EN
The goal of the study was to compare enzymatic activities of Candida albicans, Candida guilliermondii and Rhodotorula glutinis collected from different aquatic ecosystems of Olsztyn. The highest enzymatic activity was observed in isolates obtained from astatic reservoirs (isolates of Candida albicans and Rhodotorula glutinis produced the complete set of 19 hydrolases tested). A slightly lower enzymatic activity was observed in isolates from a lake and the lowest in those from a river. The widest enzymatic spectrum as well as high and very high enzymatic activity (20-45 nmols) were found in isolates of Rhodotorula glutinis originating from the lake and astatic reservoirs and in Candida guilliermondii isolates from the lake. Both species are reported by hydrologists as important in the processes of waters self-purification.