Table 2 Parameters of the nonlinear model of mixed effects adjusted for maximum likelihood to predict leaf biomass of radiata pine
Fixed effects | |||||
Parameter | Value | Standard error | Degrees of freedom | t value | p value |
α | 0.0075 | 0.0025 | 44 | 3.0470 | 0.0039 |
β | 2.6328 | 0.1289 | 44 | 20.4229 | 0.0000 |
Random effects | |||||
Parameter | Site P800 | Site P1100 | Site P1500 | Site P1700 | Site P1750 |
b j | − 0.1674 | 0.0898 | 0.0460 | 0.0640 | − 0.0325 |
Schwarz’s Bayesian criterion | |||||
Akaike information criterion | Bayesian information criterion | Log-likelihood value | N | ||
171.3124 | 178.9605 | − 81.6562 | 50 | ||