Vertical Flux of Phytoplankton and Particulate Matter in the
White Sea According to the Long-Term Exposure of Sediment
Traps

L. V. Ilyash^a, I. G. Radchenko^a, A. N. Novigatsky^b, A. P. Lisitzin^b, and V. P. Shevchenko^b

^a Faculty of Biology, Moscow State University, Moscow, Russia

^b Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow, Russia

e-mail: ilyashl@mail.ru

Received March 5, 2012; in final form, June 7, 2012

Abstract—The vertical fluxes of phytoplankton (VF_Phyto) and particulate organic carbon (VF_POC) in the White
Sea were determined using seven long-term (292 to 296 days) sediment traps moored at five stations at 67–255
m depths. The annual VF_Phyto and VF_POC ranged from 0.55 to 24.64 g C/m² and from 3.7 to 93.9gC/m²,
respectively. The highest VF_Phyto was observed in the Basin region located close to the Gorlo along the Tersk
coast. The algal biomass accounted for 15–43% of the VF_POC. Diatoms comprised the most important group,
accounting for 83–100% in the sedimented biomass. Thalassiosira nordenskioeldii dominated in the VF_Phyto at
all the stations except for the station in the basin close to Onega Bay, where Ditylum brightwellii was the most
abundant.

DOI: 10.1134/S0001437013020057

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