Open Access

Fig. 3


Download original image

Values of rarefied species richness with standard deviation (sample rarefaction with Mao Tau estimation) for groups of sites differed in terms of biocoenotic type (IV − a, b; V − c, d; VI − e, f), method of quality assessment (BMWPpl and MMI) and values of environmental quality (white circles − low, triangles − moderate, black circles − high). Values of fit accuracy of logarithmic regression curves are presented as R2. Differences in richness between sites with moderate and extreme values presented on plots (a)–(d) are statistically significant (Kolmogorov–Smirnov's test).

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.