CT44A:
The Biogeochemistry of Dissolved Organic Matter II Posters


Session ID#: 22508

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. 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 marine 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. Since inland waters are important contributors of DOM to coastal margins, we also welcome research which focuses on DOM biogeochemistry across the freshwater-to-marine continuum. 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.
Primary Chair:  Thorsten Dittmar, Carl von Ossietzky University Oldenburg, Institute for Chemistry and Biology of the Marine Environment (ICBM), Oldenburg, Germany
Co-chairs:  Rudolf Jaffe, Florida International University, Southeast Environmental Research Center, Miami, FL, United States, Sasha Wagner, Skidaway Institute of Oceanography, Savannah, GA, United States and Aron Stubbins, Skidaway Institute of Oceanography, University of Georgia, Savannah, GA, United States
Moderators:  Aron Stubbins, Northeastern University, Marine and Environmental Science; Chemistry and Chemical Biology; Civil and Environmental Engineering, Boston, MA, United States, Thorsten Dittmar, University of Oldenburg, ICBM-MPI Bridging Group for Marine Geochemistry, Institute for Chemistry and Biology of the Marine Environment, Oldenburg, Germany, Sasha Wagner, Skidaway Institute of Oceanography, Savannah, GA, United States and Rudolf Jaffe, Florida International University, Southeast Environmental Research Center and Dept. of Chemistry and Biochemistry, Miami, FL, United States
Student Paper Review Liaison:  Sasha Wagner, Skidaway Institute of Oceanography, Savannah, GA, United States
Index Terms:

4805 Biogeochemical cycles, processes, and modeling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4806 Carbon cycling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4840 Microbiology and microbial ecology [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4850 Marine organic chemistry [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
Cross-Topics:
  • BN - Biogeochemistry and Nutrients
  • MM - Microbiology and Molecular Ecology

Abstracts Submitted to this Session:

Microbial and photochemical decomposition of dissolved organic matter collected from macroalgal bed (310298)
Eri Iwasawa, Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8572, Japan, Shigeki Wada, University of Tsukuba, Shimoda Marine Research Center, Shimoda, Shizuoka 415-0025, Japan, Yuko Omori, Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki 305‑8572, Japan and Takeo Hama, Univ Tsukuba, Ibaraki, Japan
Dissolved organic carbon (DOC) export from surface sediments of a New England salt marsh (302122)
Hayley Schiebel, University of Massachusetts Boston, School for the Environment, Boston, MA, United States
Experimental analysis on the dynamics of humic-like fluorescence dissolved organic matter in the marine surface layer (307569)
Akira Saeki1, Yuko Omori2, Shigeki Wada3 and Takeo Hama2, (1)Master’s Program of Environmental Sciences, Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki 305‑8572, Japan, (2)Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki 305‑8572, Japan, (3)University of Tsukuba, Shimoda Marine Research Center, Shimoda, Shizuoka 415-0025, Japan
Phosphonate production by the marine cyanobacterium Prochlorococcus (318037)
Marianne Acker1, Shane Lahman Hogle2, Paul Berube2, Carl Johnson1, Sallie W Chisholm3 and Daniel Repeta1, (1)Woods Hole Oceanographic Institution, Woods Hole, MA, United States, (2)Massachusetts Institute of Technology, Cambridge, MA, United States, (3)Massachusetts Institute of Technology, Civil and Environmental Engineering, Cambridge, MA, United States
1H-NMR molecular-level composition of total dissolved organic matter in the northern Gulf of Mexico (318797)
Brett D Walker, University of California Irvine, Earth System Science, Irvine, CA, United States, Philip R Dennison, University of California, Irvine, Chemistry, Irvine, CA, United States, Hussain A Abdulla, Old Dominion university, Norfolk, VA, United States and Ellen R M Druffel, Univ California Irvine, Irvine, CA, United States
Elucidating structural and isomer information of natural dissolved organic matter in South Texas Rivers by a new ion mobility quadrupole time of flight (IM Q-TOF) LC/MS technique (320601)
Kaijun Lu1, Zhanfei Liu1 and Wayne S. Gardner2, (1)The University of Texas at Austin, Marine Science Institute, Port Aransas, TX, United States, (2)University of Texas at Austin, Marine Science Institute, Port Aransas, TX, United States
DEGRADATION AND TRANSFORMATION OF DISSOLVED ORGANIC MATTER REGULATED BY SIZE AND COMPOSITION (319612)
Laodong Guo, University of Wisconsin Milwaukee, Milwaukee, WI, United States and Huacheng Xu, Nanjing Institute of Geography and Limnology, China
Dissolved organic matter composition in a small agricultural watershed in the Atlantic Coastal Plain, Georgia, USA (322185)
Oliva Pisani1, Alisa Coffin1, David D Bosch1 and Timothy C Strickland2, (1)USDA, ARS, Tifton, GA, United States, (2)USDA-ARS, Southeast Watershed Research Unit, Tifton, GA, United States
Spatial and temporal variations of the quality of dissolved organic matter in a dimictic lake in Japan (307678)
Nagamitsu Maie1, Kazunori Shizuka2, Wataru Kakino3, Eikichi Shima3 and Hajime Tanji3, (1)Kitasato University, School of Veterinary Medicine, Aomori, Japan, (2)Kitasato University, Graduate School of Veterinary Science, Towada, Japan, (3)Kitasato University, School of Veterinary Medicine, Towada, Japan
Spatial Studies and Risk Assessment of Selected Pesticide Residues in Marine Samples from the Seto Inland Sea, Japan (309965)
Russel Chripine Chidya1, Sherif M Abdel-dayem2, Kazuhiko Takeda1 and Hiroshi Sakugawa3, (1)Hiroshima University, Department of Environmental Dynamics and Management, Higashihiroshima, Japan, (2)Kafrelsheikh University, Department of Pesticides, Faculty of Agriculture, Kafrelsheikh, Egypt, (3)Hiroshima University, Department of Environmental Dynamics and Management, Higashi-Hiroshima, Japan
HYDROLOGICAL CONTROLS ON THE SEASONAL VARIABILITY OF DISSOLVED AND PARTICULATE BLACK CARBON IN THE ALTAMAHA RIVER, GA (311537)
Jesse Alan Roebuck Jr1, Patricia M Medeiros2, Maria L Letourneau2 and Rudolf Jaffe3, (1)Florida International University, Chemistry and Biochemistry, Miami, FL, United States, (2)University of Georgia, Department of Marine Sciences, Athens, GA, United States, (3)Florida International University, Southeast Environmental Research Center and Dept. of Chemistry and Biochemistry, Miami, FL, United States
Molecular Characterization of Dissolved Black Nitrogen Produced by Photo-reactivity in a Headwater Stream (322103)
Hongmei Chen, Old Dominion University, Department of Chemistry and Biochemistry, Norfolk, VA, United States, Satish Myneni, Princeton University, Princeton, NJ, United States and Patrick Hatcher, Old Dominion University, Chemistry and Biochemistry, Norfolk, VA, United States
Provenance and Fate of Dissolved Black Carbon in the Western Arctic Ocean and Bering Sea (320595)
Ziming Fang1, Weifeng Yang2, Aron Stubbins3, Min Chen4, Qi Li1, Renming Jia1, Junjie Li1, Jing Zhu1 and Bo Wang1, (1)Xiamen University, Xiamen, China, (2)Xiamen University, State Key Laboratory of Marine Environmental Science and College of Ocean and Earth Sciences, Xiamen, China, (3)Northeastern University, Marine and Environmental Science; Chemistry and Chemical Biology; Civil and Environmental Engineering, Boston, MA, United States, (4)State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, China
Profiling Cu(II)-binding Organic Ligands in the Canadian Arctic Ocean (324080)
Richard Liam Nixon, University of Victoria, Victoria, BC, Canada and Andrew Ross, Fisheries and Oceans Canada, Institute of Ocean Sciences, Sidney, BC, Canada
Are polar oceans really strong carbon sinks? (305317)
Meilian Chen, Sejong University, Seoul, South Korea
Variability of DOM in the Baltic Sea and White Sea – effects on the carbonate system in coastal areas (312149)
Detlef E Schulz-Bull1, Bernd Schneider2 and Joanna J Waniek1, (1)Leibniz Institute for Baltic Sea Research, Rostock, Germany, (2)Baltic Sea Research Institute Warnemünde, Germany
Estuarine dynamics of dissolved organic matter as revealed by stable isotopes in the Pearl River Estuary, China (306245)
Feng Ye, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, China
Dissolved Organic Carbon in the Deep Pacific Ocean Includes Post-Bomb 14C (321729)
Ellen R M Druffel, Sheila Griffin, Ning Wang and Brett H. Walker, University of California Irvine, Earth System Science, Irvine, CA, United States
Investigating the Cycling of Dissolved Organic Carbon and Nitrogen along the West Antarctic Peninsula (308769)
Ribanna Dittrich1, Sian F Henley1, Hugh W Ducklow2, Greg L Cowie1, Raja Ganeshram1 and Michael Paul Meredith3, (1)University of Edinburgh, School of GeoSciences, Edinburgh, United Kingdom, (2)Columbia University, Department of Earth and Environmental Sciences, New York, NY, United States, (3)British Antarctic Survey, Cambridge, United Kingdom
Radiocarbon Content of Dissolved Organic Matter in the South Indian Ocean (313957)
Sarah K Bercovici, Applied Physics Laboratory, University of Washington, Polar Science Center, Seattle, WA, United States, Ann P McNichol, Woods Hole Oceanographic Institution, Geology and Geophysics, Woods Hole, MA, United States, Li Xu, China University of Geosciences Wuhan, Wuhan, China and Dennis A Hansell, RSMAS, University of Miami, Ocean Sciences Department, Miami, FL, United States

See more of: Chemical Tracers, Organic Matter and Trace Elements