CT44A:
The Biogeochemistry of Dissolved Organic Matter (DOM) II Posters


Session ID#: 9350

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, University of Oldenburg, ICBM-MPI Bridging Group for Marine Geochemistry, Institute for Chemistry and Biology of the Marine Environment, Oldenburg, Germany
Chairs:  Aron Stubbins, Skidaway Institute of Oceanography, University of Georgia, Savannah, GA, United States, Sasha Wagner, Skidaway Institute of Oceanography, Savannah, GA, United States, Jutta Niggemann, University of Oldenburg, Research Group for Marine Geochemistry (ICBM-MPI Bridging Group), Oldenburg, Germany, Alison Buchan, University of Tennessee, Department of Microbiology, Knoxville, TN, United States, Rob Fatland, Microsoft Corporation, Redmond, WA, United States, Daniel Repeta, Woods Hole Oceanographic Institution, Department of Marine Chemistry and Geochemistry, Woods Hole, MA, United States and Helena Osterholz, University of Oldenburg, Oldenburg, Germany; Max Planck Institute for Marine Microbiology, Bremen, Germany
Moderators:  Thorsten Dittmar, Carl von Ossietzky University Oldenburg, Institute for Chemistry and Biology of the Marine Environment (ICBM), Oldenburg, Germany; University of Oldenburg, ICBM-MPI Bridging Group for Marine Geochemistry, Institute for Chemistry and Biology of the Marine Environment, Oldenburg, Germany and Jutta Niggemann, University of 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
Student Paper Review Liaisons:  Helena Osterholz, Max Planck Institute for Marine Microbiology, Bremen, Germany; University of Oldenburg, Oldenburg, Germany and Alison Buchan, University of Tennessee, Department of Microbiology, Knoxville, TN, 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:

 
CT43A-07
Amino Acid Enantiomeric Ratios in Semi-Labile vs. Refractory Dissolved Organic Matter: Implications for a Microbial N Pump (92478)
Amy Lynn Bour1, Taylor Broek2, Elizabeth J Gier1 and Matthew D Mccarthy1, (1)University of California Santa Cruz, Santa Cruz, CA, United States, (2)University of California Santa Cruz, Ocean Sciences Department, Santa Cruz, CA, United States
 
CT44A-0204
Environmental Dynamics of Dissolved Black Carbon in the Amazon River (88766)
Jesse Alan Roebuck Jr, Florida International University, Chemistry and Biochemistry, Miami, FL, United States, Michael Gonsior, University of Maryland Center for Environmental Science, Chesapeake Biological Laboratory, Solomons, MD, United States, Alex Enrich-Prast, UFRJ Federal University of Rio de Janeiro, Rio De Janeiro, Brazil and Rudolf Jaffe, Florida International University, Southeast Environmental Research Center, Miami, FL, United States
 
CT44A-0205
Spatiotemporal variations in chromophoric dissolved organic matter in the Saint Louis Bay, northern Gulf of Mexico (93721)
Zhengzhen Zhou1, Donald Redalje2, Stephan Dixon Howden3 and Laodong Guo1, (1)Univ of Wisconsin-Milwaukee, Milwaukee, WI, United States, (2)University of Southern Mississippi, Department of Marine Science, Stennis Space Center, MS, United States, (3)The University of Southern Mississippi, Division of Marine Science, Stennis Space Center, MS, United States
 
CT44A-0206
Assessing Environmental Drivers of DOC Fluxes in the Shark River Estuary: Modeling the Effects of Climate, Hydrology and Water Management (87190)
Peter Regier1,2, Henry Briceno3 and Rudolf Jaffe1,3, (1)Florida International University, Chemistry and Biochemistry, Miami, FL, United States, (2)Florida International University, Southeast Environmental Research Center and Dept. of Chemistry and Biochemistry, Miami, FL, United States, (3)Florida International University, Southeast Environmental Research Center, Miami, FL, United States
 
CT44A-0207
Investigating the Chemical Composition and Bioavailability of Arctic River Dissolved Organic Matter (DOM) Using Biomarkers (92872)
Maria Fernanda Canedo-Oropeza1,2, Karl Kaiser3 and Rainer M W Amon1,3, (1)Texas A & M University College Station, College Station, TX, United States, (2)Texas A & M University Galveston, Galveston, TX, United States, (3)Texas A&M University at Galveston, Marine Sciences, Galveston, TX, United States
 
CT44A-0208
Molecular and Isotopic Characterization of DOM on the East Siberian Shelf, Arctic Ocean. (91232)
Barbara Deutsch1, Thorsten Dittmar2, Marcus Sundbom3, Igor Peter Semiletov4 and Christoph Humborg3,5, (1)Stockholm University, Baltic Sea Centre, Stockholm, Sweden, (2)University of Oldenburg, ICBM-MPI Bridging Group for Marine Geochemistry, Oldenburg, Germany, (3)Stockholm University, Department of Environmental Science and Analytical Chemistry, Stockholm, Sweden, (4)University of Alaska Fairbanks, Fairbanks, AK, United States, (5)Bolin Centre for Climate Research, Baltic Sea Centre, Stockholm, Sweden
 
CT44A-0209
Molecular characterization of dissolved organic matter during the Arctic spring melt period (87910)
Celine Gueguen1, Vaughn Mangal2 and Yong Xiang Shi2, (1)Trent University, Department of Chemistry, Peterborough, ON, Canada, (2)Trent University, Environmental and Life Science Graduate Program, Peterborough, ON, Canada
 
CT44A-0210
The Organic Matter Molecular Characteristics of Pyrogenic Solids and Their Aqueous Leachable Fractions (93291)
Andrew S Wozniak1, Patrick Hatcher2, Siddhartha Mitra3, Kyle Wyman Bostick4 and Andrew R Zimmerman4, (1)School of Marine Science and Policy, University of Delaware, Lewes, DE, United States, (2)Old Dominion University, Department of Chemistry and Biochemistry, Norfolk, VA, United States, (3)East Carolina University, Greenville, NC, United States, (4)University of Florida, Department of Geological Sciences, Ft Walton Beach, FL, United States
 
CT44A-0211
Hydrothermal systems are a sink for dissolved black carbon in the deep ocean (91807)
Jutta Niggemann1, Jeffrey Alistair Hawkes1,2, Pamela E. Rossel1,3, Aron Stubbins4 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)Alfred Wegener Institute Helmholtz Center for Polar and Marine Research (AWI), HGF-MPG Group for Deep Sea Ecology and Technology, Bremerhaven, Germany, (4)Skidaway Institute of Oceanography, University of Georgia, Savannah, GA, United States
 
CT44A-0213
Bomb and Natural Dissolved Organic Radiocarbon in the Atlantic Ocean (90364)
Ellen R M Druffel1, Brett D Walker1, Sheila Griffin2, Alysha I Coppola2 and Christopher Glynn3, (1)University of California Irvine, Earth System Science, Irvine, CA, United States, (2)University of California Irvine, Irvine, CA, United States, (3)UC Irvine, Earth System Science, Irvine
 
CT44A-0214
The Marine Radiocarbon Reservoir Effect and its correlation with the ocean dynamics (93097)
Eduardo Queiroz Alves, University of Oxford, Oxford, United Kingdom
 
CT44A-0215
Sources and Transformation of Dissolved and Particulate Organic Nitrogen in the North Pacific Subtropical Gyre Indicated by Compound-Specific Nitrogen Isotope Analysis of Amino Acids (90531)
Yasuhiko T Yamaguchi, University of California Santa Cruz, Santa Cruz, CA, United States; The University of Tokyo, Atmosphere and Ocean Research Institute, Kashiwa, Chiba, Japan and Matthew D. McCarthy, University of California Santa Cruz, Ocean Sciences Department, Santa Cruz, CA, United States
 
CT44A-0216
High Phosphate Concentrations Accelerate Bacterial Peptide Degradation in Hypoxic Bottom Waters of the Northern Gulf of Mexico (93093)
Zhanfei Liu and Shuting Liu, The University of Texas at Austin, Marine Science Institute, Port Aransas, TX, United States
 
CT44A-0217
What constitutes the refractory component of pore-water dissolved organic matter? (87908)
Tomoko Komada1, Christina Fox2, Huan Lei Li2, David Burdige3, Hussain A Abdulla4 and James P Lewicki5, (1)San Francisco State University, Romberg Tiburon Center, San Francisco, CA, United States, (2)San Francisco State University, Romberg Tiburon Center, Tiburon, CA, United States, (3)Old Dominion University, Dept. of Ocean, Earth and Atmospheric Sciences, Norfolk, VA, United States, (4)Texas A&M University Corpus Christi, Department of Physical and Environmental Science, Corpus Christi, TX, United States, (5)Lawrence Livermore National Laboratory, Livermore, CA, United States
 
CT44A-0218
Universal molecular structures in natural dissolved organic matter (91146)
Thorsten Dittmar, University of Oldenburg, ICBM-MPI Bridging Group for Marine Geochemistry, Institute for Chemistry and Biology of the Marine Environment, Oldenburg, Germany and Maren Zark, University of Oldenburg, Oldenburg, Germany
 
CT44A-0220
CO2 Respiration/O2 Consumption in Response to Supplemental Organic Carbon: Implications for Natural DOC Composition in San Pedro Basin, CA (89643)
John Carlos Fleming1, William Berelson2, Lihini Aluwihare3 and Douglas E Hammond1, (1)University of Southern California, Los Angeles, CA, United States, (2)University of Southern California, Department of Earth Sciences, Los Angeles, CA, United States, (3)University of California San Diego, Scripps Institution of Oceanography, La Jolla, CA, United States
 
CT44A-0221
Effects of Low versus High Freshwater Discharge on the Concentration and Character of Dissolved Carbon, and on the Microbial Community Composition in the Skidaway River Estuary (Southeast USA). (92551)
Thais Bittar1, Stella Angela Berger2, Tina L Walters3, Elizabeth L Mann4, Robert G Spencer5, Aron Stubbins6, Marc Emil Frischer7 and Jay A. Brandes7, (1)Skidaway Institute of Oceanography, University of Georgia, Marine Sciences Department, Savannah, GA, United States, (2)Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB), Dep. 3, Experimental Limnology, Stechlin/OT Neuglobsow, Germany, (3)University of Georgia Skidaway Institute of Oceanography, Savannah, GA, United States, (4)Skidaway Institute of Oceanography, Savannah, GA, United States, current address: 34 Old Marlboro Road, Maynard MA 01754, (5)Florida State University, Department of Earth, Ocean and Atmospheric Science, Tallahassee, FL, United States, (6)Skidaway Institute of Oceanography, University of Georgia, Savannah, GA, United States, (7)University of Georgia, Skidaway Institute of Oceanography, Savannah, GA, United States
 
CT44A-0222
The Fate of Terrestrial Dissolved Organic Matter in Ocean Margins Investigated through Coupled Microbial-Photochemical Incubations of Vascular Plant Leachates (93850)
Danielle Renee Creeley, Texas A&M Univeristy, Oceanography, College Station, TX, United States, Karl Kaiser, Texas A&M University at Galveston, Marine Sciences, Galveston, TX, United States, Peter Hernes, University of California - Davis, Davis, CA, United States and Robert G Spencer, Florida State University, Earth, Ocean and Atmospheric Science, Tallahassee, FL, United States
 
CT44A-0224
Factors controlling concentration and decomposition of dissolved organic matter in pore water on the shelf of the East China Sea (89321)
Ying Wu1, Xiaona / Wang1, Qi Ye1, Mei S. Liu2 and Jing Zhang1, (1)East China Normal University, Shanghai, China, (2)Ocean University of China, College of Chemistry and Chemical Engineering, Qingdao, China
 
CT44A-0225
Molecular Features of Dissolved Organic Matter Produced by Picophytoplankton (92235)
Xiufeng Ma, Maureen Coleman and Jacob Waldbauer, University of Chicago, Geophysical Sciences, Chicago, IL, United States
 
CT44A-0226
Temperature and Ecotype Affect the Quality and Quantity of Prochlorococcus-Derived DOM (91883)
Megan Silbaugh1, Tristan M Jordan2 and Erik R Zinser1, (1)University of Tennessee, Microbiology, Knoxville, TN, United States, (2)University of Southern California
 
CT44A-0227
Production of Dissolved Organic Matter During Doliolid Feeding (89842)
Nicholas James Castellane, Savannah State University, Marine and Environmental Sciences, Savannah, GA, United States; Skidaway Institute of Oceanography, Savannah, GA, United States, Gustav Adolf Paffenhofer, University of Georgia, Skidaway Institute of Oceanography, Savannah, GA, United States and Aron Stubbins, Skidaway Institute of Oceanography, University of Georgia, Savannah, GA, United States
 
CT44A-0228
Assessing the Role of Dissolved Organic Phosphate on Rates of Microbial Phosphorus Cycling (93700)
Ana C Gonzalez Valdes, Harvard University, Earth and Planetary Sciences, Cambridge, MA, United States, Kimberly J Popendorf, Columbia University of New York, Palisades, NY, United States and Solange Duhamel, Lamont Doherty Earth Observatory, Palisades, NY, United States
 
CT44A-0229
Glycine as a potentially specific biomolecule of semi-labile dissolved organic matter in the ocean (90860)
Hiroshi Ogawa1, Nobue Saotome2, Akira Sakai2, Mario Uchimiya2 and Hideki Fukuda2, (1)The University of Tokyo, Atmosphere and Ocean Research Institute, Kashiwa, Japan, (2)The University of Tokyo, Atmosphere and Ocean Research Institute, Kashiwa, Chiba, Japan
 
CT44A-0230
LABILITY OF HIGH MOLECULAR WEIGHT DISSOLVED ORGANIC MATTER POLYSACCHARIDES INCREASES WITH MILD ACID OR BASE TREATMENT. (90820)
Byron Pedler Sherwood1, Oscar Sosa2, Craig Nelson1, Daniel Repeta3 and Edward DeLong1, (1)University of Hawaiʻi at Mānoa, Department of Oceanography, School of Ocean and Earth Science and Technology, Honolulu, HI, United States, (2)Daniel K. Inouye Center for Microbial Oceanography: Research and Education, University of Hawaii at Manoa, Honolulu, HI, United States, (3)Woods Hole Oceanographic Institution, Department of Marine Chemistry and Geochemistry, Woods Hole, MA, United States
See more of: Chemical Tracers, DOM and Trace Metals