Table 3. Concentrations of phenolic substances in low-salinity populations within the Severn River, Maryland (USA) after four weeks of Free Ocean Carbon Enrichment in June-July 2011.
| Conditions | Seawater carbonate chemistry | |||
| Distance from injector | 500cm | 100cm | 40cm | 5cm |
| Temperature (C) | 28.3 | 28.3 | 28.3 | 28.3 |
| Salinity | 4.3 | 4.3 | 4.3 | 4.3 |
| pH | 8.34±0.01 | 8.26±0.02 | 7.82±0.04 | 7.32±0.06 |
| pCO2 (µatm) | 243±9 | 295±13 | 948±89 | 3465±527 |
| TA (µmol kg−1) | 1122±0.5 | 1122±0.5 | 1122±0.5 | 1122±0.5 |
Values are means +/− SE.
ND, not detected. Statistical analyses: 1, Student's t-test; 2, Mann-Whitney Rank Sum Test; P<0.05.