Метан и сульфитредуцирующие клостридии как показатели экологического состояния пелоидов гиперсоленых озер

Abstract

The results of field studies of bottom sediments (peloids) of the hypersaline lakes Belyamin, Baskunchak, Elton and flows into Elton the small Smorogda River are presented. The number of sulfite-reducing clostridia (SRC) in bottom sediments was determined and the perfringens titer was calculated. Based on the perfringens titer, the sanitary and microbiological state of bottom sediments was assessed for the possibility of their use for balneological procedures. Based on the perfringens titer, the possibility of using bottom sediments for balneological procedures was assessed. Research has shown that in samples of individual layers of bottom sediments of Lake Baskunchak and the mouth of the Smorogda River, which flows into Lake Elton, the number of vegetative cells of sulfite-reducing clostridia slightly exceeds the standard values for peloids. The ingress of sewage into the peloids of Lake Baskunchak may be due to the settlements of Verkhny Baskunchak, Sredniy Baskunchak and Nizhny Baskunchak located near the lake. Participation of sulfite-reducing clostridia, along with sulfate-reducing bacteria, in the generation of methane and hydrogen sulfide was noted. The possibility of using data on methane content and the amount of SRC to assess the ecological state of peloids is shown.