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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

Creator:: Dealy, J. Edward
Abstract:: Cercocarpus ledifolius (curlleaf mountain- mahogany), a small, hardwood evergreen tree, was studied to provide information on germination and initial seedling growth characteristics, and the species' relationship to its environment.and associated vegetation. Exceptional germination for this species resulted from both a wet cold treatment at 4°C for 170 days (88 percent),...
Resource Type:: Dissertation

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

Creator:: Alden, John Norman
Abstract:: The relative freezing resistance of tissues in the stem, foliage and buds of terminal twigs from Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) was investigated at about ten-day intervals from summer until the following spring. Tissues from growing twigs collected before development of dormancy had no freezing resistance and were killed immediately...
Resource Type:: Dissertation

Creator:: Askren, Catherine Anita
Abstract:: Oscilloscope display of modification of a square wave signal passed through stem tissue was evaluated as a means of detecting depth of dormancy and survival potential of coniferous seedlings. Trace form did not change during release from deep dormancy in Douglas fir. This release was judged by observing speed of...
Resource Type:: Masters Thesis

Creator:: Kraemer, James Fred
Abstract:: The succession of plants over a period of 25 years was analyzed on clearcut areas in the western Cascades of Washington and Oregon. Thirty-three paired burned and unburned plots were reexamined in 1975. Data were combined with records from prior examinations by Morris (1970). Cover trends of six major brush...
Resource Type:: Masters Thesis

Creator:: Greenlaw, Charles Frederic III
Resource Type:: Masters Thesis
Full Text:: Backscattering from Marine Zooplankton Abstract approved: Richard }(L iJohnson Target strengths for preserved

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