CT51A:
The Biogeochemistry of Dissolved Organic Matter (DOM) III

Submit an Abstract to this Session

Session ID#: 11516

Session Description:
Dissolved organic matter (DOM) plays a major role for biogeochemical cycles in the ocean and on land. DOM contains as much carbon as all living biomass on the continents and oceans combined, and a similar amount of carbon as atmospheric CO2. Due to its great size, even minor changes in the DOM pool will impact global biogeochemical cycles and the heat budget of the Earth. The accumulation of DOM in the ocean over several millennia is enigmatic and contradicts established paradigms in geochemistry for organic matter stabilization. On the other hand, bacteria can only assimilate dissolved molecules, and DOM is therefore the main mediator for the flux of energy in the ocean and freshwater ecosystems. The DOM pool is now recognized as paralleling the sedimentary record as an information-rich set of tracers. These molecules carry the signatures of their source and subsequent journey through the environment. For this session we invite contributions from all areas of research on DOM biogeochemistry. Molecular-level studies and interdisciplinary studies that link microbiological or abiotic processes to DOM cycling are particularly welcome. Also contributions that identify novel concepts, fundamental challenges, and the future directions of this fast growing field of research are encouraged.
Primary Chair:  Thorsten Dittmar, Carl von Ossietzky University Oldenburg, Institute for Chemistry and Biology of the Marine Environment (ICBM), Oldenburg, Germany; University of Oldenburg, Institute for Chemistry and Biology of the Marine Environment (ICBM), Oldenburg, Germany
Chairs:  Aron Stubbins, Northeastern University, Marine and Environmental Sciences, Boston, MA, United States, Sasha Wagner, Skidaway Institute of Oceanography, Savannah, GA, United States, Alison Buchan, University of Tennessee, Department of Microbiology, Knoxville, United States, Rob Fatland, Microsoft Corporation, Redmond, WA, United States, Daniel Repeta, Woods Hole Oceanographic Institution, Department of Marine Chemistry and Geochemistry, Woods Hole, United States, Jutta Niggemann, Institute for Chemistry and Biology of the Marine Environment (ICBM), Carl von Ossietzky Universität Oldenburg, Oldenburg, Germany; University of Oldenburg, Institute for Chemistry and Biology of the Marine Environment (ICBM), Research Group for Marine Geochemistry (ICBM-MPI Bridging Group), Oldenburg, Germany and Helena Osterholz, University of Oldenburg, Oldenburg, Germany; Max Planck Institute for Marine Microbiology, Bremen, Germany
Moderators:  Jutta Niggemann, Institute for Chemistry and Biology of the Marine Environment (ICBM), Carl von Ossietzky Universität Oldenburg, Oldenburg, Germany; University of Oldenburg, Institute for Chemistry and Biology of the Marine Environment (ICBM), Research Group for Marine Geochemistry (ICBM-MPI Bridging Group), Oldenburg, Germany, Alison Buchan, University of Tennessee, Department of Microbiology, Knoxville, United States, Rob Fatland, Microsoft Corporation, Redmond, WA, United States and Daniel Repeta, Woods Hole Oceanographic Institution, Department of Marine Chemistry and Geochemistry, Woods Hole, United States
Student Paper Review Liaisons:  Rob Fatland, Microsoft Corporation, Redmond, WA, United States and Daniel Repeta, Woods Hole Oceanographic Institution, Department of Marine Chemistry and Geochemistry, Woods Hole, United States
Index Terms:

4805 Biogeochemical cycles, processes, and modeling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4825 Geochemistry [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4840 Microbiology and microbial ecology [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4850 Marine organic chemistry [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
Co-Sponsor(s):
  • B - Biogeochemistry and Nutrients
  • EC - Estuarine and Coastal
  • MM - Microbiology and Molecular Biology
  • PP - Phytoplankton and Primary Production

Abstracts Submitted to this Session:

CT51A-01
A Latitudinal Metabolome of the Atlantic Ocean (92986)
Winifred Johnson1, Melissa C. Kido Soule2, Krista Longnecker3 and Elizabeth B Kujawinski2, (1)MIT/WHOI Joint Program, Marine Chemistry & Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, MA, United States, (2)Woods Hole Oceanographic Institution, Marine Chemistry & Geochemistry, Woods Hole, United States, (3)Woods Hole Oceanographic Institution, Marine Chemistry and Geochemistry, Woods Hole, MA, United States
CT51A-02
Is the molecular diversity of marine dissolved organic matter already imprinted in the exometabolome of single strains? (91006)
Beatriz Elizabeth Noriega-Ortega1, Gerrit Wienhausen2, Thorsten Dittmar3, Meinhard Simon2 and Jutta Niggemann4, (1)University of Oldenburg, Research Group for Marine Geochemistry (ICBM-MPI Bridging Group), Oldenburg, Germany, (2)University of Oldenburg, Institute for Chemistry and Biology of the Marine Environment (ICBM), Biology of Geological Processes - Aquatic Microbial Ecology, Oldenburg, Germany, (3)University of Oldenburg, Institute for Chemistry and Biology of the Marine Environment (ICBM), Oldenburg, Germany, (4)Institute for Chemistry and Biology of the Marine Environment (ICBM), Carl von Ossietzky Universität Oldenburg, Oldenburg, Germany
CT51A-03
Bacterial Degradation of Phosphonates Bound to High-Molecular-Weight Dissolved Organic Matter Produces Methane and Other Hydrocarbons (89152)
Oscar Sosa, Daniel K. Inouye Center for Microbial Oceanography: Research and Education, University of Hawaii at Manoa, Honolulu, HI, United States, Sara Ferrón, University of Hawaii, Department of Oceanography, Honolulu, HI, United States, David M Karl, University of Hawaii at Manoa, Department of Oceanography, Honolulu, United States, Edward DeLong, University of Hawaiʻi at Mānoa, Department of Oceanography, School of Ocean and Earth Science and Technology, Honolulu, HI, United States and Daniel Repeta, Woods Hole Oceanographic Institution, Department of Marine Chemistry and Geochemistry, Woods Hole, United States
CT51A-04
Chemical fractionation-enhanced structural characterization of marine dissolved organic matter (93478)
Neal Arakawa, Scripps Instititution of Oceanography-UCSD, Marine Chemistry and Geochemistry, La Jolla, CA, United States and Lihini Aluwihare, University of California San Diego, Scripps Institution of Oceanography, La Jolla, United States
CT51A-05
Evidence for abiotic sulfurization of marine dissolved organic matter in sulfidic environments (91113)
Anika Maria Pohlabeln, University of Oldenburg, ICBM-MPI Bridging Group for Marine Geochemistry, Oldenburg, Germany, Jutta Niggemann, Institute for Chemistry and Biology of the Marine Environment (ICBM), Carl von Ossietzky Universität Oldenburg, Oldenburg, Germany and Thorsten Dittmar, University of Oldenburg, Institute for Chemistry and Biology of the Marine Environment (ICBM), Oldenburg, Germany
CT51A-06
Abiotic Addition of Sulfide to Dissolved Organic Matter (90347)
Brett A Poulin, United States Geological Survey, Boulder, United States; University of Colorado Boulder, Environmental Engineering, Boulder, CO, United States, Joseph Nolte Ryan, University of Colorado Boulder, Environmental Engineering, Boulder, United States, Kathryn Nagy, Univ Illinois at Chicago, Chicago, IL, United States, Aron Stubbins, Northeastern University, Marine and Environmental Sciences, Boston, MA, United States, Thorsten Dittmar, University of Oldenburg, Research Group for Marine Geochemistry (ICBM-MPI Bridging Group), Oldenburg, Germany and George Aiken, United States Geological Survey, Boulder, CO, United States
CT51A-08
Molecular Alteration of Marine Dissolved Organic Matter under Experimental Hydrothermal Conditions (89423)
Jeffrey Alistair Hawkes1,2, Christian Tobias Hansen3, Tobias Goldhammer4, Wolfgang Bach5,6 and Thorsten Dittmar1, (1)University of Oldenburg, Research Group for Marine Geochemistry (ICBM-MPI Bridging Group), Oldenburg, Germany, (2)Uppsala University, Analytical Chemistry, Chemistry-BMC, Uppsala, Sweden, (3)University of Oldenburg, ICBM, Oldenburg, Germany, (4)MARUM Center for Marine Environmental Research, University Bremen, Germany, (5)University of Bremen, MARUM – Center for Marine Environmental Sciences, Bremen, Germany, (6)University of Bremen, Faculty of Geosciences, Bremen, Germany
See more of: Chemical Tracers, DOM and Trace Metals