Table 1 Modalities of population processes for the demographic, genetic and demo-genetic models
Process | Demographic model | Genetic model | Demo-genetic model |
|---|---|---|---|
Reproduction | Fecundity F for all individuals | Fecundity F for all individuals | Fecundity F for all individuals |
Survival of offspring | w i = 1 for all individuals | w i depends on genetic characteristic of i | w i depends on genetic characteristic of i |
Local intrinsic dynamics | Results from stochastic realizations of fecundity and offspring survival | Local populations always at their carrying capacity | Results from stochastic realizations of fecundity and offspring survival |
Selection | No variance in fitness | Based on w i | Based on w i |
Regulation | Local truncation to K | Local populations always at their carrying capacity K | Local truncation to K |
Dispersal | Emigration rate m (Bernoulli process) | Emigration rate m (Bernoulli process) | Emigration rate m (Bernoulli process) |
Modalities of perturbations | Reduce either offspring survival of local carrying capacity | Reduce local carrying capacity | Reduce either offspring survival of local carrying capacity |
Severity of perturbations | Empirical distribution [47] | Empirical distribution [47] | Empirical distribution [47] |
Spatial correlation of perturbations | Either fully correlated or uncorrelated | Either fully correlated or uncorrelated | Either fully correlated or uncorrelated |
Extinction | When Size = 0 | When W = F-1 | When Size = 0 |