YEASTS FROM SEDIMENTS AND SOIL ALONG THE LAKE JAKUBOV

One hundred and eighty-three isolates of yeasts and yeast-like species belonging to 11 genera and 26 species were obtained from sediment and soil samples during two collections in summer and autumn, respectivel y. In sediment samples each of the species Candida krusei, Cryptococcu s laurentii, Hansenula anomala, and Trichosporon pullulans represented more than 10% of the total yeast population in summer. In autumn, Aur eobasidium pullulans, Cr. laurentii, Cr. albidus, and Sporobolomyces r oseus occurred the most frequently. Soil samples were often occupied b y Aureobasidium pullulans, Cr. laurentii, Hansenula anomala, Rhodotoru la graminis, and Trichosporon pullulans in summer. In autumn, each of the species A. pullulans, Cr. albidus, Cr. laurentii, and Tr. pullulan s represented more than 12% of the total yeast population. In both sea sons the proportion of individual groups of soil samples was very simi lar to that of autumnal sediment samples.