Set maximum intake rate

setMaxIntakeRate(params, intake_max = NULL, reset = FALSE, ...)

getMaxIntakeRate(params)

intake_max(params)

intake_max(params) <- value

Arguments

params

MizerParams

intake_max

Optional. An array (species x size) holding the maximum intake rate for each species at size. If not supplied, a default is set as described in the section "Setting maximum intake rate".

reset

[Experimental] If set to TRUE, then the intake rate will be reset to the value calculated from the species parameters, even if it was previously overwritten with a custom value. If set to FALSE (default) then a recalculation from the species parameters will take place only if no custom value has been set.

...

Unused

value

intake_max

Value

setReproduction(): A MizerParams object with updated maximum intake rate.

getMaxIntakeRate() or equivalently intake_max(): An array (species x size) with the maximum intake rate.

Setting maximum intake rate

The maximum intake rate \(h_i(w)\) of an individual of species \(i\) and weight \(w\) determines the feeding level, calculated with getFeedingLevel(). It is measured in grams/year.

If the intake_max argument is not supplied, then the maximum intake rate is set to $$h_i(w) = h_i w^{n_i}.$$ The values of \(h_i\) (the maximum intake rate of an individual of size 1 gram) and \(n_i\) (the allometric exponent for the intake rate) are taken from the h and n columns in the species parameter dataframe. If the h column is not supplied in the species parameter dataframe, it is calculated by the get_h_default() function, using f0 and the k_vb column, if they are supplied.

If \(h_i\) is set to Inf, fish will consume all encountered food.

See also