TABLE 1.
Mean and standard error of edaphic variables, enzyme activities and relative abundances of ectomycorrhizal (ECM) and saprotrophic (SAP) fungi variables across Nothofagus hosts in monodominant and mixed stands.
| Monodominant | Mixed | |||||
|---|---|---|---|---|---|---|
| N. antarctica | N. betuloides | N. pumilio | N. antarctica | N. betuloides | N. pumilio | |
| Soil moisture (%) | 21.81 ± 6.24 a | 37.96 ± 12.03 b | 38.32 ± 14.81 b | 27.67 ± 9.70 a | 53.56 ± 21.60 c | 39.55 ± 15.95 b |
| Soil pH | 4.77 ± 0.31 c | 3.24 ± 0.44 a | 4.30 ± 0.48 b | 4.92 ± 0.49 b | 3.54 ± 0.69 a | 4.53 ± 0.88 b |
| Total C (%) | 11.56 ± 3.65 a | 24.66 ± 13.11 b | 13.94 ± 6.55 a | 13.26 ± 6.13 a | 27.03 ± 17.04 b | 17.16 ± 7.93 a |
| Total N (%) | 0.96 ± 0.34 | 0.83 ± 0.22 | 0.94 ± 0.42 | 1.40 ± 0.28 c | 0.76 ± 0.22 a | 0.96 ± 0.32 b |
| C:N | 14.55 ± 13.27 a | 29.08 ± 11.52 b | 17.23 ± 8.49 a | 10.43 ± 7.01 a | 34.06 ± 16.85 c | 19.74 ± 10.07 b |
| Available N (ppm) | 42.34 ± 14.49 a | 74.49 ± 28.66 b | 40.82 ± 13.11 a | 45.56 ± 17.33 | 52.06 ± 13.87 | 49.48 ± 13.16 |
| Available P (ppm) | 39.61 ± 24.69 c | 15.19 ± 9.21 a | 24.84 ± 17.41 b | 19.17 ± 12.23 | 21.34 ± 14.31 | 28.86 ± 22.49 |
| Net N mineralization (μg N/g soil) | 80.73 ± 8.63 b | 168.06 ± 20.61 c | 44.39 ± 12.52 a | N/A | N/A | N/A |
| Microbial biomass N (μg N/g soil) | 125.59 ± 19.00 b | 45.66 ± 7.86 a | 210.97 ± 29.32 c | N/A | N/A | N/A |
| AGLU (nmol h−1 g−1) | 7.27 ± 6.27 c | 1.28 ± 0.49 a | 3.44 ± 2.05 b | 4.19 ± 3.47 | 2.81 ± 1.39 | 3.72 ± 1.69 |
| BGLU (nmol h−1 g−1) | 30.84 ± 28.57 b | 17.71 ± 15.95 a | 23.78 ± 19.22 ab | 27.04 ± 22.64 | 35.88 ± 24.94 | 31.55 ± 18.70 |
| GLUCU (nmol h−1 g−1) | 37.44 ± 32.85 b | 14.34 ± 11.68 a | 12.65 ± 8.44 a | 27.73 ± 22.28 | 16.68 ± 17.24 | 21.92 ± 18.66 |
| CEL (nmol h−1 g−1) | 4.87 ± 3.56 c | 0.86 ± 0.81 a | 2.11 ± 2.37 b | 2.37 ± 2.29 | 2.94 ± 2.86 | 2.36 ± 1.42 |
| XIL (nmol h−1 g−1) | 7.18 ± 5.35 c | 1.77 ± 1.23 a | 3.11 ± 2.06 b | 4.12 ± 2.49 | 4.35 ± 3.84 | 3.80 ± 2.00 |
| LEU (nmol h−1 g−1) | 4.64 ± 3.21 a | 5.84 ± 3.29 a | 22.12 ± 11.06 b | 16.28 ± 9.03 | 10.66 ± 9.05 | 12.44 ± 6.33 |
| NAG (nmol h−1 g−1) | 176.49 ± 142.85 a | 513.96 ± 402.51 c | 320.83 ± 191.37 b | 326.87 ± 215.22 | 286.72 ± 181.51 | 309.07 ± 182.48 |
| PHOS (nmol h−1 g−1) | 94.82 ± 65.74 | 99.23 ± 36.10 | 73.55 ± 48.40 | 105.50 ± 54.80 a | 231.14 ± 152.02 b | 157.72 ± 106.96 ab |
| ECM relative abundance (%) | 37.36 ± 22.52 a | 67.99 ± 17.22 b | 54.24 ± 24.38 b | 45.53 ± 21.68 | 62.27 ± 16.89 | 56.11 ± 23.62 |
| SAP relative abundance (%) | 38.96 ± 17.68 c | 5.72 ± 3.60 a | 12.40 ± 14.74 b | 21.74 ± 11.90 | 10.09 ± 11.24 | 16.34 ± 24.38 |
Note: Tukey HSD post‐hoc tests with p‐values ≤.05 are indicated with bold letters, based on generalized linear models with a Gamma distribution.
Abbreviations: AGLU, alpha‐glucosidase; BGLU, beta‐glucosidase; CEL, cellobiohydrolase; GLUCU, beta‐glucuronidase; LEU, leucine aminopeptidase; NAG, N‐acetyl‐glucosaminidase; PHOS, acid phosphatase; XIL, beta‐xylosidase.