Spatial variability of the species composition, abundance, and productivity of the phytoplankton in the white sea in the late summer period

Community structure and spatial distribution of phytoplankton in relation to hydrography in the Laptev Sea and the East Siberian Sea (autumn 2008)

“…On the other hand, the heterotrophic component represented by dinoflagellates of Dinophysis and Protoperidinium genera (D.acuminata, D.contracta, D.norvegica, P.pallidum, P.pellucidum, P.ovatum, P.granii) was a significant contributor to the total algal abundance and biomass. Dinoflagellate-dominated population is typical for late summer phytoplankton in the White Sea (Ilyash et al 2003(Ilyash et al , 2011 and the Ob-Yenisei shallow zone of the Kara Sea (Makarevich et al 2014).…”

Suspended particulate matter in the White Sea: the results of long-term interdisciplinary research

“…The SPM mass concentration was determined by the standard technique of vacuum filtering at 0.4 atm using membrane filters (diameter 47 mm, pore diameter 0.45 μm) (Cutter et al 2010). The chemical composition of SPM was examined, the flow of suspended and dissolved matter from rivers was analysed, and marine phyto-and bacterio plankton were studied (Kravchishina et al 2008, Ilyash et al 2011. The Multisizer 3 modification of a Coulter counter (~2000 samples) was used for the study of the concentration by volume and grain size of the SPM (Mercus 2009).…”

“…The content of terrigenous particles decreases with distance from the river mouths, although remains quite high (Kravchishina and Lisitzin 2011). Comparison of the SPM concentrations by volume (0.5-5 mm 3 /L) with the amount of phytoplankton (0.12-3.65 mm 3 /L) has shown the following fractions of phytoplankton in the SPM in different regions of the sea: 27% in the vertex of Dvina Bay, 40% in the basin, and 65% in Kandalaksha Bay (Ilyash et al 2011). Content of Corg in the SPM varies from 5 to 30% (automatically measured by the culonometric method).…”