Table 1. The species that contribute to the greatest dissimilarity in community biomass between regions.
| Species | Functional group/Common name | Biomass (g) Kyuquot (>20 yrs) | Biomass (g) Barkley (absent) | Dissimilarity Index | Contribution (%) to Dissimilarity |
| Semibalanus cariosus | Barnacle | 17.62 | 30.33 | 11.73 | 23.23 |
| Pollicipes polymerus | Barnacle | 5.41 | 12.77 | 6.96 | 13.78 |
| Petrolistes cinctipes | Crab | 2.45 | 8.93 | 4.83 | 9.56 |
| Hiatella arcitca | Clam | 1.99 | 7.36 | 3.7 | 7.32 |
| Cucumaria pseudocurata | Sea cucumber | 4.98 | 3.65 | 2.45 | 4.86 |
| Cirolana harfordi | Isopod | 3.2 | 5.09 | 2.17 | 4.3 |
| Nucella canaliculata | Predatory snail | 1.1 | 3.75 | 2.05 | 4.05 |
| Leukoma staminea | Clam | 1.18 | 2.66 | 1.72 | 3.4 |
| Phascolosom agassizii | Peanut worm | 1.6 | 2.72 | 1.71 | 3.38 |
| Nucella ostrina | Predatory snail | 0.73 | 1.6 | 0.97 | 1.93 |