PC24A:
Nanoscale and Microscale Chemical Signatures in the Ocean: Small Signals from Climate and Microbes with a Big Impact Posters


Session ID#: 28502

Session Description:
Recent advances in micro and nano analytical techniques have opened new windows to a rich set of chemical information about the ocean. Whether reconstructing the pace of the ice ages, how the carbon cycle has changed with time, or the flow of metabolites between marine microbes, much of what we are learning about the ocean is based on tiny chemical signatures. Recorded as trace element anomalies, isotopic shifts, 13C and 14N labels, or biomarkers, these chemical signatures reflect how mass and energy move through systems across a range of scales. Some of the new tools that are providing access to small-scale signals include NanoSIMS (as applied to both enriched isotope and trace element experiments), atom probe tomography, laser ablation, near-field IR and Raman mapping approaches, new synchrotorn-based techniques, and ultra high-resolution mass spectrometry. We welcome contributions from researchers applying established nano- or micro-analytical techniques to marine systems, especially correlative imaging methods, as well as scientists developing new approaches. Sharing recent developments across these tools can inspire new applications and help us solve common challenges related to scaling and interpreting these rich data.
Primary Chair:  Alexander C Gagnon, University of Washington Seattle Campus, Seattle, WA, United States
Co-chairs:  Howard J Spero, University of California Davis, Department of Earth and Planetary Sciences, Davis, CA, United States and Anne E Dekas, Stanford University, Department of Earth System Science, Stanford, CA, United States
Moderators:  Alexander C Gagnon, University of Washington, School of Oceanography, Seattle, WA, United States and Howard J Spero, University of California Davis, Department of Earth and Planetary Sciences, Davis, CA, United States
Student Paper Review Liaison:  Alexander C Gagnon, University of Washington, School of Oceanography, Seattle, WA, United States
Index Terms:

4912 Biogeochemical cycles, processes, and modeling [PALEOCEANOGRAPHY]
4916 Corals [PALEOCEANOGRAPHY]
4924 Geochemical tracers [PALEOCEANOGRAPHY]
4944 Micropaleontology [PALEOCEANOGRAPHY]
Cross-Topics:
  • CT - Chemical Tracers, Organic Matter and Trace Elements
  • IS - Ocean Observatories, Instrumentation and Sensing Technologies
  • MG - Marine Geology and Sedimentology
  • OC - Ocean Change: Acidification and Hypoxia

Abstracts Submitted to this Session:

Environmental Variability near Hydrothermal Vent Recorded in Deep-sea Mussel Shells (315025)
Yuji Sano1, Yui Amamiya2, Naoko Sugihara2, Kentaro Tanaka2, Tomihiko Higuchi2, Naoto Takahata2 and Kotaro Shirai2, (1)Atmosphere and Ocean Research Institute, University of Tokyo, Kashiwa, Japan, (2)University of Tokyo, AORI, Kashiwa, Japan
The Role of Carbonic Anhydrase in Setting Patterns of Stable Isotope Variability in Corals and Vital Effects More Generally (315662)
Jess F Adkins1, Sang Chen1 and Alexander C Gagnon2, (1)California Institute of Technology, Pasadena, CA, United States, (2)University of Washington, School of Oceanography, Seattle, WA, United States
Slow 18O Exchange Between Dissolved Inorganic Carbon and Water During Biomineralization in the Planktic Foraminifera Orbulina universa (319586)
Alexander C Gagnon1, Elisa A Bonnin1, Brian Hopkinson2 and Ann D Russell3, (1)University of Washington, School of Oceanography, Seattle, WA, United States, (2)University of Georgia, Athens, GA, United States, (3)University of California Davis, Davis, CA, United States
Ba/Ca ratios in the non-spinose planktic foraminifer Neogloboquadrina dutertrei: Evidence for a particulate organic microhabitat (322666)
Jennifer S Fehrenbacher, Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR, United States, Ann D Russell, University of California Davis, Davis, CA, United States, Catherine V Davis, University of South Carolina Columbia, School of the Earth, Ocean, and Environment, Columbia, SC, United States, Howard J Spero, University California Davis, Davis, CA, United States and Edward Chu, University of California Davis, Department of Earth and Planetary Sciences, Davis, CA, United States
Carbon and Nitrogen Uptake and Exchange Between a Symbiotic Dinoflagellate and its Planktonic Foraminifera Host (308828)
Howard J Spero1, Charlotte LeKieffre2, Ann D Russell1, Jennifer S Fehrenbacher3, Emmanuelle Geslin4 and Anders Meibom5, (1)University of California Davis, Davis, CA, United States, (2)Ecole Polytechnique Fédérale de Lausanne Lausanne, Switzerland, Lausanne, Switzerland, (3)Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR, United States, (4)Université d’Angers, France, France, (5)EPFL Swiss Federal Institute of Technology Lausanne, Lausanne, Switzerland
The effect of crystal growth rate on foraminiferal calcite geochemistry: Lessons from Sr/Ca ratios (313766)
Elisa A Bonnin, University of Washington Seattle Campus, Seattle, WA, United States, Howard J Spero, University California Davis, Davis, CA, United States and Alexander C Gagnon, University of Washington, School of Oceanography, Seattle, WA, United States
Burial-Induced Oxygen-Isotope Re-Equilibration of Fossil Foraminifera Explains Ocean Paleotemperature Paradoxes (311362)
Sylvain Bernard, MNHN National Museum of Natural History Paris, IMPMC, Paris, France, Damien Daval, LHyGeS Laboratoire d'Hydrologie et de Géochimie de Strasbourg, Strasbourg Cedex, France, Philippe Ackerer, LHyGeS-UMR7517, EOST, INSU/CNRS, Strasbourg, France, Sylvain Pont, Muséum National d´Histoire Naturelle, Laboratoire de Minéralogie et Cosmochimie du Muséum, Paris, France and Anders Meibom, EPFL Swiss Federal Institute of Technology Lausanne, Lausanne, Switzerland
NanoSIMS isotopic imaging applied to the study of sub-cellular processes of relevance to marine biology (Invited) (310189)
Anders Meibom, Swiss Federal Institute of Technology Lausanne, Lausanne, Switzerland

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