Table 2.

Relative contribution (%) of the abundant OTUs (≥1% of the total reads in at least one of the samples) retrieved at the time of inoculum (day 0) and during the different algal growth phases (days 6, 24, and 42), as revealed by ION torrent sequencing data

OTU #	Closest relative (RDP classifier)	Day 0	Day 6	Day 24	Day 42
1	Dinoroseobacter	18.1	29.2	19.0	22.5
2	Oceanicaulis	18.5	14.3	4.4	13.9
4	Labrenzia	4.3	5.1	16.9	16.7
6	Fabibacter	6.8	0.6	21.9	4.8
7	Roseovarius	11.0	11.2	4.1	3.6
9	Oceanicaulis	5.3	7.7	3.4	6.5
11	Roseovarius	5.3	5.9	2.3	1.7
13	Oceanicaulis	3.1	2.2	0.9	2.2
16	Dietzia	0.0	0.0	0.7	1.5
18	Oceanicaulis	2.3	2.1	0.8	1.8
20	Oceanicaulis	2.1	1.4	0.5	1.4
21	Flammeovirgaceae	0.1	0.0	1.6	1.5
33	Rhodobacteraceae	1.3	1.5	0.9	0.3
35	Balneola	2.0	0.7	0.7	0.2