CP52B:
The Transformation and Fate of Carbon at the Land-Ocean Interface and Beyond I

Session ID#: 92867

Session Description:
Coastal oceans are important hot spots for the turnover and storage of organic matter at the land-ocean interface. Rapidly evolving analytical capabilities have allowed us to understand that organic matter likely exists along a reactivity continuum that is based on not only its source, but also the ecosystem properties where it currently resides. Yet, carbon cycling in coastal regions as well as transformations of terrestrial organic matter in the ocean and its linkage to marine microbes are still not well understood. In this session, we seek to bring together research that improves our understanding of biogeochemical carbon processing and/or storage in coastal oceans under past, present, and future climate scenarios. We invite contributions from all areas of carbon biogeochemistry that cut across ecosystem boundaries, covering studies from a wide range of spatiotemporal scales and settings. Studies assessing biotic and abiotic drivers changing organic matter composition at the molecular level are welcome. Presentations that examine the mechanisms underlying observed patterns in distribution or rates of particulate and dissolved organic matter transformation, their linkage to nutrient cycling and microbial remineralization processes across aquatic gradients are particularly encouraged.
Co-Sponsor(s):
  • CT - Chemical Tracers, Organic Matter and Trace Elements
  • OB - Ocean Biology and Biogeochemistry
Index Terms:

4805 Biogeochemical cycles, processes, and modeling [OCEANOGRAPHY: CHEMICAL]
4806 Carbon cycling [OCEANOGRAPHY: BIOLOGICAL]
4808 Chemical tracers [OCEANOGRAPHY: CHEMICAL]
4825 Geochemistry [OCEANOGRAPHY: CHEMICAL]
Primary Chair:  Michael Seidel, University of Oldenburg, Oldenburg, Germany
Co-chairs:  Nicholas D Ward, Pacific Northwest National Laboratory, Marine and Coastal Research Laboratory, Richland, WA, United States, Sairah Malkin, University of Maryland Center for Environmental Science, Horn Point Laboratory, Cambridge, MD, United States and Patricia M Medeiros, University of Georgia, Department of Marine Sciences, Athens, GA, United States
Primary Liaison:  Michael Seidel, University of Oldenburg, Oldenburg, Germany
Moderators:  Michael Seidel, University of Oldenburg, Oldenburg, Germany and Nicholas D Ward, Pacific Northwest National Laboratory, Marine and Coastal Research Laboratory, Richland, WA, United States
Student Paper Review Liaisons:  Sairah Malkin, University of Maryland Center for Environmental Science, Horn Point Laboratory, Cambridge, MD, United States and Patricia M Medeiros, University of Georgia, Department of Marine Sciences, Athens, GA, United States

Abstracts Submitted to this Session:

Organic Matter Transformations During Transit Through the San Francisco Bay Estuary (Invited) (654312)
Peter J Hernes1, Chia-ying Chuang2, Jennifer Harfmann1, Francois Guillemette3, Robert G Spencer4, Brian A Bergamaschi5 and Karl Kaiser6, (1)University of California Davis, Davis, CA, United States, (2)Academia Sinica, Research Center for Environmental Changes, Nangang, Taipei, Taiwan, (3)University of Quebec-Trois Rivieres, Trois Rivieres, QC, Canada, (4)Florida State University, Tallahassee, United States, (5)USGS California Water Science Center Sacramento, Sacramento, United States, (6)Texas A&M University at Galveston, Galveston, United States
Nitrogen controls on carbon accumulation in coastal system: Not all nitrogen is created equal (656535)
Jen Bowen, Northeastern University, Nahant, MA, United States, Ashley N Bulseco, The Ecosystems Center, Marine Biological Laboratory, Woods Hole, MA, United States, Anna Elizabeth Murphy, Northeastern University, Boston, MA, United States and Joseph H Vineis, Northeastern University, Marine Science Center, Nahant, MA, United States
Variation in the Flocculation of Dissolved Organic Matter in Two Contrasting Boreal River-Estuarine Gradients (652549)
Celyn Khoo, Memorial University of Newfoundland, Earth Sciences, Ocean Sciences, St John's, NF, Canada, Rachel E Sipler, Virginia Institute of Marine Science, Gloucester Point, VA, United States and Susan E Ziegler, Memorial University, Earth Sciences, St John's, NF, Canada
Iron diagenesis controls CDOM sedimentary accumulation and optical properties in near-surface sediments of river-dominated continental shelves (655892)
Jordon Scott Beckler, Harbor Branch Oceanographic Institute, Ft. Pierce, FL, United States, Shannon Owings, Georgia Institute of Technology, United States, Eryn Melissa Eitel, California Institute of Technology, Pasadena, CA, United States, Edouard Metzger, LPG-BIAF Univ Angers, France, Andrew Stancil, Florida Atlantic Univeristy, Fort Pierce, FL, United States, Christophe Rabouille, Lab Sci Climat & Environnement, Gif Sur Yvette Cedex, France and Martial Taillefert, Georgia Institute of Technology, School of Earth and Atmospheric Sciences, Atlanta, GA, United States
Isotopic composition of oceanic dissolved black carbon reveals non-riverine source (646553)
Sasha Wagner, Rensselaer Polytechnic Institute, Earth and Environmental Sciences, Troy, NY, United States, Jay Brandes, University of Georgia, Skidaway Institute of Oceanography, Department of Marine Sciences, Savannah, GA, United States, Robert G Spencer, Florida State University, Department of Earth, Ocean and Atmospheric Science, Tallahassee, FL, United States, Kun Ma, University of Georgia, Skidaway Institute of Oceanography, Savannah, United States, Sarah Rosengard, University of British Columbia, Vancouver, BC, Canada, Jose Mauro Sousa Moura, Federal University of Western Para, Santarem, Brazil and Aron Stubbins, Northeastern University, Boston, MA, United States
Wildfire Ash Promotes Growth of Santa Barbara Channel Phytoplankton Communities Under Low Nutrient Conditions (636175)
Tanika M Ladd1, Adriana Ramirez Negron1, Sylvia M Kim2 and Debora Iglesias-Rodriguez2, (1)University of California, Santa Barbara, Ecology, Evolution, and Marine Biology, Santa Barbara, CA, United States, (2)University of California, Santa Barbara, Ecology, Evolution, and Marine Biology, Santa Barbara, United States
Rapid Variability in Subsurface Dissolved Oxygen along the Terrestrial-Aquatic-Interface Driven by Tidal Inundation (643359)
Ruby N Ghosh1, Dean D Shooltz2, Michael J Freeman1, Reza Loloee3, Terry Ball3, Charles McIntire1, Eric Mollon1, Nicholas D Ward4, Gary A Gill5, Allison Myers-Pigg6 and Li-Jung Kuo6, (1)Opti O2, LLC, Okemos, MI, United States, (2)Opti O2, Okemos, MI, United States, (3)Opti O2, LLC, Okemos, United States, (4)Pacific Northwest National Laboratory, Richland, United States, (5)Pacific Northwest National Laboratory, Richland, WA, United States, (6)Pacific Northwest National Laboratory, Marine Sciences Laboratory, Richland, WA, United States
Photochemical dissolution of buoyant microplastics to dissolved organic carbon: Rates and microbial impacts (657128)
Aron Stubbins1, Lixin Zhu2, Shiye Zhao2, Daoji Li2, Thais B Bittar3, Robert G Spencer4, David C Podgorski5 and Kara L Lavender Law6, (1)Northeastern University, Boston, MA, United States, (2)East China Normal University, State Key Laboratory of Estuarine and Coastal Research, Shanghai, China, (3)Northeastern University, Marine Science Center, Boston, MA, United States, (4)Florida State University, Tallahassee, United States, (5)University of New Orleans, Department of Chemistry, New Orleans, LA, United States, (6)Sea Education Association, Woods Hole, MA, United States