||Le Fevre-Lehoerff Geneviève1, Ibanez Frédéric2, Poniz Paola2, Fromentin Jean-Marc2
||1 : IFREMER, CTR BREST, BP 70, F-29280 PLOUZANE, FRANCE.
2 : OBSERV OCEANOL, STN ZOOL, F-06230 VILLEFRANCHE SUR MER, FRANCE.
||Marine Ecology Progress Series (0171-8630) (Inter-research), 1995-12 , Vol. 129 , N. 1-3 , P. 269-281
|WOS© Times Cited
||time series, zooplankton, meteorology, hydrology, southern North Sea
||Planktonic time series collected since 1975 off Gravelines, France, were analysed in the context of climatic changes. Principal component analysis and the cumulative sums method wereapplied to 30 data sets which included meteorological and hydrological parameters and planktonic descriptors. Eight groups of biological descriptors were linked to external parameters. The study of winds highlighted the importance of cyclonic and anticyclonic influences. Seven year cycles appeared clearly in air temperature and in species abundance with different trophic levels for species such as Ternora longicornis, Oikopleura dioica and Sagitta setosa, whereas an 11 yr cycle appeared for Pseudocalanus minutus. A 3 to 4 yr cycle was detected for atmospheric pressure, precipitation and some species. This cycle may or may not be superimposed on another (for example, on an 11 yr cycle).
|Publisher's official version