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Fig. 4


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The relationships between Margalef diversity index in samples of macrobenthos from four biocoenotic types of watercourses, expressed as the best fitted multiplicative functions (green line − type III, blue line − type IV, red line − type V, orange line − type VI) and values of environmental quality measured by BMWPpl (black circles, solid lines) and MMI (white circles, dotted lines).

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