PopSim {primer}

Population Simulator

Description

Resampling stochastic simulator for a single density-independent population.

Usage

PopSim(Rs, N0, years = 50, sims = 10)

Arguments

Rs

vector of observed annual growth rates (N[t+1]/N[t]).

N0

initial population size.

years

number of years to simulate.

sims

number of simulated populations.

Details

Designed to simulate trajectories based on resampled observed N[t+1]/N[t].

Value

Returns a matrix of population sizes for time = t (rows) for each replicated population (columns).

References

Stevens, M.H.H. (2009) A Primer of Ecology with R. Use R! Series. Springer.

See Also

sparrows

Examples

lambdas <- runif(10, .5, 1.5)
out <- PopSim(Rs=lambdas, years=50, N0=50)
matplot(0:50, out, type='l')
summary(out[51,])