Zooplankton community structure in mouth areas of different rivers (tributaries of the lowland Cheboksary Reservoir, European Russia)

Main features of the structural organization of zooplankton communities are assessed for different morphological types of mouth areas found in tributaries of a lowland reservoir. It is shown that a river mouth with a distinguished delta is characterized by the highest species richness and diversity...

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Bibliographic Details
Published in:IOP conference series. Earth and environmental science 2021-08, Vol.834 (1), p.12063
Main Authors: Zhikharev, V S, Gavrilko, D E, Shurganova, G V
Format: Article
Language:English
Subjects:
Community structure
Crustaceans
Dominant species
Heterogeneity
Plankton
Reservoirs
River mouth
Rivers
Species composition
Species diversity
Species richness
Statistical analysis
Tributaries
Zooplankton
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Summary:Main features of the structural organization of zooplankton communities are assessed for different morphological types of mouth areas found in tributaries of a lowland reservoir. It is shown that a river mouth with a distinguished delta is characterized by the highest species richness and diversity of all studied mouth types in both the free-flowing part of the stream and in the reservoir zone. In the transitional zone between the river and the reservoir, no statistically significant differences between zooplankton community structures of different types of river mouths were found, which can be explained by high heterogeneity of zooplankton communities in these zones, substantial shift in the dominant species composition, and higher quantitative development of zooplankton. The shift between dominance of various species in different river mouths was not uniform, but had a common direction – from the dominance of riverine rotifers to lacustrine crustacean species.
ISSN:1755-1307
1755-1315
DOI:10.1088/1755-1315/834/1/012063