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Filtering by: Funding statement This research was supported by the NASA Terrestrial Ecology Program (NNX09AL51G). Remove constraint Funding statement: This research was supported by the NASA Terrestrial Ecology Program (NNX09AL51G). Committee Member Jones, Julia Remove constraint Committee Member: Jones, Julia

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Reactive polyphenols and dissolved nutrients in a nitrogen-limited headwater catchment, western Cascades, Oregon, USA

Creator:

Rasmussen, Janet K.

Abstract:

In undisturbed N-limited forested catchments, DON may represent over 90% of the total N lost in streams. Some ecologists have suggested that plant-derived reactive polyphenols may be responsible for DON binding and transport because polyphenol-protein complexes are known to precipitate out of solution, bind to mineral surfaces or organic matter...

Resource Type:

Masters Thesis

Full Text:

Forest research program, funded by the National Science Foundation’s Long-Term Ecological Research
The influence of biophysical feedbacks and species interactions on grass invasions and coastal dune morphology in the Pacific Northwest, USA

Creator:

Zarnetske, Phoebe Lehmann

Abstract:

Biological invasions provide a unique opportunity to study the mechanisms that regulate community composition and ecosystem function. Invasive species that are also ecosystem engineers can substantially alter physical features in an environment, and this can lead to cascading effects on the biological community. Aquatic-terrestrial interface ecosystems are excellent systems to...

Resource Type:

Dissertation

Full Text:

placed on the Endangered Species List (USFWS 2007). Much of this dissertation research was prompted by
Predicting the stability, equilibrium response, and nonequilibrium dynamics of ecological systems

Creator:

Hosack, Geoffrey R.

Abstract:

In this dissertation, new theory and its applications are developed to predict three properties of complex ecological communities: stability, equilibrium response, and non-equilibrium dynamics. First, a graph-theoretic analysis identifies the interconnections in a complex ecosystem that promote or diminish stability (Chapter 2). The hierarchy of interactions that influences stability and...

Resource Type:

Dissertation

Full Text:

following authors contributed to the writing and research design of this dissertation: Hiram Li (Chapter 2
Watershed-level patterns among stream amphibians in the Blue River watershed, West-Central Cascades of Oregon

Creator:

Hunter, Matthew G.

Abstract:

Most recent research on stream amphibians in the Pacific Northwest has focused on associations with reach-level or stand-level environmental features. Little is known about landscape-level distributions of these species or landscape-level aspects of their life-histories. I used a watershed-wide sample and logistic regression to develop models and maps of probability...

Resource Type:

Masters Thesis

Full Text:

reader upon request. Matthew G. Hunter, Author ACKNOWLEDGMENTS Funding for this work was provided by
Central place foraging and the winter village: a settlement pattern analysis in the lower Salmon River Canyon in Idaho

Creator:

Carlisle, Kendra

Abstract:

Hunter-gatherers depend on naturally occurring resources and, in order to survive, must overcome resource procurement challenges inherent in their environment. One challenge relates to the temporal and spatial availability of resources, which hunter-gatherers address, in part, through the strategic use of space to position themselves for optimal access to necessary...

Resource Type:

Masters Thesis

Full Text:

by this GIS method are well suited for evaluation by future archaeological survey. The
Community gradients of Arctic macrolichens in relation to succession, grazing and the environment

Creator:

Holt, Emily A.

Abstract:

The purpose of this dissertation was to define macrolichen community gradients in relation to succession, grazing and the environment. First, species scores indicating when macrolichen species appeared following disturbance were derived from the literature. Weighted averaging of these data with a community matrix created a successional score for each sample...

Resource Type:

Dissertation

Full Text:

Objectives The purpose of this research was to explore patterns in lichen community structure in BELA
Spatio-temporal Patterns and Ecological Drivers of Harbor Porpoise (Phocoena phocoena) off the Central Oregon Coast, USA

Creator:

Holdman, Amanda

Abstract:

The marine environment is under increasing pressure from human activities worldwide, particularly in coastal waters, creating a need to better understand fine-scale distributions of highly mobile species that occur in the area, as they are frequently most threatened. Harbor porpoise (Phocoena phocoena) occur frequently in Oregon’s nearshore habitat, but due...

Resource Type:

Masters Thesis

Full Text:

off the coast of Newport, OR was dedicated as a wave energy test-bed to be operated by the Northwest
Range-use estimation and encounter probability for juvenile Steller sea lions (Eumetopias jubatus) in the Prince William Sound-Kenai Fjords region of Alaska

Creator:

Meck, Stephen R.

Abstract:

Range, areas of concentrated activity, and dispersal characteristics for juvenile Steller sea lions Eumetopias jubatus in the endangered western population (west of 144° W in the Gulf of Alaska) are poorly understood. This study quantified space use by analyzing post-release telemetric tracking data from satellite transmitters externally attached to n...

Resource Type:

Masters Thesis

Full Text:

of a larger ongoing research program). Range-use was first estimated by using the minimum convex
Developing a plan for the national coordination of geospatial technology education : a community college perspective

Creator:

Sullivan, Deidre E.

Abstract:

Geospatial technology is a rapidly growing and changing field. The term geospatial technology (GST) refers to geographical information systems (GIS), global positioning systems (GPS), and remote sensing (RS), all emerging technologies that assist the user in the collection, analysis, and interpretation of spatial data. The speed at which new fields...

Resource Type:

Capstone Project

Full Text:

$700 billion by the year 2017 (Research & Consultancy Outsourcing Services, 2005). The U.S
Multiscale assessment of thermal patterns and the distribution of chinook salmon in the John Day River Basin, Oregon

Creator:

Torgersen, Christian E.

Abstract:

This study examined the distribution and behavior of adult spring chinook salmon (Oncorhynchus tshawytscha) related to patterns of stream temperature and physical habitat at channel unit, reach, and basin-wide spatial scales in both a wilderness stream and a disturbed stream in the John Day River basin in northeastern Oregon. Thermal...

Resource Type:

Masters Thesis

Full Text:

the success of this research experience to numerous colleagues and friends who have knowingly, and

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Academic Affiliation

College of Earth, Ocean, and Atmospheric Sciences4
Fisheries and Wildlife4
Forest Science2
Integrative Biology2
Zoology2
more Academic Affiliations »

Advisor

Lajtha, Kate2
Li, Hiram W.2
Santelmann, Mary2
Arnold, Stevan J.1
Blouin, Michael S.1
more Advisors »

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1997 to 2024

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Committee Member

Jones, Julia[remove]23
Gregory, Stan2
Torres, Marta2
Arnold, Stevan1
Bailey, John1
more Committee Members »

Creator

Allan, Andrea M.1
Bury, Gwendolynn W.1
Carlisle, Kendra1
Chellew, Megan1
Dickey, Jacob C.1
more Creators »

Contributor

Flitcroft, Rebecca1
King, Jasmine1
Novak, Mark1
Peck, Erin1
Santelmann, Mary1
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Date

Date range begin – Date range end

Current results range from 1996 to 2024

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Decade

2020-20294
2010-201911
2000-20096
1990-19992

Degree Field

Geography4
Fisheries Science3
Forest Science3
Zoology3
Water Resources Science2
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Degree Level

Doctoral13
Master's10

Degree Name

Doctor of Philosophy (Ph.D.)13
Master of Science (M.S.)9
Master of Arts (M.A.)1

File Format

application/pdf5

Language

English [eng]23

License

All rights reserved20

Non-Academic Affiliation

Oregon State University. Graduate School18

Peer Reviewed

No21

Resource Type

Dissertation13
Masters Thesis9
Capstone Project1

Rights Statement

In Copyright21
Copyright Not Evaluated2

Subject

Amphibians -- Ecology -- Oregon -- Blue River Watershed1
Amphibians -- Geographical distribution -- Oregon -- Blue River Watershed1
Animal population genetics -- Washington (State) -- Olympic Mountains1
Atmospheric carbon dioxide -- Oregon -- H.J. Andrews Experimental Forest -- Measurement1
Biodiversity -- Statistical methods1
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