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Hydrobiological Journal
SJR: 0.227 SNIP: 0.575 CiteScore™: 0.24

ISSN Print: 0018-8166
ISSN Online: 1943-5991

Hydrobiological Journal

DOI: 10.1615/HydrobJ.v47.i3.90
pages 75-90

Development of Mass Cyanobacteria Species under Heavy Metals Pollution

Yu. M. Poliak
Research Center of Environmental Safety, Russian Academy of Sciences, St. Petersburg, Russia
T. B. Zaytseva
Saint-Petersburg Scientific-Research Center of Ecological Safety Russian Academy of Sciences Saint-Petersburg, Russian
V. N. Petrova
Research Center of Environmental Safety, Russian Academy of Sciences, St. Petersburg, Russia
N. G. Medvedeva
Saint-Petersburg Scientific-Research Center of Ecological Safety Russian Academy of Sciences Saint-Petersburg, Russian

ABSTRACT

The effect of copper, nickel and zinc on growth, photosynthesis and secondary metabolites’ production by the bloom-forming cyanobacteria Microcystis aeruginosa, Oscillatoria agardhii, Anabaena variabilis and Aphanizomenon flos-aquae was investigated. At concentration range 10−7−10−5 mole/l heavy metals can eliminate some Cyanobacteria, inhibit or stimulate growth of others. They are able to promote excretion of various metabolites, including proteins, extracellular polysaccharides, toxins and odors. Elevated excretion of exometabolites negatively effects water quality in the aquatic ecosystems.


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