Index Catalog // ScholarsArchive@OSU

Proof-of‐Concept : Automated high‐frequency measurements of PCO₂ and TCO₂ and real‐time monitoring of the saturation state of calcium carbonate

Creator:: Vance, Jesse M.
Abstract:: The rapid increase in atmospheric carbon dioxide (CO₂) over the last 250 years has led to the absorption of approximately 550 billion tons of anthropogenic CO₂ by the global ocean. This oceanic uptake of CO₂ has resulted in decreasing pH and alterations to carbonate chemistry, threatening many ecologically and economically...
Resource Type:: Capstone Project
Full Text:: . ACKNOLEDGEMENTS I would like to thank Burke Hales for the guidance and

High-resolution Carbonate Dynamics of Netarts Bay, OR from 2014 - 2019

Creator:: Fairchild, William M.
Abstract:: Netarts Bay is a shallow, temperate, tidal lagoon located on the northern coast of Oregon and site of the Whiskey Creek Shellfish Hatchery (WCSH). Data collected with an automated flow-through system installed at WCSH capable of high-resolution (1 Hz) pCO2 and hourly TCO2 measurements, with measurement uncertainties of <2.0% and...
Resource Type:: Masters Thesis
Full Text:: : ______________________________________________________ Burke Hales Netarts Bay is a shallow, temperate, tidal lagoon located on the

Professional Development Training in Ocean Acidification: A Case Study of Marine Resource Managers

Creator:: Moses, Michael L.
Abstract:: Ocean acidification (OA) is the result of increasing concentrations of anthropogenic carbon dioxide (CO₂) emissions, leading to a suite of alterations to specific parameters of ocean chemistry, which can negatively impact many marine organisms and ecosystems. Understanding how to measure and monitor the chemistry of OA will require specialized education...
Resource Type:: Masters Thesis
Full Text:: : ______________________________________________________ Burke R. Hales Ocean acidification (OA) is the result of increasing concentrations of

Autonomous in situ measurements of estuarine surface PCO₂ : instrument development and initial estuarine observations

Creator:: Wall, Colleen McKay
Abstract:: A novel, low-cost instrument capable of measuring surface water PCO₂ was designed for use in dynamic, shallow-water environments. The instrument was tested in the Yaquina River Estuary, a macrotidal estuary known to experience a wide range of conditions ranging from dominance by the coastal ocean during summer upwelling to substantial...
Resource Type:: Masters Thesis
Full Text:: : ______________________________________________________ Burke R. Hales A novel, low-cost instrument capable of measuring surface water PCO2 was

Effects of Teaching Household Actions to Address Ocean Acidification on Student Knowledge and Attitudes

Creator:: Erickson, Brian D.
Abstract:: Ocean acidification (OA), the change in ocean chemistry due to increasing concentrations of anthropogenic carbon dioxide in the atmosphere, is an environmental problem that is an active area of scientific research yet remains largely outside of the public’s awareness. It is often assumed that if we raise OA awareness, then...
Resource Type:: Masters Thesis
Full Text:: project it has become. To you, Tracy Crews, Flaxen Conway, and Burke Hales, my words do not adequately

Insights from stable isotope dynamics into the sensitivity of larval Pacific oysters to ocean acidification

Creator:: Brunner, Elizabeth Lev
Abstract:: Larvae of the Pacific Oyster, Crassostrea gigas, at Whiskey Creek Shellfish Hatchery (WCH) in Netarts Bay, Oregon, are negatively impacted by high-CO₂ water and exposure during the initial shell formation period appears to be particularly damaging. To investigate the mechanism of this early susceptibility, several cohorts of larvae at WCH...
Resource Type:: Masters Thesis
Full Text:: . I also want to thank my CEOAS committee members Dr. Burke Hales and Dr. Fred Prahl for all their

Dynamic seascapes : a quantitative framework for scaling pelagic ecology and biogeochemistry

Creator:: Kavanaugh, Maria T.
Abstract:: Understanding and modeling microbial responses and feedbacks to climate change is hampered by a lack of a framework in the pelagic environment by which to link local mechanism to large scale patterns. Where terrestrial ecology draws from landscape theory and practice to address issues of scale, the pelagic seascape concept...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Maria T

Ocean acidification stress index for shellfish (OASIS): Linking Pacific oyster larval survival and exposure to variable carbonate chemistry regimes

Creator:: Hales, Burke, Gimenez, Iria, and Waldbusser, George G.
Abstract:: Understanding larval bivalve responses to variable regimes of seawater carbonate chemistry requires realistic quantification of physiological stress. Based on a degree-day modeling approach, we developed a new metric, the ocean acidification stress index for shellfish (OASIS), for this purpose. OASIS integrates over the entire larval period the instantaneous stress associated...
Resource Type:: Article
Full Text:: chemistry regimes Iria Gimenez, George G. Waldbusser and Burke Hales Understanding larval bivalve responses

Concentration-Runoff Relationships of Contrasting Small Mountainous Rivers in the Pacific Northwest, USA: Insights into the Weathering of Rhenium

Creator:: Ghazi, Layla
Abstract:: This study examines dissolved rhenium (Re) as a function of water runoff using river samples from two contrasting watersheds, the Eel and Umpqua Rivers in the Pacific Northwest, USA. These watersheds share many key characteristics in terms of size, discharge, climate, and vegetation, but they have a 10-fold difference in...
Resource Type:: Masters Thesis
Full Text:: , and Beth Rutila for assisting with analyses conducted in the Keck Lab; William Fairchild, Burke

Investigating rotating microelectrodes for rapid in situ detection of oxygen

Creator:: Chace, Peter J.
Abstract:: Rotating disc electrodes (RDEs) exploit the induced flushing of a radially spun electrode to increase the overall rate of analyte flux to an electrode sensing surface and its resulting signal current (i). Here initial efforts to evaluate a rotating platinum (Pt) microelectrode for efficacy as a rapid in situ dissolved...
Resource Type:: Masters Thesis
Full Text:: would also like to thank my committee members, Drs. Burke Hales, Jonathan Fram and grad rep Julie

Seagrasses as Potential Chemical Refugia for Acidification-Sensitive Bivalves

Creator:: Smith, Stephanie Rae
Abstract:: As the effect of ocean acidification (OA) on marine calcifiers is better understood, a range of potential mitigative strategies have been proposed, many of which are plagued by concerns of scale and feasibility. One oft-cited option is to increase the biomass of photosynthetic organisms to remove CO₂ from the water...
Resource Type:: Masters Thesis
Full Text:: , ever. Also, on the subject of guidance, I must thank Burke Hales, who, I feel, has mastered the

Buffering Estuarine Sediments Against Acidification

Creator:: Myers, Tristen J.
Abstract:: Globally rising anthropogenic CO₂ emissions have resulted in the increased prevalence of ocean acidification (OA) which has the potential to impact shell-forming organisms. On geologic timescales, the largest contributor to atmospheric CO₂ was volcanoes, counterbalanced by weathering and erosion, but due to increased anthropogenic emissions, these processes alone can no...
Resource Type:: Masters Thesis
Full Text:: would also like to extend my gratitude to the members of my committee, Dr. Burke Hales, Dr. Jennifer

New Insights on the Southern Ocean Carbon Cycle from Biogeochemical Argo Floats

Creator:: Williams, Nancy L.
Abstract:: The Southern Ocean plays an important role in the ocean’s uptake of heat and carbon yet the processes controlling this uptake are not well understood. To date, more than 100 biogeochemical profiling floats that measure water column pH, oxygen, nitrate, fluorescence, and backscattering at 10-day intervals have been deployed throughout...
Resource Type:: Dissertation
Full Text:: other members of my committee: Richard Feely, Burke Hales, and Ricardo Letelier. You have challenged

A study on the effects of enhanced pCO2 on open ocean diazotrophic assemblages

Creator:: Gradoville, Mary Rose
Abstract:: Biological di-nitrogen (N₂) fixation is a key process in open-ocean ecosystems, where the new nitrogen (N) provided by marine diazotrophs can support a large fraction of primary productivity and carbon (C) drawdown. Recent laboratory studies have shown that elevated pCO₂ enhances the rate of N₂ fixation by select laboratory isolates...
Resource Type:: Masters Thesis
Full Text:: lightheartedness has made my time here exciting and rewarding. My additional committee members, Burke Hales

Ocean Acidification Impacts on Bivalves at Multiple Organizational Levels: From Individual Larvae to Bivalve Aggregations Habitats

Creator:: Gimenez Calvo, Iria
Abstract:: Many marine bivalves are sensitive to ocean acidification (OA) stress and often show heightened sensitivity during brief early larval and post-larval life stages, potentially leading to population bottlenecks. Most of the evidence to date has been collected in laboratory experiments that focused on physiological responses at the organismal level under...
Resource Type:: Dissertation
Full Text:: like to thanks Dr. Burke Hales for encouraging me to be a rigorous, quantitative scientist, and for

The social construction of crisis: Deconstructing the complex pathways linking disaster, conflict, and peace

Creator:: Peters, Laura E. R.
Abstract:: We are witness to an ever tighter coupling between natural hazard-related disasters ("disasters") and violent social conflict ("conflict"). Previous research has established that disaster has the propensity to lead to conflict, and conflict, in turn, has been found to contribute to disaster vulnerabilities. The field of disaster diplomacy, by contrast,...
Resource Type:: Dissertation
Full Text:: T. Wolf We are witness to an ever tighter coupling between natural hazard-related disasters

Is dam development a mechanism for human security? Scale and perception of the Grand Ethiopian Renaissance Dam on the Blue Nile River in Ethiopia and the Xayaburi Dam on the Mekong River in Laos

Creator:: Veilleux, Jennifer Corinne
Abstract:: Human security is a framework related to the stability and sustainability of political, environmental, economical, and socio-cultural areas of concern. Water resources around the world are under increased pressure from increased development, growing populations, pollution, and global climate change. Large-scale dam development while still popular for political and economic development...
Resource Type:: Dissertation
Full Text:: Abstract approved: _____________________________________ Aaron T. Wolf Human security is a framework

Beyond Cooperation : Environmental Justice in Transboundary Water Management

Creator:: Watson, Julie Elkins
Abstract:: Since the Wolf, Yoffe, and Giordano 2003 Basins at Risk study, examining human interactions with transboundary water resources through a lens of conflict and cooperation has been a dominant paradigm. The Basins at Risk (BAR) method involves categorizing events on a scale from most conflictive (e.g. war or extensive casualties)...
Resource Type:: Dissertation
Full Text:: Cooperation: Environmental Justice in Transboundary Water Management Abstract approved: Aaron T. Wolf

Interactions amongst Local and Global Drivers of Coastal Acidification in Estuarine Habitats of the Northern California Current

Creator:: Pacella, Stephen R.
Abstract:: The variability of coastal carbonate chemistry continues to provide significant hurdles for understanding interactions between anthropogenic and natural CO2 cycling and resultant effects on coastal acidification dynamics. Attribution of the anthropogenic component is vital for identifying the impacts of increasing atmospheric carbon on coastal habitats such as coral reefs, upwelling...
Resource Type:: Dissertation
Full Text:: guidance in my development as a research scientist. My committee members, Burke Hales, Laurie Juranek

Oceanographic Drivers of Northern California Current Phytoplankton Communities and their Fatty Acid Composition: Implications for Northwest Fisheries

Creator:: Smoak, Rebecca T.
Abstract:: Micro-plankton are a crucial component of pelagic food webs, responding rapidly to environmental changes, and providing a first step in the acquisition and transfer of nutrients to life in the ocean. In addition to the uptake of carbon, phytoplankton provide essential fatty acids (FAs) that can limit the growth of...
Resource Type:: Masters Thesis

How Can Present and Future Satellite Missions Support Scientific Studies that Address Ocean Acidification?

Creator:: Salisbury, Joseph, Vandemark, Douglas, Jönsson, Bror, Balch, William, Chakraborty, Sumit, Lohrenz, Steven, Chapron, Bertrand, Hales, Burke, Mannino, Antonio, Mathis, Jeremy T., Reul, Nicolas, Signorini, Sergio R., Wanninkhof, Rik, and Yates, Kimberly K.
Abstract:: Space-based observations offer unique capabilities for studying spatial and temporal dynamics of the upper ocean inorganic carbon cycle and, in turn, supporting research tied to ocean acidification (OA). Satellite sensors measuring sea surface temperature, color, salinity, wind, waves, currents, and sea level enable a fuller understanding of a range of...
Resource Type:: Article
Full Text:: , William Balch, Sumit Chakraborty, Steven Lohrenz, Bertrand Chapron, Burke Hales, Antonio Mannino, Jeremy

Detection of Physical and Biological Fronts in the Northern California Current System and the Drivers Behind Their Seasonal to Interannual Variability

Creator:: Jamil, Aliya L.
Abstract:: Oceanic fronts mark the boundary between two water masses and are often sites of complex bio-physical processes and multi-trophic level interactions, making them particularly important features in marine ecosystems. As global climate change induces multi-scale shifts in the driving physical mechanisms of fronts, spatiotemporal tracking of frontal variability can aid...
Resource Type:: Masters Thesis
Full Text:: : _____________________________________________________________________ Maria T. Kavanaugh & Yvette H. Spitz Oceanic fronts mark the boundary between two

The Influence of Model Resolution on Dispersal and Retention in Oregon Coastal Waters

Creator:: Wong-Ala, Jennifer A. T. K.
Abstract:: Lagrangian particle tracking (LPT) models are used to explore how physical processes influence the transport of particles (e.g., eggs, larvae, or propagules) in the ocean. On the Oregon continental shelf and slope, the Northern California Current System (CCS) is influenced by spatially and temporally variable coastal currents driven by weather,...
Resource Type:: Masters Thesis

Distribution, Abundance, and Settlement of Slope-spawning Flatfish during Early Life Stages in the Eastern Bering Sea

Creator:: Sohn, Dongwha
Abstract:: Changes in environmental conditions in marine ecosystems could directly or indirectly influence distribution, abundance, settlement, and size at settlement of flatfish. Understanding species-specific and age-specific responses to environmental variability is important for managing commercially important flatfish stocks. Slope-spawning flatfish whose offspring rely on extensive drift from the slope (spawning) to...
Resource Type:: Dissertation
Full Text:: facilities. I also thank William T. Stockhausen for providing the particle-tracking model (DisMELS) used in

New Insights into Mantle Dynamics from Helium Isotopes and Argon Geochronology

Creator:: Konrad, Kevin
Abstract:: Earth’s mantle extends to nearly 3000 km depth, comprises >80 % of Earth’s total volume, and has the largest influence on the primordial and radiogenic heat budget. Despite its importance, the structure and composition of the mantle is still debated. There are three primary models for Earth’s mantle structure that...
Resource Type:: Dissertation
Full Text:: Earth’s mantle. Burke, K., Steinberger, B., Torsvik, T. H., and Smethurst, M. A., 2008, Plume gener

Connecting Tidal-fluvial Life Histories to Survival of McKenzie River Spring Chinook Salmon (Oncorhynchus tshawytscha)

Creator:: Rose, Gordon W.
Abstract:: Chinook salmon returns to the Columbia River basin have declined due to impacts of a growing human population, despite significant mitigation expenditures. Consequently, fisheries managers have become focused on recovery and long-term viability of at-risk populations. A viable population depends, in part, on the connectivity and quality of diverse habitat...
Resource Type:: Masters Thesis
Full Text:: -round (Healey 1991; Burke 2004; Schroeder and Kenaston 2004; Bottom et al. 2005; Schroeder et al. 2007

Climate change in the Northwest : implications for our landscapes, waters, and communities

Creator:: Dalton, Meghan M., Mote, Philip W., Snover, Amy K., and Oregon Climate Change Research Institute
Abstract:: Climate Change in the Northwest: Implications for Our Landscapes, Waters, and Communities is a report aimed at assessing the state of knowledge about key climate impacts and consequences to various sectors and communities in the Northwest United States. This report draws on two recent state climate assessments in Washington in...
Resource Type:: Technical Report
Full Text:: /NCAreports. Report Author Team John T. Abatzoglou Department of Geography, University of Idaho Jeffrey

Using the ⁸⁷Sr/⁸⁶Sr of modern and paleoseep carbonates from northern Cascadia to link modern fluid flow to the past

Creator:: Joseph, C., Torres, M. E., Martin, R. A., Haley, B. A., Pohlman, J. W., Riedel, M., and Rose, K.
Abstract:: Most authigenic carbonates previously recovered from the Cascadia slope have Sr-⁸⁷/Sr-⁸⁶ signatures that reflect shallow precipitation in equilibrium with coeval seawater. There is also evidence for carbonate formation supported by fluids that have been modified by reactions with the incoming Juan de Fuca plate (Sr-⁸⁷/⁸⁶(Sr) = 0.7071; Teichert et al.,...
Resource Type:: Article
Full Text:: , United States b Burke Museum, Seattle, WA, United States c United States Geologic Survey, United States d

Carbon cycle variability during the last millennium and last deglaciation

Creator:: Bauska, Thomas K.
Abstract:: The exchange of carbon on earth is one of the fundamental processes that sustains life and regulates climate. Since the onset of the Industrial Revolution, the burning of fossil fuels and anthropogenic land conversion have altered the carbon cycle, increasing carbon dioxide in the atmosphere to levels that are unprecedented...
Resource Type:: Dissertation
Full Text:: approximated by: ! 1 pCO2 "pCO2 "T # 0.0423T(°C)$1 (15) If seawater is saturated at 300 ppm, a 1

A Tale of Two Counties : Exploring Co-Produced Coastal Adaptation Strategies in Tillamook County, OR and Grays Harbor County, WA

Creator:: Evans-Wilent, Janan K.
Abstract:: Coastal communities throughout the US West Coast and elsewhere are facing the daunting task of preparing for climate change impacts, particularly the hazards from increased flooding and erosion. With sea-level rise, changing storminess patterns, and possible changes to the frequency and severity of major El Niño events, communities are already...
Resource Type:: Masters Thesis
Full Text:: struggle to implement relocation or resilient rebuilding practices (Binder and Greer, 2016; Costas et al

An Exploration of the Research Capacity Building Potential of Informal Higher Education Marine Science Programs in an International Context

Creator:: Moskel, Jennifer M.
Abstract:: Informal higher education science learning programs are increasingly being used as a tool to build scientific research capacity. However, there is low understanding of the impact that these programs on their target audiences, which is important to future capacity building efforts and program design. The purpose of this research project...
Resource Type:: Masters Thesis
Full Text:: evaluation literature (e.g., Francis & Greer, 1999; Kardash, 2000; Moore & Foy, 1997), 2017 observational

The Power of Three: Coral Reefs, Seagrasses and Mangroves Protect Coastal Regions and Increase Their Resilience

Creator:: Guannel, Greg, Arkema, Katie, Ruggiero, Peter, and Verutes, Gregory
Abstract:: Natural habitats have the ability to protect coastal communities against the impacts of waves and storms, yet it is unclear how different habitats complement each other to reduce those impacts. Here, we investigate the individual and combined coastal protection services supplied by live corals on reefs, seagrass meadows, and mangrove...
Resource Type:: Article
Full Text:: we use the “Colson” reef profile measured by Burke [26], where, during present day sea-level

Signatures in the Subsurface - Big & Small Data Approaches for the Spatio-Temporal Analysis of Geologic Properties & Uncertainty Reduction

Creator:: Rose, Kelly Kathleen
Abstract:: Despite more than two centuries of exploration, including more than six million deep wellbores with depths exceeding 40,000 feet in some parts of the world, our ability to constrain subsurface processes and properties remains limited. Characteristics of the subsurface vary and can be analyzed on a variety of spatial scales....
Resource Type:: Dissertation

Stable Isotope Constraints on Carbon Dioxide and Nitrous Oxide Variations at the Onset of the Last Glacial Period: New Ice Cores from Taylor Glacier, Antarctica

Creator:: Menking, James A.
Abstract:: New ice cores retrieved from the Taylor Glacier (Antarctica) blue ice area contain ice and air spanning the Marine Isotope Stage (MIS) 5/4 transition, a period of global cooling and ice sheet expansion. Chronologies were determined for the ice and air bubbles in the new ice cores by visually matching...
Resource Type:: Dissertation
Full Text:: conversations about the carbon cycle and for always being willing to help. I thank Burke Hales for teaching me

Future climate projections. Lincoln County : February 2020

Creator:: Dalton, Meghan
Abstract:: A report to the Oregon Department of Land Conservation and Development.
Resource Type:: Technical Report
Full Text:: - RCP45 0 0 Q) 800 - - RCP2.6 Q) 8 C Q. C 0) 0 Cf) 700 - Commitment Cll C -e t a> ro ro ro ~B 6

Restoring the Columbia River Estuary : Chinook Salmon Recovery and Invasive Species Management

Creator:: Klopfenstein, Rachael
Abstract:: As highlighted in this study, shallow-water habitats and the prey they provide are important for juvenile salmon in the Columbia River estuary, but the spread of invasive species and large-scale changes to the estuary influence how these habitats are utilized. Reed canarygrass (Phalaris arundinacea) (“PHAR” hereafter) is a highly invasive...
Resource Type:: Masters Thesis

Interactive visual analysis promotes exploration of long-term ecological data

Creator:: Pham, Tuan, Jones, Julia A., Metoyer, Ronald, Swanson, Frederick, and Pabst, Robert
Abstract:: Long-term ecological data are crucial in helping ecologists understand ecosystem function and environmental change. Nevertheless, these kinds of data sets are difficult to analyze because they are usually large, multivariate, and spatiotemporal. Although existing analysis tools such as statistical methods and spreadsheet software permit rigorous tests of pre-conceived hypotheses and...
Resource Type:: Article
Full Text:: Ecosystems and Society, Oregon State University, Corvallis, Oregon 97331 USA Citation: Pham, T., J. Jones, R

Modeled Larval Connectivity Patterns in two Coral Reef Regions : the Western Caribbean and the Kenyan-Tanzanian Shelf

Creator:: Mayorga Adame, Claudia Gabriela
Abstract:: Tropical coral reef ecosystems are very important from both the ecological and economical points of view. However, they are also particularly fragile, and have been declining in recent years in most regions of the world, since they are highly susceptible to anthropogenic stressors operating at global scales (e.g., global warming...
Resource Type:: Dissertation
Full Text:: approximately 27% of the total area of tropical coral reef ecosystems [Burke et al., 2011]. However, the

Characterizing the response of coralline algae to ocean acidification and nutrient changes in the California Current system

Creator:: Letzing, Sandy
Abstract:: Ocean acidification (OA) has emerged as an important focus of research and policy in this decade. Ocean acidification specifically refers to changes in the inorganic carbon system in the ocean resulting from its absorption of human-released CO₂ from the atmosphere. Anthropogenic atmospheric CO₂ levels are rapidly increasing; much of this...
Resource Type:: Masters Thesis

Influence of spatial and temporal factors on plants, pollinators and plant-pollinator interactions in montane meadows of the western Cascades Range

Creator:: Pfeiffer, Vera W.
Abstract:: Montane meadows comprise less than 5% of the landscape of the western Cascades of Oregon, but they provide habitat for diverse species of plants and pollinators. Little is known about plant-pollinator network structure at these sites. This study quantified plant-pollinator interactions over the summer of 2011, based on six observations...
Resource Type:: Masters Thesis

Sixth Oregon climate assessment

Creator:: Fleishman, Erica and Oregon Climate Change Research Institute
Abstract:: Consistent with its charge under Oregon House Bill 3543, the Oregon Climate Change Research Institute (OCCRI) conducts a biennial assessment of the state of climate change science, including biological, physical, and social science, as it relates to Oregon and the likely effects of climate change on Oregon. This sixth Oregon...
Resource Type:: Technical Report

A petrogenetic model for the Caribbean large igneous province

Creator:: Krawl, Kyle A.
Abstract:: The Caribbean Plateau is an oceanic large igneous province (CLIP). A widely accepted model for LIP petrogenesis proposes that these large bodies of igneous rock are formed by decompression melting associated with upwelling mantle plume heads during the initiation of hotspot activity. According to this classical model, petrogenesis occurs over...
Resource Type:: Masters Thesis
Full Text:: Cretaceous (Burke et al., 1984; Duncan and Hargraves, 1984; Pindell and Barrett, 1990; Kerr et al., 1999

On the Volcanic and Geodynamic Evolution of the Shatsky Rise and the Louisville Seamount

Creator:: Heaton, Daniel E.
Abstract:: Large igneous provinces (LIPs) and intraplate seamounts reflect of anomalous mantle melting and illuminate interior processes of the Earth. These features are in all ocean basins and show the mantle’s evolution over time, then can provide information on plate tectonic processes, such as plate motion over time, spreading ridge formation,...
Resource Type:: Dissertation
Full Text:: et al., 2014) and mantle plumes have been associated with the formation of triple junctions (Burke

Change in Oregon’s Nearshore Groundfish Trawl Fishery: Perspectives from Science and Industry Data

Creator:: Howard, Rebecca A.
Abstract:: The commercial groundfish fishing industry and groundfish research have a long concurrent history of activity on the Oregon continental margin. Within the non-whiting groundfish fishery, the target species are primarily flatfishes, sablefish, lingcod, and rockfishes, though landings of each have fluctuated over time. Recent work shows that over the past...
Resource Type:: Masters Thesis

A cooperative effort to track Humboldt squid invasions in Oregon

Creator:: Chesney, Tanya A.
Abstract:: Interannual variability of Humboldt squid (Dosidicus gigas) occurrence in the northern California Current System is largely unknown. In Oregon, the distribution of this versatile predator and what is influencing their range expansion from Mexico is poorly understood due to the recent nature of their "invasion" and a lack of monitoring....
Resource Type:: Masters Thesis
Full Text:: , Marlene Bellman, Patty Burke, Steve de Blois, Janell Majeweski, Rebecca Thomas, Vanessa Tuttle, Ric

Geochemical evidence in the northeast Lau Basin for subduction of the Cook-Austral volcanic chain in the Tonga Trench

Creator:: Price, Allison A., Jackson, Matthew G., Blichert-Toft, Janne, Blusztajn, Jerzy, Conatser, Christopher S., Konter, Jasper G., Koppers, Anthony A. P., and Kurz, Mark D.
Abstract:: Lau Basin basalts host an array of geochemical signatures that suggest incorporation of enriched mantle source material often associated with intraplate hotspots, but the origin of these signatures remain uncertain. Geochemical signatures associated with mantle material entrained from the nearby Samoan hotspot are present in northwest Lau Basin lavas, and...
Resource Type:: Article
Full Text:: SEAMOUNT SUBDUCTION 1696 Ta b le 1. M aj or an d Tr ac e El em en t A na ly se s of La va s Ex am

Structural Evolution, Vein Orientation, and Paragenesis of the Botija Porphyry Cu-Mo-(Au) Deposit, Colón, Panamá

Creator:: Sepp, Michael D.
Abstract:: The Botija Cu-Mo-Au porphyry deposit is located in the Cobre Panamá mining district, which contains several deposits with a global measure and indicated and inferred resource of 14.8 MT of Cu. These deposits are associated with the Cerro Petaquilla batholith, which has U/Pb zircon ages of 26-33 Ma (Whattam et...
Resource Type:: Masters Thesis
Full Text:: copper deposits with a global measured + indicated resource of 4.2 Gt at a grade of 0.35 wt.% Cu, 6 g/t

Ecological Consequences of Marine Debris: Understanding Large-Scale Species Transport on Tsunami Debris and Research Priorities in Oregon

Creator:: Gillman, Reva A.
Abstract:: The release of marine debris into the oceans and seas is a global issue of growing concern. These materials are harmful to marine environments and can also transport non-native species to novel habitats. Non-native species floating on marine litter is one of the lesser known impacts associated with marine debris....
Resource Type:: Masters Thesis
Full Text:: 250,000 tons afloat at sea. PloS One. 2014. 9(12):e111913. Galgani F, Hanke G, Maes T. Global

The Global Overturning Circulation Since the Last Glacial Maximum Based on Marine Authigenic Neodymium Isotopes

Creator:: Du, Jianghui
Abstract:: The Global Overturning Circulation (GOC) is a major component of the global climate system. Understanding its behavior is pertinent to our prediction of climate change in the future. The lack of long-term observations of GOC in the modern instrumental era necessitates studies of GOC using paleoceanographic records. Of great interest...
Resource Type:: Dissertation

Marine Neritic and Epipelagic Community Dynamics: An Investigation of the 'Yin' and 'Yang', No-Analog, and Refugia from a Multi-species Perspective

Creator:: Barceló, Caren
Abstract:: Changes in ocean conditions influenced by climatic fluctuations have lead to changes in individual species distributions, which alter the diversity, communities and species interactions across marine ecosystems worldwide. Assessing the species composition and identifying regions and habitats that can safeguard the persistence of biota are critically important. In this dissertation,...
Resource Type:: Dissertation
Full Text:: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113 4.9 Temporal beta diversity across different lags. (a) t+1 year, (b) t+2 years, (c) t+3 years, (d

A New Record of Planktic Foraminifera Community Response to Marine Heatwaves in the Northeast Pacific

Creator:: M. Kelsey Lane
Abstract:: Marine heat waves are forecasted to increase in frequency and intensity under future climate scenarios, but little is known about the impact of these events on the one of the most commonly used proxies of ocean temperature - foraminiferal assemblages. This research explores the planktic foraminifera community along the Newport...
Resource Type:: Masters Thesis
Full Text:: asymbiotic foraminifera (N. pachyderma, G. bulloides and T. quinqueloba). Symbiotic foraminifera (O

Applying a Dynamic Time Warping Approach to Stratigraphic Correlation: Quaternary Magnetostratigraphy and Ediacaran–Cambrian Chemostratigraphy

Creator:: Hagen, Cedric J.
Abstract:: Magneto- and chemostratigraphic correlation underpins much of our understanding of Earth history, yet typical correlation techniques are neither quantitative nor objective. Within this dissertation, I detail my efforts to develop and apply dynamic programming-based algorithms that accomplish optimal and reproducible stratigraphic alignment. I apply these algorithms to three geologic intervals:...
Resource Type:: Dissertation
Full Text:: , Joe S. Stoner, and Brendan T. Reilly contributed to the conception of the study, as well as writing

The effects of clouds on transient baroclinic eddies in a Mars General Circulation Model

Creator:: Rucker, Michael S.
Abstract:: The low-level baroclinic eddy activity seen in the NASA Ames Mars General Circulation Model (MGCM) for simulations under three annual dust cycles are characterized. Simulations were conducted with both radiatively active and radiatively inert clouds (RAC and non-RAC, respectively) for 11 continuous annual cycles for each dust case. Model results...
Resource Type:: Masters Thesis
Full Text:: tendencies for the prognostic variables (temperature, T ; horizontal wind components, u, v; the vertical

Comparison of larval development in domesticated and naturalized stocks of the Pacific oyster Crassostrea gigas exposed to high pCO₂ conditions

Creator:: Durland, Evan, Waldbusser, George, and Langdon, Chris
Abstract:: Ocean acidification (OA) has had significant negative effects on oyster populations on the west coast of North America over the past decade. Many studies have focused on the physiological challenges experienced by young oyster larvae in high pCO₂/low pH seawater with reduced aragonite saturation state (Ωarag), which is characteristic of...
Resource Type:: Article
Full Text:: analysis. These water samples were analyzed at the lab of Dr. Burke Hales at Oregon State University

Developing a Strategic Conservation Project for the Oregon Coast Aquarium

Creator:: Prendergast, Lisa D.
Abstract:: This study developed a strategic conservation project for the Oregon Coast Aquarium in Newport, Oregon focusing on a signature species and this aquarium’s conservation focus areas (i.e., marine debris, sustainable fisheries, water quality, climate change). This study also examined the potential for incorporating an ecotourism or wildlife tourism component to...
Resource Type:: Capstone Project
Full Text:: their willingness to offer their expertise and opinions. I would also like to thank Jim Burke and

Spatial relationships for vegetation in restored and reference salt marshes in the Salmon River Estuary, Oregon

Creator:: Chellew, Megan
Abstract:: In this thesis, the spatial patterns of vegetation and soils of reference and restored tidal marshes were compared to determine the extent to which restored sites differ from the reference site after 40 years of restoration. Vegetation surveys of 1m x 1m plots were conducted along previously-established transects of salt...
Resource Type:: Masters Thesis
Full Text:: . ‘Salt’ plots have a majority of D. spicata, S. perennis, and or T. maritima. ‘High marsh’ plots are

Geochemical and Geostatisical Analyses of Quaternary Climate Variability over Millennial-to-Orbital Timescales

Creator:: Barth, Aaron M.
Abstract:: The goal of dissertation research was to use geochemical, statistical and geological methods to constrain and understand climate variability over several different time scales. Specifically, I have addressed three questions regarding past climate change: (1) how does the record of Irish cirque glaciers constrain the dimensions of the Irish Ice...
Resource Type:: Dissertation

Effects of Stage 0 treatment on spring Chinook juveniles within South Fork McKenzie River in Oregon

Creator:: Hahn, Aleah
Abstract:: Low-tech habitat restoration techniques, including Stage 0 treatments, are increasingly applied but often lack robust evaluation of their effects. In 2018, one kilometer of the South Fork McKenzie (SFMK) River, OR was modified to the Stage 0 condition for the benefit of ESA-listed Chinook by raising the incised channel to...
Resource Type:: Masters Thesis

Effects of forest roads and tree removal in or near wetlands of the Pacific Northwest : a literature synthesis

Creator:: Adamus, Paul R.
Abstract:: Because studies of forestry effects on wetlands have been so infrequent in the Pacific Northwest, each section in this report drew heavily from studies of forestry impacts to streams and riparian zones. After assembly and synthesis, that information was extrapolated, mostly in the form of hypotheses, to the very different...
Resource Type:: Technical Report
Full Text:: potential of wetlands to 2 Hruby, T. 2004. Washington

Fourth Oregon climate assessment report. State of climate science : 2019

Creator:: Mote, Philip W., Abatzoglou, John, Dello, Kathie D., Hegewisch, Katherine, Rupp, David E., and Oregon Climate Change Research Institute
Abstract:: This report, required by state law under HB3543, provides a comprehensive assessment of the state of science of climate change as it pertains to Oregon, covering the physical, biological, and social dimensions. The first chapter summarizes the current state of knowledge of physical changes in climate and hydrology, focusing on...
Resource Type:: Technical Report
Full Text:: 2016 2010 2006 2015 2007 2011 Ju ly - S ep te m be r t em pe ra tu re a no m al y

Exploring perceptions and experiences of the U.S. West Coast shellfish industry dealing with ocean acidification

Creator:: Mabardy, Rebecca Anne
Abstract:: Nearshore and estuarine environments along the U.S West Coast are ocean acidification (OA) "hotspots". Carbon dioxide-enriched water has been correlated with production losses of Pacific oyster (Crassostrea gigas) larvae at hatcheries in the Pacific Northwest. Limited and unreliable supply of larval seed has implications for the economic well-being of commercial...
Resource Type:: Masters Thesis
Full Text:: Burke Hales, Rob Wheatcroft, Fred Prahl, and Chris Langdon for sharing their passion for science

The third Oregon climate assessment report : January 2017

Creator:: Dalton, Meghan M., Dello, Kathie D., Hawkins, Linnia, Mote, Philip W., Rupp, David E., and Oregon Climate Change Research Institute
Abstract:: As per Oregon State Legislature House Bill 3543.
Resource Type:: Technical Report
Full Text:: . Ch. 28: Adaptation. In: Melillo JM, Richmond T (T. C. and Yohe GW (eds) Climate Change Impacts in

Vulnerability and adaptation of Pacific Northwest shellfisheries to ocean acidification

Creator:: Katz, Brian G.
Abstract:: The purpose of this study was to understand the vulnerability and adaptive capacity of shellfish stakeholders in the Pacific Northwest who are adapting to ocean acidification (OA). This study developed a geovisualization tool of existing environmental data for assessing species-specific risk profiles to OA (based on their exposure and sensitivity),...
Resource Type:: Masters Thesis
Full Text:: water, also known as the Burke-O-Lator (b), bags of dense soda ash used for buffering hatchery water (c

Investigation of Slip and Tectonics of the Blanco Transform Fault using High-resolution Ocean Bottom Seismic Data

Creator:: Kuna, Václav M.
Abstract:: The dissertation concentrates on seismicity of the Blanco Transform Fault (BTF), a 350-km-long oceanic transform fault (OTF) in the northeast Pacific Ocean. I analyze data collected during the Blanco Transform Fault OBS experiment, which comprised of a 1-year deployment of 55 three-component seismometers co-located with differential pressure gauges on and...
Resource Type:: Dissertation
Full Text:: ., & Jordan, T. H. (2004). Earthquake scaling relations for mid-ocean ridge transform faults. Journal of

Fifth Oregon climate assessment

Creator:: Dalton, Meghan M., Fleishman, Erica, and Oregon Climate Change Research Institute
Abstract:: Consistent with its charge under Oregon House Bill 3543, the Oregon Climate Change Research Institute (OCCRI) conducts a biennial assessment of the state of climate change science, including biological, physical, and social science, as it relates to Oregon and the likely effects of climate change on Oregon. This fifth Oregon...
Resource Type:: Technical Report
Full Text:: York. Guidotti, R., H. Chmielewski, V.U. Unnikrishnan, P. Gardoni, T. McAllister, and J.W. van de

The Ocean Circulation and Carbon Cycle during the Last Glacial Maximum

Creator:: Muglia, Juan
Abstract:: During the Last Glacial Maximum (LGM, ∼ 21 ky before present) the atmospheric CO2 concentration was about 100 ppm lower than its pre-industrial (PI)value. The missing carbon from the atmosphere must have been stored in thedeep ocean during this period, but the mechanisms driving such re-distribution ofthe carbon cycle are...
Resource Type:: Dissertation

Volatile mobility of trace metals in volcanic systems

Creator:: Loewen, Matthew W.
Abstract:: Semi-volatile trace metals like Li, Cu, Mo, Sn, In, and Pb have the potential to track mobility of a volatile phase in volcanic systems. In this dissertation four studies are presented that either directly investigate or are motivated by observations of trace metal behavior in volcanic systems. A common tool...
Resource Type:: Dissertation
Full Text:: ..............................88 4.2. Calculated amphibole pressure (P) compared to calculated temperature (T) and molar Al/Si

Late Cenozoic Climate, Ice-sheet and Earth-surface Evolution Derived from Terrestrial and Marine Sedimentary Archives

Creator:: Bill, Nicholas S.
Abstract:: The goals of this dissertation are centered on understanding changes in Earth surface and climate systems through the use of geologic proxies as records of past changes in these systems. Specifically, this dissertation (1) establishes a new chronology for retreat of the Ross Sea sector of the West Antarctic Ice...
Resource Type:: Dissertation
Full Text:: America, p. 507–547. White, J.M., Ager, T. a., Adam, D.P., Leopold, E.B., Liu, G., Jetté, H., and

An Evaluation of the Complex Age Progression along the Cook-Austral Islands Using High-resolution ⁴⁰Ar/³⁹Ar Incremental Heating Ages

Creator:: Rose, Joanna
Abstract:: The Cook-Austral island chain has been the center of debate for many years. Contrary to the classical hotspot hypothesis, this volcanic island chain does not exhibit a linear age progression with a single node of active volcanism, but instead shows evidence of young volcanism at several points along the chain....
Resource Type:: Masters Thesis

Indicators for Monitoring Biological Integrity of Inland, Freshwater Wetlands : A Survey of North American Technical Literature (1990-2000)

Creator:: Adamus, Paul R.
Abstract:: Potentially relevant literature for the years 1990-1999 was identified by (a) conducting keyword searches of computerized bibliographic databases, especially CAB Abstracts and Aquatic Sciences and Fisheries Abstracts, (b) reading through the tables of contents of a few especially relevant journals, (c) searching the internet for pertinent bibliographies, and (d) to...
Resource Type:: Technical Report
Full Text:: of the information in this report was compiled while one of the authors (T. Danielson) was at Duke

Wetlands of Island County, Washington : Profile of Characteristics, Functions, and Health

Creator:: Adamus, Paul R.
Abstract:: This document partially addresses the Wetlands component of Island County’s Critical Areas Ordinance (CAO). It presents the results of a year-long collaborative project to compile, analyze, and summarize existing data pertinent to Island County wetlands. Similar in concept to the “report card” issued periodically for Puget Sound, this compilation attempts...
Resource Type:: Technical Report

Oregon climate assessment report : December 2010

Creator:: Dello, Kathie D., Mote, Philip W., and Oregon Climate Change Research Institute
Abstract:: The group of scientists that make up the Intergovernmental Panel on Climate Change found in 2007 that the warming of Earth’s climate is unequivocal and largely due to human activity. Earth’s climate has changed in the past, though the recent magnitude and pace of changes are unprecedented in human existence....
Resource Type:: Technical Report
Full Text:: , Burke Hales3, P. Michael Kosro3, Stephen D. Pierce3, Roger Samelson3, Kipp Shearman3, Robert L. Smith3

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