The occurrence and contents of various carotenoids in different body parts of young forms of three sturgeonid species were studied with column and thin layer chromatography.
Fifty-one species of fungi were found in the oligotrophic Lake Hańcza and some adjacent lakes. The following fungi unknown from Poland were found in these lakes: Micromyces zygogonii, Blastocladia pringsheimii, Lagenidium marchalianum, Calyptralegnia achlyoides, Apodachlya pyrifera, and Tricladium giganteum.