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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.v39.i1.60
6 pages

Distribution of Unicellular Algae at the Surface of the Pelagic Zone of the Sea of Azov

N. M. Lyalyuk
Donetsk State University Donetsk, Ukraine
G. P. Lipnitskaya
Donetsk State University Donetsk, Ukraine


The species composition and quantitative indices of development of neuston and plankton were studied in the coastal zone of the Sea of Azov. A total of 20 species of algae belonging to three divisions was identified. In this case, 17 species were found in neuston, whereas 13 species were registered in plankton. The numbers of neuston algae were 2.9 times higher than those of plankton algae, whereas their biomass was 2.3 times higher than that of plankton algae. In neuston, Cyanophyta dominated in terms of their numbers and biomass. Chlorophyta were most diverse in their species composition. In plankton, the highest numbers and biomass were characteristic of green algae. They were represented by the largest number of species. Algae found both in plankton and in neuston may be considered as plankton components of the neuston biocenosis.

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