mizer (version 2.0.0)

getEGrowth: Get energy rate available for growth

Description

Calculates the energy rate \(g_i(w)\) (grams/year) available by species and size for growth after metabolism, movement and reproduction have been accounted for. Used by project() for performing simulations.

Usage

getEGrowth(
  params,
  n = initialN(params),
  n_pp = initialNResource(params),
  n_other = initialNOther(params),
  e_repro = getERepro(params, n = n, n_pp = n_pp, n_other = n_other),
  e = getEReproAndGrowth(params, n = n, n_pp = n_pp, n_other = n_other)
)

Arguments

params

A '>MizerParams object

n

A matrix of species abundances (species x size).

n_pp

A vector of the resource abundance by size

n_other

A list of abundances for other dynamical components of the ecosystem

e_repro

The energy available for reproduction (optional, although if specified, e must also be specified). A matrix of size no. species x no. size bins. If not supplied, is calculated internally using getERepro().

e

The energy available for reproduction and growth (optional, although if specified, e_repro must also be specified). A matrix of size no. species x no. size bins. If not supplied, is calculated internally using getEReproAndGrowth().

Value

A two dimensional array (prey species x prey size)

See Also

getERepro(), getEReproAndGrowth()

Other rate functions: getEReproAndGrowth(), getERepro(), getEncounter(), getFMortGear(), getFMort(), getFeedingLevel(), getMort(), getPredMort(), getPredRate(), getRDD(), getRDI(), getResourceMort()

Examples

# NOT RUN {
params <- newMultispeciesParams(NS_species_params_gears, inter)
# Project with constant fishing effort for all gears for 20 time steps
sim <- project(params, t_max = 20, effort = 0.5)
# Get the energy at a particular time step
getEGrowth(params,sim@n[21,,],sim@n_pp[21,])
# }