Table 1.
Geochemical characterization of ultra-basic pool, spring recharge, and brook from 2011 to 2012.
| WHC2A | Winter house brook | ||||
|---|---|---|---|---|---|
| 2011a | 2012 | 2011a | 2012 | ||
| Pool | Pool | Recharge | |||
| pH | 12.4 | 12.2 | 12.3 | 7.6 (±0.7) | 8.1 |
| Eh (mV) | −690 | – | – | +415 (±26) | – |
| H2 (μmol/L) | 585 (±25) | 471 (±60) | 476 (±50) | – | <d.l. |
| CO (μmol/L) | <d.l. | <d.l. | <d.l. | <d.l. | <d.l. |
| Sulfate (μmol/L) | 8.54 (±0.10) | 13.6 | 3.79 | 2.60 (±0.01) | 11.6 |
| Nitrate (μmol/L) | 0.242 (±0.005) | 2.29 | 1.24 | 3.06 (±0.05) | 3.16 |
| Phosphate (μmol/L) | 0.842 (±0.632) | 0.411 | 0.442 | 8.00 (±1.68) | 0.474 |
| Acetate (μmol/L) | – | 25.4 (±1.2) | 62.2 (±6.3) | – | 2.10 (±0.63) |
| Formate (μmol/L) | – | 1.11 (±0.44) | 28.9 (±1.11) | – | <d.l. |
| TIC (μmol/L) | 91.6 (±33.3) | 233 (±175) | 124 (±6) | 671 (±142) | 654 (±1) |
| δ13C TIC (‰) | −14.7 (±0.9) | −17.1 (±0.7) | −23.5 (±0.3) | −1.7 (±0.8) | −4.3 (±0.2) |
| DOC (μmol/L) | 33.3 (±16.7) | – | – | 38.3 (±16.7) | – |
| δ13C DOC (‰) | <d.l. | – | – | −27.1 (±0.6) | – |
| CH4 (μmol/L) | 20.0 (±0.6) | 26.2 (±1.2) | 25.6 (±0.6) | – | <d.l. |
| δ13C CH4 (‰) | −27.1 | −25.9 | −27.7 | – | – |
a
With the exception of nutrient concentrations all other 2011 was reported in Szponar et al. (2013). –, data are not available; <d.l., represents analytes there were below the detection limits of the analysis.