B31B:
The Current and Future Nitrogen Cycle: From Microbes to the Global Ocean I


Session ID#: 11473

Session Description:
New developments in nitrogen biogeochemistry were the subject of a session at the Ocean Sciences Meeting thirty years ago. Since then there have been many unexpected discoveries and new tools have been developed not only for studying the nitrogen cycle, but also for integrating the nitrogen cycle with other biogeochemical cycles and for extrapolating over space and time. This session will cover all aspects of the nitrogen cycle, from unanswered questions remaining from 3 decades ago, to newly discovered processes and features of nitrogen cycling in the global ocean. Speakers will be encouraged not only to talk about their recent work and discoveries, but to reserve time and present a slide on what they see as the future important and significant questions for understanding the global ocean nitrogen cycle, its biogeochemical interactions and impacts of global climate change.
Primary Chair:  Angela Landolfi, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
Chairs:  Wolfgang Koeve, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany and Lauren M Zamora, University of Maryland, College Park, Greenbelt, MD, United States; Oak Ridge Associated Universities Inc., Oak Ridge, TN, United States
Moderators:  Wolfgang Koeve1, Lauren M Zamora2,3 and Angela Landolfi1, (1)GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany(2)University of Maryland, College Park, Greenbelt, MD, United States(3)Oak Ridge Associated Universities Inc., Oak Ridge, TN, United States
Student Paper Review Liaisons:  Wolfgang Koeve, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany and Lauren M Zamora, University of Maryland, College Park, Greenbelt, MD, United States; Oak Ridge Associated Universities Inc., Oak Ridge, TN, United States
Index Terms:

1615 Biogeochemical cycles, processes, and modeling [GLOBAL CHANGE]
4805 Biogeochemical cycles, processes, and modeling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4845 Nutrients and nutrient cycling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
9399 General or miscellaneous [GEOGRAPHIC LOCATION]
Co-Sponsor(s):
  • IS - Instrumentation & Sensing Technologies
  • MM - Microbiology and Molecular Biology
  • PC - Past, Present and Future Climate
  • PP - Phytoplankton and Primary Production

Abstracts Submitted to this Session:

B31B-01
Missing Pieces to the Puzzle of Nitrogen Cycling in Ocean Oxygen Deficient Zones (ODZs) (89698)
Mark A Altabet1, Annie Bourbonnais1 and Bonnie X Chang2, (1)University of Massachusetts Dartmouth, New Bedford, MA, United States, (2)Univ Washington, Seattle, WA, United States
B31B-02
A Theoretical Basis for the Transition to Denitrification at Nanomolar Oxygen Concentrations (92950)
Emily Zakem, MIT, Earth Atmosphere and Planetary Science, Cambridge, MA, United States and Michael J Follows, Massachusetts Inst Tech, Cambridge, MA, United States
B31B-03
A Novel Anoxic Pathway for Urea and Cyanate in Marine Oxygen Deficient Zones Revealed by Combined Microbiological and Biogeochemical Tools (92976)
Brittany Widner1, Clara A Fuchsman2, Andrew R Babbin3, Qixing Ji4 and Margaret R Mulholland1, (1)Old Dominion University, Ocean, Earth and Atmospheric Sciences, Norfolk, VA, United States, (2)University of Washington, School of Oceanography, Seattle, WA, United States, (3)Massachusetts Institute of Technology, EAPS, Cambridge, MA, United States, (4)Princeton University, Department of Geosciences, Princeton, NJ, United States
B31B-04
Prevalence of Metalloenzymes in Oxygen Minimum Zones Extremities: Implicit Widespread Mesopelagic Nitrogen Cycling Activity and Potential Impacts of Deoxygenation on Nitrogen and Iron Biogeochemical Cycles (92192)
Mak A Saito1, Matthew McIlvin1, Alyson E Santoro2, Dawn M Moran1, Christopher L Dupont3, Patrick A Rafter4 and Carl H Lamborg5, (1)Woods Hole Oceanographic Institution, Woods Hole, MA, United States, (2)University of Maryland Center for Environmental Science, Horn Point Laboratory, Cambridge, MD, United States, (3)J. Craig Venter Institute, La Jolla, CA, United States, (4)University of California Irvine, Irvine, CA, United States, (5)University of California, Santa Cruz, Ocean Sciences, Santa Cruz, CA, United States
B31B-05
Bay of Bengal: An Oxygen Minimum Zone at the Tipping Point (91007)
Laura A Bristow1, Cameron M Callbeck2, Morten Larsen3, Mark A Altabet4, Julien Dekaezemacker2, Michael Forth3, Ronnie N Glud3, Marcel Martinus Maria Kuypers2, Gaute Lavik5, Mangesh Gauns6, Jana Milucka2, Syed Wajih Ahmad Naqvi6, Anil Pratihary6, Bo Thamdrup3, Alexander Treusch3 and Donald E Canfield3, (1)University of Southern Denmark, Nordic Center of Earth Evolution, Department of Biology, Odense M, Denmark, (2)Max Planck Institute for Marine Microbiology, Department of Biogeochemistry, Bremen, Germany, (3)University of Southern Denmark, Nordic Center of Earth Evolution, Department of Biology, Odense, Denmark, (4)University of Massachusetts Dartmouth, New Bedford, MA, United States, (5)Max Planck Institute for Marine Microbiology (MPI), Bremen, Germany, (6)National Institute of Oceanography, Goa, India
B31B-06
An alternative pathway for marine nitrous oxide production at oxic-anoxic interfaces from coupled biotic-abiotic reactions (92806)
Jennifer B Glass1, Chloe Lane Stanton2, Helena Ochoa2, Joshua A Haslun3, Hasand Gandhi3, Martial Taillefert4, Thomas J Dichristina2, Frank J Stewart2, Martin G Klotz5 and Nathaniel E Ostrom3, (1)Georgia Institute of Technology, Earth and Atmospheric Sciences, Atlanta, GA, United States, (2)Georgia Institute of Technology, Atlanta, GA, United States, (3)Michigan State University, East Lansing, MI, United States, (4)Georgia Institute of Technology, School of Earth and Atmospheric Sciences, Atlanta, GA, United States, (5)Queens College, City University of New York, Flushing, NY, United States
B31B-07
Niche separation of nitrifier and phytoplankton by light in the sunlit ocean (91496)
Hua-Xia Sheng, Xianhui Wan, Meng He, Yifan Zhu, Minhan Dai and Shuh-Ji Kao, State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, China
B31B-08
Modeling the nitrogen cycle one gene at a time (92625)
Victoria Coles1, Michael R Stukel2, Raleigh R Hood3, Mary Ann Moran4, John H Paul5, Brandon Satinsky4, Brian Zielinski6 and Patricia L Yager4, (1)University of Maryland Center for Environmental Science, Horn Point Laboratory, Cambridge, MD, United States, (2)Florida State University, Earth, Ocean and Atmospheric Science, Tallahassee, FL, United States, (3)University of Maryland Center for Environmental Science, Cambridge, MD, United States, (4)University of Georgia, Athens, GA, United States, (5)University of South Florida, College of Marine Science, St. Petersburg, FL, United States, (6)University of South Florida St. Petersburg, St Petersburg, FL, United States
See more of: Biogeochemistry and Nutrients