B033
Characterizing Dissolved Organic Matter Composition Across Spatial, Temporal, and Hydrologic Gradients

Session ID#: 82380

Session Description:
While variations in dissolved organic matter (DOM) concentrations have been examined in numerous settings and across a range of environmental gradients, concentration data alone provide limited insight into how DOM interacts with the physical, chemical, and biological environment.  The biogeochemical reactivity of DOM in natural waters is strongly linked to its molecular composition.  Various analytical techniques have been used to identify the molecular-scale characteristics of DOM, and these techniques encompass a range of sample analysis costs, sample storage, and preparation requirements, and also vary in the specificity of molecular information that they reveal.  In this session, we welcome presentations from researchers investigating changes in DOM composition and quality across gradients of space, time, and hydrologic regimes.  Research employing analytical techniques including (but not limited to) stable and radio isotopes, UV-Vis and fluorescence spectroscopy, nuclear magnetic resonance spectroscopy (NMR), and Fourier transform ion cyclotron resolution mass spectrometry (FT-ICR-MS) are particularly welcome.
Index Terms:

0428 Carbon cycling [BIOGEOSCIENCES]
0452 Instruments and techniques [BIOGEOSCIENCES]
1806 Chemistry of fresh water [HYDROLOGY]

Primary Convener:  Lucy Rose, University of Minnesota Twin Cities, Minneapolis, MN, United States
Convener:  Rachel S Gabor, The Ohio State University, School of Environment and Natural Resources, Columbus, OH, United States
Primary Liaison:  Lucy Rose, University of Minnesota Twin Cities, Minneapolis, MN, United States
 
The Composition of DOM and its Impact on Water Treatment: results from a transect across the UK (489092)
Catherine S Moody, University of Leeds, Leeds, LS2, United Kingdom
 
Pan-Arctic Molecular Fingerprints: Multi-Year FT-ICR MS Data from the Major Arctic Rivers Reveal Unique Seasonal- and River-Specific Molecular Formulae (490440)
Megan Irene Behnke, Florida State University, Department of Earth, Ocean, and Atmospheric Science, Tallahassee, FL, United States, Robert Max Holmes, Woods Hole Research Center, Falmouth, MA, United States, James W McClelland, University of Texas Marine Science Institute, Port Aransas, TX, United States, Suzanne Tank, University of Alberta, Biological Sciences, Edmonton, AB, Canada and Robert G Spencer, Florida State University, Department of Earth, Ocean and Atmospheric Science, Tallahassee, FL, United States; Florida State University, Earth, Ocean and Atmospheric Science, Tallahassee, FL, United States
 
Untargeted metabolic profiling of Sphagnum fallax from boreal peatlands identifies antimicrobial compounds and novel metabolites (495638)
Jane Fudyma1, Jamee Lyon1, Roya AminiTabrizi1, Hans Gieschen1, Rosalie Kae Chu2, David W Hoyt3, Jennifer E Kyle4, Jason Toyoda5, Elizabeth K Eder6, Allison Wong6, Nikola Tolic2, Heino M Heyman7, Nancy J Hess3, Thomas O Metz3 and Malak M Tfaily8, (1)University of Arizona, Environmental Science, Tucson, United States, (2)Pacific Northwest National Laboratory, Environmental Molecular Sciences Laboratory, Richland, WA, United States, (3)Pacific Northwest National Laboratory, Richland, WA, United States, (4)Pacific Northwest National laboratory, Richland, WA, United States, (5)Pacific Northwest National Laboratory, EMSL, Richland, WA, United States, (6)Pacific Northwest National Laboratory, Richland, United States, (7)Alaska Pacific University, EBSD, Richland, WA, United States, (8)University of Arizona, Environmental Science, Tucson, AZ, United States
 
Linking watershed characteristics to the age and composition of labile riverine dissolved organic matter: results from six rivers in Upstate New York (499164)
Mason Stahl1, Jack Wassik1, Jaclyn Gehring1, Connor Thomas Horan2 and Andrew S Wozniak3, (1)Union College, Geology, Schenectady, NY, United States, (2)Union College, Environmental Science, Policy and Engineering, Schenectady, NY, United States, (3)School of Marine Science and Policy, University of Delaware, Lewes, DE, United States
 
Quantifying biotic and abiotic controls on dissolved organic matter dynamics in natural systems using complementary analytical techniques (Invited) (508154)
Malak M Tfaily1,2, Hans Gieschen3, Jason Toyoda4, Rosalie Kae Chu5, Karl K Weitz2, David W Hoyt2, Elizabeth K Eder6 and Rachel Wilson7, (1)University of Arizona, Environmental Science, Tucson, AZ, United States, (2)Pacific Northwest National Laboratory, Richland, WA, United States, (3)University of Arizona, Environmental Science, Tucson, United States, (4)Pacific Northwest National Laboratory, EMSL, Richland, WA, United States, (5)Pacific Northwest National Laboratory, Environmental Molecular Sciences Laboratory, Richland, WA, United States, (6)Pacific Northwest National Laboratory, Richland, United States, (7)Florida State University, Tallahassee, FL, United States
 
Constraining Biomarkers as Dissolved Organic Matter Source Indicators: Past, Present, and Future Directions (523509)
Jennifer Harfmann, University of California Davis, Davis, CA, United States, Karl Kaiser, Texas A&M University at Galveston, Marine Sciences, Galveston, TX, United States, Chia-ying Chuang, Academia Sinica, Research Center for Environmental Changes, Nangang, Taipei, Taiwan, François Guillemette, Université du Québec à Trois-Riviéres, Department of Environmental Sciences, Trois-Riviéres, QC, Canada, Robert G Spencer, Florida State University, Earth, Ocean and Atmospheric Science, Tallahassee, FL, United States and Peter Hernes, University of California - Davis, Davis, CA, United States
 
Understanding the long-term concentration, flux, composition and processing of dissolved organic carbon in UK rivers (533818)
Fred Worrall1, Nicholas J K Howden2 and Tim Burt1, (1)University of Durham, Durham, United Kingdom, (2)University of Bristol, Bristol, BS8, United Kingdom
 
Spatio-temporal variability in dissolved organic carbon quantity and quality in Scottish headwater streams (539294)
Kieran Khamis, University of Birmingham, Birmingham, B15, United Kingdom, Iain Malcolm, Marine Scotland Science, Freshwater Fisheries Laboratory, Pitlochry, United Kingdom and David M Hannah, University of Birmingham, School of Geography, Earth and Environmental Sciences, Birmingham, B15, United Kingdom
 
Reproducible Determination of the Photo-sensitivity of Natural Dissolved Organic Matter (542317)
Alec Armstrong1, Leanne Powers2, Margaret Palmer3 and Michael Gonsior2, (1)University of Maryland College Park, College Park, MD, United States, (2)University of Maryland Center for Environmental Science, Chesapeake Biological Laboratory, Solomons, MD, United States, (3)National Socio-Environmental Synthesis Center (SESYNC), Univ of MD, Annapolis, MD, United States
 
A global perspective of riverine dissolved organic matter flux, composition and fate (542566)
Ryan Pereira1, Juliane Bischoff1, Sara Trojahn2 and Thomas Wagner1, (1)Heriot-Watt University, Lyell Centre, Edinburgh, United Kingdom, (2)Heriot-Watt University, Lyell Centre, Edinburgh, EH14, United Kingdom
 
Diel Cycling of Organic Matter Enrichments in the Surface Microlayer of the Broadkill River (554814)
Nicole R Coffey1, Andrew S Wozniak2, Cissy L Ming3 and Jessica I Czarnecki1, (1)University of Delaware, School of Marine Science and Policy, Lewes, DE, United States, (2)School of Marine Science and Policy, University of Delaware, Lewes, DE, United States, (3)Pennsylvania State University Main Campus, Department of Geosciences, University Park, PA, United States
 
Sunlight and iron control the oxidation of DOC leached from permafrost soils (556842)
Jennifer C Bowen, University of Michigan Ann Arbor, Ann Arbor, MI, United States, Collin P Ward, Woods Hole Oceanographic Institution, Marine Chemistry & Geochemistry, Woods Hole, MA, United States, George W Kling, University of Michigan, Ecology and Evolutionary Biology, Ann Arbor, MI, United States and Rose Merin Cory, University of Michigan Ann Arbor, Earth and Environmental Sciences, Ann Arbor, MI, United States
 
New Zealand, the Natural Laboratory: Using Fluorescence, Cave Dripwater Monitoring and Speleothem Archives to Investigate Climatic Impacts on Soil C Export through the Past 14 Kyr (559724)
Andrew Pearson, University of Waikato, Hamilton, New Zealand, Adam Hartland, Environmental Research Institute, School of Science, Faculty of Science and Engineering, University of Waikato, Hamilton, New Zealand, John Charles Hellstrom, University of Melbourne, School of Earth Sciences, Parkville, VIC 3010, Australia, Bethany R.S. Fox Dr, University of Huddersfield, Department of Biologial and Geographical Sciences, Huddersfield, United Kingdom, Brittany M. Ward, The University of Waikato, Environmental Research Institute, School of Science, Faculty of Science and Engineering, Hamilton, New Zealand and Marcus Vandergoes, GNS Science, Lower Hutt, New Zealand
 
Identification of ecosystem-specific markers in dissolved organic matter by ultrahigh resolution tandem mass spectrometry (571097)
Carsten Simon1, Tania P. Pimentel2, Maria Terezinha F. Monteiro3, Luiz A. Candido3, Daniel Petras4, Vanessa-Nina Roth5, Markus Lange1, Pieter Dorrestein4, Bruce Forsberg2, Sávio Ferreira3 and Gerd Gleixner1, (1)Max Planck Institute for Biogeochemistry, Jena, Germany, (2)Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Brazil, (3)Instituto Nacional de Pesquisas da Amazônia (INPA), Large Scale Biosphere-Atmosphere Experiment in Amazonia (LBA), Manaus, Brazil, (4)University of California San Diego, Collaborative Mass Spectrometry Innovation Center, La Jolla, CA, United States, (5)Thüringer Landesamt für Umwelt, Bergbau und Naturschutz (TLUBN), Jena, Germany
 
The Coupled Nature of DOM: Combining Microbial and Molecular Perspectives on Plant Litter Decomposition (573467)
Simon Benk1, Damien Eveillard2, Martin Taubert3, Kirsten Küsel3 and Gerd Gleixner1, (1)Max Planck Institute for Biogeochemistry, Jena, Germany, (2)University of Nantes, Nantes, France, (3)Aquatic Geomicrobiology, Institute of Biodiversity, Friedrich Schiller University, Jena, Germany
 
Factors controlling photo-degradation and photo-flocculation of DOM across acidic and basic watersheds in Southeast USA (581548)
Hongmei Chen1, Aleksandar I Goranov2, Alicia C. Bryan3, Macey Cohen2 and Patrick G Hatcher3, (1)Old Dominion University, Department of Chemistry and Biochemistry, Norfolk, VA, United States, (2)Old Dominion University, Norfolk, VA, United States, (3)Old Dominion University, Chemistry and Biochemistry, Norfolk, VA, United States
 
Exploring how land use may influence the composition and biodegradability of dissolved organic carbon in carbon-rich catchment drainage (585752)
Ying Zheng1, Susan Waldron1 and Hugh Flowers2, (1)School of Geographical and Earth Sciences, University of Glasgow, Glasgow, United Kingdom, (2)School of Chemistry, University of Glasgow, Glasgow, United Kingdom
 
Seasonal trends and relationships between surface and porewater dissolved organic matter in a disturbed semi-arid estuary (588752)
Audrey R Douglas, Texas A&M University Corpus Christi, Corpus Christi, TX, United States, Dorina Murgulet, Texas A & M University Corpus Christi, Corpus Christi, TX, United States and Hussain A Abdulla, Old Dominion university, Norfolk, VA, United States
 
Molecular properties of dissolved organic matter (DOM) in the subterranean estuary of a high-energy beach: Finding proxies for reactive transport (593084)
Heike Simon1, Janis Ahrens2, Melanie Beck2, Kai Schwalfenberg3, Oliver Zielinski3, Thorsten Dittmar1 and Hannelore Waska1, (1)University of Oldenburg, ICBM-MPI Bridging Group for Marine Geochemistry, Institute for Chemistry and Biology of the Marine Environment, Oldenburg, Germany, (2)University of Oldenburg, Microbiogeochemistry Group, Institute for Chemistry and Biology of the Marine Environment, Oldenburg, Germany, (3)University of Oldenburg, Marine Sensor Systems Group, Institute for Chemistry and Biology of the Marine Environment, Oldenburg, Germany
 
Hurricane Harvey’s impact on the DOM composition on the south shore of Corpus Christi Bay, Texas (594154)
Megan Greige1, Dorina Murgulet2, Audrey R Douglas2 and Hussain A Abdulla3, (1)Texas A&M University Corpus Christi, Corpus Christi, TX, United States, (2)Texas A & M University Corpus Christi, Corpus Christi, TX, United States, (3)Old Dominion university, Norfolk, VA, United States
 
Deterministic processes drive thermodynamics of stream corridor metabolites (595734)
James Stegen1, Robert Edward Danczak1, Vanessa Alessandra Garayburu-Caruso1, Lupita Renteria1, Jacqueline Wells2, Emily Bonnell Graham1, Rosalie Kae Chu3, Nikola Tolic3, Jason Toyoda4, Steven M Wondzell5, Adam S Ward6, Amy E Goldman2 and Skuyler Herzog7, (1)Pacific Northwest National Laboratory, Biological Sciences, Richland, WA, United States, (2)Pacific Northwest National Laboratory, Richland, WA, United States, (3)Pacific Northwest National Laboratory, Environmental Molecular Sciences Laboratory, Richland, WA, United States, (4)Pacific Northwest National Laboratory, EMSL, Richland, WA, United States, (5)USFS - Pacific Northwest Research Station, Corvallis, OR, United States, (6)Indiana University, School of Public and Environmental Affairs, Bloomington, IN, United States, (7)Indiana University Bloomington, Bloomington, IN, United States
 
The Hydro-bio-geochemistry of the Columbia River and its Tributary Confluences (597062)
Michael R Shields1, Thomas S Bianchi1, David E Butman2, Nicholas D Ward3, Evan Arntzen4, James Stegen5, Julia Indivero6, Albert Rivas-Ubach7, Yuliya Farris7, Nikola Tolic8 and Rosalie Kae Chu8, (1)University of Florida, Department of Geological Sciences, Gainesville, FL, United States, (2)University of Washington, School of Environmental and Forest Sciences, Seattle, WA, United States, (3)Pacific Northwest National Laboratory, Marine Sciences Laboratory, Richland, WA, United States, (4)Pacific Northwest National Lab, Richland, WA, United States, (5)Pacific Northwest National Laboratory, Biological Sciences, Richland, WA, United States, (6)Pacific Northwest National Laboratory, Marine Sciences Laboratory, Sequim, WA, United States, (7)Pacific Northwest National Laboratory, Richland, WA, United States, (8)Pacific Northwest National Laboratory, Environmental Molecular Sciences Laboratory, Richland, WA, United States
 
Extraction efficiency and molecular characterization of organic matter from soils and sediments using high resolution mass spectrometry (600215)
Jason Toyoda1, Rosalie Kae Chu2, Nikola Tolic2, Nancy J Hess3, Errol R Robinson1 and Malak M Tfaily4, (1)Pacific Northwest National Laboratory, EMSL, Richland, WA, United States, (2)Pacific Northwest National Laboratory, Environmental Molecular Sciences Laboratory, Richland, WA, United States, (3)Pacific Northwest National Laboratory, Richland, WA, United States, (4)University of Arizona, Tucson, AZ, United States
 
Hysteretic Behavior of DOC Characteristics in a Northern Minnesota Stream (600409)
Lucy Rose and Diana L Karwan, University of Minnesota Twin Cities, Minneapolis, MN, United States
 
Investigating stoichiometric regulation of priming effects in the hyporheic zone (610367)
Swatantar Kumar1, Vanessa Alessandra Garayburu-Caruso1, Lupita Renteria1, Jacqueline Wells2, Robert Edward Danczak1, Rosalie Kae Chu3, Nikola Tolic3, David W Hoyt3, Young-Mo Kim3, Meagan C Burnet1, Thomas W Wietsma3, William C Nelson1, Lye Meng Markillie3, Douglas Mcfarland2, James Moran3, Timothy D Scheibe2, James Stegen1 and Emily Bonnell Graham1, (1)Pacific Northwest National Laboratory, Biological Sciences, Richland, WA, United States, (2)Pacific Northwest National Laboratory, Richland, WA, United States, (3)Pacific Northwest National Laboratory, Environmental Molecular Sciences Laboratory, Richland, WA, United States
 
Impacts of Clear-cut Harvesting on Production and Subsurface Transport of Dissolved Organic Carbon in the Southern Canadian Rocky Mountains (611848)
Derek Mueller, Uldis Silins and Miles F Dyck, University of Alberta, Renewable Resources, Edmonton, AB, Canada
 
Photo-Transformation of Dissolve Organic Nitrogen in Coastal Regions (611853)
Sagar Shrestha, Corpus Christi, Texas, United States and Hussain A Abdulla, Texas A&M University Corpus Christi, Department of Physical and Environmental Science, Corpus Christi, TX, United States
 
Chemical characterization of dissolved organic matter in sequential Hurricane Harvey wet deposition samples (613261)
Alicia Fraire, Corpus Christi, Texas, United States, J. David D Felix, Texas A & M University Corpus Christi, Corpus Christi, TX, United States and Hussain A Abdulla, Texas A&M University Corpus Christi, Department of Physical and Environmental Science, Corpus Christi, TX, United States
 
Planktonic respiration and organic matter cycling using short-term in situ measurements (616060)
Sarah Ellen Johnston1, James Collins2, Angela Boysen3, Cynthia Soued4, David E Butman5, Kimberly Wickland6, Steven Sadro7, Anitra E Ingalls3, Brian Bergamaschi8, Lisamarie Windham-Myers9 and Matthew Bogard10, (1)University of Lethbridge, Lethbridge, Canada, (2)MIT/WHOI Joint Program in Oceanography, Cambridge, MA, United States, (3)University of Washington, School of Oceanography, Seattle, WA, United States, (4)University of Quebec at Montreal UQAM, Montreal, Canada, (5)Yale University, Hamden, CT, United States, (6)US Geological Survey, Water Resources Mission Area, Boulder, CO, United States, (7)University of California Davis, Environmental Science and Policy, Davis, CA, United States, (8)USGS California Water Science Center Sacramento, Sacramento, United States, (9)U.S. Geological Survey, Water Resources Mission Area, Menlo Park, CA, United States, (10)University of Washington Seattle Campus, Seattle, WA, United States
 
Insights into Dissolved Organic Matter (DOM) Compositional Shifts in Response to High Flow Events Across a Land Cover and Soil C:N Gradient. (617730)
Christopher Alan Yates1, Charlotte Lloyd2, Penny Johnes1, Fran Brailsford3, Helen Glanville4, Chris Evans5, Davey Jones3, Miles Marshall3 and Richard P Evershed2, (1)University of Bristol, School of Geographical Sciences, Bristol, United Kingdom, (2)University of Bristol, School of Chemistry, Bristol, United Kingdom, (3)Bangor University, Environment Centre Wales, Bangor, United Kingdom, (4)Keele University, School of Geography, Geology and the Environment, Keele, United Kingdom, (5)NERC center for Ecology and Hydrology, Bangor, United Kingdom
 
Influence of Salinity Gradient on Ni Complexation by Fluorescent Dissolved Organic Matter (FDOM) and Dispersal Across Estuaries in New Caledonia (634163)
Farid Juillot1, Cecile Dupouy2, Marie Bessard3, Laura Boher4 and Stephane Mounier2, (1)IMPMC: CNRS UMR 7590 - UPMC - MNHN - IRD, PARIS, France, (2)Mediterranean Institute of Oceanography, Environmental Chemistry, Marseille Cedex 09, France, (3)Mediterranean Institute of Oceanography, Marseille Cedex 09, France, (4)University of New Caledonia, Noumea, New Caledonia
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