Table 1.
Comparison of maximal concentrations and fluxes of H2 reported in microbial mats. Listed in chronological order.
| Sample origin and mat type | Salinity (ppt) | Maximal H2 concentration (μmol L-1) |
Maximal H2 production (nmol H2 cm-2 h-1) |
Source | ||
|---|---|---|---|---|---|---|
| -molybdate | +molybdate | -molybdate | + molybdate | |||
| Hamelin Pool, Australia |
Skyring et al. (1989), estimated from Figure 1 |
|||||
| Microcoleus mat (smooth) | 50–70 | – | – | 3- | 17.9 | |
| Lyngbya mat (tufted) | 50–70 | – | – | <0.1 | 0.58 | |
| Entophysalis mat (pustular) | 50–70 | – | – | 5.8 | 4.8 | |
| Spencer Gulf, Australia |
Skyring et al. (1989), Table 1 |
|||||
| Microcoleus mat | 45 | – | – | 0.125 | 36.3 | |
| Guerrero Negro, Mexico |
Hoehler et al. (2001), Figures 1 and 2, Table 1 |
|||||
| Lyngbya mat (intertidal) | 95 | 50 | – | 62.9 | – | |
| Microcoleus mat (subtidal) | 95 | <0.5 | – | 0.35 | – | |
| Elkhorn Slough, USA |
Burow et al. (2012), estimated from Supplementary Figure S1 |
|||||
| Microcoleus mat | 35 | – | – | 49.5 | – | |
| Guerrero Negro, Mexico |
Hoffmann et al. (2015), estimated from Figures 3 and 4B |
|||||
| Leptolyngbya / Microcoleus mat (low tide) | 40 | ~5 | ~20 | 11 | – | |
| Microcoleus mat (mid tide) | 40 | ~15 | – | 6.8 | – | |
| Microcoleus / Calothrix mat (high tide) | 40 | ~20 | – | 0.3 | – | |
| Aggersund, Denmark | This study | |||||
| Microcoleus mat | 25 | 25–40 | 70 | 16.3 | 86.5 | |
| Saline des Giraud, France | This study | |||||
| Microcoleus mat | 90 | 47 | – | 23.8 | – | |