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Filtering by: Alternative title ssim PNW 474 Remove constraint Alternative title ssim: PNW 474 Degree Field Botany and Plant Pathology Remove constraint Degree Field: Botany and Plant Pathology Degree Name Master of Science (M.S.) Remove constraint Degree Name: Master of Science (M.S.)

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Environmental factors influencing the rate of spread of Phellinus weirii (Murr.) Gilbertson in young-growth Douglas-fir

Creator:

Angwin, Peter A.

Abstract:

Studies to identify the environmental factors that influence the rate of ectotrophic mycelial growth of Phellinus weirii (Murr.) Gilbertson along Douglas-fir roots were undertaken both in the laboratory and in the field. The effects of soil pH, nitrogen, moisture, temperature, microorganisms and bulk density were investigated. In the lab, the...

Resource Type:

Masters Thesis
Trichoderma spp. : distribution in stumps infested with Phellinus weirii and growth and antagonism in vitro

Creator:

Goldfarb, Barry

Abstract:

To determine which isolates will most rapidly replace Phellinus weirii in stumps and roots, Trichoderma spp. were isolated from P. weirii-infested stumps and roots, identified, and examined for growth rates and lethal effects on P. weirii in vitro. Phellinus weirii-infested Douglas-fir stumps and stump roots were sampled for microorganisms by...

Resource Type:

Masters Thesis
Chaparral history, dynamics, and response to disturbance in southwest Oregon : insights from age structure

Creator:

Duren, Olivia

Abstract:

Fuels management on Bureau of Land Management lands in SW Oregon, USA, is motivated by the needs to reduce fire hazard and restore ecosystems thought to be impacted by fire suppression. Chaparral is one of the most characteristic vegetation communities of SW Oregon's interior valleys, and extensive acreages within this...

Resource Type:

Masters Thesis
Biosystematic studies of the Mimulus moschatus complex in the Pacific Northwest

Creator:

Meinke, Robert James

Abstract:

Populations of an unknown species of Mimulus, herein described as Mimulus hymenophyllus Meinke, were located and studied near Horse Creek, a tributary of the Snake River in eastern Wallowa County, Oregon. The new species is differentiated from its apparent closest relative, Mimulus jungermannioides Suksd., by an annual habit, long petioles,...

Resource Type:

Masters Thesis
Ecology and reproduction in Collomia macrocalyx Brand (Polemoniaceae)

Creator:

Joyal, Elaine

Abstract:

Populations of Collom ia macrocalyx Brand were located and observed in order to determine the distribution, ecology, and reproductive biology of this species and probable relationships to other members of the genus. The purpose of the study was to obtain information that would explain the restricted range of the species...

Resource Type:

Masters Thesis

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Academic Affiliation

Botany and Plant Pathology5

Advisor

Chambers, Kenton L.1
Frenkel, Robert E.1
Hansen, Everett1
Hansen, Everett M.1
Muir, Patricia1

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1984 to 2010

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Committee Member

Beatty, Joseph1
Chambers, Kenton1
Hibbs, David1
Lattin, Jack1
McCune, Bruce1

Creator

Angwin, Peter A.1
Duren, Olivia1
Goldfarb, Barry1
Joyal, Elaine1
Meinke, Robert James1

Date

Date range begin – Date range end

Current results range from 1983 to 2009

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Decade

2000-20091
1990-19991
1980-19893

Degree Field

Botany and Plant Pathology[remove]5

Degree Level

Master's5

Degree Name

Master of Science (M.S.)[remove]5

Language

English [eng]5

License

All rights reserved1

Non-Academic Affiliation

Oregon State University. Graduate School5

Peer Reviewed

No5

Resource Type

Masters Thesis5

Rights Statement

Copyright Not Evaluated4
In Copyright1

Subject

Ceanothus -- Effect of fires on -- Oregon -- Applegate River Watershed1
Ceanothus -- Effect of grazing on -- Oregon -- Applegate River Watershed1
Chaparral ecology -- Oregon -- Applegate River Watershed1
Douglas fir -- Diseases and pests1
Fuel reduction (Wildfire prevention) -- Oregon -- Applegate River Watershed1
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