Table 5 PerMANOVA results for fire treatment effects on Sørensen dissimilarity between plots for assemblages of perennial herbs and shrubs on McCorkhill and Yackelup forest sites, Western Australia, between 1986 and 2015. Pseudo-F values derived from ratio of mean square for effect and residual mean square. P(perm) is the probability of a greater Pseudo-F value and is derived from permutation of the raw data and consideration of the number of unique permutations (Unique perms). P(perm) ≤ 0.05 indicates a significant effect of the source of variation. Plot (Fire treatment) and Sample event (Fire treatment) indicate nesting of Plot and Sample event within Fire treatment
Location | Source | df | Sum of squares | Mean square | Pseudo- F | P (perm) | Unique perms |
|---|---|---|---|---|---|---|---|
McCorkhill | Covariate: years since fire | 1 | 3 913.4 | 3913.4 | 2.0853 | 0.071 | 9951 |
Covariate: years elapsed | 1 | 6 903 | 6903 | 9.9707 | 0.0001 | 9958 | |
Fire treatment | 4 | 5 628.5 | 1407.1 | 0.94566 | 0.56 | 9905 | |
Plot (Fire treatment) | 5 | 8 123 | 1624.6 | 21.101 | 0.0001 | 9905 | |
Sample event (Fire treatment) | 21 | 8 831.6 | 420.55 | 5.4624 | 0.0001 | 9812 | |
Residual | 23 | 1 770.8 | 76.991 | Â | Â | Â | |
Total | 55 | 3 5170 | Â | Â | Â | Â | |
Yackelup | Covariate: years since fire | 1 | 1 952.8 | 1952.8 | 1.3413 | 0.31 | 9949 |
Covariate: years elapsed | 1 | 7 446.9 | 7446.9 | 10.259 | 0.0004 | 9968 | |
Fire treatment | 4 | 6 907 | 1726.7 | 0.91292 | 0.61 | 9908 | |
Plot (Fire treatment) | 5 | 8 390.9 | 1678.2 | 20.319 | 0.0001 | 9912 | |
Sample event (Fire treatment) | 16 | 8 719.9 | 544.99 | 6.5989 | 0.0001 | 9894 | |
Residual | 16 | 1 321.4 | 82.589 | Â | Â | Â | |
Total | 43 | 34 739 | Â | Â | Â | Â |