Open AccessSPATIAL-TEMPORAL DYNAMICS OF BOTTOM COMMUNITIES OF THE VOLGUSHA RIVER
Author(s) -
Alina Igorevna Ivanova,
Natalia Vladimirovna Kuznetsova
Publication year - 2019
Publication title -
vestnik astrahanskogo gosudarstvennogo tehničeskogo universiteta. seriâ: rybnoe hozâjstvo
Language(s) - English
Resource type - Journals
eISSN - 2309-978X
pISSN - 2073-5529
DOI - 10.24143/2073-5529-2019-3-31-40
Subject(s) - drainage basin , river ecosystem , ecology , streams , substrate (aquarium) , geography , fauna , ecosystem , terrain , temporal scales , tributary , environmental science , biology , computer network , cartography , computer science
The article highlights the problem of using information on the environmental conditions of water bodies for planning and conducting conservation measures. To understand the processes occurring in aquatic ecosystems, a promising direction appears the study of the composition, structure and spatial-temporal organization of zoobenthos, which is a sensitive indicator of contamination of water bodies with biogenic and toxic substances. There has been carried out the study of the main characteristics of zoobenthic communities of the Volgusha - one of the small rivers of the Moscow region, which flows on the territory of the state natural reserve of regional significance “Volgusha Valley and Paramonovsky Ravine” in the Dmitrov district of the Moscow region. There have been presented the results of a hydrobiological research of the Volgusha River carried out in the open water period in 2017-2018. A physiographic description of the Volgusha basin has been given. The qualitative and quantitative composition of the Volgusha bentofauna has been studied. There were revealed 60 species of zoobenthos belonging to 34 families, 14 orders, 5 classes, 3 types. The most widely there was represented Class Insecta numbering 42 species. There were found nine species of molluscs, four species of leeches, five species of oligochaetas. There have been singled out four groups associated to the substrate in the composition of zoobenthos: featurefile, litereally, pagefile and psammodiini. The spatial heterogeneity of hydrological and hydrochemical conditions throughout the Volgusha River caused by the terrain determines structural differences of zoobenthos, its composition and quantitative development, that is why it can serve as an indicator of water quality in different sectors of the river. There have been revealed evident seasonal changes in the composition of zoobenthos of the Volgusha River during the year and marked out zones of maximal anthropogenic interference.