calc_ration: Calculate species ration, growth efficiency, and size class...

In NOAA-EDAB/LeMANS: length-based multispecies analysis by numerical simulation (LeMANS)

Description

Calculates the ration, weight, and growth efficiency for a species in a size class. Ration is defined as the amount consumed to account for growth (growth increment / growth efficiency)

Usage

calc_ration(nSize, nSpecies, uBound, lBound, midBound, phiMin,
  parameterValues)

Arguments

nSize	Number of size class intervals species can grow through
nSpecies	Number of species in the model
uBound	Upper bound of each size class interval
lBound	Lower bound of each size class interval
phiMin	Model time step (years). See calc_phi
mBound	Mid point of each size class interval

Value

A list is returned

ration	matrix of size nSize x nSpecies. Amount consumed to account for growth (growth in time interval)/growth efficiency
wgt	matrix of size nSize x nSpecies. Weight of average sized fish in each size class. Uses length weight relationship. See rochet_GB_parameterValues
gEff	matrix of size nSize x nSpecies. Growth Efficiencies
scLinf	The size class at which each species reaches L_inf (maximum length)

References

Hall et al. (2006). A length-based multispecies model for evaluating community responses to fishing. Can. J. Fish. Aquat. Sci. 63:1344-1359.

Rochet et al. (2011). Does selective fishing conserve community biodiversity? Prediction from a length-based multispecies model. Can. J. Fish. Aquat. Sci. 68:469-486

NOAA-EDAB/LeMANS documentation built on Feb. 7, 2021, 11:01 p.m.