Table 1.
Molar C:N:P ratios of soils following 6 years of six resource additions in Fryxell lake basin of the Taylor Valleys in Antarctica.
| C:N:P | C:N | C:P | N:P | |
|---|---|---|---|---|
| U | 182:7:1 | 28.2 ± 2.69 ab | 182 ± 29.7 ab | 6.85 ± 1.01 bcd |
| W | 247:8:1 | 31.6 ± 5.76 ab | 247 ± 45.4 a | 8.28 ± 0.768 bcd |
| C | 218:8:1 | 30.0 ± 4.82 ab | 218 ± 21.0 ab | 8.43 ± 1.31 bc |
| N | 223:16:1 | 14.4 ± 1.17 b | 223 ± 30.8 a | 15.5 ± 1.89 a |
| P | 90:3:1 | 33.0 ± 49 a | 90.3 ± 4.65 c | 3.02 ± 0.400 d |
| CN | 165:12:1 | 14.4 ± 1.68 b | 165 ± 26.5 abc | 11.9 ± 1.85 ab |
| CP | 108:3:1 | 37.8 ± 6.00 a | 108 ± 5.93 bc | 3.47 ± 0.675 cd |
Treatments abbreviations include: un-amended control (U); water only (W); C as mannitol and water (C); N as equal concentrations NH4+ and NO3− with water (N); P as Na3PO4 and water (P); C, N, and water (CN); C, P, with water (CP). Data are mean (±SEM, n = 8) with different letters indicating differences among treatments (P < 0.05) from ANOVA and Tukey’s HSD.