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. 2021 Dec 16;812:152412. doi: 10.1016/j.scitotenv.2021.152412

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© 2021 Published by Elsevier B.V.

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Fig. 7 — Annual trend of the heterotrophic prokaryotes abundance (HPA) in 2014, 2015, 2020, and 2021. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)