A high frequency time series at weathership M, Norwegian sea, during the 1997 spring bloom: Feeding of adult female Calanus finmarchicus

Xabier Irigoyen*, Robert Head, Ulrike Klenke, Bettina Meyer-Harms, Derek Harbour, Barbara Niehoff, Hans Jürgen Hirche, Roger Harris

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

91 Scopus citations

Abstract

The feeding ecology of Calanus finmarchicus was investigated during spring 1997 at a permanent station in the Norwegian Sea (Stn M, 66°N, 2°E) as part of the TASC (Trans Atlantic Study of Calanus finmarchicus) project time-series investigations. The phytoplankton bloom began in mid May, coinciding with the onset of the stratification, and was mainly composed of diatoms and prymnesiophytes. Daily ingestion of phytoplankton by C. finmarchicus was about 2% of body carbon for the long period before the bloom, 30% during the bloom and 14 % after the bloom. Due to their low abundance, ingestion of ciliates represented only 2 to 6% of the phytoplankton ingestion. Body carbon and carbon/nitrogen ratio decreased significantly before the bloom indicating a deficit in carbon ingestion and the use of storage lipid during this period.

Original languageEnglish (US)
Pages (from-to)127-137
Number of pages11
JournalMarine Ecology Progress Series
Volume172
DOIs
StatePublished - Oct 22 1998

Keywords

  • Calanus finmarchicus
  • Feeding
  • Norwegian Sea
  • Phytoplankton Ciliates

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Aquatic Science
  • Ecology

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