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The following table describes all elements contained within input_list$pars, which are generated using the SPoRC::Setup_x functions. Note that when n_sexes > 1, the first dimension will always be females and the second dimension will always be males.

Fishery Removals

Parameter Dimension Description Default
ln_sigmaC n_regions, n_fish_fleets SD for catch fit 0.01
ln_sigmaC_agg n_fish_fleets SD for aggregated catch fit 0.01
ln_sigmaF n_regions, n_fish_fleets SD for fishing mortality process error 0
ln_sigmaF_agg n_fish_fleets SD for aggregated fishing mortality process error 0
ln_F_mean n_regions, n_fish_fleets Log mean fishing mortality 0.1
ln_F_devs n_regions, n_years, n_fish_fleets Log deviations in fishing mortality 0
ln_F_devs_AggCatch n_Catch_Type_years, n_fish_fleets Region-aggregated log fishing mortality deviations 0
ln_F_mean_AggCatch n_fish_fleets Region-aggregated log mean fishing mortality 0.1

Fishery Selectivity

Parameter Dimension Description Default
fishsel_pe_pars n_regions, 4, n_sexes, n_fish_fleets Time-varying selectivity process error parameters 0
ln_fishsel_devs n_regions, n_years, n_bins, n_sexes, n_fish_fleets Log selectivity deviations (n_bins depends on whether selectivity is age or length-based) 0
ln_fish_fixed_sel_pars n_regions, max_fish_pars, max_fishsel_blks, n_sexes, n_fish_fleets Log selectivity function parameters 0

Fishery Index

Parameter Dimension Description Default
ln_fish_q n_regions, max_fishq_blks, n_fish_fleets Log fishery catchability 0

Survey Selectivity

Parameter Dimension Description Default
srvsel_pe_pars n_regions, 4, n_sexes, n_srv_fleets Time-varying selectivity process error parameters 0
ln_srvsel_devs n_regions, n_years, n_bins, n_sexes, n_srv_fleets Log selectivity deviations (n_bins depends on whether selectivity is age or length-based) 0
ln_srv_fixed_sel_pars n_regions, max_srv_pars, max_srv_blks, n_sexes, n_srv_fleets Log survey selectivity function parameters 0

Survey Index

Parameter Dimension Description Default
ln_srv_q n_regions, max_srvq_blks, n_fish_fleets Log survey catchability 0
srv_q_coeff n_regions, n_srv_fleets, n_covariates Regression coefficients for survey catchability based on covariates 0

Natural Mortality

Parameter Dimension Description Default
ln_M 1 Log natural mortality 0
M_offset 1 Offset for M 0.5

Recruitment

Parameter Dimension Description Default
ln_global_R0 1 Log virgin/mean recruitment 15
R0_prop n_regions – 1 Proportions for R0 0
steepness_h n_regions Steepness parameters (bounded logit space) 0
ln_InitDevs n_regions, n_ages - 2 Log initial age deviations 0
ln_RecDevs n_regions, n_recdev_years Log recruitment deviations 0
ln_sigmaR 2 SD for initial and recruitment deviations 0

Fishery Compositions

Parameter Dimension Description Default
ln_FishAge_theta n_regions, n_fish_fleets, n_sexes Log overdispersion (fishery age comp) 0
ln_FishLen_theta n_regions, n_fish_fleets, n_sexes Log overdispersion (fishery length comp) 0
ln_FishAge_theta_agg n_fish_fleets Log overdispersion for aggregated compositions (fishery age comp) 0
ln_FishLen_theta_agg n_fish_fleets Log overdispersion for aggregated compositions (fishery length comp) 0
FishAge_corr_pars n_regions, n_sexes, n_fish_fleets, 2 Correlation parameters for logistic-normal distribution (fishery age comps) 0.01
FishAge_corr_pars_agg n_fish_fleets Aggregated correlation parameter (fishery age comps, logistic-normal) 0.01
FishLen_corr_pars n_regions, n_sexes, n_fish_fleets, 2 Correlation parameters for logistic-normal distribution (fishery length comps) 0.01
FishLen_corr_pars_agg n_fish_fleets Aggregated correlation parameter (fishery length comps, logistic-normal) 0.01

Survey Compositions

Parameter Dimension Description Default
ln_SrvAge_theta n_regions, n_srv_fleets, n_sexes Log overdispersion (survey age comp) 0
ln_SrvLen_theta n_regions, n_srv_fleets, n_sexes Log overdispersion (survey length comp) 0
ln_SrvAge_theta_agg n_srv_fleets Log overdispersion for aggregated compositions (survey age comp) 0
ln_SrvLen_theta_agg n_srv_fleets Log overdispersion for aggregated compositions (survey length comp) 0
SrvAge_corr_pars n_regions, n_sexes, n_srv_fleets, 2 Correlation parameters for logistic-normal distribution (survey age comps) 0.01
SrvAge_corr_pars_agg n_srv_fleets Aggregated correlation parameter (survey age comps, logistic-normal) 0.01
SrvLen_corr_pars n_regions, n_sexes, n_srv_fleets, 2 Correlation parameters for logistic-normal distribution (survey length comps) 0.01
SrvLen_corr_pars_agg n_srv_fleets Aggregated correlation parameter (survey length comps, logistic-normal) 0.01

Movement

Parameter Dimension Description Default
move_pars n_regions, n_regions – 1, n_years, n_ages, n_sexes Movement logit parameters 0
logit_move_devs n_regions, n_regions – 1, n_years, n_ages, n_sexes Logit movement deviations 0
move_pe_pars n_regions, n_ages, n_sexes Log process error parameters 0

Tagging

Parameter Dimension Description Default
ln_Init_Tag_Mort 1 Log tag mortality 1e-50
ln_Tag_Shed 1 Log chronic tag shedding 1e-50
Tag_Reporting_Pars n_regions, n_years Logit tag reporting rate parameters 0
ln_tag_theta 1 Log overdispersion for tagging 0