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Filtering by: Subject Forest ecology Remove constraint Subject: Forest ecology Subject Douglas fir Remove constraint Subject: Douglas fir

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Early stages in plant succession on Douglas fir clearcuts on the Mary's Peak watershed near Corvallis, Oregon

Creator:

Brown, Eugene Allen

Abstract:

This study has been concerned with the patterns of vegetative changes which occur during the first five years following logging and burning on Douglas-fir clear cuts. Knowledge of the successional sequence in the coastal forests of western Oregon is of primary importance to those concerned with the management of this...

Resource Type:

Masters Thesis
Silvicultural impacts of sheep grazing in Oregon's Coast Range

Creator:

Leininger, Wayne C.

Abstract:

A three-year investigation was conducted during 1980-1982 to evaluate the potential of using herded sheep as a silvicultural tool to suppress brush in Douglas-fir (Pseudotsuga menziesii) plantations of Oregon's Coast Range. Sheep browsing of Douglas-fir was highest in May soon after bud break. Averaged over the 2 years of grazing,...

Resource Type:

Dissertation
Juvenile development of Douglas-fir, red alder and snowbrush associations in Western Oregon

Creator:

El Hassan, Babiker Ahmed

Abstract:

The juvenile development of Douglas-fir, red alder and snowbrush associations was investigated in western Oregon. The relationship between Douglas-fir and red alder was studied and compared in the Coast, Willamette Valley and Cascade regions. Snowbrush- Douglas-fir stands were sampled in the western Cascades. Alder- Douglas-fir relationships were studied on clearcuts...

Resource Type:

Masters Thesis
Assessing the influence of silvicultural practices on Douglas-fir nutrition and stemwood production

Creator:

Reid, Paula W.

Abstract:

Nitrogen, phosphorus and sulfur concentrations were measured in the soil, foliage and litter of Douglas-fir growing in pure Douglas-fir and mixed conifer stands. On four sites of contrasting fertility and climatic conditions, plots had been modified by the introduction of alder, thinning, or by a single application of nitrogen fertilizer...

Resource Type:

Masters Thesis

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Academic Affiliation

Botany1
Forest Management1
Forest Science1
Rangeland Resources1

Advisor

Chilcote, W. W.1
Newton, Michael1
Sharrow, Steven H.1
Tarrant, Robert1

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1963 to 1984

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Committee Member

Bedell, T. E.1
Beschta, R. L.1
Emmingham, W. H.1
Horton, H. F.1
Krueger, W. C.1

Creator

Brown, Eugene Allen1
El Hassan, Babiker Ahmed1
Leininger, Wayne C.1
Reid, Paula W.1

Date

Date range begin – Date range end

Current results range from 1963 to 1983

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Decade

1980-19892
1960-19692

Degree Field

Botany1
Forest Management1
Forest Science1
Rangeland Resources1

Degree Level

Master's3
Doctoral1

Degree Name

Master of Science (M.S.)3
Doctor of Philosophy (Ph.D.)1

Language

English [eng]4

Non-Academic Affiliation

Oregon State University. Graduate School4

Peer Reviewed

No4

Resource Type

Masters Thesis3
Dissertation1

Rights Statement

Copyright Not Evaluated4

Subject

Douglas fir[remove]4
Forest ecology[remove]4
Grazing1
Red alder1

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