Table 4.
Results from partly-nested PERMANOVA on all algal taxa surveyed in experimental plots.
| Source | df | M versus 3 | M versus 1 | ||
|---|---|---|---|---|---|
| MS | P(perm) | MS | P(perm) | ||
| Frequency (F) | 1 | 738.88 | 0.406 | 1,368.3 | 0.073 |
| Severity (S) | 1 | 8,143 | 0.001 | 9,009.2 | 0.001 |
| FxS | 1 | 2,478.3 | 0.058 | 1713.7 | 0.038 |
| Plot(FxS) | 16 | 793.57 | 0.029 | 537.32 | 0.461 |
| Residual | 100 | 550.56 | 535.00 | ||
The term “Plot(F × S)” tests for the effects of differences over time. The first analysis (M versus 3) compares the % cover of taxa between the multiple small disturbance treatment and the disturbance at time point 3. The second analysis (M versus 1) compares the % cover of taxa between the multiple small disturbance treatment and the disturbance at time point 1. % cover was measured initially and then at 2, 4, 6, 12, 18 months post final disturbance after disturbance. P values < 0.05 are in bold.