Eutrophication of Varna Bay and Coastal Waters

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

Abstract

KLISAROVA, D. and D. GERDZHIKOV, 2015. Eutrophication of Varna Bay and coastal waters. Bulg. J. Agric. Sci., Supplement 1, 21: 86–89

The aim of the article is a study of the current state and growth of phytoplankton in the Bulgarian coastal waters and in the so-called „hot spots“ (Varna Bay) (2008–2010). The established average phytoplankton biomass in the coastal waters was 1.20 g/m3. Declining trend of average annual biomass and numbers from 2008 to 2010 was registered. Spring and autumn peaks typical for the post-eutrophication period were observed during the study.

Key words: Black Sea coast, post-eutrophication period, phytoplankton, numbers, biomass

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