BN003:
Advances in the marine silicon cycle


Session ID#: 25937

Session Description:
There has been significant advancement in our understanding of the marine silicon (Si) cycle. Many studies have highlighted whether the Si cycle can be considered in steady state, and the potential mechanisms for the “missing silica sink” such as the burial of silica by siliceous sponges and the contribution of reverse weathering in high sedimentation rate continental margins. Rates of Si inputs to the ocean have been revisited through the delivery of reactive amorphous silica or of silicic acid by rivers, subglacial lakes, submarine groundwater discharge, hydrothermal activities, and low temperature basalt dissolution on continental margins and in the deep sea. In parallel, the important roles non-diatom groups (e.g., sponges, Rhizarians, picocyanobacteria) play in biogenic silica production, dissolution, export, and burial have been revisited. However, the rates associated with these recently-studied processes are poorly constrained. This session will address these and other key issues related to the biogeochemical cycling of Si and to the budget of Si at world ocean or regional scales (e.g. high latitudes, coastal systems). Submissions highlighting new insights into the marine Si cycle and/or methodological advancements which will enable new exploration are welcome.
Primary Chair:  Paul J Treguer, University of Western Brittany, Brest, France
Co-chairs:  Jeffrey W Krause, Dauphin Island Sea Lab, Dauphin Island, AL, United States, Shaily Rahman, University of Florida, Geological Sciences, Gainesville, FL, United States and Manuel Maldonado, Center for Advanced Studies of Blanes (CEAB, CSIC), Department of Marine Ecology, Blanes, Spain
Index Terms:

4805 Biogeochemical cycles, processes, and modeling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4825 Geochemistry [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4845 Nutrients and nutrient cycling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4855 Phytoplankton [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
Cross-Topics:
  • HE - High Latitude Environments
  • PC - Past, Present and Future Climate
  • RS - Regional Studies

Abstracts Submitted to this Session:

Holly Welsby1, Katharine R Hendry1, Rupert Perkins2, Marian Yallop1 and Sandra Arndt3, (1)University of Bristol, Bristol, United Kingdom, (2)Cardiff University, Cardiff, United Kingdom, (3)Université Libre de Bruxelles, Brussel, Belgium
Aude Leynaert1, Natalia Llopis Monferrer2, Miguel Mendez Sandin3, Paul Tréguer2 and Fabrice Not4, (1)CNRS, LEMAR IUEM, Plouzané, France, (2)University of Western Brittany, Brest, France, (3)Station Biologique de Roscoff, Roscoff, France, (4)CNRS, Station Biologique, Roscoff, France
Flora Vincent1, Chris Bowler1 and Tara Oceans Consortium2, (1)Ecole Normale Supérieure, Institut de Biologie/Ecology and Evolutionary Biology Section, Paris, France, (2)CNRS, France
Jordan Toullec, University of Western Brittany, Plouzané, France and Brivaëla Moriceau, CNRS, LEMAR, IUEM Institut Universitaire Européen de la Mer, Plouzané, France
Katharine R Hendry1, Lucie Cassarino2, Hong Chin Ng1, James Ward1, Sandra Arndt3 and Christian März4, (1)University of Bristol, Bristol, United Kingdom, (2)University of Bristol, Earth Sciences, Bristol, United Kingdom, (3)Université Libre de Bruxelles, Brussel, Belgium, (4)Millinocket, ME, United States
Manuel Maldonado1, Maria Lopez-Acosta2, Marta Garcia-Puig2, Celia Sitja2 and Gemma Ercilla3, (1)Center for Advanced Studies of Blanes (CEAB, CSIC), Department of Marine Ecology, Blanes, Spain, (2)Center for Advanced Studies of Blanes (CEAB-CSIC), Blanes, Spain, (3)Instituto Ciencias del Mar-CSIC, Barcelona, Spain
Hjálmar Hátún, Faroe Marine Research Institute, Environmentl, Tórshavn, Faroe Islands, Jon Olafsson, Institute of Earth Sciences, University of Iceland, Reykjavik, Iceland, Kumiko Azetsu-Scott, Bedford Inst Oceanography, Dartmouth, NS, Canada, Raquel Somavilla, Instituto Español Oceanografía, Santander, Spain, Uwe Mikolajejewicz, Max Planck Institute for Meteorology, Hamburg, Germany, Pierre Coupel, Takuvik Joint International Laboratory, Département de Biologie and Québec-Océan, QC, Canada, Jean-Eric Tremblay, Laval University, Biologie, Quebec City, QC, Canada, Selma Pacariz, University of Gothenburg, Department of Earth Sciences, Gothenburg, Sweden, Ian Salter, Faroe Marine Research Institute, Tórshavn, Faroe Islands, Francisco Rey, IMR, Norway, Clare Johnson, SAMS, United Kingdom, Moritz Mathis, MPI, Germany and Susan Hartman, NOC, United Kingdom
Paul J Treguer, University of Western Brittany, Brest, France, Brivaëla Moriceau, CNRS, LEMAR, IUEM Institut Universitaire Européen de la Mer, Plouzané, France, Philippe Pondaven, UBO, France and Karine Leblanc, Aix Marseille University, Meditterranean Institute of Oceanography, Marseille Cedex 03, France; Aix Marseille University, Mediterrannean Institute of Oceanography, Marseille, France
Brivaëla Moriceau, CNRS, Laboratoire des sciences de l'environnement Marin LEMAR, Plouzané, France, Morten Iversen, Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany, Morgane Gallinari, IUEM Institut Universitaire Européen de la Mer, LEMAR, Plouzané, France, Jordan Toullec, University of Western Brittany, Plouzané, France and Dorothée Vincent, Université du Littoral Cote d'Opale, Laboratoire d'Océanologie et de Géosciences - UMR 8187 LOG Laboratoire d’Océanologie et de Géosciences, Wimereux, France
Matthew A Charette, Woods Hole Oceanographic Institution, Woods Hole, MA, United States, Joe Tamborski, Stony Brook University, Geosciences, Stony Brook, NY, United States, Shaily Rahman, Stony Brook University, School of Marine and Atmospheric Sciences, Stony Brook, NY, United States and J. Kirk Cochran, Stony Brook University, Stony Brook, NY, United States
Tristan Biard, Scripps Institution of Oceanography, La Jolla, CA, United States, Jeffrey W Krause, Dauphin Island Sea Lab, Dauphin Island, AL, United States, Michael R Stukel, Florida State University, Earth, Ocean and Atmospheric Science, Tallahassee, FL, United States and Mark D Ohman, Scripps Institution of Oceanography, Scripps Institution of Oceanography, UCSD, La Jolla, CA, United States
Ivia Closset1, Mark A Brzezinski2, Damien Cardinal3, Arnaud Dapoigny4, Janice Jones1 and Rebecca S Robinson5, (1)University of California Santa Barbara, Marine Science Institute, Santa Barbara, CA, United States, (2)University of California, Marine Science Institute, Santa Barbara, CA, United States, (3)Universite Pierre et Marie Curie, LOCEAN, Paris, France, (4)LSCE, Gif sur Yvette, France, (5)University of Rhode Island, Narragansett, RI, United States
Ann G Dunlea1, Richard W Murray2, Danielle Priscilla Santiago Ramos3 and John A Higgins3, (1)Woods Hole Oceanographic Institution, Geology and Geophysics, Woods Hole, MA, United States, (2)Boston University, Earth and Environment, Boston, MA, United States, (3)Princeton University, Princeton, NJ, United States
Diana E Varela1, Karina E Giesbrecht2, Gregory F. de Souza3 and Colin Maden3, (1)University of Victoria, Department of Biology & School of Earth and Ocean Sciences, Victoria, BC, Canada, (2)University of Victoria, Victoria, BC, Canada, (3)ETH Zurich, Institute of Geochemistry and Petrology, Zurich, Switzerland
Daniel J Conley1, Patrick Frings1,2, Guillaume Fontorbe1, Wim Clymans1,3, Johanna Stadmark4, K Hendry5, Alan Marron6 and Christina L De La Rocha4, (1)Lund University, Lund, Sweden, (2)GFZ German Research Centre for Geosciences, Germany, (3)Earthwatch Institute, United Kingdom, (4)Lund University, Sweden, (5)University of Bristol, Bristol, United Kingdom, (6)University of Cambridge, United Kingdom
Nicholas Ray1, Alia Al-Haj2, Maya Babu3, Maria Henning4, Victoria Momyer3, Emily Scott3 and Robinson W Fulweiler5, (1)Boston University, Biology, Boston, MA, United States, (2)Boston University, Earth and Environment, MA, United States, (3)Boston University, Department of Earth and Environment, MA, United States, (4)Boston University, Marine Science Program, MA, United States, (5)Boston University, Earth and Environment, Biology, Boston, MA, United States
Per O J Hall1, Nils Ekeroth1, Mikhail Y. Kononets1 and Anders Tengberg1,2, (1)University of Gothenburg, Department of Marine Sciences, Gothenburg, Sweden, (2)Aanderaa Data Instruments, Bergen, Norway
Rebecca A Pickering, University of South Alabama, Marine Sciences, Mobile, AL, United States, Jeffrey W Krause, Dauphin Island Sea Lab, Dauphin Island, AL, United States and Panagiotis Michalopoulos, Hellenic Center for Marine Research, Anavyssos, Greece
Ying Ye1, Anna Pagnone1, Tingting Wang1, Sönke Hohn2, Christoph D Voelker1 and Dieter Wolf-Gladrow1, (1)Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany, (2)Leibniz Centre for Tropical Marine Research, Bremen, Germany
Christoph D Voelker, Alfred Wegener Institute, Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany, Shuang Gao, Bjerknes Center, Bergen, Norway and Dieter Wolf-Gladrow, Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany
Shaily Rahman, Jonathan B Martin, Ellen Eckels Martin and Andrea J. Pain, University of Florida, Geological Sciences, Gainesville, FL, United States
Yi Hou1, Douglas E Hammond1, William Berelson1, Jess F. Adkins2, James William Buchanan Rae2,3, Abby Lunstrum1 and Nathan Kemnitz4, (1)University of Southern California, Los Angeles, CA, United States, (2)California Institute of Technology, Pasadena, CA, United States, (3)University of St Andrews, School of Earth and Environmental Sciences, St Andrews, KY16, United Kingdom, (4)University of Southern California, CA, United States
Jeffrey W Krause, Dauphin Island Sea Lab, Dauphin Island, AL, United States