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Filtering by: Advisor Hermann, Richard K. Subject Douglas fir

First year survival and growth of planting stock of various size on adverse sites

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
Root biomass studies of old-growth Douglas-fir

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
Freezing resistance of tissues in the twig of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco)

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