In the Xianbei seamount region, as the depth increased, the cumulative relative abundance of Alphaproteobacteria or Cyanobacteria ASVs showed a decreasing trend, whereas for other taxonomic groups, such as Gammaproteobacteria, Thermoproteota, SAR324 clade, and Marinimicrobia (SAR406 clade), an increasing trend with depth was observed (Fig. 2b ,Table S2 ).
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