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| Level of variance | Standard error | Component |
|---|---|---|
| 1 |
0.333 ± 0.474 |
Saltwater/freshwater |
| 2 |
0.582 ± 0.341 |
Region |
| 3 |
0.362 ± 0.111 |
Year |
| 4 | 0.042 ± 0.055 | Season |
