Intermittent destratification: A therapy measure against cyanobacteria in lakes

Abstract

In a small lake intermittent destratification was installed after several other therapy measures (chemical phosphorus immobilization, permanent destratification) had been tested. When an aerobic sediment/water interface can be maintained, intermittent destratification has been proven to remove cyanobacteria and to prevent optimal development of other members of the photoautotrophic plankton. Intermittent destratification is a very fast working therapy and seems to be applicable even in relatively shallow lakes (<15 m) in which permanent destratification seems to be risky.