Fig. 1: Relative abundance of 16S rRNA gene amplicon sequence variants (ASVs).

The barchart depicts the taxonomic assignment of all ASVs annotated at the level of genera with 1% relative abundance threshold. Samples are grouped based on the properties of environment sampled, such as: background, plumes of different hydothermal sites such as: Niua North and South, Niuatahi and Maka and rising plume of Niuatahi and Maka. The ASVs were analyzed via a DADA2 pipeline [30].