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A novel method for determination of aragonite saturation state on the continental shelf of central Oregon using multi-parameter relationships with hydrographic data

Creator:: Juranek, L. W., Freely, R. A., Peterson, W. T., Alin, S. R., Hales, Burke, Lee, K., Sabine, C. L., and Peterson, J.
Abstract:: We developed a multiple linear regression model to robustly determine aragonite saturation state (Ωarag) from observations of temperature and oxygen (R² = 0.987, RMS error 0.053), using data collected in the Pacific Northwest region in late May 2007. The seasonal evolution of Ωarag near central Oregon was evaluated by applying...
Resource Type:: Article
Full Text:: hydrographic data L. W. Juranek,1 R. A. Feely,1 W. T. Peterson,2 S. R. Alin,1 B. Hales,3 K. Lee,4 C. L

Ocean Acidification Has Multiple Modes of Action on Bivalve Larvae

Creator:: Waldbusser, George G., Hales, Burke, Langdon, Chris J., Haley, Brian A., Schrader, Paul, Brunner, Elizabeth L., Gray, Matthew W., Miller, Cale A., Gimenez, Iria, and Hutchinson, Greg
Abstract:: Ocean acidification (OA) is altering the chemistry of the world’s oceans at rates unparalleled in the past roughly 1 million years. Understanding the impacts of this rapid change in baseline carbonate chemistry on marine organisms needs a precise, mechanistic understanding of physiological responses to carbonate chemistry. Recent experimental work has...
Resource Type:: Article

Mesoscale biogeochemical responses to iron fertilization in the upper layers of the Southern Ocean Iron Experiment areas

Creator:: Hales, Burke and Takahashi, Taro
Abstract:: During the Southern Ocean Iron Experiment (SOFeX), January-February 2002, two iron fertilization experiments were conducted at the south (66.45°S, 171.8°W) and north (56.23°S, 172°W) patches. The south patch was replete with all macronutrients, whereas the north patch was nearly depleted of silicate. Using a towed water sampling/measurement system, high resolution...
Resource Type:: Article
Full Text:: , two iron fertilization experiments were conducted at the south (66.45°S, 171.8°W) and north (56.23°S

Aragonite saturation state dynamics in a coastal upwelling zone

Creator:: Harris, Katherine E., DeGrandpre, Michael D., and Hales, Burke
Abstract:: Abstract: Coastal upwelling zones may be at enhanced risk from ocean acidification as upwelling brings low aragonite saturation state (Ω[subscript Ar]) waters to the surface that are further suppressed by anthropogenic CO₂. Ω[subscript Ar] was calculated with pH, pCO₂, and salinity-derived alkalinity time series data from autonomous pH and pCO₂...
Resource Type:: Article
Full Text:: .2010.55.6.2424. Juranek, L.W., R. A. Feely, W. T. Peterson, S. R. Alin, B. Hales, C. L. Sabine, and J. Peterson

Physicochemical and biological controls on primary and net community production across northeast Pacific seascapes

Creator:: Kavanaugh, Maria T., Emerson, Steven R., Hales, Burke, Lockwood, Deirdre M., Quay, Paul D., and Letelier, Ricardo M.
Abstract:: The subarctic-subtropical transition zone in the North Pacific represents the second largest sink of atmospheric carbon dioxide in the world ocean, yet the relative importance of physical and biological processes in this uptake is debated. In a step toward understanding the spatiotemporal variability of environmental, physiological, and ecological factors that...
Resource Type:: Article
Full Text:: biological drawdown is as, or more, important than the effect of solubility (Howard et al. 2010; Juranek et

The Pacific oyster, Crassostrea gigas, shows negative correlation to naturally elevated carbon dioxide levels: Implications for near-term ocean acidification effects

Creator:: Barton, Alan, Hales, Burke, Waldbusser, George G., Langdon, Chris, and Feely, Richard A.
Abstract:: We report results from an oyster hatchery on the Oregon coast, where intake waters experienced variable carbonate chemistry (aragonite saturation state < 0.8 to > 3.2; pH < 7.6 to > 8.2) in the early summer of 2009. Both larval production and midstage growth (∼ 120 to ∼ 150 µm)...
Resource Type:: Article
Full Text:: predictive capability (Juranek et al. 2009) such that stake- holders may be able to plan production

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:: Scientific Studies that Address Ocean Acidification? Salisbury, J., Vandemark, D., Jönsson, B., Balch, W

Impacts of Coastal Acidification on the Pacific Northwest Shellfish Industry and Adaptation Strategies Implemented in Response

Creator:: Barton, Alan, Waldbusser, George G., Feely, Richard A., Weisberg, Stephen B., Newton, Jan A., Hales, Burke, Cudd, Sue, Eudeline, Benoit, Langdon, Chris J., Jefferds, Ian, King, Teri, Suhrbier, Andy, and McLaughlin, Karen
Abstract:: In 2007, the US west coast shellfish industry began to feel the effects of unprecedented levels of larval mortality in commercial hatcheries producing the Pacific oyster Crassostrea gigas. Subsequently, researchers at Whiskey Creek Shellfish Hatchery, working with academic and government scientists, showed a high correlation between aragonite saturation state (Ω[subscript]arag)...
Resource Type:: Article
Full Text:: (Hinga, 1992; Frankignoulle et al., 1998; Ringwood and Keppler, 2002; Wootton et al., 2008; Juranek et

Satellite-based prediction of pCO₂ in coastal waters of the eastern North Pacific

Creator:: Hales, Burke, Strutton, Peter G., Saraceno, Martin, Letelier, Ricardo, Takahashi, Taro, Feely, Richard, Sabine, Christopher, and Chavez, Francisco
Abstract:: Continental margin carbon cycling is complex, highly variable over a range of space and time scales, and forced by multiple physical and biogeochemical drivers. Predictions of globally significant air–sea CO₂ fluxes in these regions have been extrapolated based on very sparse data sets. We present here a method for predicting...
Resource Type:: Article
Full Text:: , and the E–W banding across Regions 8, 4, 2, and 1 in July–September are probably not accurate

ScholarsArchive@OSU

A novel method for determination of aragonite saturation state on the continental shelf of central Oregon using multi-parameter relationships with hydrographic data

Ocean Acidification Has Multiple Modes of Action on Bivalve Larvae

Mesoscale biogeochemical responses to iron fertilization in the upper layers of the Southern Ocean Iron Experiment areas

Aragonite saturation state dynamics in a coastal upwelling zone

Physicochemical and biological controls on primary and net community production across northeast Pacific seascapes

The Pacific oyster, Crassostrea gigas, shows negative correlation to naturally elevated carbon dioxide levels: Implications for near-term ocean acidification effects

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

Impacts of Coastal Acidification on the Pacific Northwest Shellfish Industry and Adaptation Strategies Implemented in Response

Satellite-based prediction of pCO₂ in coastal waters of the eastern North Pacific

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