The basic features of the biocenosis of Lake Glubokoe (Moscow region,Eastern Europe) with a list of the animals and plants recorded

The zoocenosis of Lake Glubokoe has been characterized on the basis of long-term and paleobiocenotic studies. The present zoocenosis has existed for about 400 years. It was preceded by a tanatozoocenosis with a domination by Testacida. At present, the phytoplankton is dominated by Euchlorophyceae, Cyanophyta, Pyrrophyta, Bacillariophyta, and Chrysophyta, and the zooplankton by Daphnia spp. and Bosmina spp. In the zoobenthos, the community of Sergentia has now been replaced by that of Chironomus. The most numerous among the fish are Rutilus rutilus and Perca fluviatilis. The flora and fauna exist under conditions of a low total content of dissolved substances. There is a considerable number of acidophilic Desmidiales and Alonella nana. Periodic shifts of water pH towards acidity apparently affect the floral and faunal composition of the lake. The list of 440 animals and 232 plants is composed mainly of recent data; many groups of animals and plants have not yet been studied. The articles of this volume describe some dynamic characteristics of the main communities and inter-annual fluctuations.