TABLE 4.
Depth-integrated and volume-specific NOx− and O2 transformation rates as estimated from numerical modeling of NOx− and O2 porewater profiles (n = 4 for Algae Light treatment and n = 3 for the remainder)
| Parameter | Result with treatmenta:
|
||
|---|---|---|---|
| No algae (n = 3) | Algae with light (n = 4) | Algae with darkness (n = 3) | |
| NOx− production (nmol cm−2 h−1) | 21.09 (1.88) | 5.82 (0.74) | 0 |
| Vol-specific NOx− production (nmol cm−3 h−1) | 285.9 (32.4) | 53.5 (5.2) | 0 |
| Aerobic NOx− consumption (nmol cm−2 h−1) | 0 | 4.05 (0.27) | 4.51 (0.58) |
| Anaerobic NOx− consumption (nmol cm−3 h−1) | 11.30 (0.70) | 3.58 (0.55) | 1.03 (0.16) |
| Vol-specific anaerobic NOx− consumption (nmol cm−3 h−1) | 91.87 (4.56) | 35.04 (11.1) | 41.43 (15.4) |
| O2 production (nmol cm−2 h−1) | −123 (22.4) | 132 (37.9) | −296.5 (43.0) |
| Vol-specific O2 consumption (nmol cm−3 h−1) | 1,066 (222) | ND | 4,318 (1,353) |
a
Standard errors of the means are given in parentheses. ND, not determined.