eng Oriental Scientific Publishing Company Biosciences Biotechnology Research Asia 0973-1245 2014-12-28 11 3 10163 article Lyailya Akbayeva 1 Ruslan Muratov 1 Aizhan Zhamangara 1 Raikhan Beisenova 1 Bolatbek Zhantokov 1 L.N. Gumilyov Eurasian National University Republic of Kazakhstan, 010008, Astana, Mirzoyan Street Water from Esil River was sampled in March-November 2013 and studied. Hydrochemical samples were used to determine chemical pollutants and water quality class. Hydrobiological water samples were used to define: 1) total bacterialcount, share of heterotrophic bacteria, bacterial production; 2) qualitative and quantitative characteristics of phytoplankton: species diversity, primary daily productivity. The outcomes were compared by their seasonal dynamics. https://www.biotech-asia.org/vol11no3/seasonal-dynamics-of-phytoplankton-and-bacterial-plankton-characteristics-in-esil-river/ Hydrochemistry; bacterial plankton; phytoplankton; primary daily production; trophicity