CT002:
How organic carbon gets oxidized: Physical, chemical and biological processes


Session ID#: 27900

Session Description:
Heterotrophic transformation of organic matter drives elemental cycles in aquatic systems. The pool of reactive organic matter compounds (dissolved and particulate) consists of a complicated mixture of macromolecules, most of which cannot directly be assimilated by microorganisms. A wide range of transformations affects the ability of microorganisms to assimilate this complex pool of organic matter, including physical aggregation/disaggregation, sorption/desorption, and encapsulation within minerals, photochemical reactions, processing or repackaging by protists and zooplankton, and hydrolysis by extracellular enzymes. These transformations can occur across various groups of microorganisms ranging from bacteria, phytoplankton, protists, to zooplankton. Furthermore, interactions of diverse compound classes within microorganisms can affect the metabolism of those compounds, resulting in phenomena including the priming effect or co-metabolism. For this session, we invite presentations on the processes that transform complex organic molecules and affect their reactivity, including, but not limited to, extracellular enzymatic hydrolysis, uptake by microorganisms, and aggregation and disaggregation from estuarine to oceanic environments. By synthesizing research from a broad range of disciplines, we hope to better understand the interrelationships between processes that control the oxidation of organic carbon.
Primary Chair:  Andrew D Steen, University of Tennessee, Earth and Planetary Sciences, Knoxville, TN, United States
Co-chairs:  Shuting Liu, The University of Texas at Austin, Marine Science Institute, Port Aransas, TX, United States, Zhanfei Liu, UT Austin, Port Aransas, TX, United States and Kai Ziervogel, University of New Hampshire, Ocean Process Analysis Laboratory, Durham, NH, United States
Index Terms:

4804 Benthic processes, benthos [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4805 Biogeochemical cycles, processes, and modeling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4806 Carbon cycling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4825 Geochemistry [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
Cross-Topics:
  • BN - Biogeochemistry and Nutrients
  • E - Estuarine Processes
  • MM - Microbiology and Molecular Ecology
  • PS - Physical Oceanography: Mesoscale and Smaller

Abstracts Submitted to this Session:

James Collins1,2, Helen F Fredricks1, Julia M Diaz3,4, Jeff Shovlowsky Bowman5,6, Collin Ward7, Carly Moreno8, Krista Longnecker9, Adrian Marchetti8, Colleen M Hansel10, Hugh W Ducklow11 and Benjamin AS Van Mooy7, (1)Woods Hole Oceanographic Institution, Marine Chemistry & Geochemistry, Woods Hole, MA, United States, (2)University of Washington, School of Oceanography, Seattle, WA, United States, (3)Woods Hole Oceanographic Institution, Department of Marine Chemistry & Geochemistry, Woods Hole, MA, United States, (4)Skidaway Institute of Oceanography, Savannah, GA, United States, (5)Columbia University, Lamont-Doherty Earth Observatory, Palisades, NY, United States, (6)Scripps Institution of Oceanography, La Jolla, CA, United States, (7)Woods Hole Oceanographic Institution, Marine Chemistry and Geochemistry, Woods Hole, MA, United States, (8)University of North Carolina at Chapel Hill, Marine Sciences, Chapel Hill, NC, United States, (9)Woods Hole Oceanographic Inst, Woods Hole, MA, United States, (10)Woods Hole Oceanographic Institution, Department of Marine Chemistry and Geochemistry, Woods Hole, MA, United States, (11)Columbia University, Department of Earth and Environmental Sciences, New York, NY, United States
Shuting Liu1, Craig A Carlson1, Rachel Jane Parsons2, Keri Opalk1, Nicholas Huynh1, Stephen J Giovannoni3, Luis Manuel Bolanos3, Elizabeth B Kujawinski4, Yuehan Lu4,5, Krista Longnecker4, Zachary Landry3 and Chance English1, (1)University of California Santa Barbara, Marine Science Institute/Department of Ecology, Evolution and Marine Biology, Santa Barbara, CA, United States, (2)Bermuda Institute for Ocean Sciences, BIOS, St. George's, Bermuda, (3)Oregon State University, Department of Microbiology, Corvallis, OR, United States, (4)Woods Hole Oceanographic Institution, Marine Chemistry & Geochemistry, Woods Hole, MA, United States, (5)University of Alabama, Department of Geological Sciences, Tuscaloosa, AL, United States
Zhanfei Liu, UT Austin, Port Aransas, TX, United States, Shuting Liu, University of California Santa Barbara, Marine Science Institute/Department of Ecology, Evolution and Marine Biology, Santa Barbara, CA, United States and Kaijun Lu, The University of Texas at Austin, Marine Science Institute, Port Aransas, TX, United States
Nicholas Huynh1, Craig A Carlson1, Keri Opalk1, Shuting Liu1, Elisa R Halewood1, Rachel Jane Parsons2, Luis Manuel Bolanos3 and Stephen J Giovannoni3, (1)University of California Santa Barbara, Marine Science Institute/Department of Ecology, Evolution and Marine Biology, Santa Barbara, CA, United States, (2)Bermuda Institute for Ocean Sciences, BIOS, St. George's, Bermuda, (3)Oregon State University, Department of Microbiology, Corvallis, OR, United States
Kai Ziervogel, University of New Hampshire, Ocean Process Analysis Laboratory, Durham, NH, United States, Samantha Benton Joye, Univ Georgia, Athens, GA, United States and Carol Arnosti, The University of North Carolina at Chapel Hill, Department of Marine Sciences, Chapel Hill, NC, United States
Weilei Wang, University of California Irvine, Earth System Science, Irvine, CA, United States, Cindy Lee, Stony Brook Univ, Stony Brook, NY, United States and Francois Primeau, University of California Irvine, Irvine, CA, United States
Clayton Woodward Evans, Texas State University San Marcos, San Marcos, TX, United States, MAR Benavides, University of Copenhagen, Marine Biological Section, KĂžbenhavn K, Denmark, Ryan A Nuttall, University of Massachusetts Dartmouth, New Bedford, MA, United States, Candace Oviatt, University of Rhode Island, Narragansett, RI, United States and Pia Moisander, University of Massachusetts Dartmouth, Department of Biology, North Dartmouth, MA, United States