Composition and quantitative characteristics of periphyton microalgae in coastal waters near Vladivostok city (Russia)
Begun A.A.1, Ryabushko L.I.2, Zvyagintsev A.Yu.1- 1A.V. Zhirmunsky Institute of Marine Biology, Far East Branch of Russian Academy of Sciences,
- 17, Palchevsky St., 690041 Vladivostok, Russia
- 2Kovalevsky Institute of Biology of the Southern Seas, National Academy of Sciences of Ukraine,
- 2, Nakhimov Av., 99011 Sevastopol, Ukraine
A comparative analysis of species and quantitative composition of periphyton microalgae in two bays of the Japan Sea in a summer-autumn period was done. The extremely-eutrophic Gold Horn Bay and the temperately-eutrophic Sukhoputnaya Bay were investigated. Seventy-three species and infraspecific taxa of algae belonging to Bacillariophyta (66 species and infraspecific taxa), Dinophyta (5) and Chrysophyta (2) were studied; from them 48 taxa – in Gold Horn Bay, 66 – in Sukhoputnaya Bay. In an extremely-eutrophic basin the density of microalgae ranged 0.1 to 19.4 mln cells·m-2 and biomass – 0.18 to 9.6 mg·m-2; the indexes of Shannon (H) and of Pielou (e) values were H = 1.71 and e = 1.76 for diatoms; in temperately-eutrophic basin – from 0.6 to 23.9 mln cells·m-2, biomass – from 1.96 to 49.2 mln cells·m-2; H = 0.41 and e = 0.51.
Keywords: microalgae, diatoms, periphyton, eutrophication
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