Biogeochemical Cycling of Silicon and Isotopes in Biogenic Silica II

Friday, 19 December 2014: 4:00 PM-6:00 PM
Chairs:  Claudia Ehlert, Max Planck Institute for Marine Microbiology, Bremen, Germany and George E A Swann, University of Nottingham, Nottingham, NG7, United Kingdom
Primary Conveners:  Claudia Ehlert, Max Planck Institute for Marine Microbiology, Bremen, Germany
Co-conveners:  Patricia Grasse, GEOMAR, Kiel, Germany, Anson W Mackay, University College London, London, United Kingdom and George E A Swann, University of Nottingham, Nottingham, NG7, United Kingdom
OSPA Liaisons:  Patricia Grasse, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany

Abstracts Submitted to this Session:

4:00 PM
Daniel J Conley1, Patrick Frings1, Wim Clymans1, Guillaume Fontorbe1 and Christina L De La Rocha2, (1)Lund University, Lund, Sweden, (2)IUEM Institut Universitaire Européen de la Mer, Plouzané, France
4:15 PM
Landscape cultivation alters δ30Si signature in terrestrial ecosystems.
Floor Ina Vandevenne1, Claire Delvaux2, Harold Huyghes2, Benedicta Ronchi3, Gerard Govers3, Ana Lúcia Barão1, Wim Clymans4, Patrick Meire1, Luc André2 and Eric Struyf1, (1)University of Antwerp, Department of Biology, Antwerp, Belgium, (2)Royal Museum for Central Africa, Tervuren, Belgium, (3)Catholic University of Leuven, Earth and Environmental Sciences, Heverlee, Belgium, (4)Lund University, Lund, Sweden
4:30 PM
Tracing diatom utilisation, and its fate, in Lake Baikal, Siberia: the application of silicon isotope geochemistry
Virginia N Panizzo1, George E A Swann1, Anson W Mackay2, Sarah Roberts1, Elena Vologina3, Michael Sturm4 and Matthew SA Horstwood5, (1)University of Nottingham, Nottingham, NG7, United Kingdom, (2)University College London, London, United Kingdom, (3)Russian Academy of Sciences, Moscow, Russia, (4)EAWAG Swiss Federal Institute of Aquatic Science and Technology, Duebendorf, Switzerland, (5)British Geological Survey Keyworth, Nottinghamshire, United Kingdom
4:45 PM
Salt Marshes as Sources and Sinks of Silica
Joanna Carey, Marine Biological Laboratory, Woods Hole, MA, United States and Robinson W Fulweiler, Boston University, Boston, MA, United States
5:00 PM
Deglacial changes in subarctic Pacific surface water hydrography and nutrient dynamics – a fresh perspective from diatom oxygen and silicon stable isotopes
Edith Maier1, Andrea Abelmann1, Rainer Gersonde1, Marie Meheust1, Bernhard Chapligin2, Jian Ren1, Ruediger H Stein1, Hanno Meyer2 and Ralf Tiedemann3, (1)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany, (2)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Potsdam, Potsdam, Germany, (3)Alfred-Wegener-Institute, Bremerhaven, Germany
5:15 PM
Diatom Frustule-Bound δ13c Measurements and Reconstruction of Εp
Heather M Stoll1, Luz Maria Mejia Ramirez1, Ana Mendez-Vicente1, Lorena Abrevaya1, Clara T Bolton1 and Robert F Anderson2, (1)University of Oviedo, Oviedo, Spain, (2)Lamont-Doherty Earth Observatory, Palisades, NY, United States
5:30 PM
Silicon isotopes in sponge spicules: the story of a proxy
Katharine R Hendry, Cardiff University, Cardiff, United Kingdom; University of Bristol, Earth Sciences, Bristol, United Kingdom, Manuel Maldonado, Centro de Estudios Avanzados de Blanes, Department of Marine Ecology, Blanes, Spain, Claire Goodwin, National Museums Northern Ireland, Belfast, United Kingdom, Jade Berman, Ulster Wildlife Trust, Belfast, United Kingdom and Christina L De La Rocha, University of Brest, IUEM, Brest, France
5:45 PM
The Roles of Iron and Vertical Mixing in Regulating Nitrogen and Silicon Cycling in the Southern Ocean over the Last Glacial Cycle
Rebecca S Robinson1, Mark A Brzezinski2, Charlotte Beucher2, Matthew G Horn3 and Patrick Bedsole4, (1)University of Rhode Island, Narragansett, RI, United States, (2)University of California Santa Barbara, Santa Barbara, CA, United States, (3)RPS-ASA, Narragansett, RI, United States, (4)University of Rhode Island, Kingston, RI, United States
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