OB44I:
Structure, Function, and Biogeochemical Role of Plankton Communities in the Nutrient-Limited Open Ocean IV Posters

Session ID#: 93494

Session Description:
The nearly constant nutrient limitation found in ocean gyres and high nutrient low chlorophyll (HNLC) regions yields unique planktonic communities with particular morphological, physiological, and behavioral adaptations. Recent work has demonstrated new and previously unrecognized links in nutrient limited regions between plankton biodiversity and trophic interactions, dissolved nutrients, the cycling of organic matter, and ocean biogeochemical functioning. These efforts include new interdisciplinary field programs (e.g. EXPORTS, BIOS-SCOPE), long-term time series (e.g. BATS, HOT), and new technologies (AUVs, 'omics approaches). This session will examine how adaptations to oligotrophic conditions influence planktonic community structure and function, including mechanisms governing cellular resource requirements and utilization or production of DOM. We invite contributions that include field, laboratory, theoretical and modeling efforts to identify and understand how plankton composition, physiology and metabolism influence food web structure, elemental composition, DOM cycling, energy transfer, and carbon export in nutrient constrained environments. We anticipate a lively session covering a diverse range of organisms (from viruses to zooplankton) and the interactions between them.
Co-Sponsor(s):
  • CT - Chemical Tracers, Organic Matter and Trace Elements
  • ME - Marine Ecology and Biodiversity
  • MM - Microbiology and Molecular Ecology
Index Terms:
Primary Chair:  Tatiana A Rynearson, University of Rhode Island, Graduate School of Oceanography, Narragansett, RI, United States
Co-chairs:  Adam Martiny, University of California Irvine, Earth System Science, Irvine, CA, United States, Bethany D. Jenkins, University of Rhode Island, Cell and Molecular Biology, Narragansett, RI, United States and Robert T Letscher, University of New Hampshire, Earth Sciences, Durham, NH, United States
Primary Liaison:  Tatiana A Rynearson, University of Rhode Island, Graduate School of Oceanography, Narragansett, RI, United States
Moderators:  Adam Martiny, University of California Irvine, Earth System Science, Irvine, CA, United States and Robert T Letscher, University of New Hampshire, Earth Sciences, Durham, NH, United States
Student Paper Review Liaisons:  Robert T Letscher, University of New Hampshire, Earth Sciences, Durham, NH, United States and Adam Martiny, University of California Irvine, Earth System Science, Irvine, CA, United States

Abstracts Submitted to this Session:

 
Cyanophage Host-Derived Genes Reflect Changes in Host Ecotype and Depth in the Water Column (655184)
David Garcia Prieto1, Matthew Hays1, Michael Carlson2 and Clara A Fuchsman1, (1)University of Maryland Center for Environmental Science Horn Point Laboratory, Cambridge, MD, United States, (2)Technion Israel Institute of Technology, Faculty of Biology, Haifa, Israel
 
Determining the Contributions of Microorganisms to H2O2 Degradation and its Implications for the Success of Prochlorococcus in the Oligotrophic Ocean (653984)
Benjamin Carter Calfee, University of Tennessee, Microbiology, Knoxville, TN, United States, David Talmy, The University of Tennessee, Microbiology, Knoxville, TN, United States, Steven Wilhelm, University of Tennessee, Knoxville, TN, United States and Erik Zinser, University of Tennessee, Department of Microbiology, Knoxville, TN, United States
 
Marine Microbial Processes at Interfaces: Cellular to Global Scales and Processes (646812)
Richard B Rivkin, Memorial University of Newfoundland, St John's, NL, Canada
 
SAR11 and Pelagiphage Distribution and Viral Host Gene Analysis Through Metagenomic Depth Profiles in Oligotrophic Ocean Environments (656706)
Matthew Hays and Clara A Fuchsman, University of Maryland Center for Environmental Science Horn Point Laboratory, Cambridge, MD, United States
 
Nuclear and mitochondrial ribosomal ratio as an index of animal growth rate (639483)
Ryuji Machida, Academia Sinica, Biodiversity Research Center, Taipei, Taiwan and Wye-Lup Kong, Biodiversity Research Centre, Academia Sinica, Taiwan