Interspecies relations in fish fry community in heated Konin lakes

Abstract

On the basis of the materials comprising 27 years of studies (1966 -1992) analyses have been made of the changes in time and of the interspecies relations within fry communities in heated Konin lakes. Fry numbers showed a decreasing trend, there were cycles in fry occurrence in particular years and a strict dependence was found between roach, bleak and stickleback.