Appendix 2

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Plots of the diatoms metrics along the environmental gradients. The diatom metrics are relative abundances of the diatoms ecological guilds and life forms, in %. Environmental gradients: temperature (T, in °C); dissolved oxygen (DO, in mg∙L−1); dissolved organic carbon (DOC, in mg∙L−1); five-day biological oxygen demand (BOD5, in mg∙L−1).
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