Siliceous phytoplankton fluxes off northwest Africa, supplement to: Romero, Oscar E; Lange, Carina Beatriz; Wefer, Gerold (2002): Interannual variability (1988-1991) of siliceous phytoplankton fluxes off NW Africa. Journal of Plankton Research, 24(10), 1035-1046

Oscar E Romero, Carina Beatriz Lange & Gerold Wefer
Four years of observations (1988-1991) of downward fluxes of diatoms and silicoflagellates at a trap site off Cape Blanc (ca. 20°N, 20°W), northwest Africa, are presented. Significant variations in flux and species composition were observed as well as a marked drop in the export of biogenic opal (and diatoms) from 1988 to 1989; fluxes remained low thereafter. We hypothesize that this diminution might be related to decreased coastal upwelling intensity and offshore spreading of the...
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