B51A:
Biogeochemical Cycling of Silicon and Isotopes in Biogenic Silica I Posters

Session ID#: 4677

Friday, 19 December 2014: 8:00 AM-12:20 PM
Not an Option (Moscone West)
Chairs:  Claudia Ehlert, Max Planck Institute for Marine Microbiology, Bremen, Germany and George E A Swann, University of Nottingham, Nottingham, NG7, United Kingdom
Primary Convener:  Claudia Ehlert, Max Planck Institute for Marine Microbiology, Bremen, Germany
Co-conveners:  Patricia Grasse, iDiv University of Leipzig, Leipzig, Germany, Anson W Mackay, University College London, London, United Kingdom and George E A Swann, University of Nottingham, School of Geography, Nottingham, United Kingdom
OSPA Liaison:  Patricia Grasse, German Centre for Integrative Biodiversity Research (iDiv), Leipzig, Germany
Co-Sponsor(s):
  • OS - Ocean Sciences
Virtual Option?: No

Abstracts Submitted to this Session:

 
Significant Biogenic Silica Retention from Reverse Weathering in Non-deltaic Sediments (29501)
Jeffrey W Krause1,2, Ashley M Larson1, Elizabeth S Darrow1,3 and Ruth H Carmichael4,5, (1)Dauphin Island Sea Lab, Dauphin Island, AL, United States, (2)University of South Alabama, Stokes School of Marine and Environmental Sciences, Mobile, United States, (3)University of South Alabama, Department of Marine Sciences, Mobile, AL, United States, (4)Dauphin Island Sea Lab, Dauphin Island, United States, (5)University of South Alabama, Mobile, United States
 
Transformation of Silicon in a Coastal Sandy Beach Ecosystem: Insights from Stable Silicon Isotopes in Ground- and Porewaters (15539)
Claudia Ehlert1, Ronja Paffrath1, Anja Reckhardt2 and Katharina Pahnke1,3, (1)Max Planck Institute for Marine Microbiology, Bremen, Germany, (2)Institute for Chemistry and Biology of the Marine Environment (ICBM), Carl von Ossietzky Universität Oldenburg, Oldenburg, Germany, (3)University of Oldenburg, Institute for Chemistry and Biology of the Marine Environment, Oldenburg, Germany
 
Factors controlling the silicon isotope composition of dissolved silicate and biogenic silica in the Peruvian Upwelling (15305)
Patricia Grasse, German Centre for Integrative Biodiversity Research (iDiv), Leipzig, Germany, Kristin Haynert, University of Goettingen, J.F. Blumenbach Institute of Zoology and Anthropology, Goettingen, Germany, Mark A Brzezinski, University of California Santa Barbara, Marine Science Institute, Santa Barbara, CA, United States and Martin Frank, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
 
Dissolved Silicon Isotopic Compositions in the East China Sea: Water Mass Mixing Versus Biological Fractionation (4162)
Zhimian Cao1, Martin Frank1 and Minhan Dai2, (1)GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, (2)Xiamen University, State Key Laboratory of Marine Environmental Science and College of Ocean and Earth Sciences, Xiamen, China
 
Silicon Isotopes in Surface Waters during Summer in the Southern Ocean (4243)
Lucie Cassarino, University of Bristol, School of Earth Sciences, Bristol, United Kingdom and Christina L De La Rocha, University of Brest, IUEM, Brest, France; IUEM Institut Universitaire Européen de la Mer, Plouzané, France
 
A Paleogene Silicon Stable Isotope Record: Long-Term Carbon and Silicon Cycling Interaction Revealed By Sponges and Radiolarians (7309)
Guillaume Fontorbe1, Christina L De La Rocha2, Katharine R Hendry3, Patrick Frings1 and Daniel J Conley4, (1)Lund University, Lund, Sweden, (2)IUEM Institut Universitaire Européen de la Mer, Plouzané, France, (3)University of Bristol, Bristol, United Kingdom, (4)Lund University, Department of Geology, Lund, Sweden
 
Oxygen Isotope Analyses From Guaymas Basin Sediment Trap Diatoms (26590)
Anthony J Menicucci, University of California Berkeley, Museum of Paleontology, Berkeley, CA, United States, Howard J Spero, University of California Davis, Davis, CA, United States and Robert Thunell, Univ South Carolina, Columbia, SC, United States
 
Rapid changes in diatom silica surface charge density, silanol abundance, and oxygen isotope values elucidate silica maturation processes in biogenic silica (28007)
Wilson Wiedenheft, Northern Illinois University, Geology and Environmental Geosciences, DeKalb, IL, United States, Justin P Dodd, Texas A&M University, Oceanography, College Station, United States and Lee Sunderlin, Northern Illinois University, Chemistry and Biochemistry, DeKalb, IL, United States
 
Ecosystemic Postglacial Succession of Nettilling Lake (Baffin Island, Canada) Inferred by Oxygen Isotope Composition of Lacustrine Diatoms (12671)
Biljana Narancic1, Bernhard Chapligin2, Hanno Meyer2 and Reinhard Pienitz3, (1)Laval University, Quebec City, QC, Canada, (2)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Potsdam, Potsdam, Germany, (3)Centre d'études nordiques and Laval University, Quebec City, QC, Canada
 
Changes in the δ18O and δ30Si values of partially dissolved phytoliths: implications for environmental reconstruction (25655)
Andrea Jane Prentice, Iffat Jabeen and Elizabeth A Webb, University of Western Ontario, London, ON, Canada
 
The next chapter of direct phytolith 14C dating: debunking the myth of occluded photosynthetic carbon exclusivity (14231)
Guaciara Santos1, Araks Harutyunyan1, Anne E Alexandre2, Paul E Reyerson1,3, Kimberley L. Gallagher1 and Basile-Doelsch Isabelle2, (1)University of California Irvine, Irvine, CA, United States, (2)CEREGE, CNRS-Aix-Marseille Université, Aix en Provence, France, (3)University of Wisconsin La Crosse, Geography & Earth Science, La Crosse, WI, United States
 
Characterizing the Nature and Distribution of Phytolith Organic Matter Using Raman Spectroscopy (13885)
Kimberley L. Gallagher1, Alba Alfonso-Garcia1, Jessica Sanchez2, Araks Harutyunyan1, Guaciara Santos1 and Eric Potma1, (1)University of California Irvine, Irvine, CA, United States, (2)California State University Fullerton, Fullerton, CA, United States
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