Table 2.
Results of univariate PERMANOVA for subtidal kelps in June, August and October 2020. PERMANOVAs (9999 permutations) are based on Euclidean distances with a dummy value of 1, under a reduced model with Monte Carlo (MC) correction. ‘Site’ and ‘month’ as fixed factors. Significant values are indicated in bold (P ≤ 0.05). Post-hoc pairwise test followed PERMANOVAs (Supplementary Data S4).
| Response variable | Site | Month | Site × month | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| subtidally | d.f. | F | P (MC) | d.f. | F | P (MC) | d.f. | F | P (MC) | Res d.f. |
| Density of S. polyschides per m 2 | ||||||||||
| S. polyschides (sum) | 2 | 5.6284 | 0.0047 | 2 | 2.9474 | 0.0568 | 4 | 3.5225 | 0.0114 | 81 |
| Cover of S. polyschides per m 2 | ||||||||||
| S. polyschides (sum) | 2 | 1.0583 | 0.3504 | 2 | 12.785 | 0.0001 | 4 | 3.6592 | 0.0078 | 81 |
| Biometrics per S. polyschides individual | ||||||||||
| Total biomass/WW | 2 | 0.3 | 0.7434 | 2 | 13.556 | 0.0001 | 4 | 4.7573 | 0.0015 | 81 |
| Total length | 2 | 5.2642 | 0.0066 | 2 | 7.2153 | 0.001 | 4 | 1.4334 | 0.2223 | 81 |
| Sorus biomass/WW | 2 | 0.2506 | 0.78 | 2 | 7.2847 | 0.0012 | 4 | 4.4964 | 0.0027 | 81 |
| Standing stock | ||||||||||
| g WW m−2 | 2 | 3.9109 | 0.0231 | 2 | 0.3802 | 0.6829 | 4 | 0.9631 | 0.4316 | 81 |