Acta Ichthyologica et Piscatoria 7(1): 59-79, doi: 10.3750/AIP1977.07.1.05
The zooplankton removal from lakes by the River Płonia
expand article infoB. Szlauer
Open Access
The zooplankton species composition, abundance and biomass in places of the River Płonia′s outflow from lakes were investigated. The zooplankton density and biomass were found to reach 2 million individuals/m3 and 11 g/m3, respectively. A number of seasonal phenomena as well as diurnal abundance fluctuations were found out. The zooplankton removed from lakes was quickly reduced in the river.