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Full-Text Articles in Life Sciences
Riverine Calcium End-Members Improve Coastal Saturation State Calculations And Reveal Regionally Variable Calcification Potential, Sean Thomas Beckwith, Robert H. Byrne, Pamela Hallock
Riverine Calcium End-Members Improve Coastal Saturation State Calculations And Reveal Regionally Variable Calcification Potential, Sean Thomas Beckwith, Robert H. Byrne, Pamela Hallock
Marine Science Faculty Publications
Carbonate-rich groundwater discharged from springs, seeps, and spring-fed rivers on carbonate platforms creates environments of potential refuge for calcifying organisms in coastal waters by supplying higher [Ca2+] and [CO32-] along with typically lower nutrient concentrations. The benefits associated with carbonate terrains are maximized in the presence of submerged aquatic vegetation (SAV), especially seagrasses. To improve the accuracy of carbonate saturation state (Ω) determinations, calculated values of [CO32-] and Ksp∗ were paired with [Ca2+] values determined using a model that incorporates directly measured riverine calcium end-members (model A). This model …
Ocean Futures Under Ocean Acidification, Marine Protection, And Changing Fishing Pressures Explored Using A Worldwide Suite Of Ecosystem Models, Erik Olsen, Isaac C. Kaplan, Cameron Ainsworth, Gavin Fay, Sarah Gaichas, Robert Gamble, Raphael Girardin, Cecilie H. Eide, Thomas F. Ihde
Ocean Futures Under Ocean Acidification, Marine Protection, And Changing Fishing Pressures Explored Using A Worldwide Suite Of Ecosystem Models, Erik Olsen, Isaac C. Kaplan, Cameron Ainsworth, Gavin Fay, Sarah Gaichas, Robert Gamble, Raphael Girardin, Cecilie H. Eide, Thomas F. Ihde
Marine Science Faculty Publications
Ecosystem-based management (EBM) of the ocean considers all impacts on and uses of marine and coastal systems. In recent years, there has been a heightened interest in EBM tools that allow testing of alternative management options and help identify tradeoffs among human uses. End-to-end ecosystem modeling frameworks that consider a wide range of management options are a means to provide integrated solutions to the complex ocean management problems encountered in EBM. Here, we leverage the global advances in ecosystem modeling to explore common opportunities and challenges for ecosystem-based management, including changes in ocean acidification, spatial management, and fishing pressure across …
Regional Acidification Trends In Florida Shellfish Estuaries: A 20+ Year Look At Ph, Oxygen, Temperature, And Salinity, Lisa L. Robbins, John T. Lisle
Regional Acidification Trends In Florida Shellfish Estuaries: A 20+ Year Look At Ph, Oxygen, Temperature, And Salinity, Lisa L. Robbins, John T. Lisle
Marine Science Faculty Publications
Increasing global CO2 and local land use changes coupled with increased nutrient pollution are threatening estuaries worldwide. Local changes of estuarine chemistry have been documented, but regional associations and trends comparing multiple estuaries latitudinally have not been evaluated. Rapid climate change has impacted the annual and decadal chemical trends in estuaries, with local ecosystem processes enhancing or mitigating the responses. Here, we compare pH, dissolved oxygen, temperature, and salinity data from 10 Florida shellfish estuaries and hundreds of shellfish bed stations. Over 80,000 measurements, spanning from 1980 to 2008, taken on Atlantic Ocean and West Florida coast showed significant …
Ocean Futures Under Ocean Acidification, Marine Protection, And Changing Fishing Pressures Explored Using A Worldwide Suite Of Ecosystem Models, Erik Olsen, Isaac C. Kaplan, Cameron Ainsworth, Gavin Fay, Sarah Gaichas, Robert Gamble, Raphael Girardin, Cecilie H. Eide, Thomas F. Ihde, Hem Nalini Morzaria-Luna, Kelli F. Johnson, Marie Savina-Rolland, Howard Townsend, Mariska Weijerman, Elizabeth A. Fulton, Jason S. Link
Ocean Futures Under Ocean Acidification, Marine Protection, And Changing Fishing Pressures Explored Using A Worldwide Suite Of Ecosystem Models, Erik Olsen, Isaac C. Kaplan, Cameron Ainsworth, Gavin Fay, Sarah Gaichas, Robert Gamble, Raphael Girardin, Cecilie H. Eide, Thomas F. Ihde, Hem Nalini Morzaria-Luna, Kelli F. Johnson, Marie Savina-Rolland, Howard Townsend, Mariska Weijerman, Elizabeth A. Fulton, Jason S. Link
Marine Science Faculty Publications
Ecosystem-based management (EBM) of the ocean considers all impacts on and uses of marine and coastal systems. In recent years, there has been a heightened interest in EBM tools that allow testing of alternative management options and help identify tradeoffs among human uses. End-to-end ecosystem modeling frameworks that consider a wide range of management options are a means to provide integrated solutions to the complex ocean management problems encountered in EBM. Here, we leverage the global advances in ecosystem modeling to explore common opportunities and challenges for ecosystem-based management, including changes in ocean acidification, spatial management, and fishing pressure across …
Interpreting The Role Of Ph On Stable Isotopes In Large Benthic Foraminifera, L. L. Robbins, P. O. Knorr, J. G. Wynn, Pamela Hallock, P. J. Harries
Interpreting The Role Of Ph On Stable Isotopes In Large Benthic Foraminifera, L. L. Robbins, P. O. Knorr, J. G. Wynn, Pamela Hallock, P. J. Harries
Marine Science Faculty Publications
Large benthic foraminifera (LBF) are prolific producers of calcium carbonate sediments in shallow, tropical environments that are being influenced by ocean acidification (OA). Two LBF species, Amphistegina gibbosa (Order Rotaliida) with low-Mg calcite tests and Archaias angulatus (Order Miliolida) with high-Mg calcite tests, were studied to assess the effects of pH 7.6 on oxygen and carbon isotopic fractionation between test calcite and ambient seawater. The δ 18O and δ 13C values of terminal chambers and of whole adult tests of both species after 6 weeks were not significantly different between pH treatments of 8.0 and 7.6. However, tests of juveniles …
Empirical Algorithms To Estimate Water Column Ph In The Southern Ocean, N. L. Williams, L. W. Juranek, K. S. Johnson, R. A. Feely, S. C. Riser, L. D. Talley, J. L. Russell, J. L. Sarmiento, R. Wanninkhof
Empirical Algorithms To Estimate Water Column Ph In The Southern Ocean, N. L. Williams, L. W. Juranek, K. S. Johnson, R. A. Feely, S. C. Riser, L. D. Talley, J. L. Russell, J. L. Sarmiento, R. Wanninkhof
Marine Science Faculty Publications
No abstract provided.
Physical–Chemical Characterization Of Purified Cresol Red For Spectrophotometric Ph Measurements In Seawater, Mark C. Patsavas, Robert H. Byrne, Xuewu Liu
Physical–Chemical Characterization Of Purified Cresol Red For Spectrophotometric Ph Measurements In Seawater, Mark C. Patsavas, Robert H. Byrne, Xuewu Liu
Marine Science Faculty Publications
The use of impure cresol red in spectrophotometric seawater pH measurements can introduce systematic inaccuracies greater than 0.1. Cresol red has been purified on a bulk scale to address this problem, but a characterization of the dye's physical–chemical properties has not been provided to date. This work reports the physical–chemical characteristics of purified cresol red for use in spectrophotometric seawater pH measurements over a range of temperatures and salinities. Seawater pH is expressed on the total hydrogen ion concentration scale (pHT) in terms of the ratio (R) of cresol red absorbances (A) at 433 and 573 nm (RCR = 573A/433A): …
Storm-Induced Upwelling Of High PCo2 Waters Onto The Continental Shelf Of The Western Arctic Ocean And Implications For Carbonate Mineral Saturation States, Jeremy T. Mathis, Robert S. Pickart, Robert H. Byrne, Craig L. Mcneil, G. W. Moore, Laurie W. Juranek, Xuewu Liu, Jian Ma, Regina A. Easley, Matthew M. Elliot, Jessica N. Cross, Stacey C. Reisdorph, Frank Bahr, Jamie Morison, Trina Lichendorf, Richard A. Feely
Storm-Induced Upwelling Of High PCo2 Waters Onto The Continental Shelf Of The Western Arctic Ocean And Implications For Carbonate Mineral Saturation States, Jeremy T. Mathis, Robert S. Pickart, Robert H. Byrne, Craig L. Mcneil, G. W. Moore, Laurie W. Juranek, Xuewu Liu, Jian Ma, Regina A. Easley, Matthew M. Elliot, Jessica N. Cross, Stacey C. Reisdorph, Frank Bahr, Jamie Morison, Trina Lichendorf, Richard A. Feely
Marine Science Faculty Publications
The carbon system of the western Arctic Ocean is undergoing a rapid transition as sea ice extent and thickness decline. These processes are dynamically forcing the region, with unknown consequences for CO2 fluxes and carbonate mineral saturation states, particularly in the coastal regions where sensitive ecosystems are already under threat from multiple stressors. In October 2011, persistent wind-driven upwelling occurred in open water along the continental shelf of the Beaufort Sea in the western Arctic Ocean. During this time, cold (<−1.2°C), salty (>32.4) halocline water—supersaturated with respect to atmospheric CO2 (pCO2 > 550 μatm) and undersaturated …