Table 1.
Soil nitrogen levels in various Antarctic soils. (* Not determined)
| Inorganic N | Total Organic N | References | ||
|---|---|---|---|---|
| NO3−-N | NH4+-N | |||
| (µg g−1) | (µg g−1) | (ppm) | ||
| Ornithogenic Soils | ||||
| Marion Island | 0–130 | 101–664 | - | [18,19] |
| Signy Island | 90 | 1369 | ||
| S. Shetland Island | 18.8–35 | 140–400 | ||
| Ross Island/20–35 soil water | 0 | 6000 | ||
| Desert Soils | ||||
| Ross Desert | 0–120 | 6–40 | - | [15,16,17,18,19] |
| Ross Desert | 0–960 | 0–2.2 | ||
| Pensacola Mountains | <1–1250 | <1 | ||
| Pensacola Mountains | 0.7–6.4 | 0.3–1.1 | ||
| Victoria Valley | 2 | 1 | 0.003 | |
| Coalsack Bluff | 742 | 0.1 | 0.024 | |
| Barwick Valley | 1 | 0.8 | 0.004 | |
| Wheeler Valley | 7 | ND* | 0.024 | |
| Fellfield Soils | ||||
| Marion Island | 0 | 2 | - | [18,19] |
| Signy Island/10–20 soil water | 1.9–6 | 43,894 | ||
| Signy Island | 0.1 | 0.1 | ||
| Coastal Antarctica | 43,850 | 15–20 | ||
| Maritime Coastal Soils | ||||
| Penguin Rock, soils with penguin | 31.19 | 385.52 | ||
| Rakusa Point | 4.74 | 66.32 | ||
| Puchalski grave, tundra on slope | 1.62 | 23.6 | - | [21] |
| Jersak Hills, scree debris | 1.32 | 1.16 | ||
| Arctowski station, base soils | 5.25 | 60.43 | ||