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Abstract <p>The study investigated the daily dynamics of the invertebrate communities in the meadow grass stands along the pollution gradient of the Middle Ural Copper Smelter. In the most polluted area, the abundance of invertebrates in the upper part of the grass stand increases in the second half of the day, both in total (1.9 times) and in the groups of herbivores, both sucking (3.2 times) and chewing (2.2 times). This leads to a significant decrease in the similarity of the shape of the curves of circadian dynamics in the background and most polluted areas. In the other trophic groups considered, circadian changes are less pronounced. The obtained results confirm the hypothesis about modification of daily dynamics of grass stand invertebrates under industrial pollution. The most probable reasons for the changes are general degradation of invertebrate habitat, destabilization of temperature regime in it, as well as changes in the composition and structure of invertebrate communities themselves.</p>

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Daily Dynamics of Grass Stand Invertebrate Communities Exposed to Emissions from the Middle Ural Copper Smelter

  • 期刊论文

  • 发表日期：

    2025年2月1日

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  • A. V. Nesterkov

摘要

Abstract

The study investigated the daily dynamics of the invertebrate communities in the meadow grass stands along the pollution gradient of the Middle Ural Copper Smelter. In the most polluted area, the abundance of invertebrates in the upper part of the grass stand increases in the second half of the day, both in total (1.9 times) and in the groups of herbivores, both sucking (3.2 times) and chewing (2.2 times). This leads to a significant decrease in the similarity of the shape of the curves of circadian dynamics in the background and most polluted areas. In the other trophic groups considered, circadian changes are less pronounced. The obtained results confirm the hypothesis about modification of daily dynamics of grass stand invertebrates under industrial pollution. The most probable reasons for the changes are general degradation of invertebrate habitat, destabilization of temperature regime in it, as well as changes in the composition and structure of invertebrate communities themselves.