MM41A:
The Dawn of BioGEOTRACES: Metal-Microbe Interactions in the Ocean I


Session ID#: 37400

Session Description:
Trace metals are essential for life, catalysing key cellular reactions which then govern patterns of ocean fertility and biodiversity. Fundamental in this regard are the ways in which ocean microbes acquire essential metals and how biological activity is affected by metal availability. Developments in this field are being led by advances in analytical chemistry, nanotechnology, molecular biology, and bioinformatics, as well as the expansion of 'omics'-related observations of in-situ microbial communities, and the advent of new high resolution geochemical data from the international GEOTRACES program. It is now timely to bring together insights from these different disciplines, spanning observation and modelling approaches to better understand how microbial activity, diversity and ecology is shaped by interactions with trace metals over different space and time scales. By linking across disciplines, there is the potential to develop the mechanistic understanding required to inform the ecological and biogeochemical models we rely on for testing hypotheses and projecting the impacts of ocean change. We are specifically interested in contributions that address (i) metal uptake and competition between microbes for metal resources, (ii) how microbes adapt their physiology to metal scarcity and varied supply and (iii) how trace metals shape cellular function and evolution.
Primary Chair:  Adrian Marchetti, University of North Carolina, at Chapel Hill, Department of Marine Sciences, Chapel Hill, NC, United States
Co-chairs:  Maria Teresa Maldonado, University of British Columbia, Department of Earth, Ocean and Atmospheric Sciences, Vancouver, BC, Canada, Yeala Shaked, Hebrew University, Interuniversity Institute for Marine Sciences,, Eilat, Israel and Alessandro Tagliabue, University of Liverpool, Liverpool, United Kingdom
Moderators:  Adrian Marchetti, University of North Carolina at Chapel Hill, Marine Sciences, Chapel Hill, NC, United States and Maria Teresa Maldonado, University of British Columbia, Department of Earth, Ocean and Atmospheric Sciences, Vancouver, BC, Canada
Student Paper Review Liaison:  Yeala Shaked, Hebrew University, Interuniversity Institute for Marine Sciences,, Eilat, Israel
Index Terms:

4805 Biogeochemical cycles, processes, and modeling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4840 Microbiology and microbial ecology [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4855 Phytoplankton [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4875 Trace elements [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
Cross-Topics:
  • B - Biodiversity
  • BN - Biogeochemistry and Nutrients
  • CT - Chemical Tracers, Organic Matter and Trace Elements
  • OM - Ocean Modeling

Abstracts Submitted to this Session:

Community-level response to natural perturbations of iron in open ocean planktonic ecosystems (304743)
Chris Bowler, Institut de Biologie de l’Ecole Normale Supérieure (IBENS), Ecology and Evolutionary Biology, Paris, France, Daniele Iudicone, Stazione Zoologica Anton Dohrn, Naples, Italy, Alessandro Tagliabue, University of Liverpool, Earth, Ocean and Ecological Sciences, Liverpool, United Kingdom, Maurizio Ribera, Stazione Zoologica Anton Dohrn, Napoli, Italy, Patrick Wincker, CEA–Institut de Génomique, GENOSCOPE, Evry, France, France and Tara Oceans Consortium, CNRS, France
Probing and quantifying the bioavailability of oceanic dissolved iron through phytoplankton uptake kinetics (310522)
Yeala Shaked1, Kristen N Buck2, Travis Mellett2, Alessandro Tagliabue3 and Maria Teresa Maldonado4, (1)Hebrew University, Interuniversity Institute for Marine Sciences,, Eilat, Israel, (2)University of South Florida, College of Marine Science, St. Petersburg, FL, United States, (3)University of Liverpool, Earth, Ocean and Ecological Sciences, Liverpool, United Kingdom, (4)University of British Columbia, Vancouver, BC, Canada
Iron Bioavailability in High-CO2 Oceans: New Perspectives on Iron Acquisition Mechanisms in Diatoms (322333)
Andrew E Allen, University of California, San Diego / J Craig Venter Institute, Scripps Institution of Oceanography, La Jolla, CA, United States, Jeff McQuaid, J. Craig Venter Institute, La Jolla, CA, United States, Adam Kustka, Rutgers University, Piscataway, NJ, United States, Tyler Coale, Scripps Institution of Oceanography, La Jolla, CA, United States, Erin Marie Bertrand, Dalhousie University, Halifax, NS, Canada and David A Hutchins, University of Southern California, Los Angeles, CA, United States
Different iron storage strategies among bloom-forming diatoms (302218)
Robert H Lampe1, Elizabeth Mann2, Natalie Cohen3, Claire P. Till4, Kimberlee Thamatrakoln5, Fedor I Kuzminov5, Mark A Brzezinski6, Kenneth W Bruland7, Benjamin S Twining2 and Adrian Marchetti3, (1)Scripps Institution of Oceanography, La Jolla, CA, United States, (2)Bigelow Lab for Ocean Sciences, East Boothbay, ME, United States, (3)University of North Carolina at Chapel Hill, Marine Sciences, Chapel Hill, NC, United States, (4)Humboldt State University, Chemistry, Arcata, CA, United States, (5)Rutgers University, New Brunswick, NJ, United States, (6)University of California, Marine Science Institute, Santa Barbara, CA, United States, (7)University of California Santa Cruz, Santa Cruz, CA, United States
Molecular drivers behind increased Si:N uptake in an iron stressed diatom assemblage (321272)
Michael A. Maniscalco1, Heather Mcnair1, Robert H Lampe2, Natalie Cohen3, Kelsey Ellis4, Adrian Marchetti3, Benjamin S Twining5, Claire P. Till6, Matthew Brown7, Tyler Coale2, Kenneth W Bruland8, Mark A Brzezinski9 and Kimberlee Thamatrakoln10, (1)University of California Santa Barbara, Ecology Evolution and Marine Biology, Santa Barbara, CA, United States, (2)Scripps Institution of Oceanography, La Jolla, CA, United States, (3)University of North Carolina at Chapel Hill, Marine Sciences, Chapel Hill, NC, United States, (4)University of North Carolina at Chapel Hill, Marine Sciences, (5)Bigelow Lab for Ocean Sciences, East Boothbay, ME, United States, (6)Humboldt State University, Chemistry, Arcata, CA, United States, (7)Flagler College, Natural Sciences, St Augustine, FL, United States, (8)University of California Santa Cruz, Santa Cruz, CA, United States, (9)University of California, Marine Science Institute, Santa Barbara, CA, United States, (10)Rutgers University, New Brunswick, NJ, United States
New insights into controls on cobalamin and iron use in marine diatoms (325609)
Erin Marie Bertrand and Kira More, Dalhousie University, Halifax, NS, Canada
Both dissolved iron and coastal water additions to Southern Drake Passage waters stimulate similar growth responses and shifts in diatom community compositio (309411)
Dreux Chappell1, Kristen N Buck2, Zuzanna M Abdala3, Shannon Burns2, Kimberly Powell4, Alexa Sterling5 and Bethany D. Jenkins6, (1)Old Dominion University, Ocean, Earth and Atmospheric Sciences, Norfolk, VA, United States, (2)University of South Florida, College of Marine Science, St. Petersburg, FL, United States, (3)Old Dominion University, Ocean, Earth, and Atmospheric Sciences, Norfolk, VA, United States, (4)Old Dominion University, VA, United States, (5)University of Rhode Island, Biological and Environmental Sciences, Kingston, RI, United States, (6)University of Rhode Island, Cell and Molecular Biology and Graduate School of Oceanography, Narragansett, RI, United States
Iron limitation of Southern Ocean diatoms influences the oceanic cycling of zinc (305050)
Michael Joseph Ellwood1, Robin Grün2, Moneesha Samanta2 and Alessandro Tagliabue3, (1)Australian National University, Research School of Earth Sciences, Canberra, ACT, Australia, (2)Australian National University, Research School of Earth Sciences, Canberra, Australia, (3)University of Liverpool, Earth, Ocean and Ecological Sciences, Liverpool, United Kingdom

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