Table 1. Summary of parameter estimates, obtained from the long-term population study on great tits in Wytham Woods, required to estimate the critical rate of temperature change (η c), following the model by Chevin et al. [13].
Parameter | Description | Estimate (SE) | Source |
σ2h2 | Additive genetic variance in laying date | 2.62 (0.67) | [31] |
γ | Strength of annual stabilising selection on laying date (based on number of recruits) | 0.0061 (0.0010) | This paper |
T | Generation time (average female age at reproduction, in years) | 1.81 (0.01) | [51] |
rmax | Maximum intrinsic rate of annual population growth | 0.49 | [28] |
B | Environmental sensitivity of selection (slope of annual caterpillar half-fall date against temperature) | −5.30 (0.56) | This paper |
b | Phenotypic plasticity (average individual slope of laying date against temperature) | −4.98 (0.50) | This paper |
See Text S1 for more details on parameter estimation.