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

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

20 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)173-188
Number of pages16
JournalBiogeochemistry
Volume83
Issue number1-3
DOIs
Publication statusPublished - Mar-2007
EventMeeting of the Scientific-Committee on Oceanic Research - , Netherlands
Duration: 30-Aug-20053-Sep-2005

Keywords

  • Eastern English Channel
  • patchiness
  • Phaeocystic globosa
  • plankton rheology
  • turbulence
  • SCALE PHYTOPLANKTON PATCHINESS
  • VISCOELASTIC PROPERTIES
  • PARTICLES TEP
  • WATER-COLUMN
  • SEA
  • AUTOCORRELATION
  • COMPONENTS
  • COPEPODS
  • BEHAVIOR
  • PLANKTON

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