![]() ![]() Flagellates dominated throughout the study area, while diatoms, dominated by Fragilariopsis cylindrus, showed a decreasing contribution to the sinking protist cell assemblage towards fall. A cluster-based analysis of the sinking protist cell assemblage revealed a seasonal succession that prevailed over spatial and interannual differences between the stations sampled in the eastern Beaufort Sea. Zooplankton, primarily copepods, played an important role in the sinking export of particulate organic material, particularly in the Amundsen Gulf. Still, the POC sinking export accounted for, on average, half of the particulate primary production throughout this study. low daily loss rates of suspended chl a and POC (both averaging ca. ![]() ![]() A high retention of suspended biomass was observed throughout this study, i.e. The highest chl a and POC sinking fluxes during this study were therefore recorded during summer (3.6 and 258 mg m(-2) d(-1), respectively). The 2 regions showed a general decreasing trend in sinking fluxes towards fall. the Amundsen Gulf and the Mackenzie shelf and slope, showed similar ranges in the sinking export of chlorophyll a (chl a) and particulate organic carbon (POC) in fall, while regional differences were observed in summer. The different regions of the sampling area, i.e. Free-drifting short-term particle interceptor traps were deployed, generally at 50 m, during fall 20, and summer 2004. This paper presents an extensive spatial and temporal study of the sinking export of particulate organic material below the euphotic zone in the eastern Beaufort Sea. ![]()
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