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Filtering by: Alternative title ssim PNW 347 Remove constraint Alternative title ssim: PNW 347 Decade 1990-1999 Remove constraint Decade: 1990-1999 Degree Field Rangeland Resources Remove constraint Degree Field: Rangeland Resources

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Similarities in understory vegetation composition between unthinned, thinned and old-growth Douglas fir stands in western Oregon

Creator:

Mayrsohn, Cheryl

Abstract:

Forest stands were studied to determine if old-growth forest structure could be mimicked in younger stands via overstory manipulation. Cover and species composition of understory plants were systematically sampled in sixteen thinned second-growth stands and sixteen adjacent unthinned second-growth Douglas fir (Pseudotsuga menziesii (Mirabel) Franco.) stands. The stands were thinned...

Resource Type:

Masters Thesis
Interactions of cattle and chinook salmon

Creator:

Ballard, Teena M.

Abstract:

Spring chinook salmon spawning occurs in late summer when it is common for cattle to be present in pastures that have streams where fish spawning occurs. This two-year study addressed three main objectives relative to behavioral interactions between cattle and spring chinook salmon during the spawning life history stage. These...

Resource Type:

Masters Thesis
Understory vegetation response and nitrogen cycling following cutting of western juniper

Creator:

Bates, Jonathan D.

Abstract:

Since the late 1880's western juniper has expanded in range and increased in density in sagebrush-bunchgrass, riparian, and forested plant communities of the Pacific Northwest. Succession to western juniper woodland has been shown to reduce the productivity and diversity of the understory component, result in concentration of soil nutrients beneath...

Resource Type:

Dissertation
Relative palatabilities of Great Basin forages and mechanisms elicting selective grazing by cattle

Creator:

Cruz-Guerra, Ruben

Resource Type:

Masters Thesis
Vegetation composition and response to fire of native Willamette Valley wetland prairies

Creator:

Pendergrass, Kathy L. (Connelly)

Abstract:

Fires set by Native Americans were important in shaping and maintaining Willamette Valley prairie plant communities. With fire exclusion after Euro-American settlement in the 1840's, composition of the remaining prairies shifted toward shrub and tree dominance with a concomitant decline in endemic prairie plant populations. I hypothesize that by restoring...

Resource Type:

Masters Thesis

Full Text:

; Geoflora in PNW; Loss of species dependent on Late Pliocene-increasing ppt. and decreasing summer

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Academic Affiliation

Rangeland Resources5

Advisor

Doescher, Paul S.1
Ganskopp, David C.1
Kauffman, J. Boone1
Krueger, William C.1
Miller, Richard F.1
more Advisors »

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1995 to 2000

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Committee Member

Doescher, Paul2
Johnson, Douglas2
Buckman, Robert1
DelCurto, Tim1
Eddleman, Lee1
more Committee Members »

Creator

Ballard, Teena M.1
Bates, Jonathan D.1
Cruz Guerra, Ruben1
Mayrsohn, Cheryl1
Pendergrass, Kathy L. (Connelly)1

Date

Date range begin – Date range end

Current results range from 1994 to 1999

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Decade

1990-1999[remove]5

Degree Field

Rangeland Resources[remove]5

Degree Level

Master's4
Doctoral1

Degree Name

Master of Science (M.S.)4
Doctor of Philosophy (Ph.D.)1

File Format

pdf1

Language

English [eng]5

License

All rights reserved2

Non-Academic Affiliation

Oregon State University. Graduate School5

Peer Reviewed

No5

Resource Type

Masters Thesis4
Dissertation1

Rights Statement

In Copyright3
Copyright Not Evaluated2

Subject

Cattle -- Great Basin -- Food1
Chinook salmon -- Effect of habitat modification on -- Oregon1
Fire ecology -- Oregon -- Willamette River Valley1
Forage plants -- Great Basin -- Nutrition1
Forest ecology -- Cascade Range1
more Subjects »

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