Phytoplankton Taxonomy in the Bulgarian Coastal Waters (2008–2010)

D. PETROVA and D. GERDZHIKOV
Institute of Fish Resources, BG – 9000 Varna, Bulgaria

Abstract

PETROVA, D. and D. GERDZHIKOV, 2015. Phytoplankton taxonomy in the Bulgarian coastal waters (2008–2010). Bulg. J. Agric. Sci., Supplement 1, 21: 90–99

The purpose of the study was to explore the dynamics of phytoplankton taxonomic composition in the Bulgarian coastal waters (2008–2010). In the analyzed total of 389 samples were identified 204 species and forms of microalgae distributed into 14 classes.The largest share belonged to classes Dinophyceae (40.20%) and Bacillariophyceae (31.86%). The remaining microalgae were distributed into the other 27.94%. The change in dominance between peridineas and diatoms during the hydro-biological seasons demonstrated well-defined cyclic recurrence. Throughout the study period the highest diversity of species was registered in June and September; the poorest species composition – in April, July and December.

Key words: Black sea, coastal waters, pelagial, phytoplankton, taxonomical composition, biodiversity

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