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International Journal on Algae
SJR: 0.219 SNIP: 0.261 CiteScore™: 0.24

ISSN Print: 1521-9429
ISSN Online: 1940-4328

International Journal on Algae

DOI: 10.1615/InterJAlgae.v17.i2.40
pages 149-158

Taxonomical Structure, Ecological and Geographic Characteristics of Phytoplankton of the Tvertsa River (Russia)

A.B. Komissarov
Water Problems Institute of RAS, 3, Gubkina St., Moscow 119333, Russia
L. G. Korneva
I. D. Papanin Institute of the Biology of Inland Waters, Russian Academy of Sciences, 152742 Borok, Nekouzskiy Region, Yaroslavl Province. Russia


The results of the study of phytoplankton of the Tvertsa River, the biggest tributary of Ivankovo Reservoir, are presented. Species composition, taxonomic structure, and ecological and geographic characteristics of plankton algae are discussed. A total of 381 taxa below the rank of genus were identified. It was found that the Chlorophyta and Bacillariophyta complex with the addition of Euglenophyta and Cyanoprokaryota form the basis of species diversity. The similarity of different sections of the river in the species composition of algae, and dependence of species richness of algae from different taxonomic groups on the abiotic parameters were revealed. The hydrochemical characteristics of the river is given. Discrete continuity in changing plankton flora from the source to the mouth of the river due to hydrochemical factors was demonstrated.