Index Catalog // ScholarsArchive@OSU

Identifying site characteristics that explain variation in Douglas-fir site productivity and stem form

Creator:: Magalska, Lauren E.
Abstract:: Foresters care about site productivity and stem quality in Douglas-fir plantations for many reasons. The profitability of forest land and the economic returns on silvicultural investments are directly related to site productivity. Thus, understanding the relationships among Douglas-fir productivity, stem form and site characteristics is important economically. My objective was...
Resource Type:: Masters Thesis
Full Text:: variation in Douglas- fir productivity and stem form throughout western Oregon and Washington by using

The effects of stand density on the growth and microclimate of young Douglas-fir stands

Creator:: Woodruff, David R.
Abstract:: My objectives were to investigate the correlation of height and diameter growth in young Douglas-fir (Pseudotsuga menziesii) plantations with stand density, and to determine the effects of stand density on the canopy boundary layer conductance (g[subscript]ac) and microclimate characteristics of young Douglas-fir plantations. I measured annual height (h) and diameter...
Resource Type:: Masters Thesis
Full Text:: Density on the Growth and Microclimate of Young Douglas-fir Stands. Abstract Approved: ___ S_ig~n_a_tu

Interference dynamics in mixed red alder/Douglas-fir forests

Creator:: D'Amato, Anthony W.
Abstract:: This study characterized the nature and dynamics of interference in mixed red alder (Alnus rubra Bong.)/Douglas-fir (Pseudotsuga menziesii [Mirb.] Franco) stands in the Pacific Northwest, USA. Long-term spatial and tree measurements from the Cascade Head (CH) and H.J. Andrews (HJA) Experimental Forests in western Oregon and Delezene Creek (DC), Washington...
Resource Type:: Masters Thesis
Full Text:: ) Experimental Forests in western Oregon and Delezene Creek (DC), Washington were utilized to investigate

Height-related trends in structure and function of Douglas-fir foliage

Creator:: Woodruff, David R.
Abstract:: This dissertation investigated the impacts of tree height upon a range of physiological and structural characteristics of Douglas-fir foliage; relationships between structural and functional trends with height; and compensatory mechanisms that mitigate height-related growth constraints. Height-related trends in foliar physiological and anatomical characteristics were examined both within trees as well...
Resource Type:: Dissertation
Full Text:: fraction in relation to height for five old-growth Douglas-fir trees accessible from the canopy crane

Effect of plant date on subsequent seedling field performance

Creator:: Taylor, Michael Monroe
Abstract:: Douglas-fir (Psudotsuga menziesii (Mirb.) Franco) seedlings were outplanted on eight dates (every three weeks from mid-August 2005 through mid-January 2006). On each plant date, seedlings from a conventional dormancy (CONV) induction treatment, including moisture and nutrient stress, and a shortened daylength (SD) treatment were outplanted on three western Oregon sites...
Resource Type:: Masters Thesis
Full Text:: Douglas-fir and western larch seedlings in Eastern Washington. Of particular interest was the

Evaluating the effectiveness of commonly used herbaceous weed control regimes in a Pacific Northwest conifer plantation

Creator:: Dinger, Eric
Abstract:: Early in the establishment of Pacific Northwest conifer plantations, herbaceous weeds often decrease seedling growth through competition for soil moisture during the dry summer months. Critical period studies have reported that reductions in competitive weed cover are necessary during the initial years of establishment to avoid reductions in seedling growth....
Resource Type:: Masters Thesis
Full Text:: to understand Douglas-fir seedling growth response. First season results demonstrate that seedling

The analysis of the spatial attack pattern of an endemic Douglas-fir beetle population

Creator:: Hedden, Roy L., Gara, Robert I., U.S. International Biological Program. Coniferous Forest Biome, and University of Washington
Abstract:: The attack spatial pattern of the Douglas-fir beetle, Dendroctonus pseudotsugae Hopkins was shown to be regular within a given subarea of bark on its host, Pseudotsugae menziesii (Mirb.) Franco. Empirical arguments were advanced which indicated the uniform spacing of attacks was the result of a beetle controlled spacing mechanism dependent...
Resource Type:: Technical Report
Full Text:: , second-growth, Douglas-fir trees, and to test the effect of selected treatments on attack pattern and

The analysis of the attack distribution of an endemic Douglas-fir beetle population

Creator:: Hedden, Roy L., Gara, Robert I., U.S. International Biological Program. Coniferous Forest Biome, and University of Washington
Abstract:: Felled second-growth Douglas-fir trees in western Washington were used to determine the attack distribution and develop a sampling technique for an endemic Douglas-fir beetle, Dendroctonue peeudotaugae Hopk. (Coleoptera: Scolytidae) population. The attack density varied by circumferential position. The lowest density was on the upper bole and the highest on one...
Resource Type:: Technical Report
Full Text:: Douglas-fir trees in western Washington. Thus recognizing the Importance of the Douglas-fir beetle in the

Forest planting in the Douglas-fir region

Creator:: Kum̈mel, Julius Frank, Rindt, Charles A., 1903-, Munger, Thornton T. (Thornton Taft), 1883-, and United States. Forest Service
Resource Type:: Other
Full Text:: Forest Service of the Douglas -fir cone crop in western Oregon and Washington indicates (25) that in the

The combined effects of vegetation control and seedling size class on Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) seedling productivity on a site in Oregon

Creator:: Lefebvre, Robert F.
Abstract:: Controlling competing vegetation with the application of herbicides and increased seedling size at planting has been shown to increase seedling survival and growth. These two important reforestation tools have often been studied independently of each other, limiting comparisons that can be made between them. This study utilized a factorial treatment...
Resource Type:: Masters Thesis
Full Text:: ) reported that maximum Douglas-fir seedling growth potential is achieved when ratios are in the high 40s

ScholarsArchive@OSU

Identifying site characteristics that explain variation in Douglas-fir site productivity and stem form

The effects of stand density on the growth and microclimate of young Douglas-fir stands

Interference dynamics in mixed red alder/Douglas-fir forests

Height-related trends in structure and function of Douglas-fir foliage

Effect of plant date on subsequent seedling field performance

Evaluating the effectiveness of commonly used herbaceous weed control regimes in a Pacific Northwest conifer plantation

The analysis of the spatial attack pattern of an endemic Douglas-fir beetle population

The analysis of the attack distribution of an endemic Douglas-fir beetle population

Forest planting in the Douglas-fir region

The combined effects of vegetation control and seedling size class on Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) seedling productivity on a site in Oregon

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