Table 5.

Diversity estimates from 16S rRNA amplicon libraries of diffuse flow vent samples collected at 9°N East Pacific Rise (EPR) and Guaymas Basin (Guay) hydrothermal vent sites.

Group	#seqsa	Sobsb	Chao I	Chao I lcic	Chao I hcid	np shannon	Inverse simpson	Invsimpson lci	Invsimpson hci	simpson evenness
BACTERIA DIFFUSE FLOW VENT SPECIFIC OTUs
EPR.4470	6810	305	334	317	377	4.24	25.19	24.05	26.44	0.083
EPR.4472	6380	275	301	287	328	4.00	23.05	22.03	24.16	0.084
EPR.4473	8080	303	356	330	408	4.17	24.39	23.27	25.63	0.081
EPR.4474	867	145	188	165	239	4.55	59.60	52.58	68.78	0.411
Guay.4476	653	77	104	88	145	3.33	13.17	11.74	14.99	0.171
Guay.4477	72	25	41	29	83	3.07	13.24	9.58	21.47	0.530
Guay.4478	1697	105	120	111	148	3.57	18.38	17.06	19.92	0.175
Guay.4479	387	57	78	64	117	3.45	20.03	17.68	23.11	0.351
Guay.4480	143	32	38	34	59	3.18	16.95	13.78	22.02	0.530
Guay.4481	23	13	18	14	41	2.89	16.87	10.26	47.45	1.297
Group	#seqs	Sobs	Chao I	Chao I lci	Chao I hci	np shannon	Inverse simpson	Invsimpson lci	invsimpson hci	simpson evenness
ARCHAEA DIFFUSE FLOW VENT SPECIFIC OTUs
EPR.4470	2043	220	224	221	236	4.79e	41.14	35.74	48.45	0.187
EPR.4472	908	168	198	181	236	4.77	76.26	67.78	87.15	0.454
EPR.4473	1289	68	118	86	204	2.19	3.27	3.00	3.58	0.048
EPR.4474	767	86	105	93	136	3.21	8.04	7.02	9.41	0.094
Guay.4476	183	31	51	37	97	2.54	5.73	4.74	7.24	0.185
Guay.4477	102	19	31	22	73	2.21	4.18	3.19	6.06	0.220
Guay.4478	416	49	73	57	124	3.04	11.23	9.81	13.15	0.229
Guay.4479	1553	55	63	57	86	1.85	2.42	2.26	2.60	0.044
Guay.4480	60	20	38	24	95	2.80	9.37	6.62	15.97	0.468
Guay.4481	953	49	56	51	75	1.55	1.87	1.74	2.02	0.038

Sequences derived after subtraction of off-axis OTUs.

^a#seqs, number of 16S rDNA amplicon sequences.

^bSobs, number of observed species.

^cLow confidence interval.

^dHigh confidence interval.

^eBold values indicate sites where estimated diversity of Archaea exceed that of Bacteria.