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

wi = 1 for all individuals

wi depends on genetic characteristic of i

wi 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 wi

Based on wi

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


F : fecundity per individual; wi : juvenile survival for individual i ; W : average offspring survival; m : emigration rate; K : local carrying capacity; Size : total metapopulation size.

Robert BMC Evolutionary Biology 2011 11:260   doi:10.1186/1471-2148-11-260

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