rtDensityDependence: modifies mortality according to density dependence

In AndySouth/rtsetse: simulating tsetse fly populations

Description

rtDensityDependence takes passed mortality rate and modifies it according to the relationship between density and carrying capacity. Implemented in the same way as hat-trick. Allows the proportion of mortality that is density dependent to be specified.
pMort at Carrying Capacity is left unmodified.
pMort at density 0 = pMort*(1-proportion of mortality density dependent).
In between is a linear relationship that continues to give higher values above carrying capacity.
! I wonder if density dependence could be implemented in a more standard way closer to the logistic model.

Usage

rtDensityDependence(fPopn, pMort, propDD, iCarryCap)

Arguments

fPopn	population number, can be adults or pupae
pMort	a mortality probability
propDD	proportion of mortality that is density dependent
iCarryCap	Carrying Capacity as an integer

Value

pMort modified mortality rate

AndySouth/rtsetse documentation built on May 5, 2019, 6:02 a.m.