EC41B:
Understanding the Coastal Carbon Cycle and Biogeochemical Processes in the Coastal Ocean: Observations and Modeling I


Session ID#: 11337

Session Description:
Transfer of carbon across the terrestrial-marine boundary and carbon cycling within estuarine and coastal waters are important components of the global carbon cycle. Yet carbon and its transformations in coastal environments remain poorly characterized.  Estuaries have complex physical drivers and geochemical gradients that are coupled to watershed hydrology, tidal cycles, and extreme events (e.g., floods, droughts). Understanding the interactions of organic carbon in these environments, particularly in the context of global change, requires multiple observational approaches for identifying sources and ages, exchange mechanisms, transport pathways, and process time scales. We invite contributions that examine the dynamics of particulate and dissolved organic carbon in estuarine and coastal systems and how those processes mediate the transfer of carbon from land to sea and between the water column and sedimentary environments.

Possible topics include: transport of organic matter across the terrestrial- marine interface, partitioning of organic matter between particulate and aqueous phases, exchange between dissolved and particulate components, oxidation and burial in sediments, linkages between organic matter dynamics and nutrient cycling, response to seasonal variations and discharge perturbations, age determinations, biomarker and isotopic studies, as well as modeling approaches to carbon dynamics.

Primary Chair:  Elisabeth L Sikes, Rutgers University New Brunswick, New Brunswick, NJ, United States
Chairs:  Elizabeth A Canuel, Virginia Institute of Marine Science, Gloucester Point, VA, United States, Tomoko Komada, San Francisco State University, Romberg Tiburon Center, San Francisco, CA, United States, Thomas S Bianchi, University of Florida, Geological Sciences, Ft Walton Beach, FL, United States, Yizhen Li, Woods Hole Oceanographic Institution, Woods Hole, MA, United States and Weifeng Gordon Zhang, Woods Hole Oceanographic Institution, Department of Applied Ocean Physics & Engineering, Woods Hole, MA, United States
Moderators:  Tomoko Komada, San Francisco State University, Romberg Tiburon Center, San Francisco, CA, United States, Yizhen Li, Woods Hole Oceanographic Institution, Woods Hole, MA, United States and Elizabeth A Canuel, Virginia Institute of Marine Science, Gloucester Point, VA, United States
Student Paper Review Liaison:  Elizabeth A Canuel, Virginia Institute of Marine Science, Gloucester Point, VA, United States
Index Terms:

4217 Coastal processes [OCEANOGRAPHY: GENERAL]
4235 Estuarine processes [OCEANOGRAPHY: GENERAL]
4806 Carbon cycling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4850 Marine organic chemistry [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
Co-Sponsor(s):
  • B - Biogeochemistry and Nutrients

Abstracts Submitted to this Session:

Source to Sink: Broad and fine scale observations of terrestrial vs marine derived carbon in a Scottish sea loch (fjord). (92448)
Craig Smeaton1, William E N Austin2,3, Althea L Davies2 and John alexander Howe3, (1)University of St Andrews, School of Geography & Geosciences, St Andrews, KY16, United Kingdom, (2)University of St Andrews, School of Geography & Geosciences, St Andrews, United Kingdom, (3)Scottish Association of Marine Science, Biogeochemistry & Earth Science, Oban, United Kingdom
Organic Carbon Dynamics in Fjords: A Case Study of Fiordland, New Zealand (90032)
Xingqian Cui1, Thomas S Bianchi1 and Candida Savage2, (1)University of Florida, Department of Geological Sciences, Ft Walton Beach, FL, United States, (2)University of Otago, Department of Marine Sciences, Dunedin, New Zealand
Seasonal and Interannual Variability of the Dissolved Organic Matter Composition in the Delaware Estuary (91028)
Helena Osterholz1, David Kirchman2, Jutta Niggemann1 and Thorsten Dittmar3, (1)University of Oldenburg, Oldenburg, Germany, (2)University of Delaware, School of Marine Science and Policy, Lewes, DE, United States, (3)University of Oldenburg, ICBM-MPI Bridging Group for Marine Geochemistry, Institute for Chemistry and Biology of the Marine Environment, Oldenburg, Germany
Tidal Marshes as Pulsing Systems: New Estimates of Marsh-Carbon Export and Fate (93073)
Laura Ann Logozzo1, Patrick Neale2, Maria Tzortziou3, Natalie Nelson4 and Patrick Megonigal2, (1)CUNY City College, New York, NY, United States, (2)Smithsonian Env Research Ctr, Edgewater, MD, United States, (3)CUNY City College of New York, Earth and Atmospheric Sciences, New York, NY, United States, (4)University of Florida, Ft Walton Beach, FL, United States
Annual and Seasonal Changes in POC, PON, and Total Particulate Matter in the Gulf of Mexico (88070)
Rebecca Marie Gray, Mary Jo Richardson, Wilford D Gardner and Steven Francis DiMarco, Texas A&M University, Oceanography, College Station, TX, United States
Bioavailability of Riverine Dissolved Organic Matter in an Estuarine System: Evidence of the Priming Effect? (93571)
Benjamin L Peierls1, Alexandria Hounshell2, Chris L Osburn3 and Hans W Paerl2, (1)University of North Carolina at Chapel Hill, Institute of Marine Sciences, Morehead City, NC, United States, (2)University of North Carolina at Chapel Hill, Institute of Marine Sciences, Chapel Hill, NC, United States, (3)North Carolina State University, Marine, Earth, and Atmospheric Sciences, Raleigh, NC, United States
Sorting of Terrestrial and Marine Organic Matter along a Marginal Submarine Canyon: Radiocarbon and Biomarker Signatures of Surface Sediments (87669)
Hilary G Close1,2, Shannon Doherty3, Pamela Campbell2, Matthew D. McCarthy4 and Nancy Prouty2, (1)University of California Santa Cruz, Institute of Marine Sciences, Santa Cruz, CA, United States, (2)U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, CA, United States, (3)Allegheny College, Meadville, PA, United States, (4)University of California Santa Cruz, Ocean Sciences Department, Santa Cruz, CA, United States