Table 4. Concentrations of phenolic substances in low-salinity populations within the Severn River, Maryland (USA) after six weeks of Free Ocean Carbon Enrichment in June-July 2011.
| Conditions | Seawater carbonate chemistry | ||
| Distance from injector | 500cm | 100cm | 40cm |
| Temperature (C) | 29.5 | 29.5 | 29.5 |
| Salinity | 4.9 | 4.9 | 4.9 |
| pH | 8.29±0.01 | 8.11±0.02 | 7.94±0.02 |
| pCO2 (µtm) | 279±2 | 439±20 | 729±5 |
| TA (µmol kg−1) | 1145±10 | 1145±10 | 1145±10 |
Values are means +/− SE.
ND, not detected. Statistical analyses: 3, Kruskal-Wallis One Way Analysis of Variance on Ranks with Tukey or Dunns multiple comparisons; 4, One-factor ANOVA with Holm-Sidak multiple comparisons. Letters indicate results of multiple pairwise comparisons tests, P<0.05.