OB34G:
Structure, Function, and Biogeochemical Role of Plankton Communities in the Nutrient-Limited Open Ocean III Posters

Session ID#: 85869

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
  • MM - Microbiology and Molecular Ecology
  • NC - Nutrient Cycling
  • NC - Nutrient Cycling
Index Terms:

4805 Biogeochemical cycles, processes, and modeling [OCEANOGRAPHY: CHEMICAL]
4815 Ecosystems, structure, dynamics, and modeling [OCEANOGRAPHY: BIOLOGICAL]
4817 Food webs, structure, and dynamics [OCEANOGRAPHY: BIOLOGICAL]
4845 Nutrients and nutrient cycling [OCEANOGRAPHY: CHEMICAL]
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, Kingston, RI, United States and Robert T Letscher, University of New Hampshire, Earth Sciences, Durham, United States
Primary Liaison:  Tatiana A Rynearson, University of Rhode Island, Graduate School of Oceanography, Narragansett, RI, United States
Moderators:  Tatiana A Rynearson, University of Rhode Island, Graduate School of Oceanography, Narragansett, RI, United States and Bethany D. Jenkins, University of Rhode Island, Cell and Molecular Biology, Kingston, RI, United States
Student Paper Review Liaison:  Bethany D. Jenkins, University of Rhode Island, Cell and Molecular Biology, Kingston, RI, United States

Abstracts Submitted to this Session:

 
OB34G-0635
Come Rain or Shine: Depth, Not Season, Shapes Protistan Community Structure in the NPSG (646746)
Gerid Ollison, University of Southern California, Los Angeles, CA, United States and David A Caron, University of Southern California, Biological Sciences, Los Angeles, CA, United States
 
OB34G-0636
Comparing the Bioavailability of a Natural and Synthetic Iron Source: Do Past Experiments Accurately Model Diatom Growth in Response to Episodic Iron Addition? (654113)
Clayton Mazur, Shannon Point Marine Ctr, Anacortes, WA, United States, Suzanne Strom, Shannon Point Marine Ctr, Anacortes, United States and Ana Aguilar-Islas, University of Alaska Fairbanks, College of Fisheries and Ocean Sciences, Fairbanks, United States
 
OB34G-0638
From nutrient deplete to replete: phytoplankton community composition from the oligotrophic open ocean to eutrophic coastal waters (652148)
Samantha Setta, MS, Phd1, Bethany D. Jenkins1, Sonya Dyhrman2 and Tatiana A Rynearson1, (1)University of Rhode Island, Graduate School of Oceanography, Narragansett, RI, United States, (2)Columbia University, Lamont-Doherty Earth Observatory, Palisades, NY, United States
 
OB34G-0639
Nutrient Limitation Induce Photoinhibition in a Planktonic Diatom Skeletonema costatum (636968)
Ryoko Yano1, Shizuka Ohara2 and Kazuhiko Koike1, (1)Hiroshima University, Graduate School of Integrated Sciences for Life, Higashi-Hiroshima, Japan, (2)Hiroshima University, Graduate School of Biosphere Science, Higashi-hiroshima, Japan
 
OB34G-0640
Determining Fe-limited remodeling of chloroplasts in the Subarctic Pacific through “Meta-Plastid” Analyses (646852)
Kristofer M Gomes1, Sarah Lerch2, Kristen N Buck3, Mark A Brzezinski4 and Bethany D. Jenkins1, (1)University of Rhode Island, Cell and Molecular Biology, Kingston, RI, United States, (2)University of Rhode Island, Kingston, RI, United States, (3)Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR, United States, (4)University of California, Marine Science Institute, Santa Barbara, CA, United States
 
OB34G-0642
Light Sensing in Open Ocean Eukaryotic Plankton (653990)
Sacha Coesel1, Ryan D Groussman1, Bryndan Paige Durham2, Rhonda Morales3, Francois Ribalet3 and E. Virginia Armbrust1, (1)University of Washington, School of Oceanography, Seattle, United States, (2)University of Florida, Department of Biology & Genetics Institute, Gainesville, United States, (3)University of Washington, School of Oceanography, Seattle, WA, United States
 
OB34G-0643
Phytoplankton Community Composition and Taxon-Specific Growth and Microzooplankton Grazing Rates in Subantarctic HNLC Waters Under Contrasting Mixing and Iron Limiting Conditions (649645)
Andres Gutierrez-Rodriguez1, Mikel Latasa2, Antonia Cristi-Martínez3, Priscillia Gourvil4, Karl Safi5, Dominique Marie4, Adriana Lopes dos Santos6, Daniel Vaulot4 and Scott D Nodder7, (1)National Institute of Water and Atmospheric Research, New Zealand, Marine Biogeochemistry, Wellington, New Zealand, (2)Instituto Español de Oceanografía, Gijon, Spain, (3)Universidad Catolica de la Santisima Concepcion, Concepci�n, Chile, (4)Station Biologique de Roscoff, Roscoff, France, (5)National Institute of Water and Atmospheric Research, Hamilton, New Zealand, (6)Nanyang Technological University, Singapore, Singapore, (7)National Institute of Water and Atmospheric Research (NIWA), Marine Biogeochemistry, Wellington, New Zealand
 
OB34G-0644
Quantifying microzooplankton communities along open ocean salinity gradients (656784)
Sebastian Grimm, Bard College, Center for Environmental Policy, Annandale-On-Hudson, NY, United States, Marco Spodek, Bard College, Center for the Study of Land, Air, and Water, Annandale-On-Hudson, NY, United States, Andrew R Juhl, Lamont-Doherty Earth Observatory, Columbia University, Division of Biology and Paleo Environment, Palisades, NY, United States, Ajit Subramaniam, Columbia University, Lamont-Doherty Earth Observatory, Palisades, United States and M. Elias Dueker, Bard College Center for the Study of Land, Air, and Water, Environmental and Urban Studies, Biology, Annandale-on-Hudson, NY, United States
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