B54A:
Beyond Redfield: Elemental Ratios as Tracers and Drivers of Biodiversity and Biogeochemical Function in a Changing Ocean II Posters


Session ID#: 9583

Session Description:
Microbial life in the ocean contains immense biodiversity, yet its collective activity yields tightly linked, global cycles of key nutrients. Almost 80 years ago, A.C. Redfield discovered that relatively invariant elemental ratios found in marine organisms are intimately entwined with the co-variation of these elements in the ocean.  However, recent studies have demonstrated the potential for both large-scale variation in nutrient uptake ratios as well as the influence of nutrient ratios on plankton biodiversity and ocean biogeochemical functioning.  These findings have broad implications for the ocean’s ‘biological pump’ that links nutrient and carbon cycling and its role in controlling atmospheric CO2 and thereby Earth’s climate.

 

This session will bring together observationalists, experimentalists, theoreticians, and modelers from a range of disciplines to understand (1) how biogeochemical stoichiometry can be used to understand the coupling of major elemental cycles, (2) the mechanisms leading to different ratios of nutrients in ocean water or plankton, or (3) the influence of elemental ratios on plankton physiology, biodiversity, and distribution. We invite studies that utilize novel field, culture, theory, and/or modeling approaches to address these questions with the goal of achieving a new synthesis regarding biogeochemical stoichiometry in the ocean and its application to key questions.

Primary Chair:  Mark A Altabet, University of Massachusetts Dartmouth, New Bedford, MA, United States
Chairs:  James J Elser, Arizona State University, School of Life Sciences, Tempe, AZ, United States, Adam Martiny, University of California, Irvine, Earth System Science, Irvine, CA, United States and Curtis A Deutsch, University of Washington Seattle Campus, School of Oceanography, Seattle, WA, United States
Moderators:  Adam Martiny, University of California, Irvine, Earth System Science, Irvine, CA, United States and James J Elser, Arizona State University, School of Life Sciences, Tempe, AZ, United States
Student Paper Review Liaisons:  Mark A Altabet, Univ Massachusetts Darmouth, New Bedford, MA, United States and Adam Martiny, University of California, Irvine, Earth System Science, Irvine, CA, United States
Index Terms:

1615 Biogeochemical cycles, processes, and modeling [GLOBAL CHANGE]
1635 Oceans [GLOBAL CHANGE]
4845 Nutrients and nutrient cycling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4855 Phytoplankton [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
Co-Sponsor(s):
  • CT - Chemical Tracers, DOM and Trace Metals
  • ME - Marine Ecosystems
  • MM - Microbiology and Molecular Biology
  • PP - Phytoplankton and Primary Production

Abstracts Submitted to this Session:

 
Effect of Nitrogen Form and N:P Ratio on Phytoplankton Bloom Formation in Florida Bay, USA: A Mesocosm Study (89860)
Yini Shangguan1, Patricia M Glibert1, Jeff Alexander1, Sue Murasko2 and Christopher J Madden3, (1)University of Maryland Center for Environmental Science, Horn Point Laboratory, Cambridge, MD, United States, (2)Florida Fish and Wildlife Conservation Commission, Fish and Wildlife Research Institute, St. Petersburg, FL, United States, (3)South Florida Water Management District, West Palm Beach, FL, United States
 
Nitrogen Form Impacting Phytoplankton Across Scales in China’s West Lake: from Nitrogen-metabolism to Community Composition (89599)
Melanie Leigh Jackson1, Jingjing Yang2, Youmai Li2, Mengmeng Tong2 and Patricia M Glibert3, (1)University of Maryland Center for Environmental Science Horn Point Laboratory, Cambridge, MD, United States, (2)Zhejiang University, Ocean College, China, (3)University of Maryland Center for Environmental Science, Horn Point Laboratory, Cambridge, MD, United States
 
Relationship between N:P ratios and phytoplankton biomass given by Chlorophyll-a concentration in coastal and estuarine waters of South Florida (93000)
Henry Briceno1, Joseph N Boyer2 and Alexandra Serna1, (1)Florida International University, Southeast Environmental Research Center, Miami, FL, United States, (2)Plymouth State University, Plymouth, NH, United States
 
Mechanisms Influencing the Stoichiometry of Phytoplankton Carbon to Phosphorus Uptake in a Shelf Sea from Spring to Fall (91121)
Alex J Poulton, National Oceanography Centre, Southampton, United Kingdom, Chris James Daniels, National Oceanography Centre, OBE, Southampton, United Kingdom, Kyle Mayers, University of Southampton, Ocean & Earth Sciences, Southampton, United Kingdom, Carolyn Harris, Plymouth Marine Laboratory, Plymouth, United Kingdom and Malcolm S Woodward, Plymouth Marine Laboratory, Plymouth, PL1, United Kingdom
 
Iron Uptake in a Shelf Sea: Seasonality and Stoichiometry (91033)
Chris James Daniels1, Alex J Poulton1,2, Mark M Moore3, Antony Birchill4, Kyle Mayers5 and Maeve Carroll Lohan4, (1)National Oceanography Centre, OBE, Southampton, United Kingdom, (2)National Oceanography Centre, Southampton, United Kingdom, (3)University of Southampton, Ocean and Earth Science, Southampton, United Kingdom, (4)University of Plymouth, Plymouth, United Kingdom, (5)University of Southampton, Ocean & Earth Sciences, Southampton, United Kingdom
 
Morphological Dependence of Element Stoichiometry in the H. americanus Exoskeleton (92564)
Robert Nguyen Ulrich, Virginia Tech, Departmen of Geosciences, Blacksburg, VA, United States, Sebastian Tobias Mergelsberg, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States and Patricia M Dove, Virginia Tech, Geosciences, Blacksburg, VA, United States
 
Beyond the Blue: C:N:P relationships across tidal and seasonal time-scales within a salt-marsh estuary (92481)
Doug Bell1, Susan Denham2,3, Erik Tyler Smith2,3, Michelle Sutton4, Claudia R Benitez-Nelson1,5 and Tammi L Richardson1,6, (1)University of South Carolina, Marine Science Program, Columbia, SC, United States, (2)Belle W. Baruch Institute for Marine and Coastal Sciences, Georgetown, SC, United States, (3)North-Inlet Winyah Bay National Estuarine Research Reserve, Georgetown, SC, United States, (4)Morris College, Sumter, SC, United States, (5)University of South Carolina, Department of Earth and Ocean Sciences, Columbia, SC, United States, (6)University of South Carolina, Department of Biological Sciences, Columbia, SC, United States
 
Variability in Phytoplankton Morphology and Macromolecular Composition With Nutrient Starvation and The Implications for Oceanic Elemental Stoichiometry (92444)
Justin David Liefer1, Ina Benner2, Christopher Malcolm Brown3, Aneri Garg2, Catherine Fiset2, Andrew J Irwin4, Michael J Follows5 and Zoe Finkel6, (1)Mount Allison University, Geography and Environment, SACKVILLE, NB, Canada, (2)Mount Allison University, Geography and Environment, Sackville, NB, Canada, (3)University of the Pacific, Stockton, CA, United States, (4)Mount Allison University, Sackville, NB, Canada, (5)Massachusetts Inst Tech, Cambridge, MA, United States, (6)Environmental Science Program, NB, Canada