TABLE 4.
AMOVAs for European Cerastoderma edule beds in the Northeast Atlantic region. For models based on fastSTRUCTURE results (II, III and IV), beds were grouped following the groups found with this programme
| F‐statistic | Variance component | % Variation | |
|---|---|---|---|
| Model I—Temporal (6 groups) | |||
| Among beds (F ST) | 0.03501*** | 3.58724 | 3.50 |
| Among sampling sites (F CT) | 0.03513*** | 3.59951 | 3.51 |
| Among temporal replicates within sampling site (F SC) | −0.00012 NS | −0.01227 | −0.01 |
| Within beds | 98.87860 | 96.50 | |
| Model II—STRUCTURE—all data set (K = 2) | |||
| Among beds (F ST) | 0.03769*** | 9.14631 | 3.77 |
| Among groups (F CT) | 0.02977*** | 7.22427 | 2.98 |
| Among beds within groups (F SC) | 0.00816*** | 1.92204 | 0.79 |
| Within beds | 233.52461 | 96.23 | |
| Model III—STRUCTURE—neutral data set (K = 3) | |||
| Among beds (F ST) | 0.01636*** | 2.85579 | 1.64 |
| Among groups (F CT) | 0.01217*** | 2.12470 | 1.22 |
| Among beds within groups (F SC) | 0.00424*** | 0.73109 | 0.42 |
| Within beds | 171.70434 | 98.36 | |
| Model IV—STRUCTURE—outliers (K = 2/K = 9) | |||
| Among beds (F ST) | 0.17164***/0.13253*** | 6.46766/4.76845 | 17.17/13.25 |
| Among groups (F CT) | 0.13357***/0.12288*** | 5.03316/4.42131 | 13.36/12.29 |
| Among beds within groups (F SC) | 0.04394***/0.01100*** | 1.43450/0.34714 | 3.81/0.96 |
| Within beds | 31.21308/31.21308 | 82.84/86.75 | |
NS, non significant (p > 0.05).
**p < 0.01; ***p < 0.001.