PI13A:
Cross-Shore Fluxes in Ocean Boundary Currents: Biogeochemical and Ecological Consequences I

Session ID#: 92427

Session Description:
This session invites contributions on the processes underlying cross-shore fluxes in eastern and western boundary currents and their biogeochemical and ecological consequences.  Cross-shore transport mediated by coastal filaments, eddies, Ekman transport, and other processes advects carbon, dissolved nutrients, and organisms.  Offshore advection can be a loss term for populations in coastal regions and support offshore communities through nutrient and organic matter inputs across Eastern Boundary Currents, while warm and cold-core rings transport communities through Western Boundary Currents.  Cross-shore transport of organisms from nearshore to the offshore, or vice versa, also leads to locally altered community characteristics, gene expression, food web structure, and the occurrence of biological €œhot-spots.€ Transport creates challenges for life history closure that may lead to Diel Vertical Migration, dormancy, or other types of behavior that increase residence time in specific ocean provinces.  Cross-shore transport also creates spatial decoupling of New Production and vertical export, such that the classical steady-state assumption that local New Production is balanced by local Export Production does not hold.  In situ field studies, satellite analyses, Lagrangian and modeling studies that analyze the mechanisms and consequences of cross-shore fluxes are all encouraged.  Studies that address long-term variations in transport processes are also appropriate.
Co-Sponsor(s):
  • CP - Coastal and Estuarine Processes
  • ME - Marine Ecology and Biodiversity
  • OB - Ocean Biology and Biogeochemistry
Index Terms:

4219 Continental shelf and slope processes [OCEANOGRAPHY: GENERAL]
4273 Physical and biogeochemical interactions [OCEANOGRAPHY: GENERAL]
4806 Carbon cycling [OCEANOGRAPHY: BIOLOGICAL]
4815 Ecosystems, structure, dynamics, and modeling [OCEANOGRAPHY: BIOLOGICAL]
Primary Chair:  Mark D Ohman, Scripps Institution of Oceanography, UC San Diego, La Jolla, CA, United States
Co-chairs:  Francesco d'Ovidio, Institut Pierre Simon Laplace, Paris, France, Michael R Stukel, Florida State University, Earth, Ocean and Atmospheric Science, Tallahassee, FL, United States and Julie E Keister, University of Washington, School of Oceanography, Seattle, WA, United States
Primary Liaison:  Mark D Ohman, Scripps Institution of Oceanography, UC San Diego, La Jolla, CA, United States
Moderators:  Julie E Keister, University of Washington, School of Oceanography, Seattle, WA, United States and Michael R Stukel, Florida State University, Tallahassee, FL, United States
Student Paper Review Liaison:  Michael R Stukel, Florida State University, Tallahassee, FL, United States

Abstracts Submitted to this Session:

PI13A-01
Iron Limitation and Macronutrient Dynamics Associated with Cross-shore Filaments in the California Current System (654798)
Katherine Barbeau1, Kiefer Forsch1, Lauren Manck2, Kayleen Fulton1, Maxwell Fenton1, Tyler Coale1,3, Sarah M Schwenck4,5, Robert H Lampe3,6, Michael R Stukel7 and Andrew E Allen1,3, (1)University of California San Diego, Scripps Institution of Oceanography, La Jolla, CA, United States, (2)University of California San Diego, Scripps Institution of Oceanography, La Jolla, United States, (3)J. Craig Venter Institute, La Jolla, CA, United States, (4)Scripps Institution of Oceanography, La Jolla, CA, United States, (5)J. Craig Venter Institute La Jolla, La Jolla, CA, United States, (6)Scripps Institution of Oceanography, La Jolla, United States, (7)Florida State University, Tallahassee, FL, United States
PI13A-02
Productivity and Export along an Upwelling Filament in the California Current Ecosystem using a Multi Method Approach (650961)
Sven Alexander Kranz1, Thomas Bryce Kelly1, Seaver Wang2, Nicolas Cassar2 and Michael R Stukel1, (1)Florida State University, Earth, Ocean and Atmospheric Science, Tallahassee, FL, United States, (2)Duke University, Earth and Ocean Sciences, Nicholas School of the Environment, Durham, NC, United States
PI13A-03
Dynamics of phytoplankton growth and microzooplankton grazing during cross-shelf filament transport in the California Current Ecosystem (656209)
Michael R Landry1, Michael R Stukel2, Thomas Bryce Kelly3 and Shonna Dovel1, (1)Scripps Institution of Oceanography, La Jolla, CA, United States, (2)Florida State University, Tallahassee, FL, United States, (3)Florida State University, Earth, Ocean, and Atmospheric Science, Tallahassee, United States
PI13A-04
Insights into Viral-Induced Mortality of the Microbial Food Web Within the California Current Ecosystem Through a Series of Modified Dilution Experiments (655508)
Sarah M Schwenck1,2, Shonna Dovel1, Alice Levesque2, Michael R Stukel3, Michael R Landry1, Andrew Allen2,4 and Lisa A Zeigler5, (1)Scripps Institution of Oceanography, La Jolla, CA, United States, (2)J. Craig Venter Institute La Jolla, La Jolla, CA, United States, (3)Florida State University, Tallahassee, FL, United States, (4)Scripps Institution of Oceanography, La Jolla, United States, (5)J. Craig Venter Institute, La Jolla, CA, United States
PI13A-05
Assessment of frontal gradients in zooplankton communities across a coastal upwelling filament by an autonomous Zooglider (648833)
Sven Gastauer, Scripps Institution of Oceanography, La Jolla, United States and Mark D Ohman, Scripps Institution of Oceanography, La Jolla, CA, United States
PI13A-06
Investigating the biogeochemical impact of an across-shore filament (648419)
Thomas Bryce Kelly1,2, Ralf Goericke3, Mark D Ohman4, Hajoon Song5, Sven Alexander Kranz6, Michael R Landry7 and Michael R Stukel1, (1)Florida State University, Earth, Ocean and Atmospheric Science, Tallahassee, FL, United States, (2)Center for Ocean-Atmospheric Prediction Studies, Tallahassee, FL, United States, (3)Scripps Institution of Oceanography, Integrative Oceanography, La Jolla, CA, United States, (4)Scripps Institution of Oceanography, La Jolla, CA, United States, (5)Massachusetts Institute of Technology, Seoul, South Korea, (6)Rice University, Department of Biosciences, Houston, United States, (7)Scripps Inst Oceanography, La Jolla, CA, United States
PI13A-07
US west coast variability of low-oxygen conditions (648906)
Pierre Damien1, Faycal Kessouri1, Daniele Bianchi2, James C McWilliams3, Lionel Renault1 and Curtis A. Deutsch4, (1)University of California Los Angeles, Atmospheric and Oceanic Sciences, Los Angeles, United States, (2)University of California Los Angeles, Atmospheric and Oceanic Sciences, Los Angeles, CA, United States, (3)University of California, Los Angeles, Atmospheric and Oceanic Sciences, Los Angeles, United States, (4)University of Washington Seattle Campus, School of Oceanography, Seattle, United States
PI13A-08
Modelled across-shore transport and connectivity in the coastal seas east of Yucatan. (650327)
Jason T Holt1, Claudia Gabriela Mayorga Adame2 and Jeff Polton2, (1)National Oceanography Center, Liverpool, United Kingdom, (2)National Oceanography Centre, Liverpool, United Kingdom
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