Fig. 6: Relative abundance mapping of MAGs for nitrogen metabolisms in the ETSP.

A Relative abundance mapping of MAGs carrying each denitrification gene across all ETSP metagenomes. MAGs are colored by phylum-level taxonomy, except for Proteobacteria, which is colored by class. B Relative abundance mapping of MAGs carrying each non-denitrification nitrogen cycling gene across all ETSP metagenomes. Black bars to the right of the graphs indicate ODZ depths (O2 < 3 μM). Additional graphs for ETNP and Arabian Sea metagenomes can be found in Supplementary Figs. S6 and S7, respectively.