Benthic foraminifera were examined in 236 sediment samples at an interval of 1-2 or 4 cm. Benthic foraminifera were studied in sediment size fraction of more than 63 µm. Every specimen was counted and identified down to the species level using a stereo microscope ZEISS Stemi 2000-С. Benthic foraminifera abundance (BFA) expressed as the number of shells per 1 g of dry sediment (shells/g); species richness as the number of species per sample (species/sample), and the percentages of each species in the benthic foraminifera taxa assemblages were calculated.