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. 2023 Sep 6;107(21):6717–6730. doi: 10.1007/s00253-023-12752-5

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© The Author(s) 2023

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Fig. 4 — Histograms of the distribution of NH₃ tolerant and sensitive taxa within 12 phyla that contribute important functions to anaerobic digestion. Dotted lines represent threshold values for sensitivity against, and preference for, NH₃ based on null model testing. Taxa below B_N-Ammonia 0.24 are sensitive, while taxa above 0.88 are enriched with NH₃. Taxa above B_N-Ammonia 0.24 were considered tolerant