create_lh_list: Create new life history list

Description Usage Arguments Value Author(s)

View source: R/create_lh_list.R

Description

create_lh_list Creates list of life history information

Usage

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create_lh_list(
  vbk,
  linf,
  lwa,
  lwb,
  S50,
  M50,
  S95 = NULL,
  M95 = NULL,
  Sslope = NULL,
  Mslope = NULL,
  selex_input = "length",
  maturity_input = "length",
  selex_type = "logistic",
  dome_sd = NULL,
  binwidth = 1,
  t0 = -0.01,
  CVlen = 0.1,
  SigmaC = 0.001,
  SigmaI = 0.001,
  SigmaR = 0.737,
  SigmaF = 0.2,
  R0 = 1,
  h = 1,
  qcoef = 1e-05,
  M = NULL,
  AgeMax = NULL,
  Fequil = 0.5,
  Frate = 0.2,
  start_ages = 0,
  rho = 0,
  theta = 1,
  nseasons = 1,
  nfleets = 1
)

Arguments

vbk

von Bertalanffy k Brody growth coefficient

linf

von Bertalanffy Linf asymptotic length

lwa

length-weight scaling parameter

lwb

length-weight allometric parameter

S50

starting value for age or length at 50 percent selectivity (will be estimated in LIME method) – can be vector for multiple fleets

M50

age or length at 50 percent maturity

S95

default=NULL for one-parameter logistic model; starting value for age or length at 95 percent selectivity – can be vector for multiple fleets

M95

default=NULL for one-parameter logistic model; age or length at 50 percent maturity

Sslope

default=NULL, option to specify slope of logistic curve for length-at-selectivity – can be vector for multiple fleets

Mslope

default=NULL option to specify slope of logistic curve for length-at-maturity

selex_input

specify whether argument S50 is an age or a length (default length)

maturity_input

specify whether argument M50 is an age or a length (default length)

selex_type

default="logistic" for 1-parameter logistic selex, alternate="dome" for dome-shaped selectivity and must specify dome-params LV and RV. – can be vector for multiple fleets

dome_sd

standard deviation of normal distribution to the right side of the fully selected age/length – can be vector for multiple fleets

binwidth

width of length bins (default = 1)

t0

theoretical age at length=0 (default = -0.01); avoid fixing to zero due to some issues with the first age/length bin

CVlen

CV of the growth curve (default = 0.1)

SigmaC

standard deviation - observation error of catch data (default = 0.2)

SigmaI

standard deviation - observation error of index data (default = 0.2)

SigmaR

standard deviation - process error for recruitment time series (default = 0.6 – starting value, will be estimated)

SigmaF

standard deviation - process error for fishing mortality time series (default = 0.3) – can be vector for multiple fleets

R0

equilibrium recruitment (default = 1); when no information on scale is available, will estimate relative deviations around equilibrium 1

h

steepness parameter (default = 1)

qcoef

starting value for catchability coefficient (when index data is available, default = 1e-5) – can be vector for multiple fleets

M

value for natural mortality if there has been a study (default = NULL, calculated internally from vbk)

AgeMax

option to specify maximum age; default=NULL will calculate as the age at which 1 percent of individuals are left in the unfished condition

Fequil

equilibrium fishing mortality rate (used for simulation; default=0.2) – can be vector for multiple fleets

Frate

parameter used to simulate fishing moratality time series (default=NULL) – can be vector for multiple fleets

start_ages

age to start (either 0 or 1; default = 0)

rho

first-order autocorrelation in recruitment residuals parameter, default=0 (recruitment not autocorrelated)

theta

dirichlet-multinomial parameter related to effective sample size. default to 10, will not be used if length frequency distribution LFdist is set to multinomial (0). Only used if distribution is dirichlet-multinomial (LFdist=1)

nseasons

specify number of sub-time periods per year; default=1 (instantaneous sampling)

nfleets

specify number of fleets - fleet-specific parameters can be length nfleets, or shared by specifying only one number

Value

List, a tagged list of life history traits

Author(s)

M.B. Rudd


merrillrudd/LIME documentation built on June 20, 2020, 2:58 p.m.