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Filtering by: Subject Salmonidae -- Effect of water levels on -- Oregon Remove constraint Subject: Salmonidae -- Effect of water levels on -- Oregon Non-Academic Affiliation Oregon State University. Graduate School Remove constraint Non-Academic Affiliation: Oregon State University. Graduate School

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Discharge and its consequences to physical habitat and trout populations in the Deschutes River of central Oregon

Creator:

Walks, Deborah J.

Resource Type:

Masters Thesis

Full Text:

animated. Water Temperature Response to Discharge Changes Effect of discharge on water temperature was
The effects of water and shade treatments on photosynthesis and root-rhizosphere respiration in young ponderosa pine

Creator:

Johnson, Theresa J.

Abstract:

Water treatments were applied to young ponderosa pine trees in the Eastern Cascades, Oregon during the 2003 growing season, and shade treatments were applied during the 2003 and 2004 growing seasons to understand how photosynthesis and soil respiration, particularly the root/rhizosphere fraction (R[subscript rrh]), would respond to increased moisture availability...

Resource Type:

Masters Thesis
Seasonal shifts in redband trout use of pools and their microhabitats in three central Oregon streams

Creator:

Hirsch, Christine L.

Abstract:

Redband trout density was examined in three forested streams in central Oregon at two scales, pool channel unit and microhabitat. Two streams were in roadless areas and one was in a "highly managed" watershed. At the larger spatial scale, trout displayed a seasonal shift in habitat use from early to...

Resource Type:

Masters Thesis

Full Text:

1 Location of study sites on the Ochoco National Forest, Oregon. 10 2. Locations of cross
Comparison of the water relations characteristics of woody plants in western Oregon

Creator:

Davis, Kent J.

Abstract:

I studied the water relations traits, twig conductivity, C'3 isotopic composition, and wood density of three conifer and five angiosperm species in western Oregon. This study took place from spring 2002 to fall 2003 on four sites. Species were selected to represent the diversity of drought tolerance of woody plants...

Resource Type:

Masters Thesis

Full Text:

Water Relations Characteristics of Woody Plants in Western Oregon. Abstract approved Donald B.Zobe
A bioeconomic analysis of altering instream flows anadromous fish production and competing demands for water in the John Day River basin, Oregon

Creator:

Johnson, Neal S.

Abstract:

The growing demand for water in the arid regions of the West increases the need for optimal allocation of water among competing uses. An efficient allocation of water between instream and out-of-stream uses has been impeded by institutional constraints and the scarcity of information regarding instream flow benefits. The objectives...

Resource Type:

Masters Thesis

Full Text:

pattern on the North Fork John Day River at Monument, Oregon, water year 1975-76. 79 LIST OF TABLES
The Impacts of Multiple Stressors on Aquatic Invertebrate Communities in the Umatilla River

Creator:

Clark, Hannah

Abstract:

Rivers impacted by human activities often have multiple stressors present. The effects of multiple stressors on biological communities can often be difficult to predict, due to the potential for complex interactions between stressors and communities. This thesis explores the impacts of two stressors often associated with agricultural land use, increased...

Resource Type:

Masters Thesis

Full Text:

of both single and multiple stressors (fine sediment addition and reduced water discharge) on
Continuous monitoring and modeling to assess pesticide exposure in critical habitat for Pacific salmonids

Creator:

Janney, Philip K.

Abstract:

Pacific Northwest and California freshwater resources are key elements in the life history and ecology of Pacific salmon and steelhead listed as threatened or endangered under the Endangered Species Act. Risk to listed Pacific salmonid species can be assessed by evaluating the spatial and temporal co-occurrence of salmonid species at...

Resource Type:

Dissertation

Full Text:

/L) by continuous PSD surface water monitoring in the current study; Oregon Department of
The effects of irrigation water withdrawals on macroinvertebrate community structure and life history strategies

Creator:

Miller, Scott W.

Abstract:

I used current water management practices in central and eastern Oregon and Washington as natural experiments to quantify the effects of irrigation water withdrawals on macroinvertebrate community structure and life history strategies. Reduced discharge had direct (e.g. decreased velocity and wetted habitat) and indirect (e.g. increased conductivity and temperature) effects...

Resource Type:

Dissertation

Full Text:

wholly or partly dependent on irrigation. Over 90% of irrigation water for Oregon farms comes from
Seasonal floodplain wetlands as fish habitat in Oregon and Washington

Creator:

Baker, Cynthia F.

Abstract:

To begin to understand freshwater seasonal floodplain fish communities in the context of human alteration of the physical system, species introductions and wetland restoration efforts, I studied fish assemblages in fifteen seasonal floodplain wetlands within four geographic regions (coastal, upper Columbia River estuary, Puget Sound and eastern Oregon/Washington) in the...

Resource Type:

Dissertation

Full Text:

surface of native, cold-water fish functional group. .................... 136 30. Trap sites in Oregon
Aquatic insect adaptations to different flow regimes

Creator:

Yamamuro, Asako Melody

Abstract:

My thesis explored the effects of environmental variability on population dynamics and community composition of aquatic insects. Environmental variability in the form of flow regime in streams can limit the distribution and life-history traits of aquatic insects. I used tributaries to the McKenzie River in Oregon with dramatically different flow...

Resource Type:

Dissertation

Full Text:

. Rose. 2006. Influence of volcanic history on groundwater patterns on the west slope of the Oregon High

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Academic Affiliation

Fisheries and Wildlife5
Agriculture and Resource Economics1
Botany and Plant Pathology1
Environmental and Molecular Toxicology1
Forest Science1
more Academic Affiliations »

Advisor

Wooster, David2
Adams, Richard M.1
Grant, Gordon E.1
Jenkins, Jeffrey J.1
Law, Beverly E.1
more Advisors »

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1988 to 2017

View distribution

Committee Member

McCune, Bruce2
Tullos, Desiree2
Andersen, Christian1
Anderson, Kim A.1
Blouin, Michael S1
more Committee Members »

Creator

Baker, Cynthia F.1
Clark, Hannah1
Danner, Allison G.1
Davis, Kent J.1
Hirsch, Christine L.1
more Creators »

Date

Date range begin – Date range end

Current results range from 1987 to 2016

View distribution

Decade

2010-20193
2000-20095
1990-19992
1980-19891

Degree Field

Fisheries Science5
Agricultural and Resource Economics1
Botany and Plant Pathology1
Forest Science1
Toxicology1
more Degree Fields »

Degree Level

Master's7
Doctoral4

Degree Name

Master of Science (M.S.)7
Doctor of Philosophy (Ph.D.)4

File Format

application/pdf1

Language

English [eng]11

License

All rights reserved8

Non-Academic Affiliation

Oregon State University. Graduate School[remove]11

Peer Reviewed

No11

Resource Type

Masters Thesis7
Dissertation4

Rights Statement

In Copyright8
Copyright Not Evaluated3

Subject

Streamflow -- Oregon -- McKenzie River Watershed2
Agriculture -- Environmental aspects -- Oregon -- Umatilla River1
Climatic changes -- Oregon -- Cougar Dam1
Climatic changes -- Oregon -- Cougar Reservoir1
Climatic changes -- Oregon -- McKenzie River Watershed1
more Subjects »

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