)o. F ¡qjci APPROVED: Acting Dean, School of

The management of student exchanges in the Portland, Oregon, high schools

Creator:: Flood, Elizabeth O'Brien
Resource Type:: Masters Thesis
Full Text:: Comrittee Dean of Graduate School ALGM1NTS The writer wishes to express her gratitude to Dr. H. R

ScholarsArchive@OSU

Leaf resistance responses in selected conifers interpreted with a model simulating transpiration

An alternative to clearcutting

Conifer growth and plant distribution under diffferent light environments in the Siskiyou Mountains of southwestern Oregon

Stand sapwood basal area : an indicator of tree vigor

Monoterpene composition : response to stress in lodgepole pine seedlings

Selective filtering of light by coniferous forests and minimum light energy requirements for regeneration

A comparison of English placement test and retest scores

The reading abilities of students in methods of study classes

The predictive value of the Stanford scientific and the Engineering and physical science aptitude tests

The management of student exchanges in the Portland, Oregon, high schools

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