A community of microbial predators influences the composition of the bacterial community in wastewater. This explains seasonal variations in the microbial community that affect the efficiency of water treatment. This is the result of a study conducted by Nils Heck and PD Dr. Kenneth Dumack from the University of Cologne's Institute of Zoology. The study has been published, under the title "Microeukaryotic predators shape the wastewater microbiome," in the journal Water Research.
