SPATIAL AND SEASONAL PHYTOPLANKTON DIVERSITY IN LICHEŃSKIE AND ŚLESIŃSKIE LAKES, KONIŃSKIE DISTRICT, IN 1991-1993

Abstract

Studies carried out in heated lakes of Konińskie District in 1991-1993 confirmed the tendency in phytoplankton development observed in the late eighties. An increase of total algal biomass, a decrease of nannoplankton share, and a shift towards community structure typical for eutrophic lakes were observed. Mass development of phytoplankton in summer was limited by intensive water mixing within and between the lakes.