Abstract — The effect of elevation gradient on characteristics of aquatic communities has been studied in the basin of the Vangyr River, a third-order tributary of the Pechora River. The results show that the orders of amphibiotic insects characteristic of the rhithron zone prevail in the zoobenthos. The composition of hydrobiont fauna slightly changes with increasing distance from the upper reaches of the river to its mouth, but the main insect families remain the same. The structure of fish community largely depends on the position of river segments and lakes in the elevation gradient. Only one species—Arctic char, a probable glacial relict—has been found at the sources of the Vangyr. Fish communities in many mountain lakes are monospecific. The ichthyofauna becomes gradually enriched as the river mouth is approached: there appears another glacial relict (peled) and anadromous and semianadromous species (Atlantic salmon and Siberian whitefish).

中文翻译：

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海拔梯度对乌拉尔亚极地万吉尔河流域水生群落结构的影响

摘要——在伯朝拉河三级支流万吉尔河流域，研究了海拔梯度对水生群落特征的影响。结果表明，底栖动物中的两栖昆虫的目次要以菱形区为特征。随着河流上游到河口距离的增加，水生生物的组成略有变化，但主要昆虫科保持不变。鱼类群落结构很大程度上取决于河段和湖泊在海拔梯度中的位置。在 Vangyr 的源头只发现了一个物种——北极炭，一种可能的冰川遗迹。许多高山湖泊中的鱼类群落是单一物种。随着接近河口，鱼群逐渐丰富：