Hist-class: Class "Hist"

Description Slots Author(s)

Description

An object for storing information generated by the end of the historical simulations

Slots

Data

The Data object at the end of the historical period

Obs

A table of sampled parameters of the observation model. Table of nsim rows. Real numbers

  • Abias: bias in observed current absolute stock biomass

  • Aerr: error in observed current absolute stock biomass

  • betas: hyper-stability/hyper-depletion parameter

  • BMSY_B0bias: bias in ratio of most productive stock size relative to unfished

  • Brefbias: bias in BMSY stock levels (target or reference biomass levels)

  • CAA_ESS: the effective sample size of multinomial catch-at-age observation model (number of independent draws)

  • CAA_nsamp: the number of catch-at-age observations per time step

  • CAL_ESS: the effective sample size of multinomial catch-at-length observation model (number of independent draws)

  • CAL_nsamp: the number of catch-at-length observations per time step

  • Cbias: bias in observed catches

  • Crefbias: bias in MSY prediction (target or reference catch)

  • Csd: observation error in observed catches (lognormal CV)

  • Dbias: bias in observed stock depletion (also applies to depletion Dt for DCAC)

  • Derr: error in observed stock depletion

  • FMSY_Mbias: bias in ratio of FMSY to natural mortality rate

  • hbias: bias in observed steepness of the stock recruitment relationship

  • Irefbias: bias in abundance index corresponding to BMSY stock levels

  • Isd: observation error in relative abundance index (lognormal CV)

  • Kbias: bias in maximum growth rate (von Bertalanffy K parameter)

  • lenMbias: bias in length at 50 per cent maturity

  • LFCbias: bias in length at first capture

  • LFSbias: bias in length at full selection

  • Linfbias: bias in maximum length (von Bertalanffy Linf parameter)

  • Mbias: bias in observed natural mortality rate

  • Recsd: error in observed recruitment

  • t0bias: bias in theoretical length at age zero (von Bertalanffy t0 parameter)

OM

A numeric data.frame with nsim rows with sampled Stock & Fleet parameters

AtAge

A named list with arrays (dim nsim, maxage, nyears+proyears):

  • Length: Length-at-age for each simulation, age, and year

  • Weight: Weight-at-age for each simulation, age, and year

  • Select: Selectivity-at-age for each simulation, age, and year

  • Retention: Retention-at-age for each simulation, age, and year

  • Maturity: Maturity-at-age for each simulation, age, and year

  • N.Mortality: Natural mortality-at-age for each simulation, age, and year

  • Nage: Total numbers by simulation, age, and year

  • SSBage: Spawning stock biomass by simulation, age, and year

  • FM: Fishing mortality by simulation, age, year, and area

TSdata

A named list with population dynamics by simulation and year :

  • VB: Vulnerable biomass

  • SSB: Spawning stock biomass

  • B: Total biomass

  • Removals: Removals

  • Catch: Retained catch (will be same as removals unless there is discard mortality)

  • Rec: Recruitment

  • N: Total numbers

  • Find: Historical fishing effort

  • Marray: Average adult natural mortality (historical & projection)

  • RecDev: Recruitment deviations (historical & projection)

Ref

A numeric data.frame with nsim rows containing biological reference points:

  • B0: Average unfished total biomass

  • Blow: Spawning stock biomass where it takes MGThorizon x MGT to reach Bfrac of BMSY

  • BMSY: Average total biomass corresponding with MSY

  • BMSY_B0: Ratio of BMSY to B0

  • FMSY: Fishing mortality rate corresponding with MSY

  • FMSY_M: Ratio of FMSY to (adult) M

  • MGT: Mean generation time

  • MSY: Maximum sustainable yield

  • N0: Average unfished numbers

  • R0: Average unfished recruitment

  • RefY: Maximum yield obtained in forward projections with a fixed F

  • SSB0: Average unfished spawning biomass

  • SSBMSY: Average spawning biomass corresponding with MSY

  • SSBMSY_SSB: Ratio of SSBMSY to SSB0

  • UMSY: Exploitation rate corresponding with MSY

  • VBMSY: Average vulnerable biomass corresponding with MSY

SampPars

All sampled Stock, Fleet, Obs, and Imp parameters

Misc

A list of additional information

Author(s)

A. Hordyk


DLMtool documentation built on March 13, 2020, 2:52 a.m.