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Filtering by: Alternative title ssim Range plant leaflet 66 Remove constraint Alternative title ssim: Range plant leaflet 66 Academic Affiliation Botany and Plant Pathology Remove constraint Academic Affiliation: Botany and Plant Pathology Committee Member McCune, Bruce Remove constraint Committee Member: McCune, Bruce

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The Role of Intraspecific Functional Trait Variation in the Differential Decline of Meadow Species Following Conifer Encroachment

Creator:

Celis, Jessica

Abstract:

In the Oregon Cascade Range, conifer encroachment has reduced the extent of mountain meadows by as much as 50% since the mid-1940s. Although encroachment results in a general decline of meadow species abundance and diversity, species differ in their sensitivities to encroachment: some show rapid declines whereas others persist in...

Resource Type:

Masters Thesis

Full Text:

(1948-2000), Oregon Coast Range, USA. Plant Ecology 201:517-529. 9
Understory herb and shrub responses to root trenching, pre-commercial thinning, and canopy closure in Douglas-fir forest of the western Cascades, Oregon

Creator:

Lindh, Briana C.

Abstract:

This thesis examines factors limiting understory herb presence and flowering in young second-growth Douglas-fir (Pseudotsuga menziesii) forests on the west side of the Cascade Mountains, Oregon, USA. I studied the belowground effects of canopy trees on understory herbs and shrubs in old-growth forests using trenched plots from which tree roots...

Resource Type:

Dissertation

Full Text:

degree of Doctor of Philosophy in Botany and Plant Pathology presented on May 23, 2003. Title: Understory
The fate of organic and inorganic nitrogen inputs in an old-growth forest of the central Oregon Cascade Range

Creator:

Holub, Scott M.

Abstract:

Forests in the Pacific Northwest receive very little nitrogen through atmospheric deposition and thus studying the nitrogen cycle in this region can provide insights into how the unpolluted nitrogen cycle functions. I examined the fate of organic nitrogen versus inorganic nitrogen and the effect of tamlins on N retention by...

Resource Type:

Dissertation

Full Text:

degree of Doctor of Philosohy in Botany and Plant Pathology presented on June 6, 2002. Title: The Fate of
Performance of Willamette Valley native plants following herbicide exposure

Creator:

Blakeley-Smith, Matthew R.

Abstract:

Prairies were once the dominant vegetation type in Oregon's Willamette Valley. Land use conversion, fire suppression, succession, and invasive species have reduced Willamette Valley prairies to less than 1% of their historical area. The remnant prairies that persist today are small in size and are highly fragmented. Marginal strips of...

Resource Type:

Masters Thesis

Full Text:

the degree of Master of Science in Botany and Plant Pathology presented on November 17, 2006. Title
Developing models to predict favorable environments for rice blast

Creator:

Calvero, Silvino B.

Abstract:

Statistical analyses were used to develop predictive models of rice blast and to relate the favorability of environment to disease incidence and severity on different rice cultivars at five sites in Asia. The WINDOW PANE program was used to search for weather factors highly correlated with blast. Stepwise and r-square...

Resource Type:

Masters Thesis

Full Text:

in Botany and Plant Pathology presented on April 26, 1994. Title: Developing Models to Predict
Pendent Usnea (Lichens; Ascomycetes; Parmeliaceae) in Western Oregon : taxonomy; morphological characters; and geographical distribution

Creator:

Pittam, Sherry K.

Abstract:

Pendent Usnea species were collected in western Oregon and examined. Character states, such as cortex-medulla-axis ratio; fibril length; papilla diameter; branching patterns; and presence or absence of fibrils, papillae, soredia, isidia; plus chemistry, were recorded and analyzed by inspection for differences. Historical names were researched in the literature. A comparison...

Resource Type:

Masters Thesis

Full Text:

of Master of Science in Botany and Plant Pathology presented on 14 March 1995. Title: Pendent Usnea
Characterization of fungal and bacterial communities associated with mat-forming ectomycorrhizal fungi from old-growth stands in the H.J. Andrews Experimental Forest

Creator:

Hesse, Cedar N.

Abstract:

Mat-forming ectomycorrhizal (EcM) fungi represent a prevalent constituent of many temperate forest ecosystems and create dramatic changes in soil structure and chemistry. EcM mat soil have been shown to have increased microbial respiration rates and have been hypothesized to harbor unique assemblages of fungi and bacteria. The objectives of this...

Resource Type:

Dissertation

Full Text:

Botany and Plant Pathology presented on May 17, 2012. Title: Characterization of Fungal and
Stand structures of Oregon white oak (Quercus garryana) woodlands and their relationships to the environment in southwestern Oregon

Creator:

Gilligan, Laurie A.

Abstract:

Large areas of non-coniferous communities in southwestern Oregon are thinned to reduce fire hazard and accomplish ecosystem restoration, under the assumption that current fuel loads are unnaturally high. Although Oregon white oak (Quercus garryana) woodlands are a characteristic landscape component in this region, little is known about their current or...

Resource Type:

Masters Thesis

Full Text:

2. NMS stand structural matrix variables, and range across sites. ............................... 66
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

Full Text:

Duren for the degree of Master of Science in Botany and Plant Pathology presented on May 15, 2009
Biological Soil Crusts of the Great Basin : An Examination of their Distribution, Recovery from Disturbance and Restoration

Creator:

Condon, Lea A.

Abstract:

We are at risk of losing the sagebrush steppe in the floristic Great Basin to the invasion of Bromus tectorum L., cheatgrass. The floristic Great Basin includes the Central Basin and Range, the Northern Basin and Range, and the Snake River Plain. The Great Basin receives most of its precipitation...

Resource Type:

Dissertation

Full Text:

. Condon for the degree of Doctor of Philosophy in Botany and Plant Pathology presented on May 4, 2016

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Academic Affiliation

Botany and Plant Pathology[remove]12

Advisor

Muir, Patricia S.2
Busby, Posy E.1
Coakley, Stella M.1
Denison, William C.1
Frost, Kenneth1
more Advisors »

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1994 to 2023

View distribution

Committee Member

McCune, Bruce[remove]12
Arp, Daniel J.1
Bailey, John1
Bond, Barbara1
Bottomley, Peter1
more Committee Members »

Creator

Blakeley Smith, Matthew R.1
Calvero, Silvino B.1
Carson, Adam1
Celis, Jessica1
Condon, Lea A.1
more Creators »

Date

Date range begin – Date range end

Current results range from 1994 to 2022

View distribution

Decade

2020-20292
2010-20194
2000-20094
1990-19992

Degree Field

Botany and Plant Pathology12

Degree Level

Master's8
Doctoral4

Degree Name

Master of Science (M.S.)8
Doctor of Philosophy (Ph.D.)4

Language

English [eng]12

License

All rights reserved9

Non-Academic Affiliation

Oregon State University. Graduate School10

Peer Reviewed

No12

Resource Type

Masters Thesis8
Dissertation4

Rights Statement

In Copyright10
Copyright Not Evaluated2

Subject

Ascomycetes -- Oregon -- Classification1
Atheliaceae -- Oregon -- H.J. Andrews Experimental Forest1
Ceanothus -- Effect of fires on -- Oregon -- Applegate River Watershed1
Ceanothus -- Effect of grazing on -- Oregon -- Applegate River Watershed1
Chaparral ecology -- Oregon -- Applegate River Watershed1
more Subjects »

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