Table 4. Number of OTUs assigned to planktonic taxa.

Planktonic taxa	DSE1	DSE2	DSE3	DSE4	DSE5	DSE6
Dinophyceae	5	5	30	5	14	10
Plantae	12	14	34	20	33	47
Haptophyta	4	2	17	10	14	11
Picobiliphyta	7	8	16	6	18	10
Radiolaria	8	15	15	12	24	18
Bacillariophyta	26	19	45	23	41	59
Bolidophyceae	0	3	1	0	1	0
Dictyochophyceae	1	4	3	0	2	4
Pelagophyceae	1	0	3	0	3	2
Phaeophyceae	3	2	2	2	4	4
Phaeothamniophyceae	1	2	0	0	1	0
Pinguiophyceae	0	0	0	0	0	1
Raphidophyceae	0	0	2	0	0	1
Total phototrophic taxa	68	74	168	78	155	167
Environmental OTUs:
Marine plankton*	274	228	395	174	288	272
Marine sediment only	147	134	75	92	64	105
Freshwater & soil	44	37	29	21	27	37
Putative planktonic OTUs	342	302	563	252	443	439
Percentage of all assigned OTUs	30%	28%	57%	37%	49%	35%

*including the OTUs found in the sediment, but without the planktonic taxa listed above.