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- Keyword
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- Aquatic ecology -- Research -- United States (2)
- Environmental monitoring -- Pacific Northwest (2)
- Invasive species (2)
- Cluster analysis (1)
- Coastal ecology -- Oregon (1)
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- Columbia Basin Project (U.S.) (1)
- Dam retirement -- California -- Lassen Volcanic National Park -- Case studies (1)
- Dam retirement -- Environmental aspects -- California -- Lassen Volcanic National Park -- Case studies (1)
- Earth temperature -- Mathematical models (1)
- Ecology (1)
- Ecology -- Research (1)
- Hedonic pricing (1)
- Human ecology (1)
- Irrigation -- Social aspects (1)
- Lakes Oregon (1)
- Marine ecology -- Pacific Coast (U.S.) (1)
- Mathematical statistics (1)
- Pacific Ocean -- Environmental conditions (1)
- Probabilities (1)
- Real property -- Valuation -- Oregon -- Yamhill County (1)
- Revegetation -- California -- Lassen Volcanic National Park -- Case studies (1)
- Rural and use -- Oregon -- Yamhill County -- Planning (1)
- Soil restoration -- California -- Lassen Volcanic National Park -- Case studies (1)
- Sustainable development (1)
- Washington (State) -- Salmon Creek Watershed (Okanogan County) (1)
- Water quality (1)
- Water quality -- Washington (State) -- Salmon Creek Watershed (Clark County) (1)
- Water resources development -- Columbia River Watershed (1)
- Publication
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- Environmental Science and Management Faculty Publications and Presentations (3)
- Center for Lakes and Reservoirs Publications and Presentations (2)
- Geography Faculty Publications and Presentations (2)
- Dissertations and Theses (1)
- Environmental Science and Management Professional Master's Project Reports (1)
- Publication Type
Articles 1 - 9 of 9
Full-Text Articles in Physical Sciences and Mathematics
Soil Development And Vegetation Response To Removal Of A Small Dam, Lassen Volcanic National Park, California, Stephanie Kay Rohdy
Soil Development And Vegetation Response To Removal Of A Small Dam, Lassen Volcanic National Park, California, Stephanie Kay Rohdy
Dissertations and Theses
Dam removal is increasing as dams age, yet little is understood about the pedogenic response to dam removal. This study reports on the edaphic changes of reservoir sediments and vegetation cover one year following removal of a small earthen dam in Northern California. In August 2012, I sampled surface sediments from the former Dream Lake reservoir in Lassen Volcanic National Park, and compared their physical and chemical properties with soil samples from two reference sites. I also estimated percent cover of vegetation in the former reservoir and reference sites. My results show that the reservoir was under reduced conditions, as …
Getting Salmon Back In Salmon Creek: Systematizing Comparative Water Quality Analysis For Targeted Restoration, Zbigniew J. Grabowski, Sarah Janjua, Michael Swamer, Heejun Chang, Eric Watson
Getting Salmon Back In Salmon Creek: Systematizing Comparative Water Quality Analysis For Targeted Restoration, Zbigniew J. Grabowski, Sarah Janjua, Michael Swamer, Heejun Chang, Eric Watson
Geography Faculty Publications and Presentations
This presentation focuses on water quality restoration efforts in Salmon Creek
Emerging Contaminants In Oregon Coastal Waters: Hotspots, Landscape Drivers And Synergistic Effects On Bivalves, Elise F. Granek, William Fish, Angela L. Strecker
Emerging Contaminants In Oregon Coastal Waters: Hotspots, Landscape Drivers And Synergistic Effects On Bivalves, Elise F. Granek, William Fish, Angela L. Strecker
Environmental Science and Management Faculty Publications and Presentations
This presentation focuses on the following research questions:
- Types and levels of contaminants of emerging concern (CECs) in Oregon’s coastal ocean?
- Levels of CECs in native and commercial oysters?
- Ecological effects (growth, reproductive output, etc.) of these contaminants in marine bivalves?
Effects Of Water Development On Arid Land Freshwater Ecosystems, Angela L. Strecker
Effects Of Water Development On Arid Land Freshwater Ecosystems, Angela L. Strecker
Environmental Science and Management Faculty Publications and Presentations
This presentation focuses on the Columbia Basin Project
Classifying Reanalysis Surface Temperature Probability Density Functions (Pdfs) Over North America With Cluster Analysis, Paul C. Loikith, Benjamin R. Lintner, Jinwon Kim, Huikyo Lee
Classifying Reanalysis Surface Temperature Probability Density Functions (Pdfs) Over North America With Cluster Analysis, Paul C. Loikith, Benjamin R. Lintner, Jinwon Kim, Huikyo Lee
Geography Faculty Publications and Presentations
An important step in projecting future climate change impacts on extremes involves quantifying the underlying probability distribution functions (PDFs) of climate variables. However, doing so can prove challenging when multiple models and large domains are considered. Here an approach to PDF quantification using k-means clustering is considered. A standard clustering algorithm (with k = 5 clusters) is applied to 33 years of daily January surface temperature from two state-of-the-art reanalysis products, the North American Regional Reanalysis and the Modern Era Retrospective Analysis for Research and Applications. The resulting cluster assignments yield spatially coherent patterns that can be broadly related to …
Portland-Vancouver Ultra-Ex: Evaluating Relationships Between Governance And Environmental Quality In Urban Ecosystems, J. Alan Yeakley, Sally Duncan, Steve Bollens, Connie P. Ozawa, Vivek Shandas, Heejun Chang, Marion Dresner, Sean N. Gordon, John A. Harrison, Jeffrey D. Kline, Anita T. Morzillo, Noelwah R. Netusil, Gretchen Rollwagen-Bollens, Mark Stephan, Paul R. Thiers
Portland-Vancouver Ultra-Ex: Evaluating Relationships Between Governance And Environmental Quality In Urban Ecosystems, J. Alan Yeakley, Sally Duncan, Steve Bollens, Connie P. Ozawa, Vivek Shandas, Heejun Chang, Marion Dresner, Sean N. Gordon, John A. Harrison, Jeffrey D. Kline, Anita T. Morzillo, Noelwah R. Netusil, Gretchen Rollwagen-Bollens, Mark Stephan, Paul R. Thiers
Environmental Science and Management Faculty Publications and Presentations
The Portland-Vancouver Urban Long Term Research Area (ULTRA-Ex) is a multidisciplinary project aimed at understanding the feedbacks between human and natural systems in urban settings. The ULTRA-Ex project is seeking to answer the overarching question: How do human governance and biophysical systems respond interactively to both press and pulse disturbances in urban socio-ecological systems?
This presentation provides early observations and findings from the PV ULTRA-Ex project.
Aquatic Invasive Plant Surveys In The Blm Medford District During 2012, Rich Miller, Vanessa Morgan, Mark D. Sytsma
Aquatic Invasive Plant Surveys In The Blm Medford District During 2012, Rich Miller, Vanessa Morgan, Mark D. Sytsma
Center for Lakes and Reservoirs Publications and Presentations
Aquatic plant surveys were conducted at 22 waterbodies located within the Bureau of Land Management’s Medford District during the summer of 2012. Sites included eleven lakes, ponds or reservoirs and six reaches along the Rogue and Applegate Rivers. Five sampling areas surveyed during 2010 and 2011 were revisited to determine the extent of known non-native species infestations, positively identify rare species, or verify the absence of an expected non-native species. Plant specimens were collected at up to 50 sites at each waterbody using plant rakes or by observation. The non-native submersed species curly leaf pondweed (Potamogeton crispus) and …
Aquatic Invasive Species Surveys Of Upper Klamath Lake, Fourmile Lake, And Lake Of The Woods, Or During 2012, Rich Miller, Mark D. Sytsma
Aquatic Invasive Species Surveys Of Upper Klamath Lake, Fourmile Lake, And Lake Of The Woods, Or During 2012, Rich Miller, Mark D. Sytsma
Center for Lakes and Reservoirs Publications and Presentations
Three lakes located within the Klamath River Basin in Oregon (Upper Klamath Lake, Fourmile Lake, and Lake of the Woods) were surveyed for aquatic invasive species during the summer of 2012. Specimens were collected using plant rakes, benthic dredges, plankton nets, and crayfish traps. No invasive aquatic plants, gastropods, snails, bivalves or crayfish were detected in the lakes.
Understanding The Drivers Of Forest, Residential, And Agricultural Land Values In Yamhill County Using Hedonic Models, Emily D. Dietrich
Understanding The Drivers Of Forest, Residential, And Agricultural Land Values In Yamhill County Using Hedonic Models, Emily D. Dietrich
Environmental Science and Management Professional Master's Project Reports
Hedonic modeling is commonly used in land and property value estimations in an attempt to identify the impact that various attributes have on the market value of that property. The purpose of this study is to examine the factors contributing to land value of agricultural, forest, and residential properties in Yamhill County, as part of the Spatial Ecosystem Services Analysis, Modeling, and Evaluation (SESAME, http://www.pdx.edu/ecosystem-services/) project. This paper discusses the process and preliminary results of the development of hedonic models that will be utilized for predicting land value changes under future land conversion scenarios. Applying the models to future scenarios …