Table 1.
Fidelity (Fk) and specificity (Sk) values of various species for the four main clusters (k) identified through hierarchical cluster analysis (HCA). The cluster where each species achieves its highest IndVal value is indicated in the “Cluster” column. Only species with a p-value ≤ 0.01 and an IndVal ≥ 0.5 are included in the table.
| Species | Fk=1 | Fk=2 | Fk=3 | Fk=4 | Sk=1 | Sk=2 | Sk=3 | Sk=4 | IndVal | Cluster |
|---|---|---|---|---|---|---|---|---|---|---|
| Ampelisca typica | 1.00 | 1.00 | 1.00 | 0.50 | 0.61 | 0.10 | 0.02 | 0.28 | 0.61 | 1 |
| Aonides paucibranchiata | 1.00 | 1.00 | 1.00 | 1.00 | 0.51 | 0.45 | 0.01 | 0.02 | 0.51 | |
| Echinocyamus pusillus | 1.00 | 1.00 | 0.33 | 1.00 | 0.51 | 0.39 | 0.00 | 0.09 | 0.51 | |
| Ensis ensis | 1.00 | 0.73 | 0.33 | 1.00 | 0.53 | 0.22 | 0.05 | 0.21 | 0.53 | |
| Glycymeris glycymeris | 1.00 | 1.00 | 1.00 | 1.00 | 0.54 | 0.21 | 0.02 | 0.23 | 0.54 | |
| Nototropis vedlomensis | 1.00 | 1.00 | 1.00 | 1.00 | 0.50 | 0.37 | 0.03 | 0.09 | 0.50 | |
| Nucula hanleyi | 0.75 | 0.36 | 0.00 | 0.00 | 0.83 | 0.17 | 0.00 | 0.00 | 0.63 | |
| Perioculodes longimanus | 1.00 | 1.00 | 0.67 | 0.50 | 0.58 | 0.28 | 0.06 | 0.08 | 0.58 | |
| Polygordius lacteus | 1.00 | 1.00 | 1.00 | 1.00 | 0.51 | 0.27 | 0.02 | 0.40 | 0.51 | |
| Syllis variegata | 1.00 | 1.00 | 0.00 | 1.00 | 0.58 | 0.18 | 0.00 | 0.24 | 0.58 | |
| Acrocnida brachiata | 0.75 | 0.91 | 0.00 | 0.00 | 0.09 | 0.91 | 0.00 | 0.00 | 0.83 | 2 |
| Ampharete baltica | 0.25 | 0.91 | 0.00 | 0.00 | 0.14 | 0.86 | 0.00 | 0.00 | 0.78 | |
| Animoceradocus semiserratus | 0.50 | 1.00 | 0.00 | 0.00 | 0.04 | 0.96 | 0.00 | 0.00 | 0.96 | |
| Branchiostoma lanceolatum | 1.00 | 1.00 | 0.67 | 1.00 | 0.23 | 0.72 | 0.01 | 0.05 | 0.72 | |
| Emarginula rosea | 0.00 | 0.91 | 0.00 | 0.00 | 0.00 | 1.00 | 0.00 | 0.00 | 0.91 | |
| Eurysyllis tuberculata | 0.25 | 1.00 | 0.00 | 0.00 | 0.06 | 0.94 | 0.00 | 0.00 | 0.94 | |
| Galathea intermedia | 1.00 | 1.00 | 0.67 | 1.00 | 0.22 | 0.75 | 0.02 | 0.01 | 0.75 | |
| Leptochiton cancellatus | 1.00 | 1.00 | 0.00 | 0.00 | 0.22 | 0.78 | 0.00 | 0.00 | 0.78 | |
| Othomaera othonis | 0.50 | 1.00 | 0.00 | 0.00 | 0.07 | 0.93 | 0.00 | 0.00 | 0.93 | |
| Pisidia longicornis | 1.00 | 1.00 | 1.00 | 1.00 | 0.14 | 0.76 | 0.07 | 0.03 | 0.76 | |
| Polititapes rhomboides | 1.00 | 1.00 | 0.00 | 0.50 | 0.15 | 0.84 | 0.00 | 0.01 | 0.84 | |
| Prosphaerosyllis laubieri | 0.50 | 1.00 | 0.00 | 0.00 | 0.06 | 0.94 | 0.00 | 0.00 | 0.94 | |
| Spirobranchus triqueter | 1.00 | 1.00 | 0.00 | 1.00 | 0.13 | 0.87 | 0.00 | 0.00 | 0.87 | |
| Tryphosa nana | 0.75 | 1.00 | 0.33 | 1.00 | 0.02 | 0.97 | 0.00 | 0.00 | 0.97 | |
| Bathyporeia tenuipes | 0.00 | 0.09 | 1.00 | 0.50 | 0.00 | 0.01 | 0.85 | 0.14 | 0.85 | 3 |
| Magelona johnstoni | 0.00 | 0.00 | 0.67 | 0.50 | 0.00 | 0.00 | 0.77 | 0.23 | 0.51 | |
| Mediomastus fragilis | 0.25 | 0.27 | 1.00 | 0.50 | 0.02 | 0.06 | 0.74 | 0.18 | 0.74 | |
| Megaluropus agilis | 0.75 | 0.36 | 1.00 | 1.00 | 0.05 | 0.02 | 0.74 | 0.18 | 0.74 | |
| Nephtys cirrosa | 0.50 | 0.18 | 1.00 | 1.00 | 0.01 | 0.00 | 0.75 | 0.24 | 0.75 | |
| Spiophanes bombyx | 0.25 | 0.00 | 1.00 | 0.50 | 0.04 | 0.00 | 0.68 | 0.28 | 0.68 | |
| Asbjornsenia pygmaea | 1.00 | 0.91 | 1.00 | 1.00 | 0.09 | 0.01 | 0.42 | 0.51 | 0.51 | 4 |
| Cirolana cranchii | 0.25 | 0.55 | 0.00 | 1.00 | 0.11 | 0.24 | 0.00 | 0.65 | 0.65 | |
| Lanice conchilega | 0.75 | 0.73 | 0.00 | 1.00 | 0.05 | 0.07 | 0.00 | 0.88 | 0.88 | |
| Phyllodoce mucosa | 0.75 | 0.55 | 0.00 | 1.00 | 0.09 | 0.05 | 0.00 | 0.86 | 0.86 | |
| Streptodonta pterochaeta | 0.25 | 0.09 | 0.00 | 1.00 | 0.04 | 0.03 | 0.00 | 0.93 | 0.93 |