setMetabolicRate {mizer} | R Documentation |
Set metabolic rate
Description
Sets the rate at which energy is used for metabolism and activity
Usage
setMetabolicRate(params, metab = NULL, p = NULL, reset = FALSE, ...)
getMetabolicRate(params)
metab(params)
metab(params) <- value
Arguments
Value
setMetabolicRate()
: A MizerParams object with updated metabolic rate.
getMetabolicRate()
or equivalently metab()
: An array
(species x size) with the metabolic rate.
Setting metabolic rate
The metabolic rate is subtracted from the energy income rate to calculate
the rate at which energy is available for growth and reproduction, see
getEReproAndGrowth()
. It is measured in grams/year.
If the metab
argument is not supplied, then for each species the
metabolic rate k(w)
for an individual of size w
is set to
k(w) = k_s w^p + k w,
where k_s w^p
represents the rate of standard metabolism and k w
is the rate at which energy is expended on activity and movement. The values
of k_s
, p
and k
are taken from the ks
, p
and
k
columns in the species parameter dataframe. If any of these
parameters are not supplied, the defaults are k = 0
, p = n
and
k_s = f_c h \alpha w_{mat}^{n-p},
where f_c
is the critical feeding level taken from the fc
column
in the species parameter data frame. If the critical feeding level is not
specified, a default of f_c = 0.2
is used.
See Also
Other functions for setting parameters:
gear_params()
,
setExtEncounter()
,
setExtMort()
,
setFishing()
,
setInitialValues()
,
setInteraction()
,
setMaxIntakeRate()
,
setParams()
,
setPredKernel()
,
setReproduction()
,
setSearchVolume()
,
species_params()