TY JOUR TI IMPROVEMENT OF THE METHOD FOR ASSESSMENT OF THE HETEROTROPHIC ACTIVITY OF FRESHWATER BACTERIA BY STUDYING HOW BACTERIAL COMMUNITY CONSUMES THE ORGANIC MATTER EXCRETED BY ALGAE: ISSUES OF WATER QUALITY KW algae KW bacteria KW aquatic microorganisms KW heterotrophic activity KW phytoplankton KW dissolved organic matter (DOM) KW sorption of DOM on detritus KW membrane filters JO Fisheries AU Sadchikov, A.P. AU Ostroumov, S.A. PY 2020 IS 2020 PB FSBI "TSUREN"