CT34A:
Biogeochemistry of Dissolved Organic Matter and Dissolved Organic Matter-Microbe Interactions III Posters

Session ID#: 85800

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
  • 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:

 
Determination of the Size Distribution of Dissolved Organic Matter by Diffusion-Ordered Nuclear Magnetic Resonance Spectroscopy (DOSY) (639387)
Benjamin Nash Granzow1,2, Carl Johnson3 and Daniel Repeta1, (1)Woods Hole Oceanographic Institution, Marine Chemistry and Geochemistry, Woods Hole, MA, United States, (2)Massachusetts Institute of Technology, Earth, Atmospheric and Planetary Sciences, Cambridge, MA, United States, (3)Woods Hole Oceanographic Institution, Woods Hole, MA, United States
 
Improved mass accuracy and isotope confirmation through alignment of FT-ICR-MS data of complex natural mixtures. (647057)
Julian Merder1, Jan A Freund2, Ulrike Feudel1, Jutta Niggemann3, Gabriel Andreas Singer4 and Thorsten Dittmar1, (1)University of Oldenburg, Oldenburg, Germany, (2)University of Oldenburg, Theoretical Physics / Complex Systems, Oldenburg, Germany, (3)University of Oldenburg, ICBM-MPI Bridging Group for Marine Geochemistry, Oldenburg, Germany, (4)Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Berlin, Germany
 
Developing correction factors for in-situ fluorescence index (FI) sensors (651541)
Peter Regier, University of New Mexico, Civil, Construction and Environmental Engineering, Albuquerque, NM, United States and Jeffery S Horsburgh, Utah State University, Civil and Environmental Engineering, Logan, United States
 
Isotopic Measurements of Solid-Phase Extracted Dissolved Organic Matter in the Eastern Pacific Ocean (649375)
Christian Blair Lewis, University of California Irvine, Earth System Science, Irvine, CA, United States, Brett Walker, University of Ottawa, Department of Earth and Environmental Sciences, Ottawa, ON, Canada and Ellen R M Druffel, Univ California Irvine, Irvine, CA, United States
 
Hydrological management shifts dissolved organic matter chemistry in the world’s largest reservoir (642665)
Ding He1, Kai Wang2, Yu Pang3, Yongge Sun3, Chen He4, Penghui Li5, Shangbin Xiao6 and Shi Quan4, (1)School of Earth Sciences, Zhejiang University, Hangzhou, China, (2)Thomas Jefferson High School for Science and Technology, Alexandria, United States, (3)Zhejiang University, School of Earth Sciences, Hangzhou, China, (4)China University of Petroleum, State Key Laboratory of Heavy Oil Processing, Beijing, China, (5)Southern University of Science and Technology, Shenzhen, China, (6)China Three Gorges University, College of Hydraulic and Environmental Engineering, Yichang, China
 
Consistent Fine Scale Changes in Dissolved Organic Matter Composition with Depth at the Bermuda Atlantic Time Series Station (BATS) (641653)
Michael Gonsior1, Leanne Powers1, Norbert Hertkorn2, Philippe Schmitt-Kopplin2 and Madeline Lahm1, (1)University of Maryland Center for Environmental Science, Chesapeake Biological Laboratory, Solomons, MD, United States, (2)Helmholtz Zentrum Muenchen, German Research Center for Environmental Health, Research Unit Analytical Biogeochemistry, Neuherberg, Germany
 
Temporal and Spatial Variability of Dissolved Organic Matter Chemistry in the Northern Barents Sea Using UPLC-ESI-HRMS (637351)
Maria Digernes1, Murat V Ardelan2 and Alexandros Asimakopoulos1, (1)Norwegian University of Science and Technology, Chemistry, Trondheim, Norway, (2)Norwegian University of Science & Technology (NTNU), Trondheim, Norway
 
CHARACTERIZATION AND PHOTOREACTIVITY OF CHROMOPHORIC MARINE-DISSOLVED ORGANIC MATTER (655851)
David Gonzales1, Michael Rui Clemente Alves1, Duyen Dang1, Kimberly A Prather2 and Vicki H Grassian3, (1)University of California San Diego, Chemistry and Biochemistry, La Jolla, CA, United States, (2)Scripps Institution of Oceanography, La Jolla, CA, United States, (3)University of California San Diego, Chemistry and Biochemistry, La Jolla, United States
 
Analyzing A High-Resolution Depth Profile of Fluorescent Dissolved Organic Matter to Better Understand the Relationships and Distribution of Marine Chromophoric and Fluorescent Dissolved Organic Matter (657457)
Madeline Lahm, Leanne Powers and Michael Gonsior, University of Maryland Center for Environmental Science, Chesapeake Biological Laboratory, Solomons, MD, United States
 
Characterization of the Semi-Labile Polysaccharide Fraction of Marine Dissolved Organic Matter (652279)
Daniel Repeta and Benjamin Nash Granzow, Woods Hole Oceanographic Institution, Marine Chemistry and Geochemistry, Woods Hole, MA, United States
 
Characterizing dissolved organic matter by thermal slicing ramped pyrolysis gas chromatography mass spectrometry (656124)
Zhanfei Liu, UT Austin, Port Aransas, TX, United States, John O'Connor, University of Texas at Austin, Marine Science Institute, Port Aransas, TX, United States, Kaijun Lu, The University of Texas at Austin, Marine Science Institute, Port Aransas, TX, United States and Laodong Guo, Univ of Wisconsin-Milwaukee, Milwaukee, WI, United States
 
Concentrations and Reactivities of Refractory Carboxyl-rich Alicyclic Molecules (CRAM) in Contrasting Natural Waters (651377)
Matthew Weiser, Boston University, Earth and Environment, Boston, MA, United States, Karl Kaiser, Texas A&M University at Galveston, Marine Sciences, Galveston, TX, United States and Cedric G Fichot, Boston University, Dept. of Earth & Environment, Boston, United States
 
Radiocarbon in Dissolved Organic Carbon and Inorganic Carbon in the Pacific Ocean (655049)
Ellen R M Druffel1, Sheila Griffin2, Ning Wang3,4, Christian Blair Lewis5, Noreen Garcia6, Niels Hauksson5, Ann P McNichol7, Robert M Key8 and Brett Walker9, (1)University of California Irvine, Department of Earth System Science, Irvine, CA, United States, (2)University of California Irvine, Irvine, CA, United States, (3)Nanjing University, Nanjing, China, (4)Chinese Academy of Sciences, State Key Laboratory of Isotope Geochemistry, Guangzhou Institute of Geochemistry,, Beijing, China, (5)University of California Irvine, Earth System Science, Irvine, CA, United States, (6)University of California Irvine, Irvine, United States, (7)Woods Hole Oceanographic Institution, Geology and Geophysics, Woods Hole, MA, United States, (8)Princeton Univ, Princeton, NJ, United States, (9)University of Ottawa, Department of Earth and Environmental Sciences, Ottawa, ON, Canada