HE44D:
Variability in Southern Ocean Productivity over Different Timescales I Posters
Session ID#: 9290
Session Description:
Southern Ocean productivity plays an important role in regulating marine resources, ocean biogeochemistry and the global carbon cycle. Canonically, variations in iron supply and demand are thought to regulate the variations in phytoplankton productivity. However, via the actions of ocean physics, the Southern Ocean also encounters substantial fluctuations across space and time in temperature, sea ice and glacial ice dynamics and the availability of light and/or macro- and micro-nutrients. How these regulatory factors act individually and in combination to shape the dynamics of biological activity across food webs in different Southern Ocean regions and different timescales is not well understood. This hampers our ability to project with confidence how future environmental change will affect this important ecosystem. In particular we lack an understanding of how variations in the physical and/or biogeochemical environment are underpinned and connected to the broader picture of ecosystem structure, as well as wider biogeochemical feedbacks. We invite presentations from field, laboratory, remote sensing, modelling and paleo studies that seek to unravel the dynamics of the Southern Ocean marine ecosystem from a seasonal or decadal or millenial scale viewpoint. Efforts to combine insights across disciplines and scales from physics to biogeochemistry to ecosystems are actively encouraged.
Primary Chair: Alessandro Tagliabue, University of Liverpool, Earth, Ocean and Ecological Sciences, Liverpool, L69, United Kingdom
Chairs: Philip W Boyd, IMAS, ACE-CRC, University of Tasmania, Hobart, Australia, Eugene W Domack, University of South Florida St. Petersburg, College of Marine Science, St Petersburg, FL, United States and Amy Leventer, Colgate University, Geology, Hamilton, NY, United States
Moderators: Alessandro Tagliabue, University of Liverpool, Earth, Ocean and Ecological Sciences, Liverpool, L69, United Kingdom, Philip W Boyd, IMAS, ACE-CRC, University of Tasmania, Hobart, Australia, Eugene W Domack, University of South Florida St. Petersburg, College of Marine Science, St Petersburg, FL, United States and Amy Leventer, Colgate University, Geology, Hamilton, NY, United States
Student Paper Review Liaison: Amy Leventer, Colgate University, Geology, Hamilton, NY, United States
Co-Sponsor(s):
Abstracts Submitted to this Session:
Spatio-temporal Variability of Coupling between Ice Retreat and Phytoplankton Blooms in the Southern Ocean (92207)
Yun Li, Woods Hole Oceanographic Institution, Biology, Woods Hole, MA, United States; Unversity of South Florida, College of Marine Science, St.Petersburg, FL, United States, Rubao Ji, Woods Hole Oceanographic Inst., Woods Hole, MA, United States, Stephanie Jenouvrier, Woods Hole Oceanographic Institution, Woods Hole, MA, United States, Meibing Jin, University of Alaska Fairbanks, Fairbanks, AK, United States, Julienne Christine Stroeve, University of Colorado at Boulder, Boulder, CO, United States, G Garrett Campbell, National Snow and Ice Data Center, Boulder, CO, United States, Heather Lynch, Stony Brook University, Stony Brook, NY, United States and Marika M Holland, National Center for Atmospheric Research, Boulder, CO, United States
A Latitudinally-Banded Phytoplankton Response to 21
st Century Climate Change in the Southern Ocean across the CMIP5 Model Suite (92736)
Shirley Leung, University of Washington Seattle Campus, Seattle, WA, United States, Anna Cabre, Instituto de Ciencias del Mar, Barcelona, Spain and Irina Marinov, University of Pennsylvania, Department of Earth and Environmental Sciences, Philadelphia, PA, United States
Limiting iron concentrations early in the season off the West Antarctic Peninsula (89135)
Rob Middag1, Anne-Carlijn Alderkamp2, Kevin R Arrigo2 and Robert Van Hale3, (1)Royal Netherlands Institute for Sea Research, Den Burg, Netherlands, (2)Stanford University, Earth System Science, Stanford, CA, United States, (3)University of Otago, Dunedin, New Zealand
The effect of sea-ice dynamics on Net Community Production (NCP) at the western Antarctic Peninsula (WAP) region (93287)
Zuchuan Li1, Nicolas Cassar1, Kuan Huang2, Hugh W Ducklow3 and Oscar Schofield4, (1)Duke University, Earth and Ocean Sciences, Nicholas School of the Environment, Durham, NC, United States, (2)Picarro, Inc., Santa Clara, CA, United States, (3)Lamont-Doherty Earth Observatory, Columbia University, Division of Biology & Paleo Environment, Palisades, NY, United States, (4)Rutgers University, Department of Marine and Coastal Sciences, New Brunswick, NJ, United States
High Winds and the Vertical Structure of Chl-a in the Southern Ocean: Insights from Remote Sensing and Novel
in situ Sensors (91562)
Magdalena M Carranza, Scripps Institution of Oceanography, La Jolla, CA, United States, Sarah T Gille, UCSD, La Jolla, CA, United States, Peter J. S. Franks, University of California San Diego, Scripps Institution of Oceanography, La Jolla, CA, United States, Kenneth S Johnson, Monterey Bay Aquarium Research Institute, Moss Landing, CA, United States and James B Girton, University of Washington, Applied Physics Laboratory, Seattle, WA, United States
Friend or Foe: Variability in How Sea Ice Can Both Hinder and Enhance Phytoplankton Blooms Across the Southern Ocean (92620)
Tyler Rohr, Woods Hole Oceanographic Institution, Marine Chemistry and Geochemistry, Woods Hole, MA, United States; Massachusetts Institute of Technology, Earth and Planetary Sciences, Cambridge, MA, United States
The 3D Distribution of Dissolved and Colloidal Fe, Mn, Zn, Cu, Ni, Cd and Pb in the Western Antarctic Peninsula Shelf Region; Implications for Natural Fe Fertilization (93835)
Robert M Sherrell, Rutgers University, Marine and Coastal Sciences and Earth and Planetary Sciences, New Brunswick, NJ, United States, Jessica N Fitzsimmons, Texas A & M University, Department of Oceanography, College Station, TX, United States, Joe Roccanova, Rutgers University New Brunswick, New Brunswick, NJ, United States, Oscar Schofield, Rutgers University, Department of Marine and Coastal Sciences, New Brunswick, NJ, United States and Michael Paul Meredith, NERC British Antarctic Survey, Cambridge, United Kingdom
A MISSING LINK? -- MESOSCALE DISTRIBUTIONS OF COLONIAL
PHAEOCYSTIS ANTARCTICA AND ITS GHOST COLONIES IN THE ROSS SEA (88719)
Walker O Smith Jr1, Dennis Joseph McGillicuddy Jr2, Elise Olson2, Heidi M Sosik2 and Emily Peacock2, (1)Virginia Inst Marine Sciences, Gloucester Point, VA, United States, (2)Woods Hole Oceanographic Institution, Woods Hole, MA, United States
Comparison of Euphausia superba, Euphausia crystallorophias, Pleuragramma antarcticum and Environmental Distributions in the Western Ross Sea (91909)
Linnea Brynn Davis1, Eileen E Hofmann1, John Michael Klinck II2, Michael S Dinniman1 and Maria Andrea Pinones3, (1)Old Dominion University, Center for Coastal Physical Oceanography, Norfolk, VA, United States, (2)Old Dominion University, Norfolk, VA, United States, (3)Centro de Estudios Avanzados en Zonas Aridas, Coquimbo, Chile
Environmental Drivers of Biogeochemical Variability in the Southern Ross Sea: Results from a 1D Modeling Study (89783)
Daniel Edward Kaufman1, Marjorie A. M. Friedrichs1, Walker O Smith Jr1, Eileen E Hofmann2 and John C P Hemmings3,4, (1)Virginia Institute of Marine Science, Gloucester Point, VA, United States, (2)Old Dominion University, Center for Coastal Physical Oceanography, Norfolk, VA, United States, (3)Met Office, Exeter, Devon, United Kingdom, (4)Wessex Environmental Associates, Salisbury, United Kingdom
Phenology of the McMurdo Sound Spring Bloom (90189)
Kendra L Daly1, Stacy Kim2, Heather Broadbent1, Ben Saenz1, David G Ainley3, Grant Ballard4, Robert Pitman5 and Giacomo R DiTullio6, (1)University of South Florida, College of Marine Science, St. Petersburg, FL, United States, (2)Moss Landing Marine Lab, Moss Landing, CA, United States, (3)H.T. Harvey & Associates Ecological Consultants, United States, (4)Point Blue Conservation Science, Petaluma, CA, United States, (5)NOAA, Southwest Fisheries Science Center, San Diego, CA, United States, (6)College of Charleston, Department of Biology, Charleston, SC, United States
Reconstructing Export Production in the Subantarctic South Pacific during the Last Ice Age (90036)
Ji Woon Park1, Gisela Winckler2,3, Robert F Anderson1,4, Roseanne Schwartz4, Frank Lamy5, Rainer Gersonde6 and Katharina Pahnke7, (1)Columbia University of New York, Earth and Environmental Sciences, Palisades, NY, United States, (2)Lamont Doherty Earth Observatory, Palisades, NY, United States, (3)Columbia University of New York, Earth and Environmental Sciences, New York, NY, United States, (4)Lamont -Doherty Earth Observatory, Palisades, NY, United States, (5)Alfred Wegener Institute, Helmholtz Center for Polar and Marine Research (AWI), Marine Geology, 27568 Bremerhaven, Germany, (6)AWI Bremerhaven, Bremerhaven, Germany, (7)University of Oldenburg, Institute for Chemistry and Biology of the Marine Environment, Oldenburg, Germany
Investigating the Role of Mesoscale Processes and Ice Dynamics in Carbon and Iron Fluxes in a Changing Amundsen Sea (INSPIRE) (91554)
Linquan Mu1, Patricia L Yager1, Pierre St-Laurent2, Michael S Dinniman2, Hilde Oliver1, Sharon Elisabeth Stammerjohn3, Robert M Sherrell4 and Eileen E Hofmann2, (1)University of Georgia, Department of Marine Sciences, Athens, GA, United States, (2)Old Dominion University, Center for Coastal Physical Oceanography, Norfolk, VA, United States, (3)University of Colorado Boulder, Boulder, CO, United States, (4)Rutgers University, Marine and Coastal Sciences and Earth and Planetary Sciences, New Brunswick, NJ, United States
Characterizing the Mechanisms Underlying Southern Ocean Diatom Community Composition Shifts (92319)
Laura Z. Holland, University of Rhode Island, Department of Cell and Molecular Biology, Kingston, RI, United States, Tom O. Delmont, University of Chicago, Chicago, IL, United States, Anne-Carlijn Alderkamp, Stanford University, Environmental Earth System Science, Stanford, CA, United States, Anton Post, University of Rhode Island, Graduate School of Oceanography, Narragansett, RI, United States and Bethany D. Jenkins, University of Rhode Island, Cell and Molecular Biology and Graduate School of Oceanography, Narragansett, RI, United States
Southern Ocean vertical iron fluxes; the ocean model effect (91159)
Vibe Schourup-Kristensen1, Judith Hauck1, Martin J Losch1, Dieter Wolf-Gladrow2 and Christoph D Voelker3, (1)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany, (2)Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany, (3)Alfred Wegener Institute, Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany
High-Resolution Simulation of Sea Ice and circulation in the West Antarctic Peninsula (WAP) (91604)
Cristina Schultz, Woods Hole Oceanographic Inst, Woods Hole, MA, United States and Scott C Doney, University of Virginia, Department of Environmental Sciences, Charlottesville, VA, United States
The Influence of Short-term Events on the Biological and Hydrographic Structure of the Southwestern Ross Sea (91665)
Randolph Michael Jones and Walker O Smith Jr, Virginia Institute of Marine Science, Gloucester Point, VA, United States
Maximum Drawdown of Atmospheric CO
2 due to Biological Uptake in the Ocean and the Ocean Temperature Effect (90946)
Malin Ödalen1, Jonas Nycander1, Kevin I. C. Oliver2, Johan Nilsson1, Laurent Brodeau1 and Andy Ridgwell3, (1)Stockholm University, Department of Meteorology, Stockholm, Sweden, (2)University of Southampton, Ocean and Earth Science, National Oceanography Centre, Southampton, United Kingdom, (3)University of California, Department of Earth Sciences, Riverside, CA, United States
