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Filtering by: Committee Member Appleby, Arnold Academic Affiliation Forest Management

Nutrient losses and nitrogen mineralization on forested watersheds in Oregon's Coast Range

Creator:

Miller, James H.

Abstract:

Nutrient losses of the biologically responsive anions, nitrate and bicarbonate together with the major cations, were monitored on 14 small watersheds in Oregon's Coast Range and evaluated in relation to management-induced disturbance. Mixed forests of Douglas-fir and red alder had dominated these high-nitrogen sites prior to treatment. A paired-watershed experimental...

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
Summer soil moisture dynamics in a young Douglas-fir plantation as influenced by three herbaceous weed communities

Creator:

Preest, David Stanley

Abstract:

The use of chemicals such as the triazines (especially atrazine) and mixtures of the triazines and 2,4-D or 2,4,5-T has become almost standard practice in some parts of the world for selectively controlling grasses and other herbaceous weeds to conserve moisture for and/or prevent the smothering of newly-planted conifers. In...

Resource Type:

Masters Thesis