Features of Zoobenthos Long-Term Dynamics in Regulated Area of Ob River

The abundance, biomass and taxonomic structure of dominant zoobenthos species in Novosibirsk reservoir have been analyzed for the entire period of the reservoir existence. The formation of the bottom zoocenoses has been divided into four major stages. Despite significant differences in the dominant...

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Bibliographic Details
Main Author: Liubov V. Yanygina
Format: Article in Journal/Newspaper
Language:English
Russian
Published: Siberian Federal University 2016
Subjects:
Online Access:https://doaj.org/article/b7e01c90f47d4d2fa0b8fb2049adcb57
Description
Summary:The abundance, biomass and taxonomic structure of dominant zoobenthos species in Novosibirsk reservoir have been analyzed for the entire period of the reservoir existence. The formation of the bottom zoocenoses has been divided into four major stages. Despite significant differences in the dominant species composition and total biomass between the stages, the biomass of zoobenthos without shellfish had similar values (about 2,5 g/m2) over the last 50 years. In the last two decades, the dynamics of the total benthos biomass was determined by invasive gastropods Viviparus viviparus (Gastropoda, Viviparidae)