BN34A:
Advances in the Marine Silicon Cycle III Posters


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
Moderators:  Manuel Maldonado, Center for Advanced Studies of Blanes (CEAB, CSIC), Department of Marine Ecology, Blanes, Spain and Shaily Rahman, University of Florida, Geological Sciences, Gainesville, FL, United States
Student Paper Review Liaison:  Jeffrey W Krause, University of South Alabama, Department of Marine Sciences, Mobile, AL, United States
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
Jordan Toullec, University of Western Brittany, Plouzané, France and Brivaëla Moriceau, CNRS, LEMAR, IUEM Institut Universitaire Européen de la Mer, Plouzané, France
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, UC San Diego, La Jolla, CA, United States
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, Boston, 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