PECULIARITY OF SUMMER PHYTOPLANKTON SPATIAL DISTRIBUTION IN THE ONEGA BAY OF THE WHITE SEA UNDER THE LOCAL HYDROPHYSICAL CONDITIONS
Abstract
The species composition and phytoplankton biomass, concentrations of chlorophyll “a” (Chl) and nutrients in the surface water layer, and concurrent hydrophysical conditions were studied in the Onega Bay of the White Sea during June, 2015. The temperature and salinity of surface water layer and the water column stability varied significantly in the bay. The nutrients concentrations exceeded the threshold limiting of phytoplankton development. The phytoplankton abundance was relatively low, mean values were: total phytoplankton biomass — 13,46±9,00 mg C/m3, concentration of chlorophyll “a” — 0,78±0,43 mg/m3, picophytoplankton biomass — 0,18±0,27 mg C/m3. The highest phytoplankton biomass was found near frontal zones. Structural analysis has revealed three phytoplankton communities that significantly have differed in structure.
About the Authors
T. A. Belevich
Department of Hydrobiology, School of Biology, Lomonosov Moscow State University
Russian Federation
Russian Federation
L. V. Ilyash
Department of Hydrobiology, School of Biology, Lomonosov Moscow State University
Russian Federation
Russian Federation
A. V. Zimin
St. Petersburg Branch, P.P. Shirshov Institute of Oceanology, Russian Academy of Sciences
Russian Federation
Russian Federation
M. D. Kravchishina
P.P. Shirshov Institute of Oceanology, Russian Academy of Sciences
Russian Federation
Russian Federation
A. E. Novikhin
Arctic and Antarctic Research Institute
Russian Federation
Russian Federation
E. D. Dobrotina
Arctic and Antarctic Research Institute
Russian Federation
Russian Federation
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Review
For citations:
Belevich T.A., Ilyash L.V., Zimin A.V., Kravchishina M.D., Novikhin A.E., Dobrotina E.D. PECULIARITY OF SUMMER PHYTOPLANKTON SPATIAL DISTRIBUTION IN THE ONEGA BAY OF THE WHITE SEA UNDER THE LOCAL HYDROPHYSICAL CONDITIONS. Vestnik Moskovskogo universiteta. Seriya 16. Biologiya. 2016;(3):27-33. (In Russ.)
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