Tolerance of hydromacrophytes to active reaction, mineralization and water hardness in natural and man-made water bodies of the West Siberian plain

In 2015, the researchers held field studies of 98 water bodies of the West Siberian Plain and held a simultaneous study of the aquatic macrophyte biodiversity and water parameters in aquatic ecotopes of Tyumen Region (including Khanty-Mansiysk Autonomous Area) and Omsk Region, covering the territory from 54°20′ N to 61°40′ N and from 63º30′ E to 74º50′ E. The work was aimed at improving the system of phytoindication of the water qualitative condition based on the data on the ecological tolerance of aquatic macrophytes belonging to different systematic groups. In total, the researchers identified 138 species of macroscopic aquatic plants belonging to 72 genera, 46 families, 8 groups, including 1 species of Rhodophyta, 7 of Charophyta, 31 f Chlorophyta, 5 of Xanthophyta, 12 of Bryophyta, 1 of Equisetophyta, 2 of Polypodiophyta, 79 of Magnoliophyta. For these species, рН, mineralization and water hardness ranges (and individual values) were given within the studied aquatic ecotopes located in the West Siberian Plain...