Table 8. Stable carbon, nitrogen, and sulfur isotopic compositions of animal tissues of organisms collected from CO and CH Sites in the SSF.
| Sampling Site | Fauna | Organ | δ13C | n | δ15N | n | δ34S | n |
|---|---|---|---|---|---|---|---|---|
| (‰) | (‰) | (‰) | ||||||
| CO Site 2 | Calyptogena mariana | Gill | −35.3 ± 0.7 | 3 | +2.6 ± 1.4 | 3 | −8.8 ± 0.8 | 3 |
| Foot | −32.3 ± 0.4 | 3 | +5.0 ± 0.6 | 3 | −3.6, −8.8 | 2 | ||
| Mantle | −32.6 ± 0.5 | 3 | +3.4 ± 3.1 | 3 | +0.6 ± 3.2 | 3 | ||
| Adductor | −32.8 ± 1.2 | 3 | +5.5 ± 1.3 | 3 | −10.1, -7.9 | 2 | ||
| frenulate tubeworm | Bulk | −22.2, −20.6 | 2 | +4.4, +2.1 | 3 | −10.5, −10.5 | 2 | |
| Tube | −21.6 | 1 | +1.5 | 1 | −9.0 | 1 | ||
| lumbrinerid polychaete | Bulk | −26.1 | 1 | +4.9 | 1 | +19.8 | 1 | |
| amphipod | Bulk | −24.6 ± 1.0 | 3 | +7.7 ± 3.0 | 3 | +17.6, +15.5 | 2 | |
| nematode | Bulk | −25.3 | 1 | +10.4 | 1 | n.a. | ||
| CO Site 4 | Calyptogena mariana | Gill | −35.1 ± 1.9 | 3 | +3.4 ± 1.0 | 3 | −9.2 ± 1.7 | 3 |
| Foot | −33.2 ± 0.6 | 3 | +6.0 ± 2.0 | 3 | −7.1, −7.0 | 2 | ||
| Mantle | −33.1 ± 0.5 | 3 | +6.2 ± 0.9 | 3 | −5.3, −2.0 | 2 | ||
| Adductor | −32.5 ± 0.6 | 3 | +7.4 ± 0.9 | 3 | −8.8, −9.0 | 2 | ||
| nautiliniellid polychaete | Bulk | −33.4 ± 0.8 | 9 | +11.7 ± 0.7 | 9 | −9.0 ± 1.1 | 6 | |
| maldanid polychaete | Bulk | −31.0 ± 0.2 | 3 | +10.8 ± 0.6 | 3 | +2.2 ± 1.0 | 3 | |
| eunicid polychaete | Bulk | −31.7 | 1 | +12.4 | 1 | +17.2 | 1 | |
| Bayerius cf. arnoldi | Bulk | −32.3 ± 0.9 | 3 | +8.8 ± 0.8 | 3 | +0.5, +0.2 | 2 | |
| amphipod | Bulk | −31.6 ± 1.5 | 3 | +10.7 ± 1.6 | 3 | +2.8 | 1 | |
| isopod | Bulk | −33.3 ± 0.9 | 3 | +7.1 ± 0.1 | 3 | +1.9 | 1 | |
| anthozoan | Bulk | −29.2 ± 0.9 | 4 | +9.2 ± 0.5 | 4 | −3.9 ± 1.2 | 4 | |
| CO Site 7 | Calyptogena mariana | Gill | −34.5 ± 0.4 | 3 | +3.9 ± 0.1 | 3 | −13.9 ± 3.0 | 3 |
| Foot | −33.3 ± 0.6 | 2 | +6.9 ± 0.4 | 3 | −9.9 | 1 | ||
| Mantle | −33.5 ± 0.4 | 3 | +6.0 ± 1.5 | 3 | −7.1 ± 7.6 | 3 | ||
| Adductor | −33.4 ± 0.5 | 3 | +7.5 ± 0.5 | 3 | −14.6 ± 0.7 | 3 | ||
| CH Site 1 | Phyllochaetepterus polychaete | Bulk | −25.3 | 1 | −1.3 | 1 | +21.6 | 1 |
| polynoid polychaete | Bulk | −25.7, −25.4 | 2 | +6.8, +5.9 | 2 | +17.7, +10.8 | 2 | |
| lumbrinerid polychaete | Bulk | −28.7, −28.0 | 2 | +5.4, +1.9 | 2 | +17.3, +18.3 | 2 | |
| eunicid polychaete | Bulk | −24.6 | 1 | +5.6 | 1 | n.a. | ||
| Bayerius cf. arnoldi | Bulk | −25.0 | 1 | +6.3 | 1 | n.a. | ||
| amphipod | Bulk | −26.1 ± 2.8 | 3 | +5.1 ± 1.8 | 3 | +14.7 ± 2.3 | 3 | |
| leptostracan | Bulk | −24.5 | 1 | +7.2 | 1 | n.a. | ||
| anthozoan | Bulk | −22.3 | 1 | +0.3 | 1 | +21.2 | 1 | |
| nematode | Bulk | −23.5 | 1 | +8.0 | 1 | n.a. | ||
| CH Site 3 | Phyllochaetepterus polychaete | Bulk | −25.6 | 1 | +1.7 | 1 | +20.5 | 1 |
n.a.; not analyzed