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Trans-Atlantic responses of Calanus finmarchicus populations to basin-scale forcing associated with the North Atlantic Oscillation
Greene, C.H.; Pershing, A.J.; Conversi, A.; Planque, B.; Hannah, C.; Sameoto, D.; Head, E.; Smith, P.C.; Reid, P.C.; Jossi, J.; Mountain, D.; Benfield, M.C.; Wiebe, P.H.; Durbin, E. (2003). Trans-Atlantic responses of Calanus finmarchicus populations to basin-scale forcing associated with the North Atlantic Oscillation. Prog. Oceanogr. 58(2-4): 301-312. dx.doi.org/10.1016/j.pocean.2003.08.008
In: Progress in Oceanography. Pergamon: Oxford,New York,. ISSN 0079-6611, more
Peer reviewed article  

Also published as
  • Greene, C.H.; Pershing, A.J.; Conversi, A.; Planque, B.; Hannah, C.; Sameoto, D.; Head, E.; Smith, P.C.; Reid, P.C.; Jossi, J.; Mountain, D.; Benfield, M.C.; Wiebe, P.H.; Durbin, E. (2003). Trans-Atlantic responses of Calanus finmarchicus populations to basin-scale forcing associated with the North Atlantic Oscillation, in: Reid, P.C. et al. (Ed.) Achievements of the Continuous Plankton Recorder Survey and a vision for its future. Progress in Oceanography, 58(2-4): pp. 301-312. dx.doi.org/10.1016/j.pocean.2003.08.008, more

Available in Authors 
Document type: Conference paper

Keywords

Authors  Top 
  • Greene, C.H.
  • Pershing, A.J.
  • Conversi, A.
  • Planque, B.
  • Hannah, C.
  • Sameoto, D.
  • Head, E.
  • Smith, P.C.
  • Reid, P.C., more
  • Jossi, J.
  • Mountain, D.
  • Benfield, M.C.
  • Wiebe, P.H.
  • Durbin, E.

Abstract
    Populations of the copepod species Calanus finmarchicus often dominate the springtime biomass and secondary production of shelf ecosystems throughout the North Atlantic Ocean. Recently, it has been hypothesised that interannual to interdecadal fluctuations observed in such populations are driven primarily by climate-associated changes in ocean circulation. Here, we compare evidence from the North Sea and Gulf of Maine/Western Scotian Shelf (GoM/WSS) linking fluctuations in C. finmarchicus abundance to changes in ocean circulation associated with the North Atlantic Oscillation (NAO). A particularly striking contrast emerges from this Trans-Atlantic comparison: whereas the North Sea C. finmarchicus population exhibits a negative correlation with the NAO index, the GoM/WSS population exhibits a more complex, positive association with the index. The physical processes underlying these contrasting population responses are discussed in the context of regional- to basin-scale circulation changes associated with the NAO.

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