Monitoring the composition of periphyton and epiliton cyanobacteria in the coastal shallow water (Black Sea, Sevastopol)

During 2017–2021 a study of the composition of periphytic cyanobacteria in the coastal waters of the bays of Sevastopol was carried out. The composition of cyanobacteria in the periphyton and epilithon varied over the years in the range of 4–7 and 2–8 forms, respectively. Over the entire period, 16 system-atic units have been identified, which are representatives of 7 orders: Chroococcales, Chroococcidiop-sidales, Synechococcales, Pleurocapsales, Oscillatoriales, Nostocales and Stigonematales. The absolute dominants in the periphyton of the glasses were cyanobacteria of the order Oscillatoriales, and oscillatory and Pleurocapsa in the epilithon. 11 strains of cyanobacteria have breen isolated from periphyton and epilithon.