The anthropogenic salinization of inland waters and its effect on freshwater biota are current environmental problems. This salinization leads to changes in the natural environment that are ecologically undesirable and not indifferent to humans. The widespread use of agents for road deicing has become one of the three most important factors of anthropogenic salinization of fresh water (along with agricultural activities and mining) in countries with temperate and cold climate. Today, the main components of these agents are Na and Ca chlorides—cheap and easily available natural materials. Their mixture with sand, used in deicing practice, is usually stored in bulk in special open-air areas all year round. The impact of atmospheric precipitation makes this mixture a source of salinization of the surrounding soils and waters. In 2015, 2016, and 2018, the salinity of inland waters was recorded near the long-term open storage of antiicing agents in Kaluga oblast. The anthropogenic nature of salinization of the investigated water bodies is established. The main components of salinization of water bodies in the study area are Na and Ca chlorides. The maximum degree of salinization in the studied conditions is 4‰ (ppm); the degree of salinity depends on the distance of the water body from the road-salt storage. The influence of anthropogenic salinity on dragonflies, mainly of the species Coenagrion puella L., is studied. It is found that the negative effect of high water salinity is expressed only in the slowdown of the development of individuals with a high level of fluctuating asymmetry, the number of which in the population is not determined by water salinity. High water salinity leads to changes only in the timing of emergence of imagoes with high FA. It is assumed that dragonflies as a mass object of freshwater biota are obviously not significantly exposed to anthropogenic salinization.

中文翻译：

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Odonata与内陆水域的人为盐碱化

内陆水的人为盐碱化及其对淡水生物群系的影响是当前的环境问题。这种盐碱化导致自然环境的变化，这在生态上是不利的，并且对人类无动于衷。在温带和寒冷气候国家，除冰剂的广泛使用已成为人为地将淡水盐化（以及农业活动和采矿）的三个最重要因素之一。如今，这些试剂的主要成分是氯化钠和氯化钙，它们是廉价且易于获得的天然材料。它们在除冰实践中使用的与沙子的混合物通常整年散装存放在特殊的露天区域。大气降水的影响使这种混合物成为周围土壤和水体盐碱化的来源。在2015年，2016年和2018年，在卡卢加州（Kaluga）的防暴剂长期露天储存附近记录了内陆水域的盐度。建立了被调查水体盐碱化的人为性质。研究区水体盐碱化的主要成分是氯化钠和氯化钙。在研究条件下的最大盐化度为4‰（ppm）。盐度取决于水体距道路盐库的距离。人为盐分对蜻蜓（主要是该物种）的影响 在研究条件下的最大盐化度为4‰（ppm）。盐度取决于水体距道路盐库的距离。人为盐分对蜻蜓（主要是该物种）的影响 在研究条件下的最大盐化度为4‰（ppm）。盐度取决于水体距道路盐库的距离。人为盐分对蜻蜓（主要是该物种）的影响研究了Coenagrion puella L.。已经发现，高水盐度的负面影响仅在高度波动的非对称性个体的发育减慢中得到表达，其中人口数量的多少不是由水盐度决定的。高盐度仅在FA含量高的成虫出现时才引起变化。假定蜻蜓作为淡水生物群的主要对象显然没有受到人为盐化的显着影响。