Regularities of the distribution of macrozoobenthos communities in the conditions of the rivers of Central and Northern Altai as an indicator of the ecological state of water bodies

Nadezhda Khudyakova,Oksana Safonova,Olga Vozniychuk,A.D Nazarov

doi:10.1051/e3sconf/202127001030

Nadezhda Khudyakova, Oksana Safonova + Show 2 more

Open Access

https://doi.org/10.1051/e3sconf/202127001030

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Abstract

In modern conditions of Gorny Altai, with an increase in anthropogenic load on the ecosystems of the region, it becomes important to assess environmental pollution. The state of the environment monitoring is a topical direction of science. The work analyzes the distribution and structural features of macrozoobenthos communities in the rivers of Altai. Revealed 25 species of invertebrate aquatic organisms belonging to 4 types and 6 classes. Benthic communities of 12 different water bodies of the Northern and Central Altai have been analyzed. Analysis of the studied structure of groups based on Euclidean distances for the shares of species in communities showed that they can be divided into three classes depending on the dominant species in them. The scheme based on the Jaccard index made it possible to reveal the influence of environmental factors that determine the structure of macrozoobenthos communities in Altai rivers. It was revealed that the anthropogenic factor has an indirect effect on the structure of communities of aquatic organisms; therefore, the macrofauna of aquatic organisms can be used as a primary indicator of the state of aquatic ecosystems.

Highlights

Gorny Altai is one of the most beautiful regions of Russia; it is considered an ecologically clean area
The Altai rivers are heterogeneous in many parameters and the study of the distribution patterns of macrozoobenthos communities in them is of scientific interest
As a result of the study carried out in the water bodies of the Northern and Central Altai, we identified 25 species of hydrobionts belonging to 4 types and 6 classes

Summary

Introduction

Gorny Altai is one of the most beautiful regions of Russia; it is considered an ecologically clean area. In recent years, there has been an increase in anthropogenic, in particular recreational, tourist load on the region, which affects natural ecosystems. That is why in modern conditions the problems of environmental pollution are very important. Assessment and monitoring of the state of the environment is a topical direction of science. One of the important process is biological monitoring, which tracks changes in the states of populations of living organisms, organisms individually, and the species composition of biotopes and their prediction. To assess the state of the environment, the species of living organisms that are most sensitive to changes in environmental factors are used.

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