Table 3A.

Rare and dominant OTUs based on the dsrB gene.

Station	Depth (cm)	Total number of OTUs	Dominant OTUs	Abundance of dominant OTUs (%)	Rare OTUs	Abundance of rare OTUs (%)
S31	0–4	336	13	83.54	183	0.78
	8–12	240	12	84.23	121	0.49
	16–20	322	12	81.41	180	0.70
S33	0–4	336	8	86.84	191	0.77
	8–12	393	9	86.70	257	1.03
	16–20	456	10	85.30	287	1.23
	32–36	487	11	77.16	220	0.97
	46–50	413	12	77.48	180	0.78