Eutrophication processes in a shallow, macrophyte-dominated lake - Factors influencing zooplankton structure and density in Lake Luknajno (Poland)

Influence of abiotic (temperature, concentration of nutrients) and biotic (macrophytes, phytoplankton, fish predation) factors on the species composition and seasonal dynamics of the zooplankton community (Rotifera and Crustacea) was analyzed. Strong interrelations between phyto- and zooplankton as well as the long-term effect of predation by fish on zooplankton were observed. An analysis of the qualitative and quantitative structure of zooplankton was used to assess the trophic state of Lake Luknajno.