Zooplankton is the collective name for a very diverse group of unicellular (Protozoa) and multicellular (Metazoa) organisms that live in surface water. They have different food sources, such as phytoplankton (herbivore), bacteria (bacteriavore), detritus (detrivore) or other zooplankton (carnivore).

Research into zooplankton is mainly used to determine the potential grazing pressure (PGP). The PGP is the ratio of the biomass of algae-eating zooplankton to phytoplankton. It describes the interaction between phytoplankton, zooplankton and fish. This information is very useful for food web analyses.

Research on zooplankton is also used for ecological assessments of surface water, and for the evaluation of fish predation and predation by carnivorous zooplankton.
Our analyzes of phytoplankton, zooplankton, blue-green algae, diatoms, macrofauna and macrozoobenthos are carried out under accreditation in accordance with ISO 17025, as described in scope no. L572.