TABLE 2.
Carbon isotope composition of microbial mat samples incubated after ex situ experiments to detect CO2 uptake in Fe(III)-oxide microbial mat communities from Norris Geyser Basin, YNP, October 2011
| Treatment | Samplea | δ13C value (‰) (σ) (n = 3) |
|---|---|---|
| CO2 NA, live mat | OSP_B | −16.1 (0.1) |
| CO2 NA, live mat | GRN_D | −13.8 (0.2) |
| 13CO2, live mat | OSP_B, assay 1 | 1,278 (61) |
| 13CO2, live mat | GRN_D, assay 1 | 1,267 (95) |
| 13CO2, live mat | GRN_D, assay 2 | 1,458 (54) |
| 13CO2, killed | OSP_B | 27.3 (2.0) |
| 13CO2, killed | GRN_D | 46.9 (3.7) |
a
OSP_B, One Hundred Springs Plain Spring site B; GRN_D, Grendel Spring site D.