Takes the density-independent rates \(R_{di}\) of egg production and returns
reduced, density-dependent rates \(R_{dd}\) given as
$$R_{dd} = \frac{R_{di}}{1+(b\ R_{di})^c}$$
SheperdRDD(rdi, species_params, ...)
Vector of density-dependent reproduction rates.
Vector of density-independent reproduction rates \(R_{di}\) for all species.
A species parameter dataframe. Must contain columns
sheperd_b
and sheperd_c
with the parameters b and c.
Unused
With \(b = 1/R_{max}\) and \(c = 1\) this reduces to the Beverton-Holt
reproduction rate, see BevertonHoltRDD()
.
Other functions calculating density-dependent reproduction rate:
BevertonHoltRDD()
,
RickerRDD()
,
constantEggRDI()
,
constantRDD()
,
noRDD()