Table 3. Detailed information related to the OTU differentially abundant between individuals belonging to group 1 and group 2.

N° OTU	mean abundance in group 1	mean abundance in group 2	Best hit on Blast
36	0.00484	0.037926	Flavobacterium psychrophilum
122	0.000778	0.010066	Pseudomonas cedrina subsp. Fulgida
37	0.000471	0.006593	Flavobacterium terrigena
68	0.0014	0.006629	Methylocella palustris
128	0	0.004734	Psychrobacter faecalis
69	0.000531	0.004942	Pseudorhodobacter ferrugineus
190	0	0.004394	Hyphomicrobium sulfonivorans
139	0.000153	0.003833	Lysobacter capsici
70	0.000831	0.0043	Methylobacterium salsuginis
29	0.000028	0.003344	Methylobacterium adhaesivum
67	0.000518	0.003772	Rhodobacter blasticus
127	0.000218	0.003382	Acinetobacter haemolyticus
21	0.000117	0.002977	Flavobacterium aquatile
74	0	0.002743	Paracoccus yeei
52	0.000331	0.002911	Sphingopyxis alaskensis
126	0.000969	0.003524	Pseudomonas xanthomarina
89	0	0.002528	Sphingomonas dokdonensis
27	0.000113	0.001814	Sphingopyxis chilensis
63	0.00071	0.002374	Paracoccus haeundaensis
141	0.000156	0.001642	Acinetobacter johnsonii
84	0.000079	0.001484	Pseudorhodobacter ferrugineus
38	0.000063	0.001334	Sejongia jeonii
138	0.000014	0.001205	Acinetobacter junii
192	0	0.001099	Methylovirgula ligni
81	0.000248	0.00132	Ruegeria atlantica
8	0	0.001062	Methylosinus sporium
6	0	0.001033	Methylovirgula ligni
12	0	0.001029	Pseudorhodoferax soli
86	0.000282	0.00131	Methylobacterium rhodesianum
32	0.000125	0.001139	Methylobacterium zatmanii
22	0.000011	0.000871	Flavobacterium psychrophilum
107	0.000082	0.000932	Rhodobacter capsulatus
43	0.000258	0.001098	Flavobacterium aquatile
94	0.000073	0.000886	Rhodobacter sphaeroides
189	0.000043	0.000809	Methylomicrobium album
78	0.000047	0.000761	Rhodobacter capsulatus
91	0.000226	0.000929	Caulobacter leidyia
46	0.00002	0.000712	Flavobacterium psychrolimnae
101	0.00042	0.001111	Brevundimonas variabilis
154	0.00005	0.000728	Methylobacterium adhaesivum
82	0.000156	0.000815	Amaricoccus kaplicensis
54	0.000176	0.000782	Methylopila capsulata
19	0.000154	0.000756	Brevundimonas variabilis
71	0	0.00054	Sphingomonas faeni
182	0.000046	0.000579	Flavobacterium aquatile
90	0.000282	0.000812	Methylobacterium adhaesivum
44	0.000094	0.000609	Flavobacterium psychrophilum
143	0	0.000513	Dokdonella koreensis
112	0	0.000511	Sphingomonas sanguinis
97	0	0.00049	Hyphomicrobium facile subsp. Tolerans
105	0	0.000359	Paracoccus haeundaensis
137	0	0.000339	Acinetobacter johnsonii
75	0.000558	0	Pseudochrobactrum kiredjianiae
50	0.889343	0.677999	Methylobacterium rhodesianum

Differentially abundancy were calculated by using Metastats (using a FDR correction, p<0.01).