Table 4 General linear model analysis for a mixed model nested ANOVA-type design, testing for the effects of forest type and site as fixed factors, and replica as random factor, on the chemical storage of Nothofagus forest mineral soils. N and P were transformed by log(Y) to accomplish assumptions, but not transformed averages are presented in the table. F (p) Fisher statistic with probability in parentheses. Different letters show differences by Tukey test at p < 0.05.
Main factors | SOM (Mg ha−1) | SOC (Mg C ha−1) | N (Mg ha−1) | P (Mg ha−1) | |
|---|---|---|---|---|---|
Forest type | Np | 56.9 | 32.4 | 1.79 | 4.9 |
M | 54.1 | 28.6 | 1.41 | 2.1 | |
Nb | 58.5 | 33.3 | 1.84 | 1.8 | |
Site | COA | 52.6 | 26.5 | 1.27 | 4.8 b |
MOU | 60.4 | 36.4 | 2.09 | 1.1 a | |
Tested effects | |||||
Forest type | F (p) | 0.09 (0.914) | 0.16 (0.855) | 0.21 (0.816) | 0.72 (0.542) |
Site | F (p) | 0.84 (0.412) | 1.89 (0.241) | 3.12 (0.152) | 20.80 (0.010*) |
Forest type × Site | F (p) | 0.00 (0.997) | 0.05 (0.948) | 0.12 (0.891) | 3.97 (0.112) |
Forest type × Replica (Site) | F (p) | 1.23 (0.309) | 0.88 (0.484) | 0.89 (0.478) | 2.11 (0.094) |