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. 2013 Jul 15;110(31):12565–12570. doi: 10.1073/pnas.1217514110

Table 1.

Relative abundance and isotopic data for fatty acids from the NPSG

Deep, >0.2 μm
Surface, 0.2–0.5 μm
Surface, >0.5 μm
Compound Fraction δ13C ± 1σ 14C* ± 1σ Fraction δ13C ± 1σ 14C* ± 1σ Fraction δ13C ± 1σ 14C* ± 1σ
14:0 0.18 −18.3 ± 0.2 114 ± 76 0.17 −201 ± 261 0.22 −25.3 ± 0.2
i-15:0 0.13 −22.7 ± 0.3 48 ± 14
16:1 0.29 −21.7 ± 0.2 66 ± 47 0.13 −22.4 ± 0.2 0.51 −23.8 ± 0.1
16:0 1.00 −18.8 ± 0.2 57 ± 13 1.00 −19.0 ± 0.2 86 ± 28 1.00 −23.6 ± 0.2 51 ± 5
17:1 0.15 −25.0 ± 0.2 0.12 −22.8 ± 0.7
17:0 0.09 −21.5 ± 0.2 57 ± 74 0.07 86 ± 112 0.03
18:1 0.52 −22.7 ± 0.2 58 ± 25 0.11 −23.3 ± 0.3 −2 ± 58 0.14 −22.8 ± 1.2 52 ± 10
18:0 1.48 −18.5 ± 0.2 80 ± 11 1.78 −18.8 ± 0.2 0.05 −23.7 ± 1.5 93 ± 23
20:5 0.27 −25.7 ± 0.9
22:0 0.03 −201 ± 24

For details of isotopic measurements and background corrections, as well as AMS facility sample identifiers, see expanded Table S1, and Figs. S1 and S2.

*

Final value after all blank corrections (SI Text 1).

No value indicates insufficient abundance for measurement.

Samples in italics were eliminated due to small size and/or unexplained contaminants.