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... southeastern part of the Baltic Sea. A hydrobiological study was carried out in spring and summer of 1998—2009 in the framework of national monitoring. The species composition of the Calanoida group was identified as well as the variations in their abundance and biomass. A seasonal (spring – summer) increase in the abundance and biomass of zooplankton and Calanoida was observed. The seasonal increase took place against the background of a steady decrease in the abundance abundance and biomass ...

... larva length composition and juvenile recruitment in perennial natural colonies in the Prybrezhny Querry (the Kaliningrad region). In 2002, zebra mussel larvae were found in plankton from the second part of July till the end of August. The peaks of abundance were registered in the middle of July and in the beginning of August. The larvae accounted for 33% of the total zooplankton abundance. The size of larvae varied from 100 to 375 μm. The beginning of the juvenile settlement was observed in July....

This article investigates the state of chironomid communities in Lake Penkovoe, Pond Isakovsky, Pond Shkolny, and the Karasevka pond system in Kaliningrad in spring 2011. The authors provide new data on the species composition, abundance, and biomass of chironomidae. The Shannon, Simpson, Balushkin, and Margalef indices were calculated for the chironomid communities. The authors identified the dominant species in the communities of chironomids and evaluated the quality of water ...

... морфология пресноводных животных: сб. науч. тр. Л., 1986. Вып. 56 (59). С. 280—306. Vinokurova N. V., Chervotkina T. A. chironomids, Lake Penkovoe, Pond Isakovsky, Karasevka pond system, Pond Shkolny, abundance, biomass, species diversity. 103-112