Table 1. Taxonomic assignment of the best hits for clusters (OTUs) with a frequency higher than 1% in the pooled sample.

Cluster	Phylum	Class	Order	Family	Genus	Best hit(s)	Accession	Abundance (%)
Cluster6060	Proteobacteria	Gammaproteobacteria	Oceanospirillales	Halomonadaceae	Halomonas	Halomonas salifodinae strain BC7	NR_044263.1	52.28428333
						Halomonas saccharevitans strain AJ275	NR_044117.1
						Halomonas denitrificans strain M29	NR_042491.1
						Halomonas kenyensis strain AIR-2	NR_043299.1
						Halomonas campaniensis strain 5AG	NR_042157.1
						Halomonas desiderata strain FB2	NR_026274.1
Cluster8707	Proteobacteria	Gammaproteobacteria	Alteromonadales	Shewanellaceae	Shewanella	Shewanella haliotis strain DW01	NR_044134.1	14.16401667
						Shewanella algae strain OK-1	NR_028673.1
Cluster8392	Firmicutes	Clostridia	Clostridiales	Clostridiaceae	Clostridium	Clostridium perfringens strain 13	NR_074482.1	8.269458333
						Sarcina maxima strain DSM 316	NR_026147.1
						Sarcina ventriculi strain DSM 286	NR_026146.1
Cluster4535	Proteobacteria	Gammaproteobacteria	Enterobacteriales	Enterobacteriaceae	Citrobacter	Citrobacter freundii strain DSM 30039	NR_028894.1	1.730133333
						Raoultella terrigena strain 84	NR_037085.1
						Citrobacter werkmanii strain CDC 0876-58	NR_024862.1
						Citrobacter murliniae strain CDC 2970-59	NR_028688.1
						Citrobacter braakii strain 167	NR_028687.1
						Citrobacter gillenii strain CDC	NR_041697.1
Cluster8049	Proteobacteria	Betaproteobacteria	Burkholderiales	Comamonadaceae	Comamonas	Comamonas testosteroni CNB-2 strain CNB-1	NR_102841.1	1.00715
						Comamonas testosteroni strain KS 0043	NR_029161.1
Total								77.45504167