CT24D:
The Role of Micronutrient Cycles in Global-Scale Dynamics II Posters

Session ID#: 85400

Session Description:
Via their fundamental control on ocean productivity and the biological carbon pump, the cycling of nutrients plays an integral role in the dynamics of atmospheric CO2 and climate. In contrast to the ‘big three’- nitrogen, phosphorus and silicon, with their well characterised modern distributions and relatively stable inventories, micronutrients, such as iron, remain relatively poorly observed and have the potential for rapid and profound changes in their inventories and biological availability in response to a host of poorly constrained processes. Micronutrients are currently the ‘wild card’ in both past and future carbon cycle and climate change, prompting the need for improved understanding of their role in Earth system dynamics. We invite a broad range of submissions to provide insights into the pieces of the puzzle, addressing boundary inputs and sinks, exchanges between dissolved and solid phases, interactions with organic compounds, and their reciprocal interactions with microbial ecosystems. Submissions may include observations, data synthesis or models, and may address ocean nutrient cycling over a range of time-scales, from past (paleo) through contemporary, and/or in response to future global change. We particularly encourage new insights into the role of feedbacks and the role micronutrient cycles play in shaping global-scale dynamics.
Co-Sponsor(s):
  • CT - Chemical Tracers, Organic Matter and Trace Elements
  • MG - Marine Geology and Sedimentology
  • PC - Past, Present and Future Climate
Index Terms:

4845 Nutrients and nutrient cycling [OCEANOGRAPHY: CHEMICAL]
4875 Trace elements [OCEANOGRAPHY: CHEMICAL]
4912 Biogeochemical cycles, processes, and modeling [PALEOCEANOGRAPHY]
Primary Chair:  Andy Ridgwell, University of California Riverside, Department of Earth and Planetary Sciences, Riverside, CA, United States
Co-Chair:  Alessandro Tagliabue, University of Liverpool, Liverpool, United Kingdom
Primary Liaison:  Andy Ridgwell, University of California Riverside, Department of Earth and Planetary Sciences, Riverside, CA, United States

Abstracts Submitted to this Session:

 
A Purification Method for Nickel from Seawater for Isotope Analysis (645199)
Tione Grant, United States, Brent A Summers, University of South Florida, College of Marine Science, St Petersburg, United States, Matthias Sieber, ETH Swiss Federal Institute of Technology Zurich, Earth Sciences, Zurich, Switzerland; University of South Florida St. Petersburg, College of Marine Science, St Petersburg, FL, United States and Tim M Conway, University of South Florida, St. Petersburg, FL, United States
 
Hydrothermal venting as a globally relevant source of zinc to the oceans. (650203)
Neil John Wyatt1, Alastair J.M. Lough1, Joseph A Resing2, Maeve C Lohan1 and Alessandro Tagliabue3, (1)University of Southampton, Ocean and Earth Sciences, National Oceanography Centre, Southampton, United Kingdom, (2)University of Washington Seattle Campus, Seattle, WA, United States, (3)University of Liverpool, Earth, Ocean and Ecological Sciences, Liverpool, L69, United Kingdom
 
Impact of Inorganic Particles of Sedimentary Origin on Global Dissolved Iron and Phytoplankton Distribution. (652216)
Thomas Gorgues, IRD, Laboratory for Ocean Physics and Satellite remote sensing, Plouzane, France, Houda Beghoura, University of Western Brittany, LOPS, Brest, France, Olivier Aumont, IPSL, Laboratoire d’Oceanographie et de Climatologie: Experimentation et Approches Numeriques, Paris, France, Hélène Planquette, IUEM Institut Universitaire Européen de la Mer, LEMAR, CNRS, Plouzané, France, Alessandro Tagliabue, University of Liverpool, Liverpool, United Kingdom and Pierre-Amaël Auger, Instituto Milenio de Oceanografia (IMO), Escuela de Ciencias del Mar, Pontificia Universidad Catolica de Valparaiso, Valparaiso, Chile
 
Insight into contributions of different iron sources to the ocean from a model of the stable isotopes of iron (650231)
Ying Ye1, Christoph D Voelker1, Md Razib Vhuiyan1 and Michael Staubwasser2, (1)Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany, (2)University of Cologne, Cologne, Germany
 
Southern Ocean Time Series Dissolved and Particulate Zinc Seasonal Stable Isotope Cycling from March 2018 to March 2019. (649875)
Robin Grün1, Pamela M Barrett2 and Michael Joseph Ellwood1, (1)Australian National University, Research School of Earth Sciences, Canberra, ACT, Australia, (2)The Australian National University, Research School of Earth Sciences, Canberra, ACT, Australia
 
Spatial and Temporal Distribution of Bioactive Trace-metals in the North Pacific: MESO-SCOPE, Gradients, and GP15 (653892)
Prof Seth John1, Paulina Pinedo-Gonzalez2, Nicholas Hawco3, Ruifeng Zhang4, Emily Seelen3, Rachel Lauren Kelly3, Shun-Chung Yang5, Xiaopeng Bian1, Jessica N Fitzsimmons6, Nathan Timothy Lanning7, Tim M Conway8 and Matthias Sieber9, (1)University of Southern California, Department of Earth Sciences, Los Angeles, CA, United States, (2)Lamont -Doherty Earth Observatory, Geochemistry, Palisades, NY, United States, (3)University of Southern California, Earth Sciences, Los Angeles, CA, United States, (4)Shanghai Jiao Tong University, China, (5)Academia Sinica, Research Center for Environmental Changes, Taipei, Taiwan, (6)Texas A&M University, Oceanography, College Station, TX, United States, (7)Texas A&M University College Station, College Station, TX, United States, (8)University of South Florida, College of Marine Science, St. Petersburg, United States, (9)ETH Swiss Federal Institute of Technology Zurich, Earth Sciences, Zurich, Switzerland
 
The effect of cell size on cellular Cd and Cd-Zn-CO2 co-limitation of growth rate in coastal diatoms (644692)
Weiying Li1, William G Sunda2, Wenfang Lin1, Haizheng Hong1 and Dalin Shi1, (1)Xiamen University, State Key Laboratory of Marine Environmental Science, Xiamen, China, (2)University of North Carolina, Marine Sciences, Chapel Hill, NC, United States
 
The Effect of Cosmic Dust on Southern Ocean Biogeochemistry is Small but Non-Negligible (645770)
Christoph D Voelker, Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany, John M C Plane, University of Leeds, Leeds, LS2, United Kingdom, Sandip Dhomse, University of Leeds, School of Earth and Environment, Leeds, LS2, United Kingdom, J F Lamarque, NCAR, Boulder, CO, United States, Matthew C Long, National Center for Atm Res, Boulder, CO, United States, Alfonso Saiz-Lopez, Institute of Physical Chemistry Rocasolano, CSIC, Madrid, Spain and Alessandro Tagliabue, University of Liverpool, Liverpool, United Kingdom
 
Whither the extended Redfield Ratio? Decoupling of cellular, particulate, and dissolved micronutrient trace metal stoichiometries across the global ocean (656783)
Gabriella Hee-Eun Kim, Colby College, Government & Environmental Science, Waterville, ME, United States, Alessandro Tagliabue, University of Liverpool, Earth, Ocean and Ecological Sciences, Liverpool, L69, United Kingdom and Benjamin S Twining, Bigelow Lab for Ocean Sciences, East Boothbay, ME, United States