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Filtering by: Contributor advisor sim Waring, R. H. Resource Type Masters Thesis

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