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Polar Biology

, Volume 37, Issue 3, pp 375–389 | Cite as

Protist community composition in the Pacific sector of the Southern Ocean during austral summer 2010

  • Christian WolfEmail author
  • Stephan Frickenhaus
  • Estelle S. Kilias
  • Ilka Peeken
  • Katja Metfies
Original Paper

Abstract

Knowledge about the protist diversity of the Pacific sector of the Southern Ocean is scarce. We tested the hypothesis that distinct protist community assemblages characterize large-scale water masses. Therefore, we determined the composition and biogeography of late summer protist assemblages along a transect from the coast of New Zealand to the eastern Ross Sea. We used state of the art molecular approaches, such as automated ribosomal intergenic spacer analysis and 454-pyrosequencing, combined with high-performance liquid chromatography pigment analysis to study the protist assemblage. We found distinct biogeographic patterns defined by the environmental conditions in the particular region. Different water masses harbored different microbial communities. In contrast to the Arctic Ocean, picoeukaryotes had minor importance throughout the investigated transect and showed very low contribution south of the Polar Front. Dinoflagellates, Syndiniales, and small stramenopiles were dominating the sequence assemblage in the Subantarctic Zone, whereas the relative abundance of diatoms increased southwards, in the Polar Frontal Zone and Antarctic Zone. South of the Polar Front, most sequences belonged to haptophytes. This study delivers a comprehensive and taxon detailed overview of the protist composition in the investigated area during the austral summer 2010.

Keywords

Phytoplankton Eukaryotic diversity ARISA Next-generation sequencing HPLC 

Notes

Acknowledgments

This study was accomplished within the Young Investigator Group PLANKTOSENS (VH-NG-500), funded by the Initiative and Networking Fund of the Helmholtz Association. We thank the captain and crew of the RV Polarstern for their support during the cruise. We are grateful to F. Kilpert and B. Beszteri for their bioinformatical support. We also want to thank A. Schroer, A. Nicolaus, and K. Oetjen for technical support in the laboratory and Steven Holland for providing access to the program Analytic Rarefaction 1.3. We would like to acknowledge E. M. Nöthig and K. Kohls for their insightful discussions and reviews of this manuscript.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Christian Wolf
    • 1
    Email author
  • Stephan Frickenhaus
    • 1
  • Estelle S. Kilias
    • 1
  • Ilka Peeken
    • 1
    • 2
  • Katja Metfies
    • 1
  1. 1.Alfred Wegener Institute Helmholtz Centre for Polar and Marine ResearchBremerhavenGermany
  2. 2.MARUM, Center for Marine Environmental SciencesUniversity of BremenBremenGermany

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