Physical measures to inhibit planktonic cyanobacteriae

Steinberg, C.E.W. and Gruhl, E. (1992) Physical measures to inhibit planktonic cyanobacteriae. In: Sutcliffe, D.W. and Jones, J.G. (eds.) Eutrophication: research and application to water supply. Ambleside, UK, Freshwater Biological Association, pp. 163-184. (FBA Special Publications,3)

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Abstract

In a small lake, intermittent destratification was installed after several other physico-chemical and physical in-lake therapy measures (phosphorus immobilization, permanent destratification) had been tested without great success. If an aerobic sediment-water interface can be maintained, intermittent destratification removes cyanobacteria and prevents optimal development of other members of the photoautotrophic plankton. During growing seasons, increasing abundances of small-bodied herbivores (Bosmina) and Daphnia may have accounted for relatively low phytoplankton biomass as well. Intermittent destratification is a very fast-working in-lake measure and seems to be applicable even in relatively shallow lakes (< 15 m), in which permanent destratification seems to be risky.

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