CT43A:
Biogeochemistry of DOM and DOM-Microbe Interactions I

Session ID#: 92972

Session Description:
Dissolved organic matter (DOM) plays a major role for biogeochemical cycles in the ocean and on land.  On the one hand, DOM accumulates in the ocean over several millennia, contradicting established paradigms in geochemistry for organic matter stabilization.  On the other hand, DOM is the main mediator for the flux of energy in marine and freshwater ecosystems, as bacteria can only assimilate molecules in the dissolved phase.  The thousands-to-millions of molecules which comprise DOM carry the signatures of their source and subsequent journey through the environment.  This session will be split into two parts, where we invite contributions 1) from all areas of DOM biogeochemistry across various aquatic environments, including field, experimental, and modeling approaches which enhance our understanding of DOM quantification and its cycling in the environment and 2) which emphasize connections among organic biogeochemists, microbial ecologists, physicists, computational data analysts and all other scientists who are interested in advancing the progress at the intersection of microbiology and DOM biogeochemistry. Molecular-level and interdisciplinary studies are particularly welcome.  Also contributions that apply innovative analytical approaches, or identify novel concepts, fundamental challenges and the future directions of this fast growing field of research are encouraged.
Co-Sponsor(s):
  • MM - Microbiology and Molecular Ecology
  • MM - Microbiology and Molecular Ecology
  • OB - Ocean Biology and Biogeochemistry
Index Terms:

4805 Biogeochemical cycles, processes, and modeling [OCEANOGRAPHY: CHEMICAL]
4805 Biogeochemical cycles, processes, and modeling [OCEANOGRAPHY: CHEMICAL]
4806 Carbon cycling [OCEANOGRAPHY: BIOLOGICAL]
4808 Chemical tracers [OCEANOGRAPHY: CHEMICAL]
4825 Geochemistry [OCEANOGRAPHY: CHEMICAL]
4825 Geochemistry [OCEANOGRAPHY: CHEMICAL]
4840 Microbiology and microbial ecology [OCEANOGRAPHY: BIOLOGICAL]
4850 Marine organic chemistry [OCEANOGRAPHY: CHEMICAL]
Primary Chair:  Sasha Wagner, Rensselaer Polytechnic Institute, Earth and Environmental Sciences, Troy, NY, United States
Co-chairs:  Sinikka Lennartz, University of Oldenburg, ICBM-MPI Bridging Group for Marine Geochemistry, Institute for Chemistry and Biology of the Marine Environment, Oldenburg, Germany, Bryndan Paige Durham, University of Washington, School of Oceanography, Seattle, WA, United States and Helena Osterholz, University of Oldenburg, Oldenburg, Germany
Primary Liaison:  Sasha Wagner, Rensselaer Polytechnic Institute, Earth and Environmental Sciences, Troy, NY, United States
Moderators:  Sasha Wagner, Rensselaer Polytechnic Institute, Earth and Environmental Sciences, Troy, NY, United States and Sinikka Lennartz, Research Group for Marine Geochemistry (ICBM-MPI Bridging Group), Oldenburg, Germany
Student Paper Review Liaisons:  Sasha Wagner, Rensselaer Polytechnic Institute, Earth and Environmental Sciences, Troy, NY, United States and Sinikka Lennartz, Research Group for Marine Geochemistry (ICBM-MPI Bridging Group), Oldenburg, Germany

Abstracts Submitted to this Session:

Emerging Patterns in the Global Distribution of Fluorescent Dissolved Organic Matter (650418)
Urban Johannes Wünsch and Kathleen Murphy, Chalmers University of Technology, Architecture and Civil Engineering, Gothenburg, Sweden
Challenges and rewards of nontargeted studies of marine dissolved organic matter (DOM) composition using liquid chromatography coupled to tandem mass spectrometry (LC MS/MS): Case studies from coastal, marine environments. (644927)
Lihini Aluwihare1, Daniel Petras1, Irina Koester2, Louis-Félix Nothias3, Marcus Ludwig4, Kai Duhrkop4, Mingxun Wang3, Sebastian Böcker4 and Pieter Dorrestein3, (1)University of California San Diego, Scripps Institution of Oceanography, La Jolla, United States, (2)University of California San Diego, Scripps Institution of Oceanography, La Jolla, CA, United States, (3)University of California San Diego, Collaborative Mass Spectrometry Innovation Center, La Jolla, CA, United States, (4)Friedrich Schiller University of Jena, Chair for Bioinformatics, Jena, Germany
Novel Method to Separate Marine Dissolved Organic Matter Based on Thermal Reactivity (647896)
Margot Elizabeth White1, Tran B Nguyen2, Irina Koester1, Michael Beman3, Kenneth Smith4, Ann P McNichol5, Steven R Beaupre6 and Lihini Aluwihare7, (1)University of California San Diego, Scripps Institution of Oceanography, La Jolla, CA, United States, (2)Scripps Institution of Oceanography, La Jolla, United States, (3)University of California, Merced, Environmental Systems, Merced, CA, United States, (4)Monterey Bay Aquarium Research Institute, Moss Landing, CA, United States, (5)Woods Hole Oceanographic Institution, Geology and Geophysics, Woods Hole, MA, United States, (6)Stony Brook University, Stony Brook, NY, United States, (7)Scripps Institution of Oceanography, Geosciences Research Division, La Jolla, United States
Application of a novel method for the quantification of dissolved metabolites to diatom culture media and oligotrophic seawater (645798)
Brittany Widner, Woods Hole Oceanographic Institution, Marine Chemistry and Geochemistry, Woods Hole, MA, United States, Melissa C. Kido Soule, Woods Hole Oceanographic Institution, Marine Chemistry & Geochemistry, Woods Hole, MA, United States, Frank Ferrer-Gonzalez, University of Georgia, United States, Craig A Carlson, University of California Santa Barbara, Marine Science Institute/Department of Ecology, Evolution and Marine Biology, Santa Barbara, CA, United States, Mary Ann Moran, University of Georgia, Athens, GA, United States and Elizabeth B Kujawinski, Woods Hole Oceanographic Inst, Marine Chemistry & Geochemistry, Woods Hole, MA, United States
Characterization of Refractory DOC in the Deep Pacific Ocean Using Polymer Theory (642666)
Monica Orellana, University of Washington, Applied Physics Laboratory Polar Science Center, Seattle, WA, United States, Jarod Koopman, University of Washington, Applied Physics Lab Polar Science Center, Seattle, WA, United States, Sarah Bercovici, University of Oldenburg, Oldenburg, Germany and Dennis A Hansell, University of Miami, Miami, United States
Structural Elucidation of Deaminated Peptides in Anoxic Sediments (647296)
Hussain A Abdulla, Texas A & M University Corpus Christi, Corpus Christi, TX, United States, David Burdige, Old Dominion University, Norfolk, VA, United States and Tomoko Komada, San Francisco State Univ, Tiburon, CA, United States
Bioavailability and Molecular Structure of Dissolved Organic Matter in South Texas Rivers and Adjacent Estuaries (646306)
Kaijun Lu, The University of Texas at Austin, Marine Science Institute, Port Aransas, TX, United States, Kai Wu, Xiamen Huaxia University, College of environment and public health, Xiamen, China and Zhanfei Liu, UT Austin, Port Aransas, TX, United States
Optical and geochemical signatures suggest significant processing of dissolved organic matter transported across the terrestrial-aquatic interface within a boreal forest catchment (648980)
Alan Roebuck, Memorial University of Newfoundland, Earth Sciences, St John's, Canada, Allison Myers-Pigg, Pacific Northwest National Laboratory, Marine and Coastal Research Laboratory, Sequim, United States, Nicole Spehn, Memorial University of Newfoundland, NF, Canada and Susan E Ziegler, Memorial University, Earth Sciences, St John's, NF, Canada