50 Hambaryan L . R . et al .: Peculiarities of Development of Phytoplankton as an Indicator of the Ecological State in Modern Hydrochemical Conditions of Masrik River
that is expressed in a high level of sulfate ions in the water of the river Sotk ( II class of pollution ) and there is a stable high concentration of chromium along the entire length of the river to its confluence with Lake Sevan ( III class of pollution ). High concentrations of phosphate ( III class ) and nitrate ( IV class ) are the results of influence of domestic wastewater . In the qualitative composition of phytoplankton , more than half ( about 53 %) are β-mesosaprobic species – indices of the level of pollution . The presence of blue-green and green algae in the river Masrik also indicates the averagelevel of ecosystem pollution . In terms of phytoplankton biomass , water quality of the river Masrik in different parts of the river , was changed by class - from satisfactorily clean up until contaminated , by category -from slightly contaminated to heavily contaminated . The comparison of water quality in 2013 and 2014 years allows to conclude that the presence of more acidic environment and a high level of organic pollution in 2014 created favorable conditions for the growth and development not only for phytoplankton blooms , but also formacrophytes , which indicates degradation of the ecological conditions of the river .
Acknowledgment
The authors wish to express their thanks to GIS specialist , senior researcher Arakelyan Alexander for technical support in design of this paper .
References
[ 1 ] Standards of maximum permissible concentrations that often can be found in natural waters of chemicals and substances of human origin . Approved by the Ministry of Health of RA and registered by the Ministry of Justice of RA , 2002 ( In Russian ).
[ 2 ] Norms for assurance of river water quality for each river basin , depends on peculiarities of the area . The government decision of RA . 27.01.2011 ( In Armenian )
[ 3 ] Guidelines for collecting and processing of materials in hydrobiological studies on freshwater bodies . Phytoplankton and its products . Leningrad , 1981 . ( In Russian )
[ 4 ] Kiselev I . A . The study of plankton of water bodies , 1950 . ( In Russian )
[ 5 ] Zabelina , M . M ., Kiselev I . A ., Proshkina-Lavrenko A . I ., Sheshukova V . S ., Identification Book of Freshwater Algae of the Soviet Union , Diatoms . SovetskayaNauka , Moskva . 1951 ( In Russian )
[ 6 ] Hambaryan L ., Shahasizyan I . Freshwater algae families determinant , Yerevan , 2014 , YSU published , 61p .
[ 7 ] Makovinska Y . Manual for quantitive and qualitive monitoring of freshwater ecosystems phytoplankton community , 2013 , 103 p . ( In Russian )
[ 8 ] Standardized methods for studying water quality . Part III . Methods of biological water analysis . Appendix 2 : Atlas of saprobic organisms . Moscow , Sekretariat SEV , 1977 . 228 p . ( In Russian )
[ 9 ] Evaluation of nowadays natural contamination of Sevan Lake basin from Sotq ore deposit . Determination of natural background on the land and in the lake basin . Institute of Geological Sciences NAS RA and scientific research company Georisk . Final report . Contract YE 013 / 08 . Yerevan 2008 , p . 48 ( In Armenian )
[ 10 ] Assessment of the impact of the planned processing plant and mining tails on the environment in the basin of Lake Sevan . Institute of Geological Sciences of Armenia . Final Report . Contract GPMG 007 / 09 . Yerevan , 2009 , 55p .
[ 11 ] Hambaryan L . et al . Heavy metal pollution of the catchment basins of the Voghchi and Meghriget rivers ( Armenia ) and risks to the environment associated with water pollution . Academic journal of science . 2013 , CD-ROM . ISSN : 2165 – 6282 : 2 ( 2 ): 255-268 .
[ 12 ] Hovhannisyan R . H . Book “ Lake Sevan , yesterday , today …..”. – Yerevan : Press of NAS RA , 1994 , 479 pp .
[ 13 ] Hambaryan L ., Hovsepyan A ., Khachikyan T . Influence of Lake Sevan catchment basin phytoplankton community structure on the same of the lake . Regional workshop on “ Sustainable Management of Water Resources and Conservation of Mountain Lake Ecosystem of Asian Countries ”, Yerevan , Armenia , 25-29 June , 2014 , pp . 102-112
[ 14 ] Barinova S . S ., Medvedev L . A ., Anisimov O . V . Algae biodiversity indicators of environment . - Tel Aviv , 2006 . - 498 p ( In Russian )
[ 15 ] Nikanorov A . M . Scientific bases of water quality monitoring , S-Peterburg , 2005 , pp . 367-372 . ( In Russian )
[ 16 ] Oswald W . J . Microalgae and waste water treatment . In : Borowitzka M . A ., Borowitzka L . J ( eds ) Microalgae biotechnology . Cambridge University Press , Cambridge , 1998 , pp . 691-707