Table 2.
DNRA rates and corresponding contributions to nitrate reduction in various ecosystems.
| Locations | DNRA rate (nmol N g−1 h−1) | DNRA (%) | References |
|---|---|---|---|
| North Atlantic Continental Shelf | 0.83–4.17 | <0.2 | 58 |
| River Cole Floodplain | 0.01–0.71 | 8 (7–10)a | 48 |
| Tuvem Mangrove | 27.1–49.6 | ≈99 | 59 |
| Colne River Estuary | 2.2–25.1 | 59 (44–74) | 33 |
| Cape Fear River Estuary | 0–1.89 | 2.56 (1.9–44.6) | 23 |
| Yangtze Estuary | 0.03–0.89 | 25.8 (3–45) | 29 |
| Shanghai urban river networks | 0–10.3 | 9 (0–50) | 4 |
| Santa Fe River Tributaries | 3.13–11.67 | NAb | 60 |
| Typical Chinese Paddy Soils | 0.03–0.54 | 0.54–17.63 | 7 |
| Yellow River Estuary | 0.10–3.29 | 8.68–42.07c | This study |
aThe percentage of DNRA in the total NO3 − reduction (denitrification + DNRA); the rest studies in the column show the percentage of DNRA in the NO3 − reduction (denitrification + DNRA + anammox). bNA represents no available data. cThe percentage of DNRA in the total nitrate reduction were estimated where rates of denitrification and anammox in some sites of the Yangtze Estuary were used to serve as data in this study.