Supplementary data

	A	B
1	Supplementary data: fatty acid composition
2	Conditions	Sample number
3	water, C:N=8.8	1,2,3
4	water, C:N=50	4,5,6
5	water with 0.05 M NaCl, C:N=8.8	7,8,9
6	water with 0.05 M NaCl, C:N=50	10,11,12
7	1/3× seawater, C:N=8.8	13,14,15
8	1/3× seawater, C:N=50	16,17,18
9	seawater, C:N=8.8	19,20,21
10	seawater, C:N=50	22,23,24
11
12	Samples were collected when their carotenoids production reached highest level: samples in water were collcected after 72 hours, samples in seawater were collcected after 120 hours
13
14	Sample not used to analysis:
15	4	Hexadecanoic acid and 9-Hexadecanoic acid were not seperated
16	13	No useful peaks detected
17	23	No useful peaks detected
18	24	Hexadecanoic acid and 9-Hexadecanoic acid were not seperated
19
20	Analysis	Analysis was based on peaks with area >1%
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