OB014
Linking microbial, isotope, micro-nutrient, and other approaches to understand carbon and nutrient cycling in the ocean
Session ID#: 85240
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.
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, 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, NH, United States and Katherine Dawson, Caltech MC 100-23, Pasadena, CA, United States
Primary Liaison: Patrick A Rafter, University of California, Irvine, Irvine, CA, United States
Mangroves and seagrasses as nutrient subsidies for coral reefs in the Red Sea (636805)
Aislinn Dunne, King Abdullah University of Science and Technology, Red Sea Research Center, Thuwal, Saudi Arabia, Ulrich Struck, Leibniz-Institut für Evolutions- und Biodiversitätsforschung, Museum für Naturkunde, Berlin, Germany and Burton H Jones, King Abdullah University of Science and Technology (KAUST), Red Sea Research Center, Thuwal, Saudi Arabia
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 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
Nitrogen fixation can support a substantial fraction of pelagic primary production in Brazilian waters (640290)
Ana Fernández-Carrera, University of Vigo, Ecoloxia e Bioloxia Animal, Ourense, Spain, Amalia Maria Sacilotto Detoni, Instituto Nacional de Pesquisas Espaciais, São José dos Campos, Brazil, Peter Brandt, GEOMAR, Kiel, Germany and Ajit Subramaniam, Columbia University, Lamont-Doherty Earth Observatory, Palisades, NY, United States
Controls on dissolved organic carbon and nitrogen distributions in the upper South Pacific Ocean (643503)
Mariana Bernardi Bif, Monterey Bay Aquarium Research Institute (MBARI), Moss Landing, CA, United States, Annie Bourbonnais, University of South Carolina, School of the Earth, Ocean and Environment, Columbia, SC, United States, Julie Granger, University of Connecticut, Department of Marine Sciences, Groton, CT, United States, Mark A Altabet, Univ Massachusetts Darmouth, New Bedford, MA, United States and Dennis A Hansell, University of Miami, Miami, FL, United States
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 Parrott1, Raquel Flynn1, David Y Walker Dr2, Yeongjun Ryu3, Daniel Mikhail Sigman3 and Fawcett Sarah1, (1)University of Cape Town, Oceanography, Cape Town, South Africa, (2)Cape Peninsula University of Technology, Conservation and Marine Sciences, Cape Town, South Africa, (3)Princeton University, Princeton, NJ, United States
The kinetics of ammonium uptake and oxidation during winter across the Indian sector of the Southern Ocean (646519)
Mhlangabezi Mdutyana1, Xin Sun2, Jessica Burger1, Sandy Jane Thomalla3, Bess B Ward4 and Fawcett Sarah1, (1)University of Cape Town, Oceanography, Cape Town, South Africa, (2)Princeton University, Princeton, NJ, United States, (3)CSIR, Southern Ocean Carbon and Climate Observatory, South Africa, (4)Princeton University, Department of Geosciences, Princeton, NJ, United States
Atmospheric Dust Inputs, Iron Cycling, and Biogeochemical Connections in the South Pacific Gyre (646885)
Frank J Pavia1, Robert F Anderson2, Gisela Winckler3 and Martin Q Fleisher2, (1)California Institute of Technology, Pasadena, CA, United States, (2)Lamont-Doherty Earth Obs, Palisades, NY, United States, (3)Columbia University, Lamont-Doherty Earth Observatory, New York, NY, United States
Ammonium Dynamics in the South China Sea-Kuroshio and the Mid-Atlantic Shelf Break Frontal Zones (647335)
Yifan Zhu1, Minhan Dai2, Dennis Joseph McGillicuddy Jr3, Margaret R Mulholland1, Dreux Chappell1 and Sophie Clayton4, (1)Old Dominion University, Ocean, Earth and Atmospheric Sciences, Norfolk, VA, United States, (2)State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, China, (3)Woods Hole Oeanographic Institution, Woods Hole, MA, United States, (4)Old Dominion University, Ocean, Earth, and Atmospheric Sciences, Norfolk, VA, United States
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
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 Thomas2, Samantha C Waterworth4, Rosemary Dorrington4 and Sarah Fawcett1, (1)University of Cape Town, Oceanography, Cape Town, South Africa, (2)Florida State University, Tallahassee, FL, United States, (3)South African Environmental Observation Network (SAEON), Elwandle Coastal Node, South Africa, (4)Rhodes University, Department of Biochemistry and Microbiology, South Africa
Organic Carbon Production and Remineralization in the Oligotrophic Water Column Assessed Using Compound-specific Stable Isotopic Composition of Particulate Fatty Acids (648299)
Maureen H H Conte1, Becky Hopkins2, Marianna Karagiannis3, John C Weber4 and Rut Pedrosa Pamies4, (1)Bermuda Institute of Ocean Sciences, St.George's, Bermuda, (2)College of Wooster, Wooster, OH, United States, (3)University of Chicago, Chicago, IL, United States, (4)Marine Biological Laboratory, The Ecosystems Center, Woods Hole, MA, United States
Vitamin B12 and the microbial heterotrophic and autotrophic metabolism in two regions influence by the California current. (648537)
Josue Villegas-Mendoza1, Mary Carmen Ruiz-de la Torre2, Karina Lugo-Ibarra3, Diana Rodriguez3 and Andrés Cano-Suzan4, (1)Autonomous University of Baja California, Marine Science Faculty, Ensenada, BJ, Mexico, (2)Autonomous University of Baja California, Marine Science Faculty, Mexicali, BJ, Mexico, (3)Universidad Autónoma de Baja California, Facultad de Ciencias Marinas, Ensenada, BJ, Mexico, (4)Universidad Autónoma de Baja, Facultad de Ciencias Marinas, Ensenada, BJ, Mexico
Nitrification in Mode Water Formation Regions and its Contribution to Low Latitude Nitrogen Supply (652091)
Robyn Tuerena, University of Edinburgh, Edinburgh, United Kingdom, Pearse Buchanan, University of Liverpool, Department of Earth, Ocean and Ecological Sciences, Liverpool, United Kingdom, Alessandro Tagliabue, University of Liverpool, Liverpool, United Kingdom and Raja Ganeshram, University of Edinburgh, School of Geosciences, Edinburgh, United Kingdom
Nitrogenous Nutrient Preferences and Intracellular Ammonium Accumulation by the Bloom-Forming Mixotroph Green Noctiluca scintillans (652835)
Alisa D'Souza1, Aviva Schwarz2, Hao Luo3, Helga R Gomes4 and Joaquim I Goes4, (1)Peekskill High School, Peekskill, NY, United States, (2)Bronx High School of Science, Bronx, NY, United States, (3)Xiamen University, State Key Laboratory of Environmental Sciences, Xiamen, China, (4)Lamont Doherty Earth Obs, Palisades, NY, United States
Nitrite cycling experiments across the upper and lower boundaries of the Primary Nitrite Maximum in the Eastern Tropical North Pacific (653556)
Nicole Mayu Travis, Stanford University, Earth Systems Science, Stanford, CA, United States, Karen L Casciotti, Stanford University, Stanford, United States and Colette LaMonica Kelly, Stanford University, Stanford, CA, United States
Incorporating phytoplankton genomic traits into cellular resource allocation models (656026)
Catherine Garcia1, George Hagstrom2, Alyse Larkin1, Lucas Ustick3, Simon Levin2, Michael W Lomas4 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)Bigelow Lab for Ocean Sciences, East Boothbay, ME, United States
Primary productivity and nitrogen uptake in the eastern tropical Pacific Ocean (656789)
Margaret R Mulholland, Old Dominion University, Ocean, Earth and Atmospheric Sciences, Norfolk, VA, United States, Corday Selden, Cuernavaca, Mexico, Peter W Bernhardt, Old Dominion University, Department of Ocean, Earth and Atmospheric Sciences, Norfolk, VA, United States and Brittany Widner, Woods Hole Oceanographic Institution, Marine Chemistry & Geochemistry, Woods Hole, MA, United States
Amino Acid Carbon Isotopes in Core-Top Sediments of the Northern Labrador Sea and Baffin Bay Track the Origins of Export Productivity across Environmental Gradients (657623)
Shaomin Chen1, Chelsea Renée Fougère2, Blake S Tibert3, Markus Kienast4 and Owen Sherwood1, (1)Dalhousie University, Department of Earth Sciences, Halifax, NS, Canada, (2)Dalhousie University, Department of Earth Sciences, NS, Canada, (3)Dalhousie University, NS, Canada, (4)Dalhousie University, Department of Oceanography, Halifax, NS, Canada
A Targeted Lipidomics and Compound- Specific Isotope Ratio Analysis Approach in Profiling Microbial Community in Submarine Groundwater Discharge in Southern Luzon, Philippines (657746)
Jihan AL-Shdifat, The Marine Science Institute, University of the Philippines - Diliman, Quezon City, Philippines, Caroline Marie Jaraula, Marine Science Institute, University of the Philippines, Metro Manila, Philippines, M. Bayani Cardenas, University of Texas at Austin, Geological Sciences, Austin, TX, United States, Aljon Francis Koji Elegado, The Marine Science Institute, University of the Philippines- Diliman, Philippines, Danie Mao-Chang Liang, Academia Sinica, Taiwan, Raymond Rodolfo, Ateneo de Manila University, Philippines and Mark Lapus, Ridge to Reef Solutions, Inc., Philippines
