B53J:
Understanding Microbial Ecosystems Using Isotope Geochemistry II

Friday, 19 December 2014: 1:40 PM-3:40 PM
Chairs:  Magdalena R Osburn, Northwestern University, Evanston, IL, United States and James Moran, Pacific Northwest National Laboratory, Richland, WA, United States
Primary Conveners:  Magdalena R Osburn, Caltech-GPS, Pasadena, CA, United States; Northwestern University, Evanston, IL, United States
Co-conveners:  James Moran, Pacific Northwest National Laboratory, Richland, WA, United States
OSPA Liaisons:  James Moran, Pacific Northwest National Laboratory, Richland, WA, United States

Abstracts Submitted to this Session:

1:40 PM
B53J-01
 
The ecophysiology of sulfur isotope fractionation by sulfate reducing bacteria in response to variable environmental conditions
William Leavitt1, Alexander S Bradley1, David T Johnston2, Inês A. Cardoso Pereira3, Sofia Venceslau3 and Claire Wallace1, (1)Washington University in St Louis, St. Louis, MO, United States, (2)Harvard-Earth & Planet Science, Cambridge, MA, United States, (3)Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Oeiras, Portugal
1:55 PM
B53J-02
 
The Sulfur Isotope Composition of the Pyrite Burial Flux in the Modern Ocean
Alexandra v Turchyn, Gilad Antler, David J. Byrne and Xiaole Sun, University of Cambridge, Department of Earth Sciences, Cambridge, United Kingdom
2:10 PM
B53J-03
 
Single cell visualization of sulfur cycling in intertidal microbial mats
Katherine Dawson, Abigail Green and Victoria J Orphan, California Institute of Technology, Pasadena, CA, United States
2:25 PM
B53J-04
 
Protein Stable Isotope Fingerprinting (P-SIF): A New Tool to Understand Natural Isotopic Heterogeneity of Mixed Microbial Ecosystems
Ann Pearson, Wiebke Mohr, Tiantian Tang, Sarah Sattin and Roderick Bovee, Harvard University, Cambridge, MA, United States
2:40 PM
B53J-05
 
Effect of Salinity on the Stable Carbon Isotopic Composition of Microbial Mats and Associated Lipid Biomarkers
Linda L Jahnke1, Mary N. Parenteau2, Michael D. Kubo2 and David J Des Marais3, (1)NASA Ames, Moffett Field, CA, United States, (2)SETI Institute Mountain View, Mountain View, CA, United States, (3)NASA Ames Research Center, Moffett Field, CA, United States
2:55 PM
B53J-06
 
The Effects of Trimethylamine and Organic Matter Additions on the Stable Carbon Isotopic Composition of Methane Produced in Hypersaline Microbial Mat Environments
Cheryl A Kelley1, Brooke E Nicholson1, Claire S Beaudoin1, Angela M Detweiler2 and Brad Bebout2, (1)University of Missouri Columbia, Columbia, MO, United States, (2)NASA Ames Research Center, Moffett Field, CA, United States
3:10 PM
B53J-07
 
Quantifying Methane Oxidation Rates and Flux During the Deepwater Horizon Oil Spill with Measurements of Methane Stable Isotopic Ratios and Concentrations
Mengran Du, Sanya Institute of Deep-sea Science and Engineering, Chinese Academy of Sciences, Sanya, China, John D Kessler, University of Rochester, Rochester, NY, United States and Sean Sylva, Woods Hole Science Center Woods Hole, Woods Hole, MA, United States
3:25 PM
B53J-08
 
Heterogeneity of Groundwater Nitrogen Attenuation Elucidated by Combining Isotope Fluxes and Functional Gene Markers
Naomi S Wells, Helmholtz Centre for Environmental Research UFZ Halle, Halle, Germany, Kay Knoeller, UFZ, Halle, Germany and Uwe Kappelmeyer, Helmholtz Centre for Environmental Research UFZ Leipzig, Environmental Biotechnology, Leipzig, Germany
 
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