Precursors of Copepod Abundance in the Gulf of Maine in Atmospheric Centers of Action and Sea Surface Temperature |
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| Authors: | Sergey Piontkovski Sultan Hameed |
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| Institution: |
a Marine Sciences Research Center, Stony Brook University, Stony Brook, NY 11794-5000, USA. |
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| Abstract: | Interannual variations of total copepod abundance in the Gulf of Maine (1961-1991) are analyzed and related to the semi-permanent atmospheric pressure systems: Icelandic Low (IL) and the Azores High (AH). These centers of action dominate atmospheric and oceanic circulation in the North Atlantic. Cross-correlation analysis of zooplankton, sea surface temperature (SST) and the atmospheric characteristics have revealed different (from one to three years) time lags between the above characteristics. A multiple stepwise regression analysis gave a correlation value of 0.7 between observed and predicted interannual changes of total copepod abundance. A discussion is included of possible mechanisms that may contribute to the dynamic links that transfer atmospheric variation into observed changes in zooplankton abundance. |
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| Keywords: | Zooplankton Atmospheric Centers Of Action Climate Change Gulf Of Maine Interannual Variability North Atlantic Sea Level Pressure |
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