| ciliates from a fresh water sulfuretum. | ciliates were collected from a freshwater sulfuretum, lake cisó, which is part of a gypsum karstic area whose main feature is lake banyoles (girona, spain). chromatium, lamprocystis and chlorobium are the major phototrophic sulfur bacteria in lake cisó. blooms of a photosynthetic cryptomonad (up to 5 x 10(5) ind ml-1) were found at the metalimnion. the community of ciliates could be divided in three groups: aerobic, cosmopolitan, genera such as stentor and vorticella, in the epilimnion; a large ... | 1986 | 3089342 |