BN44A:
A Multidisciplinary Approach to the Biological Carbon Pump: Understanding Its Efficiency and Predicting Its Future II Posters


Session ID#: 27937

Session Description:
The biological carbon pump (BCP) transports organic carbon away from the atmosphere to the deep-ocean and sediments, influencing atmospheric CO2levels. The efficiency of the BCP — ratio between fluxes to the deep ocean and primary productivity in the surface ocean — has been intensely studied for the past four decades. Multiple mechanisms contribute to the flux of organic matter to the ocean interior. Recently it has become increasingly clear that complex ecosystem interactions such as phytoplankton community composition and heterotrophic food webs, rather than primary production alone, influence the ability of the oceans to sequester organic carbon. Yet, the mechanisms controlling both the magnitude of carbon export and its fate in the ocean mesopelagic zone are not well understood and a multidisciplinary approach is needed to improve our understanding of these processes. We encourage submissions of field, experimental and modelling studies focusing on:

  • Innovative techniques and models to quantify BCP efficiency
  • Ecosystem processes (e.g. bloom phenology, plankton physiology, particle properties, controls on particle sinking rate and remineralisation)
  • Reconciliation of the discrepancy between POC sinking out of the surface ocean and carbon demand in the dark ocean.
  • Budget calculations and models that predict future BCP in a changing climate
Primary Chair:  Maria Villa-Alfageme, Universidad de Sevilla, Applied Physics II, Sevilla, Spain
Co-chairs:  Anna Belcher, NERC British Antarctic Survey, OBE, Cambridge, United Kingdom, Raffaele Bernardello, Barcelona Supercomputing Centre, Climate prediction, Barcelona, Spain and Matthieu Bressac, University of Tasmania, Institute for Marine and Antarctic Studies (IMAS), Hobart, Australia; Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Australia
Moderators:  Raffaele Bernardello, Barcelona Supercomputing Centre, Climate prediction, Barcelona, Spain, Matthieu Bressac, Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Australia and Maria Villa-Alfageme, Universidad de Sevilla, Applied Physics II, Sevilla, Spain
Student Paper Review Liaisons:  Maria Villa-Alfageme, Universidad de Sevilla, Applied Physics II, Sevilla, Spain and Raffaele Bernardello, Barcelona Supercomputing Centre, Climate prediction, Barcelona, Spain
Index Terms:

1615 Biogeochemical cycles, processes, and modeling [GLOBAL CHANGE]
4805 Biogeochemical cycles, processes, and modeling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4806 Carbon cycling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4815 Ecosystems, structure, dynamics, and modeling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
Cross-Topics:
  • CT - Chemical Tracers, Organic Matter and Trace Elements
  • IS - Ocean Observatories, Instrumentation and Sensing Technologies
  • OM - Ocean Modeling

Abstracts Submitted to this Session:

A Quantitative Model for the Impact of Zooplankton Diel Vertical Migration on the Vertical Carbon Flux of the Biological Pump (305517)
Kevin Archibald, Woods Hole Oceanographic Institution, Woods Hole, MA, United States and Scott C Doney, University of Virginia, Department of Environmental Sciences, Charlottesville, VA, United States
Export fluxes of particulate black carbon and autochthonous organic carbon in the Northeastern South China Sea (310207)
Weifeng Yang1, Xiufeng Zhao2, Min Chen3, Yusheng Qiu3 and Minfang Zheng4, (1)Xiamen University, State Key Laboratory of Marine Environmental Science and College of Ocean and Earth Sciences, Xiamen, China, (2)Xiamen University, College of Ocean and Earth Sciences, China, (3)State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, China, (4)Xiamen University, Xiamen, China
Observing Aggregate Formation of Phytoplankton at Different Growth Phases using Stereoscopic Imaging (306087)
Riley Sheridan Henning, University of San Diego, San Diego, United States, Kathryn Shanjun Ghiorso, University of San Diego, La Mesa, CA, United States and Jennifer C. Prairie, University of San Diego, Environmental and Ocean Sciences, San Diego, CA, United States
Aggregate Formation Properties Resulting from Changes in TEP at Different Phytoplankton Growth Phases (306093)
Kathryn Shanjun Ghiorso, University of San Diego, La Mesa, CA, United States, Riley Sheridan Henning, University of San Diego, San Diego, United States and Jennifer C. Prairie, University of San Diego, Environmental and Ocean Sciences, San Diego, CA, United States
Copepod Ingestion of Aggregates formed from Phytoplankton at Different Growth Phases (313396)
Grace Frances Cawley, University of San Diego, Salem, MA, United States, Andrea Mast, University of San Diego, CA, United States and Jennifer C. Prairie, University of San Diego, Environmental and Ocean Sciences, San Diego, CA, United States
The Role of Heterotrophic Bacteria on the Aggregation of Marine Synechococcus and Prochlorococcus (309760)
Bianca Nahir Cruz, Hinsby Cadillo-Quiroz and Susanne Neuer, Arizona State University, Tempe, AZ, United States
The effects of temperatures and nutrient supply ratios on the abundance and POC of typical marine phytoplankton species (309568)
Yang Ding1, Rong Bi1, Xi Chen1, Julian P Sachs2 and Meixun Zhao1, (1)Ocean University of China, Qingdao, China, (2)University of Washington, School of Oceanography, Seattle, WA, United States
Seasonal microplankton community sedimentation linked to environmental and biochemical drivers at a western Scotland study site (310089)
Laura Tulip1, David Pond1 and Greg L Cowie2, (1)Scottish Association for Marine Science, Oban, United Kingdom, (2)University of Edinburgh, School of GeoSciences, Edinburgh, United Kingdom
Impacts of Phytoplankton Dynamics on Biogeochemistry along the Western Antarctic Peninsula (317443)
Michael Scott Brown1, Oscar Schofield1, David R Munro2 and Colm Sweeney3,4, (1)Rutgers University, Department of Marine and Coastal Sciences, New Brunswick, NJ, United States, (2)University of Colorado, Department of Atmospheric and Oceanic Sciences and Institute for Arctic and Alpine Research, Boulder, CO, United States, (3)University of Colorado at Boulder, CIRES, Boulder, CO, United States, (4)NOAA/ESRL Global Monitoring Division, Boulder, CO, United States
Mechanisms Controlling Mesoscale and Submesoscale Hotspots in Net Primary Production and Export (318230)
Dennis Joseph McGillicuddy Jr, Woods Hole Oceanographic Institution, Woods Hole, MA, United States, Laure Resplandy, Princeton University, Department of Geosciences, Princeton, NJ, United States and Marina Levy, LOCEAN-IPSL, Université Pierre et Marie Curie, Paris, France
Microstructure and Composition of Marine Aggregates as Determinant for the Transfer Efficiency? (318389)
Joeran Maerz, Katharina Dorothea Six, Irene Stemmler and Tatiana Ilyina, Max Planck Institute for Meteorology, Hamburg, Germany
The Activity of Carbonic Anhydrase on Suspended and Sinking Particles in the North Pacific (324236)
Adam Subhas1,2, Sijia Dong3, Nathan Kemnitz4, Jess F Adkins1 and William Berelson3, (1)California Institute of Technology, Pasadena, CA, United States, (2)Woods Hole Oceanographic Institution, Woods Hole, MA, United States, (3)University of Southern California, Los Angeles, CA, United States, (4)University of Southern California, Earth Sciences, Los Angeles, CA, United States
A mechanistic model of an upper bound on oceanic carbon export as a function of mixed layer depth and temperature (320019)
Zuchuan Li, Duke University, Durham, NC, United States and Nicolas Cassar, Duke University, Earth and Ocean Sciences, Nicholas School of the Environment, Durham, NC, United States

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