Biogeochemistry

, Volume 83, Issue 1, pp 173–188

The influence of Phaeocystis globosa on microscale spatial patterns of chlorophyll a and bulk-phase seawater viscosity

  • L. Seuront
  • C. Lacheze
  • M. J. Doubell
  • J. R. Seymour
  • V. Van Dongen-Vogels
  • K. Newton
  • A. C. Alderkamp
  • J. G. Mitchell
Original Paper

DOI: 10.1007/s10533-007-9097-z

Cite this article as:
Seuront, L., Lacheze, C., Doubell, M.J. et al. Biogeochemistry (2007) 83: 173. doi:10.1007/s10533-007-9097-z

Abstract

A two-dimensional microscale (5 cm resolution) sampler was used over the course of a phytoplankton spring bloom dominated by Phaeocystis globosa to investigate the structural properties of chlorophyll a and seawater excess viscosity distributions. The microscale distribution patterns of chlorophyll a and excess viscosity were never uniform nor random. Instead they exhibited different types and levels of aggregated spatial patterns that were related to the dynamics of the bloom. The chlorophyll a and seawater viscosity correlation patterns were also controlled by the dynamics of the bloom with positive and negative correlations before and after the formation of foam in the turbulent surf zone. The ecological relevance and implications of the observed patchiness and biologically induced increase in seawater viscosity are discussed and the combination of the enlarged colonial form and mucus secretion is suggested as a competitive advantage of P. globosa in highly turbulent environments where this species flourishes.

Keywords

Eastern English ChannelPatchinessPhaeocystic globosaPlankton rheologyTurbulence

Copyright information

© Springer Science+Business Media, Inc. 2007

Authors and Affiliations

  • L. Seuront
    • 1
    • 2
  • C. Lacheze
    • 1
  • M. J. Doubell
    • 2
  • J. R. Seymour
    • 3
  • V. Van Dongen-Vogels
    • 4
  • K. Newton
    • 2
  • A. C. Alderkamp
    • 5
  • J. G. Mitchell
    • 2
  1. 1.CNRS FRE 2816 ELICO, Station Marine de WimereuxUniversity of Sciences and Technologies of Lille-Lille 1WimereuxFrance
  2. 2.School of Biological SciencesFlinders UniversityAdelaideAustralia
  3. 3.Department of Civil and Environmental EngineeringMassachusetts Institute of TechnologyCambridgeUSA
  4. 4.Marine Biology LaboratoryCatholic University of LouvainLouvain-La-NeuveBelgium
  5. 5.Department of Marine BiologyUniversity of GroningenHarenThe Netherlands