Table 2.
Interpretation of classification tree results for Mytilus S-group E.
| April FLOW | June DWIND | July SST | T-Group1 | Toxicity Pattern | Possible Interpretation |
|---|---|---|---|---|---|
| average (i.e., not high) | average (i.e., not strong) | average (i.e., not low) | T1 (T2, T4) | No toxicity (or a single peak in late May or June) | Typically a weak cross-shore connection inhibits toxicity |
| average (i.e., not high) | strong | average (i.e., not low) | T3 (T4) | Double peak in late May and late June (or a single peak in June) | Strong downwelling wind initiates spring toxicity |
| very high | unspecified | average (i.e., not low) | T2 (T3, T4) | Single peak starting in early May and extending into June (occasionally followed by a peak in June) | High spring river flow delivers cells early (occasionally combined with strong downwelling wind in spring) |
| unspecified | unspecified | very low | T5 (T3) | Single peak starting in June and extending into July (occasionally preceded by a peak in late May) | Strong cross-shore connection extends summer toxicity (occasionally combined with high flow and/or a strong downwelling wind in spring) |
1
T-groups given in parentheses are those most frequently observed to occur when the single T-group provided by the classification tree is incorrect.