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Fig. 2


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Box-and-whisker plot showing the number of macrophyte taxa. *An asterisk above a whisker denotes significant differences between the rivers. Abbreviations: a − the Bolina River, b − the Centuria River, c − the Mitręga River, d − the Mleczna River, e − the Dziechcinka River, f − the Vistula River, g − the Korzenica River, h − the Wiercica River.

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