Home – Home – Jornals – Contemporary Problems of Ecology 2002 number 4

The structure of phytoplankton is analyzed on the basis of estimates of the most numerous phytoplankton species that make the most contribution to its biomass.  Tha analysis was carried out in the years differing in the level of mellosira Baikaliansis. In the year precentig the maxsimum of mellosira nomber (1989), intensely vegetating were Romeria sp., Dinobrion sociale, Cyclotella baikalensis. In the year of mass mellosira reproduction (1990), species of genera Synedra, Cyclotella minuta, Chrysidalis sp., Glenodinum sp. And some green algae developed maximally. In the next year (1991) with the poorest yield of mellosira, the largest numbers were observed in Nitschia acicularis, Gymnodinium sp., Cyclotella baikalensis. These data do not quite coincide with those found in analysis of the time course of alga population in 1946