Zooplankton communities and oceanographic structures in a high-resolution grid in the south-eastern corner of the Bay of Biscay

Aitor Albaina*, Xabier Irigoyen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

A one year long monthly sampling series at a fixed station was combined with a high-spatial resolution survey (May 2003) to investigate factors controlling zooplankton distribution in the south-eastern corner of the Bay of Biscay. Species abundance and gonad maturity for Calanoides carinatus and Calanus helgolandicus were estimated to clarify whether the observed spatial patterns were attributable to increased population growth or to mechanical accumulation. The two studies included distinct oceanographic regimes. The eastern corner of the grid was characterized by Adour river plume waters and the Cap Breton canyon, and the rest of the area by an alternating pattern of physical convergences and divergences. In the river plume, the zooplankton community diversity and abundances were highest in response to the nutrient enriched river plume waters and the submarine canyon. In the rest of the area, distribution and abundance patterns were the result of a combination of behaviour and physical transport.

Original languageEnglish (US)
Pages (from-to)433-446
Number of pages14
JournalEstuarine, Coastal and Shelf Science
Volume75
Issue number4
DOIs
StatePublished - Dec 1 2007

Keywords

  • Bay of Biscay
  • Calanoides carinatus
  • Calanus helgolandicus
  • Gonad development Stage (GS)
  • mesoscale
  • zooplankton

ASJC Scopus subject areas

  • Oceanography
  • Aquatic Science

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