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Seasonal Plankton Dynamics along a Cross-Shelf Gradient

Nils Chr. Stenseth, Marcos Llope, Ricardo Anadón, Lorenzo Ciannelli, Kung-Sik Chan, Dag Ø. Hjermann, Espen Bagøien and Geir Ottersen
Proceedings: Biological Sciences
Vol. 273, No. 1603 (Nov. 22, 2006), pp. 2831-2838
Published by: Royal Society
Stable URL: http://www.jstor.org/stable/25223686
Page Count: 8
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Seasonal Plankton Dynamics along a Cross-Shelf Gradient
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Abstract

Much interest has recently been devoted to reconstructing the dynamic structure of ecological systems on the basis of time-series data. Using 10 years of monthly data on phyto- and zooplankton abundance from the Bay of Biscay (coastal to shelf-break sites), we demonstrate that the interaction between these two plankton components is approximately linear, whereas the effects of environmental factors (nutrients, temperature, upwelling and photoperiod) on these two plankton population growth rates are nonlinear. With the inclusion of the environmental factors, the main observed seasonal and inter-annual dynamic patterns within the studied plankton assemblage also indicate the prevalence of bottom-up regulatory control.

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