Long-term population dynamics of phototrophic sulfur bacteria in the chemocline of Lake Cadagno, Switzerland.

ABSTRACT: Population analyses in water samples obtained from the chemocline of crenogenic, meromictic Lake Cadagno, Switzerland, in October for the years 1994 to 2003 were studied using in situ hybridization with specific probes. During this 10-year period, large shifts in abundance between purple and green sulfur bacteria and among different populations were obtained. Purple sulfur bacteria were the numerically most prominent phototrophic sulfur bacteria in samples obtained from 1994 to 2001, when they represented between 70 and 95% of the phototrophic sulfur bacteria. All populations of purple sulfur bacteria showed large fluctuations in time with populations belonging to the genus Lamprocystis being numerically much more important than those of the genera Chromatium and Thiocystis. Green sulfur b

SUBMITTER: Tonolla M 

PROVIDER: S-EPMC1169024 | biostudies-literature | 2005 Jul

REPOSITORIES: biostudies-literature