- Macrobenthos in monitoring of trace metals
- Applicability of bioindication methods in various water bodies
- Abiotic factors shaping macro- and microbenthic assemblages
- Interactions between organisms of activated sludge
- Rotifers as a tool against activated-sludge bulking
- Influence of rotifers and protists on the efficiency of activated sludge
- Induced defences and their role in microbial food webs
- Ecology of predatory fungi