Table 1.
Comparison of bacterial and archaeal 16S gene abundances and BARs across four biogeochemical zones based on Kruskal-Wallis tests with Mann-Whitney post-hoc tests.
| Archaea | ||||
|---|---|---|---|---|
| Bioturbation zone | Sulfate zone | SMTZ | Methane zone | |
| Bioturbation zone | / | 0.30 | 0.38 | 0.13 |
| Sulfate zone | 0.30 | / | 0.17 | <0.05 |
| SMTZ | 0.38 | 0.17 | / | 0.69 |
| Methane zone | 0.13 | <0.05 | 0.69 | / |
| Bacteria | ||||
| Bioturbation zone | / | <0.01 | <0.01 | <0.01 |
| Sulfate zone | <0.01 | / | <0.05 | <0.01 |
| SMTZ | <0.01 | <0.05 | / | 0.38 |
| Methane zone | <0.01 | <0.01 | 0.38 | / |
| BAR | ||||
| Bioturbation zone | / | <0.01 | <0.01 | <0.01 |
| Sulfate zone | <0.01 | / | <0.01 | <0.005 |
| SMTZ | <0.01 | <0.01 | / | 0.09 |
| Methane zone | <0.01 | <0.005 | 0.09 | / |
Statistically significant p-values are shown in bold. Only stations from which all 4 biogeochemical zones were reached by coring were included (M24, M26, M27A, M29A, M1 (2009), and M5-2012).