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Filtering by: Alternative title ssim Forest statistics for County, Oregon Remove constraint Alternative title ssim: Forest statistics for County, Oregon Degree Field Botany and Plant Pathology Remove constraint Degree Field: Botany and Plant Pathology File Format application/pdf Remove constraint File Format: application/pdf

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Conservation of Oenothera wolfii (Onagraceae) : introducing a threatened plant into two protected locations in Oregon

Creator:

Currin, Rebecca E.

Abstract:

The showy biennial to short-lived perennial Oenothera wolfii (Munz) Raven, Dietrich & Stubbe (Wolf’s evening primrose) occurs in only a small number of isolated populations on the southern Oregon and northern California coast. This rare species is currently listed as Threatened in Oregon, and is considered a Species of Concern...

Resource Type:

Masters Thesis

Full Text:

OF THE THESIS OF Rebecca E. Currin for the degree of Master of Science in Botany and Plant
Yield responses of invasive grasses to carbon doses

Creator:

Brunson, Jessi L.

Abstract:

The sagebrush steppe ecosystem of the northern Great Basin is severely degraded and continues to decline due in large part to the invasive, non-native annual grasses Bromus tectorum L. (cheatgrass) and Taeniatherum caput-medusae (L.) Nevski (medusahead). Restoration of invasive-dominated areas is difficult, but can be enhanced by adding a carbon...

Resource Type:

Masters Thesis

Full Text:

. Brunson for the degree of Master of Science in Botany and Plant Pathology presented on January 15, 2008
Salt marsh reestablishment following dike breaching in the Salmon River estuary, Oregon

Creator:

Mitchell, Diane Lynne

Abstract:

A 22 ha, 1S yeas old, diked permanent pasture in the Salmon River estuary in Lincoln County, Oregon, was chosen for a study to determine the potential for natural salt marsh restoration with dike breaching. Two undiked fragments of relatively undisturbed salt marsh, one at each end of the study...

Resource Type:

Dissertation

Full Text:

estuary in Lincoln County, Oregon, was chosen for a study to determine the potential for natural salt
The effects of site preparation on native forb establishment in a wet prairie, Willamette Valley, Oregon

Creator:

Norman, Katherine N.

Abstract:

Wetlands and wet prairies are economically and environmentally valuable ecosystems, but many have been degraded or converted to other uses. As human understanding of wetlands' value has increased, restoration efforts have grown correspondingly. Restoration attempts use a diversity of methods, which often include seeding with native plant species. This thesis...

Resource Type:

Masters Thesis

Full Text:

Oregon State University in partial fulfillment of the requirements for the degree of
Plant communities and succession in Oregon coastal salt marshes

Creator:

Jefferson, Carol A.

Abstract:

The purpose of this study was to determine plant species composition, community structure, successional relationships, vegetational development and plant distributions in estuarine salt marshes on the Pacific Coast of Oregon. Quadrat and transect samples of plant presence and cover, collected from April 1971 - June 1974, were subjected to phytosociological...

Resource Type:

Dissertation

Full Text:

were mapped for 16 major Oregon estuaries. Total undiked salt marsh area in Oregon is 29 km, an area
Serpentine and non-serpentine edaphic ecology and the recovery of Lomatium cookii (Apiaceae), an endangered endemic of southwest Oregon

Creator:

Silvernail, Ian S.

Abstract:

The role of unusual geologies in plant distribution and form is well-known. Serpentine (ultramafic) soils exert a particularly strong influence on plants, as evidenced by a high level of endemism and the morphological and physiological traits displayed in adaptation to the extraordinary chemistry of these substrates. Adaptation may lead to...

Resource Type:

Masters Thesis

Full Text:

State of Oregon. The two population centers for the species are geographically isolated, with several
Distributional patterns and taxonomic structure of diatom assemblages in Netarts Bay, Oregon

Creator:

Whiting, Mark Carlos

Abstract:

Epiphytic, planktonic and benthic diatom assemblages were investigated in Netarts Bay, Oregon. Samples were collected for a one-year period from February 1980 to March 1981. A planktonic flora was observed only during periods of offshore enrichment when marine neritic species were abundant and were transported into the bay by tidal...

Resource Type:

Dissertation

Full Text:

investigated in Netarts Bay, Oregon. Samples were collected for a one-year period from February 1980 to March
Responses and relationships among Fusarium species, sweet corn, and western spotted cucumber beetles

Creator:

Miller, Nathan L. (Nathan Louis)

Abstract:

Sweet corn (Zea mays L.) yields in the Willamette Valley of Oregon have been declining since the early 1990’s. Studies were done to determine if there is a relationship between ear weight and several disease parameters including necrotic crowns or stalk nodes, nodal root rot, radicle root rot, and sub-crown...

Resource Type:

Dissertation

Full Text:

county, sampling dates, and the number of sweet corn plants evaluated for xylem conductance
Biology of sweet cherry powdery mildew

Creator:

Calabro, Jill M.

Abstract:

The Pacific Northwest has become one of the nation’s premier sweet cherry, Prunus avium, production areas. As production of sweet cherries has flourished in Oregon and Washington, so has powdery mildew, caused by the fungus Podosphaera clandestina, which infects both foliage and fruit causing severe economic damage to growers. Sweet...

Resource Type:

Dissertation

Full Text:

THESIS OF Jill M. Calabro for the degree of Doctor of Philosophy in Botany and Plant Pathology
New perspectives on evolutionary relationships within Pinus (Pinaceae) and within subsection Ponderosae (subgenus Pinus)

Creator:

Willyard, Ann Nachreiner

Abstract:

A fossil-calibrated phylogenetic framework based on exemplars from each of the four taxonomic sections within Pinus was created using multiple nuclear and chloroplast loci. Calibration at the well-defined subgeneric split within Pinus with either fossil leaves and cones (ca. 45 million years ago) or fossil wood (ca. 85 million years...

Resource Type:

Dissertation

Full Text:

. ................................... 38 2.S3 Tree statistics and likelihood ratio tests for each locus and each concatenated data set

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Academic Affiliation

Botany and Plant Pathology14

Advisor

Chilcote, William W.1
Cronn, Richard C.1
Franklin, Jerry F.1
Hansen, Everett M.1
Liston, Aaron1
more Advisors »

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1975 to 2008

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Committee Member

Muir, Patricia3
Kaye, Thomas2
Bottomley, Peter1
Braunworth, Bill1
Cronn, Richard1
more Committee Members »

Creator

Alexander, J. Andrew1
Brunson, Jessi L.1
Calabro, Jill M.1
Currin, Rebecca E.1
Holt, Emily A.1
more Creators »

Date

Date range begin – Date range end

Current results range from 1974 to 2008

View distribution

Decade

2000-200911
1980-19892
1970-19791

Degree Field

Botany and Plant Pathology[remove]14

Degree Level

Doctoral8
Master's6

Degree Name

Doctor of Philosophy (Ph.D.)8
Master of Science (M.S.)6

File Format

application/pdf[remove]14

Language

English [eng]14

License

All rights reserved9

Non-Academic Affiliation

Oregon State University. Graduate School14

Peer Reviewed

No11

Resource Type

Dissertation8
Masters Thesis6

Rights Statement

In Copyright11
Copyright Not Evaluated3

Subject

Phytophthora ramorum2
Astragalus (Plants) -- Classification1
Astragalus (Plants) -- Phylogeny1
Cheatgrass brome -- Control -- Idaho -- Canyon Creek (Elmore County)1
Cheatgrass brome -- Control -- Oregon -- Lincoln Bench1
more Subjects »

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