Zooplankton and the North Atlantic oscillation: A basin-scale analysis

Sergey A. Piontkovski, Todd D. O'Brien, Serena F. Umani, Elena G. Krupa, Tamara S. Stuge, Kyanish S. Balymbetov, Olga V. Grishaeva, Abdul G. Kasymov

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Abstract

This study examines multiple, long-term zooplankton time series across the Atlantic region and its inland seas. Across a broad range of geographic regions and ecological environments, the impact of the North Atlantic Oscillation (NAO) on interannual changes in the zooplankton populations was evident. Across the mid-Atlantic, a correlation between the NAO and zooplankton abundance was present and remained positive from the northwestern Atlantic through the enclosed seas of the far eastern Atlantic. Following high NAO years, these regions experienced higher total zooplankton abundance or biomass. Following low NAO years, this trend was reversed. A time lag in the zooplankton response to the NAO was also evident, influenced more by the scale of the water basin than by latitudinal or longitudinal location. For some regions, the correlation between zooplankton and the NAO was higher when the NAO was substituted with its sub-components: the Azores High (AH) and the Icelandic Low (IL) atmospheric pressure systems. This suggests that decomposition of the NAO into its components might enhance the sensitivity of the analysis of biological time series with regard to climate change.

Original languageEnglish
Pages (from-to)1039-1046
Number of pages8
JournalJournal of Plankton Research
Volume28
Issue number11
DOIs
Publication statusPublished - Nov 2006

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ASJC Scopus subject areas

  • Aquatic Science

Cite this

Piontkovski, S. A., O'Brien, T. D., Umani, S. F., Krupa, E. G., Stuge, T. S., Balymbetov, K. S., ... Kasymov, A. G. (2006). Zooplankton and the North Atlantic oscillation: A basin-scale analysis. Journal of Plankton Research, 28(11), 1039-1046. https://doi.org/10.1093/plankt/fbl037