The results of the fisheries survey of the Oka River within the boundaries of the Moscow region
Abstract
The article provides brief information about the features of the hydrological and hydrobiological regimes of the Oka River within the boundaries of the Moscow Region, depending on the morphological structure of the river course and the character of the bottom substrates. The structure of the catches of the smooth and ring networks, as well as the fry net on different biotopes of the channel zone and the subordinate system of the Moscow sections of the Oka River in the long-term aspect is described. The structure of the ichthyocenosis of the medial and ripal zones of the river, as well as the reservoirs of its subordinate system, has been established. The current composition of the ichthyofauna and the occurrence of individual fish and fish-like species of the Oka River in the boundaries of the Moscow region are shown. The state of populations of rare invasive fish species and cyclostomes is briefly characterized. The question of the influence of individual natural and anthropogenic factors on the quantitative indicators of fish ichthyomass dynamics in the river channel zone depending on the season of the year and the features of the bottom relief is considered.
About the Authors
A. D. BykovRussian Federation
Moscow
Yu. A. Mitenkov
Russian Federation
Moscow
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Review
For citations:
Bykov A.D., Mitenkov Yu.A. The results of the fisheries survey of the Oka River within the boundaries of the Moscow region. Trudy VNIRO. 2018;171:123-140. (In Russ.)