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. 2021 Nov 6;16(4):972–982. doi: 10.1038/s41396-021-01143-1

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© The Author(s) 2021

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 2 — Shannon index H′ (A) and Pielou’s evenness J’ (B). The Euler diagram (C) shows the number of unique and shared viral populations in each group of samples for both stations combined (stress = 0.0011%). Correspondence analyses based on relative abundances of viral populations compare all samples (D) and the subset of samples from low-oxygen environments (E). For panels D and E, the percentage of inertia explained by CA1 and CA2 are reported on the axes.