B51D:
Understanding the Biogeochemistry of Nitrogen Inputs and Outputs from Molecular to Global Scales I


Submit an Abstract to this Session


Session ID#: 59990

Session Description:
Nitrogen (N) is abundant in the atmosphere as N2 gas but must undergo chemical changes that yield “fixed” N forms to be bioavailable. Fixed N can also be converted back to N2.   Global N cycling has undergone drastic alterations over time, with implications for the biosphere’s size and evolution and the biogeochemical cycling of other elements.  Natural processes of N input (e.g. biological nitrogen fixation, lightning) and output (e.g. denitrification, anammox) have controlled the amount of bioavailable N until the recent Anthropocene. However, uncertainties remain on the contributions, controls, mechanisms, and evolution of N flows. This session will unite researchers employing cross-disciplinary tools to address how N enters, is transformed, and exits the biosphere in modern and ancient systems over multiple size scales. We invite submissions on: controls on N inputs/outputs; N budgets; microbial physiology, biochemistry; ancient geochemical change inferred from protein/metabolism evolution; stable isotopes; geochemistry/OMICs-based measurement and model studies.
Primary Convener:  Xinning Zhang, Princeton University, Dept. of Geosciences and Princeton Environmental Institute, Princeton, NJ, United States
Conveners:  Betul Kacar, University of Arizona, Dept. of Molecular and Cell Biology, Dept. of Astronomy, Tucson, AZ, United States and Sebastian Kopf, University of Colorado at Boulder, Geological Sciences, Boulder, CO, United States
Primary Liaison:  Xinning Zhang, Princeton University, Dept. of Geosciences and Princeton Environmental Institute, Princeton, NJ, United States
Chairs:  Xinning Zhang, Princeton University, Dept. of Geosciences and Princeton Environmental Institute, Princeton, NJ, United States and Betul Kacar, University of Arizona, Dept. of Molecular and Cell Biology, Dept. of Astronomy, Tucson, AZ, United States
OSPA Liaison:  Sebastian Kopf, University of Colorado at Boulder, Geological Sciences, Boulder, CO, United States

Cross-Listed:
  • GC - Global Environmental Change
  • OS - Ocean Sciences
  • PP - Paleoceanography and Paleoclimatology
Index Terms:

0444 Evolutionary geobiology [BIOGEOSCIENCES]
0465 Microbiology: ecology, physiology and genomics [BIOGEOSCIENCES]
0469 Nitrogen cycling [BIOGEOSCIENCES]
4870 Stable isotopes [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]

Abstracts Submitted to this Session:

Origin and Evolution of Biological Nitrogen Fixation (397395)
John W Peters, Pullman, WA, United States, Richard Allen A White III III, University of North Carolina at Charlotte, Kannapolis, United States and Florence Mus, Washington State University, Pullman, WA, United States
Moss associated N fixation rates in Alaska are uncorrelated with the photosynthetic activity or the natural abundance 15N signature of host mosses (416070)
Julia Stuart, Northern Arizona University, Flagstaff, AZ, United States and Michelle C Mack, Northern Arizona University, Center for Ecosystem Science and Society, Flagstaff, AZ, United States
Evidence for phylogenetically and catabolically diverse diazotrophs in the deep-sea benthos (386331)
Bennett James Kapili1, Samuel E Barnett2, Daniel H Buckley2 and Anne E Dekas1, (1)Stanford University, Earth System Science, Stanford, United States, (2)Cornell University, School of Integrative Plant Science, Ithaca, NY, United States
Isotopic overprinting of Anammox on Denitrification as a Ubiquitous Feature of Environmental Nitrogen Cycling (436805)
Julie Granger, University of Connecticut, Marine Sciences, Groton, United States
The Metabolic Rate/Yield Balancing Act Driving N and C fluxes in Chemosynthetic NO3- Reducers. (462686)
Ileana M. Perez-Rodriguez, University of Pennsylvania, Philadelphia, PA, United States, Stefan Manfred Sievert, Woods Hole Oceanographic Institution, Biology, Woods Hole, MA, United States, Marilyn L Fogel, University of California Riverside, EDGE Institute, Riverside, CA, United States and Dionysis I Foustoukos, Carnegie Institution of Washington, Earth and Planets Laboratory, Washington Dc, United States
Natural forcing of the North Atlantic nitrogen cycle in the Anthropocene (414099)
Dr. Xingchen Tony Wang, PhD1, Anne L Cohen2, Victoria H Luu3, Haojia Abby Ren4, Zhan Su1, Gerald Hermann Haug5 and Daniel Mikhail Sigman6, (1)California Institute of Technology, Pasadena, CA, United States, (2)Woods Hole Oceanographic Institution, Woods Hole, United States, (3)Princeton University, Department of Geosciences, Princeton, United States, (4)National Taiwan University, Research Center for Future Earth, Taipei, Taiwan, (5)Max Planck Institute for Chemistry, Mainz, Germany, (6)Princeton University, Geosciences, Princeton, United States
Emergence of a cryptic nitrogen cycle in the co-evolution of Prochlorococcus and sympatric heterotrophs (398888)
Rogier Braakman1, Brandon Meyer Satinsky2, Krista Longnecker3, Jamie William Becker4, Keven Dooley5, Aldo Arellano5, Shane Lahman Hogle6, Melissa C. Kido Soule7, Elizabeth B Kujawinski3 and Sallie W Chisholm5, (1)Massachusetts Institute of Technology, Department of Earth, Atmospheric and Planetary Sciences, Cambridge, United States, (2)Massachusetts Institute of Technology, Cambridge, MA, United States, (3)Woods Hole Oceanographic Inst, Marine Chemistry & Geochemistry, Woods Hole, United States, (4)Haverford College, Biology, Haverford, PA, United States, (5)Massachusetts Institute of Technology, Civil and Environmental Engineering, Cambridge, MA, United States, (6)University of California, San Diego, Scripps Institution of Oceanography, La Jolla, CA, United States, (7)Woods Hole Oceanographic Institution, Marine Chemistry & Geochemistry, Woods Hole, United States

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