OB52B:
Linking Microbial, Isotope, Micronutrient, and Other Approaches to Understand Carbon and Nutrient Cycling in the Ocean I

Session ID#: 93137

Session Description:
Marine biogeochemistry is critical to the ocean’s ability to regulate atmospheric concentrations of carbon dioxide and other greenhouse gases. Here we examine the nutrient and microbial processes that are important for sustaining the marine biological carbon pump (e.g. new/export production, nitrogen fixation, denitrification), focusing on the use of stable isotope probing, ‘omics’techniques, trace metals, radioisotopes, micro-nutrients, numerical simulations, and more. The goal of this session is to bring together marine biogeochemists using these various methods to obtain a more accurate view of biologically-related elemental cycling in the ocean—from microbes to macro fauna.
Co-Sponsor(s):
  • CT - Chemical Tracers, Organic Matter and Trace Elements
  • ME - Marine Ecology and Biodiversity
Index Terms:

4806 Carbon cycling [OCEANOGRAPHY: BIOLOGICAL]
4840 Microbiology and microbial ecology [OCEANOGRAPHY: BIOLOGICAL]
4845 Nutrients and nutrient cycling [OCEANOGRAPHY: CHEMICAL]
4870 Stable isotopes [OCEANOGRAPHY: CHEMICAL]
Primary Chair:  Patrick A Rafter, University of California Irvine, Earth System Science, Irvine, CA, United States
Co-chairs:  Alexis Pasulka, California Polytechnic State University, San Luis Obispo, Department of Biological Sciences, San Luis Obispo, CA, United States, Robert T Letscher, University of New Hampshire, Earth Sciences, Durham, United States and Katherine Dawson, Caltech MC 100-23, Pasadena, United States
Primary Liaison:  Patrick A Rafter, University of South Florida, College of Marine Science, St Petersburg, United States
Moderators:  Alexis Pasulka, California Polytechnic State University, San Luis Obispo, Department of Biological Sciences, San Luis Obispo, CA, United States and Patrick A Rafter, University of South Florida, College of Marine Science, St Petersburg, United States
Student Paper Review Liaison:  Alexis Pasulka, California Polytechnic State University, San Luis Obispo, Department of Biological Sciences, San Luis Obispo, CA, United States

Abstracts Submitted to this Session:

OB52B-01
Diatom physiology controls silicic-acid leakage in response to iron fertilization (639104)
Mark Holzer, University of New South Wales, Sydney, NSW, Australia, Benoit Pasquier, University of California Irvine, Irvine, CA, United States, Timothy J DeVries, University of California, Santa Barabara, Earth Research Institute and Department of Geography, Santa Barabara, United States and Mark A Brzezinski, University of California, Marine Science Institute, Santa Barbara, CA, United States
OB52B-03
The Agulhas Current enhances the productivity of the subtropical Indian Ocean: evidence from coupled flow cytometry-high sensitivity nitrogen isotope analysis (646472)
Kolisa Yola Sinyanya1, Ruan Parrott2, Dr. Raquel Flynn3, David Y Walker Dr4, Yeongjun Ryu5, Daniel Mikhail Sigman5 and Sarah Fawcett6, (1)University of Cape Town, Department of Oceanography, Cape Town, South Africa, (2)University of Cape Town, Oceanography, Cape Town, South Africa, (3)University of North Carolina at Chapel Hill, Earth, Marine, and Environmental Sciences, Chapel Hill, North Carolina, United States, (4)Cape Peninsula University of Technology, Conservation and Marine Sciences, Cape Town, South Africa, (5)Princeton University, Princeton, United States, (6)University of Cape Town, Oceanography Department, Cape Town, South Africa
OB52B-04
Atmospheric Dust Inputs, Iron Cycling, and Biogeochemical Connections in the South Pacific Gyre (646885)
Frank J Pavia, California Institute of Technology, Pasadena, United States, Robert F Anderson, Lamont-Doherty Earth Obs, Palisades, United States, Gisela Winckler, Columbia University, Department of Earth and Environmental Sciences, New York, United States and Martin Q Fleisher, Lamont-Doherty Earth Obs, Palisades, NY, United States
OB52B-05
Non-monotonic Export of Bacterially-derived Sinking Particulate Organic Matter to the Deep Ocean (647368)
Yuan Shen1, Thomas P Guilderson1,2 and Matthew McCarthy1, (1)University of California Santa Cruz, Ocean Sciences Department, Santa Cruz, CA, United States, (2)Lawrence Livermore National Laboratory, Center for Accelerator Mass Spectrometry, Livermore, CA, United States
OB52B-06
Toward an Improved Understanding of the Subantarctic Biological Pump: Phytoplankton Group-specific Contributions to and Potential Drivers of Carbon Export in the Indian Sector of the Subantarctic Ocean (648136)
Heather Forrer1, Angela N Knapp2, Thomas G Bornman3, Rachel Thomas4, Samantha C Waterworth5, Rosemary Dorrington5 and Sarah Fawcett6, (1)Florida State University, Earth, Ocean and Atmospheric Sciences, Tallahassee, United States, (2)Florida State University, Earth, Ocean, and Atmospheric Sciences, Tallahassee, FL, United States, (3)South African Environmental Observation Network (SAEON), Elwandle Coastal Node, Gqeberha, South Africa, (4)Florida State University, Tallahassee, FL, United States, (5)Rhodes University, Department of Biochemistry and Microbiology, South Africa, (6)University of Cape Town, Oceanography, Cape Town, South Africa
OB52B-07
Organic Carbon Production and Remineralization in the Oligotrophic Water Column Assessed Using Compound-specific Stable Isotopic Composition of Particulate Fatty Acids (648299)
Maureen H Conte, Bermuda Institute of Ocean Sciences/ Marine Biological Laboratory, The Ecosystems Center, St.George's, Bermuda, Becky Hopkins, College of Wooster, Wooster, OH, United States, Marianna Karagiannis, University of Chicago, Chicago, United States, John C Weber, Marine Biological Laboratory, The Ecosystems Center, Woods Hole, MA, United States and Dr. Rut Pedrosa Pamies, Marine Biological Laboratory, The Ecosystems Center, Woods Hole, United States
OB52B-08
Incorporating phytoplankton genomic traits into cellular resource allocation models (656026)
Catherine Garcia1, George Hagstrom2, Alyse Larkin1, Lucas Ustick3, Simon Levin4, Michael W Lomas5 and Adam Martiny1,3, (1)University of California Irvine, Earth System Science, Irvine, CA, United States, (2)Princeton University, Ecology and Evolutionary Biology, Princeton, NJ, United States, (3)University of California Irvine, Ecology and Evolutionary Biology, Irvine, CA, United States, (4)Princeton University, Department of Ecology & Evolutionary Biology, Princeton, United States, (5)Bigelow Laboratory for Ocean Sciences, East Boothbay, United States
See more of: Ocean Biology and Biogeochemistry