Biological factors of water quality in a mesotrophic ecosystem

Dissolved organic matter (DOM) is one of the important parameters water quality in aquatic ecosystems. In experiments, phyto- and bacterioplankton actively consumed 14C-labeled chlorella hydrolyzate. Removal (by filtration) cyanobacteria from environment leads to an increase rate DOM consumption by bacteria. This indicates possibility a negative effect cyanobacterial metabolites on physiological processes bacterioplankton.