CT44A:
The Biogeochemistry of Dissolved Organic Matter (DOM) II Posters
CT44A:
The Biogeochemistry of Dissolved Organic Matter (DOM) II Posters
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:
Amino Acid Enantiomeric Ratios in Semi-Labile vs. Refractory Dissolved Organic Matter: Implications for a Microbial N Pump (92478)
Spatiotemporal variations in chromophoric dissolved organic matter in the Saint Louis Bay, northern Gulf of Mexico (93721)
Assessing Environmental Drivers of DOC Fluxes in the Shark River Estuary: Modeling the Effects of Climate, Hydrology and Water Management (87190)
Investigating the Chemical Composition and Bioavailability of Arctic River Dissolved Organic Matter (DOM) Using Biomarkers (92872)
Molecular and Isotopic Characterization of DOM on the East Siberian Shelf, Arctic Ocean. (91232)
Molecular characterization of dissolved organic matter during the Arctic spring melt period (87910)
The Organic Matter Molecular Characteristics of Pyrogenic Solids and Their Aqueous Leachable Fractions (93291)
The Marine Radiocarbon Reservoir Effect and its correlation with the ocean dynamics (93097)
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)
High Phosphate Concentrations Accelerate Bacterial Peptide Degradation in Hypoxic Bottom Waters of the Northern Gulf of Mexico (93093)
What constitutes the refractory component of pore-water dissolved organic matter? (87908)
CO2 Respiration/O2 Consumption in Response to Supplemental Organic Carbon: Implications for Natural DOC Composition in San Pedro Basin, CA (89643)
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)
The Fate of Terrestrial Dissolved Organic Matter in Ocean Margins Investigated through Coupled Microbial-Photochemical Incubations of Vascular Plant Leachates (93850)
Factors controlling concentration and decomposition of dissolved organic matter in pore water on the shelf of the East China Sea (89321)
Temperature and Ecotype Affect the Quality and Quantity of Prochlorococcus-Derived DOM (91883)
Assessing the Role of Dissolved Organic Phosphate on Rates of Microbial Phosphorus Cycling (93700)
Glycine as a potentially specific biomolecule of semi-labile dissolved organic matter in the ocean (90860)
LABILITY OF HIGH MOLECULAR WEIGHT DISSOLVED ORGANIC MATTER POLYSACCHARIDES INCREASES WITH MILD ACID OR BASE TREATMENT. (90820)
See more of: Chemical Tracers, DOM and Trace Metals