Table 2.
Vital rates used for each class and environmental condition.
| Vital rate | Conditions | LJ | HJ | YLAJ | YHAJ | ALAJ | AHAJ | References |
|---|---|---|---|---|---|---|---|---|
| Yearly survival (Sy) | favourable | 0.42a | 0.6a | 0.60b | 0.60b | 0.71b | 0.71b | aassumed*bBriedermann34 |
| unfavourable | 0.15a | 0.35a | 0.31b | 0.31b | 0.58b | 0.58b | ||
| Summer survival (Ss) | 0.73c | 0.73c | 0.95a | 0.95a | 0.95a | 0.95a | aassumed* cFruzinski56 | |
| Winter survival (Sw) | favourable | 0.58 | 0.85 | 0.63 | 0.63 | 0.75 | 0.75 | Sw = Sy/Ss |
| unfavourable | 0.21 | 0.48 | 0.33 | 0.33 | 0.61 | 0.61 | ||
| Mean No. of foetuses | favourable | 3.88 | 4.90 | 5.65 | 7.13 | 6.36 | 7.41 | Briedermann34; own data |
| unfavourable | 0 | 3.20 | 4.55 | 5.75 | 5.80 | 6.76 | ||
| Breeding probability | favourable | 0.10d | 0.60e | 1.00e | 1.00e | 1.00e | 1.00e | eGethöffer, et al.35 dServanty et al.17 |
| unfavourable | 0d | 0.43e | 1.00e | 1.00e | 1.00e | 1.00e | ||
| Intra uterine mortality | 0.11 | 0.18 | 0.06 | Gethöffer, et al.35 | ||||
| Fecundity (F) | favourable | 0.073 | 0.812 | 1.065 | 1.344 | 1.637 | 1.907 | Calculated |
| unfavourable | 0.000 | 0.215 | 0.449 | 0.568 | 1.214 | 1.415 | ||
*The effect of the assumptions on the model outcome and the conclusions was tested in separate analyses. Neither assumption affected the conclusion we drew from the model outcomes (see text and Supplementary Information 2 for more information).