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Filtering by: Committee Member Lajtha, Kate Remove constraint Committee Member: Lajtha, Kate Non-Academic Affiliation Oregon State University. Graduate School Remove constraint Non-Academic Affiliation: Oregon State University. Graduate School

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Artificial means of distinguishing smooth-line map unit boundaries : an examination of Oregon soil survey maps

Creator:

Sun, Yulin

Abstract:

Soil is a complex living system with high heterogeneity, which makes locating soil map boundaries a challenge. In traditional soil survey, the placement of soil map boundaries relies largely (at least initially) on identifying the soil-forming factors of biota and topographic relief through stereo aerial photo pairs. Future soil survey...

Resource Type:

Masters Thesis
Response of Soil Temperature, Moisture, and Respiration Two Years Following Intensive Organic Matter and Compaction Manipulations in Oregon Cascade Forests

Creator:

Gallo, Adrian Carlos

Abstract:

Forest soils contain a substantial portion of global terrestrial carbon stores. Forest management can influence the soil carbon pool and how soil organic matter functions. The long-term productivity of forests is an ongoing goal where land managers utilize biomass and timber. A site-specific understanding of intensively managed forests can ensure...

Resource Type:

Masters Thesis
Non-Destructive Detection and Monitoring of Durability Issues in Wood Panels under Accelerated-Weathering

Creator:

Laleicke, Paul Frederik

Abstract:

Many wood composites are known to poorly resist the effects of moisture and temperature extremes over time. Degradation of adhesive bonds, irreversible thickness swell and dimensional instability result in a decrease of properties and a possible failure of the material. Accelerated weathering has become an essential tool for assessment of...

Resource Type:

Dissertation
Hydrologic and Land Cover Effects on Sources and Fate of In-Stream Fluorescent Dissolved Organic Matter

Creator:

Lee, Baek Soo P.

Abstract:

Dissolved organic matter (DOM) is a critical component of the carbon cycle linking terrestrial and aquatic ecosystems. Although many factors influence DOM fluxes and quality in rivers, controls on DOM compositions in catchments of the western U.S. are poorly understood. UV and fluorescent spectroscopy is a simpler, faster, and less...

Resource Type:

Dissertation
Seasonality as a driving factor of decomposition pathways in both meadows and forests : an exploration across a gradient of climate in Oregon

Creator:

Colby, Samantha E.

Abstract:

Soil food webs process the majority of terrestrial carbon, and influence overall ecosystem function. A primary distinction among soil food webs is based on fungal versus bacterial pathways of decomposition; these lead to fundamentally different soil function, and are expected to differ in dominance between meadows and forests. This assumption...

Resource Type:

Masters Thesis
Wood-adhesive bondline analyses with micro x-ray computed tomography

Creator:

Paris, Jesse Loren

Abstract:

There is no doubt that adhesive penetration plays an important role in wood bondline joint performance and durability; yet, to date there is no direct experimental evidence linking penetration depth with bond performance. This is, in part, because adhesive penetration is commonly assessed with various 2D microscopy techniques that are...

Resource Type:

Dissertation
Functional profiles of soil microbial communities in second-growth Douglas-fir forests of the Pacific Northwest

Creator:

McGinnis, Megan L.

Abstract:

Forests are one of the largest repositories of terrestrial C. Understanding factors that drive organic matter transformations and nutrient efflux from these systems is therefore highly important. Temperate forests are of particular significance due to the large fraction of C that is stored below ground in the soil. Characterizing nutrient...

Resource Type:

Masters Thesis
Dose-effects relationships in non-human biota : development of field sampling, dosimetric and analytic techniques through a case study of the aquatic snail Campeloma decisum at Chalk River Laboratories

Creator:

Ruedig, Elizabeth B.

Abstract:

In the last decade regulatory bodies have begun to implement standards to protect populations of non-human biota (NHB) from the consequences of radiation exposure. This is a departure from previous regulatory frameworks which were concerned only with protecting man. The implementation of these new standards has started an ongoing discussion...

Resource Type:

Dissertation
Lower and Middle Devonian carbonate-platform and outer-shelf-basin deposits flanking Railroad Valley, Nevada

Creator:

Nelson, Storr L.

Abstract:

Lower and Middle Devonian strata crop out on the former stable carbonate platform that existed in the Quinn Canyon Range, through the carbonate shelf edge in the Pancake Range, to the carbonate slope and outer-shelf basin in the Reveille Range. The strata of the Reveille Range record a transition from...

Resource Type:

Masters Thesis
The effects of nitrogen manipulations and hydrology on the establishment and competitive abilities of wetland prairie plant species (western Oregon)

Creator:

Davis, Kimberly J.

Abstract:

Many studies suggest that weedy plant species are most successful when soil nitrogen in abundant. Consequently, I used soil nitrogen manipulations to determine if altering nitrogen would affect the establishment of both weedy and native plant species in a western Oregon wetland prairie. In two studies, we added carbon amendments...

Resource Type:

Dissertation

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Academic Affiliation

Crop and Soil Science5
Wood Science and Engineering4
Forest Engineering Resources and Management3
Forest Science3
Geosciences3
more Academic Affiliations »

Advisor

Myrold, David D.3
Kamke, Frederick A.2
Adams, Darius M.1
Borer, Elizabeth T.1
Campana, Michael E.1
more Advisors »

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1997 to 2017

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Committee Member

Lajtha, Kate[remove]25
Cromack, Kermit2
Kleber, Markus2
Myrold, David2
Swanson, Fred2
more Committee Members »

Creator

Benfield, Cara D.1
Brant, Justin B.1
Brewer, Elizabeth Ann1
Colby, Samantha E.1
Czabke, Jochen1
more Creators »

Date

Date range begin – Date range end

Current results range from 1996 to 2017

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Decade

2010-201911
2000-200912
1990-19992

Degree Field

Soil Science5
Forest Science3
Wood Science3
Botany and Plant Pathology2
Forest Resources2
more Degree Fields »

Degree Level

Doctoral13
Master's12

Degree Name

Doctor of Philosophy (Ph.D.)13
Master of Science (M.S.)12

File Format

application/pdf2

Language

English [eng]25

License

All rights reserved18

Location

Oregon, Oregon, United States, (Administrative Boundary)1

Non-Academic Affiliation

Oregon State University. Graduate School[remove]25

Peer Reviewed

No23

Resource Type

Dissertation13
Masters Thesis12

Rights Statement

In Copyright20
Copyright Not Evaluated5

Subject

Nitrogen cycle -- Oregon -- H.J. Andrews Experimental Forest2
Adhesives -- Imaging1
Albedo1
Biodegradation -- Oregon1
Buffer zones (Ecosystem management) -- Cascade Range1
more Subjects »

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