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Filtering by: Subject Douglas fir -- Deterioration Remove constraint Subject: Douglas fir -- Deterioration Committee Member Boyle, Jim Remove constraint Committee Member: Boyle, Jim

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Carbon and nitrogen allocation patterns of 2-0 Douglas-fir seedlings following nitrogen fertilization in the autumn

Creator:

Margolis, Hank A.

Abstract:

Douglas-fir (Pseudotsuga menziesii Mirb. Franco) seedlings at a nursery in western Oregon were fertilized with nitrogen in October. Free amino acid (FAA) and total nitrogen concentrations in needles, stems and fine roots were followed from before fertilization until just prior to budbreak the following spring. Before budbreak in mid-March, the...

Resource Type:

Dissertation
Genetic variation of wood density components in coastal Douglas- fir and their relationships to growth rhythm

Creator:

Vargas-Hernandez, Jesus

Abstract:

Overall wood density is a complex trait resulting from the interaction of three components: average earlywood density, average latewood density, and latewood proportion. In order to better understand the genetic control of wood density in juvenile Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco), and to assess the utility of information on its...

Resource Type:

Dissertation
Fifth-year growth responses of Douglas-fir to crowding and other competition

Creator:

Cole, Elizabeth C.

Abstract:

This thesis examines the competitive aspects of Douglas-fir trees growing with two commonly associated competitors--red alder and grass--at varying densities. Two Nelder plots in three different environments in the Oregon Coast Range were studied. The sites represented the warm, dry climate of the Willamette Valley; the warm, moist climate of...

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Masters Thesis
Water relations and associated morphology of conditioned Douglas-fir and jack pine seedlings subjected to periods of drought stress

Creator:

McClain, K. M.

Abstract:

Significant post planting mortality of young conifer seedlings often occurs on drought prone sites because seedlings fail to either establish, or maintain favourable water relations. Survival is contingent upon growth which occurs when turgor pressure is above a threshold level. Since growth after planting is influenced by nursery cultural practices,...

Resource Type:

Dissertation
Factors influencing growth of young Douglas-fir and red alder in the Oregon Coast Range : interference, nitrogen availability, and animal damage

Creator:

Fuentes-Rodríquez, Laura Angélica

Abstract:

Red alder (Alnus rubra Bong.) is a common associate and a potentially severe competitor of Douglas-fir (Pseudotsuga menziesii var. menziesii [Mirb.] Franco) in the Oregon Coast Range. However, because it fixes nitrogen and increases rates of soil nutrient cycling, red alder has the potential to benefit Douglas-fir. The objective of...

Resource Type:

Masters Thesis
Comparing structure and development of Douglas-fir old-growth, plantations, and young natural forests in western Oregon

Creator:

Dowling, Christopher D.

Abstract:

Ages, diameter growth, density, tree size, and species were studied in old-growth, plantation, and young natural Douglas-fir stands in three areas in western Oregon: the western and eastern Coast Range and the western Cascades. The purpose was to compare the development of these three stand types and to determine whether...

Resource Type:

Masters Thesis

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Academic Affiliation

Forest Science5
Forest Resources1

Advisor

Adams, W. Thomas1
Harrington, Timothy B.1
Lavender, Denis P.1
Newton, Michael1
Tappeiner, John C.1
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Commencement Year

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Current results range from 1984 to 2004

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Committee Member

Boyle, Jim[remove]6
Duryea, Mary2
Newton, Mike2
Childs, Stuart1
Hermann, Richard1
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Creator

Cole, Elizabeth C.1
Dowling, Christopher D.1
Fuentes Rodriquez, Laura Angelica1
Margolis, Hank A.1
Mcclain, K. M.1
more Creators »

Date

Date range begin – Date range end

Current results range from 1984 to 2003

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Decade

2000-20091
1990-19992
1980-19893

Degree Field

Forest Science4
Forest Ecology1
Forest Resources1

Degree Level

Doctoral3
Master's3

Degree Name

Doctor of Philosophy (Ph.D.)3
Master of Science (M.S.)3

Language

English [eng]6

License

All rights reserved1

Non-Academic Affiliation

Oregon State University. Graduate School6

Peer Reviewed

No3

Resource Type

Dissertation3
Masters Thesis3

Rights Statement

Copyright Not Evaluated5
In Copyright1

Subject

Douglas fir2
Douglas fir -- Aging -- Genetic aspects1
Douglas fir -- Coast Ranges -- Growth1
Douglas fir -- Growth1
Douglas fir -- Oregon -- Growth1
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