Table 1.
Results of likelihood-ratio test generalized linear mixed models (GLMM) which compared the full models to the reduced ones by the particular factors. Sampling plots nested within compartment were used as random variable. Response variable of: GLMM1 was herb cover, GLMM2 total species richness, GLMM3 species richness of short-lived species and GLMM4 species richness of long-lived species.
| model | combination | Df | AIC | LRT | Pr(Chi) |
|---|---|---|---|---|---|
| GLMM 1 | full model | 121.8 | |||
| year | 3 | 152.4 | 36.6 | <0.001 | |
| treatment | 2 | 130.8 | 12.9 | 0.002 | |
| tree species | 1 | 157.9 | 38.0 | <0.001 | |
| full model | 18.6 | ||||
| year : treatment : tree species | 6 | 23.7 | 17.1 | 0.009 | |
| GLMM 2 | full model | 832.8 | |||
| year | 3 | 835.4 | 8.6 | 0.035 | |
| treatment | 2 | 837.5 | 8.6 | 0.013 | |
| tree | 1 | 835.7 | 4.9 | 0.028 | |
| full model | 810.2 | ||||
| year | 3 | 812.7 | 8.6 | 0.035 | |
| treatment : tree species | 2 | 832.8 | 26.7 | <0.001 | |
| GLMM 3 | full model | 718.6 | |||
| year | 3 | 726.6 | 14.0 | 0.003 | |
| treatment | 2 | 722.0 | 7.4 | 0.025 | |
| tree species | 1 | 725.2 | 8.5 | 0.003 | |
| full model | 573.7 | ||||
| year | 3 | 568.1 | 0.4 | 0.939 | |
| treatment : tree species | 2 | 582.8 | 13.0 | 0.001 | |
| GLMM 4 | full model | 743.9 | |||
| year | 3 | 751.9 | 14.0 | 0.003 | |
| treatment | 2 | 749.4 | 9.4 | 0.009 | |
| tree species | 1 | 770.6 | 28.6 | <0.001 | |
| full model | 692.3 | ||||
| year | 3 | 700.22 | 14.0 | 0.003 | |
| treatment : tree species | 2 | 718.63 | 30.4 | <0.001 | |