Library Subscription: Guest
Begell Digital Portal Begell Digital Library eBooks Journals References & Proceedings Research Collections
Hydrobiological Journal

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

Hydrobiological Journal

DOI: 10.1615/HydrobJ.v40.i1.110
9 pages

Activity of the Sun and Water “Bloom”

L. A. Sirenko
Institute of Hydrobiology, National Academy of Sciences of Ukraine, 12, Pr. Geroyev Stalingrada, 04210 Kiev, Ukraine


It has been analyzed the dynamics of phytoplankton development in three water bodies of the Dnieper tandem storage reservoir system for the period of 30 years. The comparisons showed that the intensity of water ‘bloom’ caused by blue-green algae (cyanoprokaryotes) was evidently higher, and this process was prolonged, in the years of lower solar activity. The ‘bloom’ intensity decreases in years of high solar activity (11-year cycle). Such effect is connected with the peculiarities in the structure and photochemical activity of pigment phothosystems in different taxonomic groups of algae.