Phytoplankton of river Masrik | Page 5

48 Hambaryan L. R. et al.: Peculiarities of Development of Phytoplankton as an Indicator of the Ecological State in Modern Hydrochemical Conditions of Masrik River Fig. 4. The Level of Content of Biogen Compounds in the Water of Masrik River in 2013 and 2014 Fig. 5. The Level of Content of Heavy Metals in the Water of Masrik River in 2013 and 2014. In the ores and rocks of Sotk ore deposit there are elements classified as a hazard of I and II class: respectively the group of Cd, Pb, As, Hg, Zn and the group of Cu, Co, Ni, Cr, Mo, Sb. Selected items in the mines are mainly presented as sulfide minerals which are not water resistant and are broken down in aerobic conditions forming higher acidic environment with a high mobility of releasing elements [9, 10]. Consideration of the content of heavy metals in ores shows the connection between the prevalence of this elements in ores and their high content in the waters of the river[9]. Qualitative and quantitative research on the composition of phytoplankton showed that the main communities were 3 groups of algae: diatoms, green and blue-green. Dominant group were diatoms. As a part of all groups of algae-dominated types were eutrophicators, β-mezosaprobs (about 53%), indicating about the average level of organic pollution of the river. As a part of the green algae Spirogira sp. was found, which ecology is not inherent to the environment of reoplankton, as these species are widespread in the slowly flowing and stagnant waters, forming a mass of slime. The prevalence of this type indicates the presence of fecal contamination in the water. 3.2. Hydrobiological Study of the Water of Masrik River The maximum number of phytoplankton in the investigated areas was 16,854,000 cells / l, and the biomass