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Lagrangian Approach to Phytoplankton Mesoscale Biogeography in the Kerguelen Region

  • Alice Della PennaEmail author
  • Simon Wotherspoon
  • Thomas W. Trull
  • Silvia De Monte
  • Craig Johnson
  • Francesco d’Ovidio
Conference paper
  • 391 Downloads
Part of the Springer Proceedings in Complexity book series (SPCOM)

Abstract

One of the purposes of biogeography is to identify areas within which a characteristic ecosystem is expected to occur. In the case of phytoplanktonic communities this knowledge is key to separate regions characterized by different biogeochemical processes, design efficient sampling strategies and recognize ecological hotspots. Meso- and submesoscale (1–100 km, few days to months) high variability interacts with typical bloom spatial and temporal scales and makes investigating phytoplankton biogeography challenging especially in remote regions like the Southern Ocean, where in-situ observations are extremely sparse. In this study we use a Lagrangian approach to interpret the mesoscale biogeography of diatom dominance of iron-enriched Kerguelen bloom. We define a “threshold” model relating diatom dominance with Lagrangian properties of water parcels. We find out that, in spite of the simplicity of this approach, the threshold model can reproduce the plume of diatom dominance that can be observed using the ocean color re-analysis PHYSAT.

Keywords

Southern Ocean Threshold Model Lagrangian Approach Phytoplanktonic Group Water Parcel 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer International Publishing Switzerland 2017

Authors and Affiliations

  • Alice Della Penna
    • 1
    • 2
    Email author
  • Simon Wotherspoon
    • 3
  • Thomas W. Trull
    • 4
    • 5
  • Silvia De Monte
    • 6
  • Craig Johnson
    • 3
  • Francesco d’Ovidio
    • 7
  1. 1.Quantitative Marine Sciences PhD Program, Institute for Marine and Antarctic StudiesUniversity of Tasmania and Commonwealth Scientific and Industrial Research OrganisationHobartAustralia
  2. 2.Sorbonne UniversitésUniv Paris Diderot CitéParisFrance
  3. 3.Institute for Marine and Antarctic StudiesUniversity of TasmaniaHobartAustralia
  4. 4.Commonwealth Scientific and Industrial Research OrganisationOceans and Atmosphere FlagshipHobartAustralia
  5. 5.Antarctic Climate and Ecosystems Cooperative Research CentreHobartAustralia
  6. 6.École Normale SupérieureUMR 7625 Ecologie et EvolutionParisFrance
  7. 7.Sorbonne UniversitésUPMC Univ Paris 06ParisFrance

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