FAO: Small Pelagics

05

Life history

     [,1]           [,2]         
[1,] "K"            "M"          
[2,] "Winfinity"    "Loo"        
[3,] "tmax"         "tm"         
[4,] "Lm"           "Temperature"
[5,] "ln_margsd"    "rho"        
[6,] "logitbound_h" "ln_r"       

     [,1]           [,2]         
[1,] "K"            "M"          
[2,] "Winfinity"    "Loo"        
[3,] "tmax"         "tm"         
[4,] "Lm"           "Temperature"
[5,] "ln_margsd"    "rho"        
[6,] "logitbound_h" "ln_r"       

     [,1]           [,2]         
[1,] "K"            "M"          
[2,] "Winfinity"    "Loo"        
[3,] "tmax"         "tm"         
[4,] "Lm"           "Temperature"
[5,] "ln_margsd"    "rho"        
[6,] "logitbound_h" "ln_r"       

Limnothrissa miodon 0.822, 1.3722, 1.1032, 11.9694, 0.7847

Stolothrissa tanganicae 0.9141, 2.1581, 0.6141, 9.965, 0.8052

Rastrineobola argentea 0.9843, 0.7467, 0.7827, 14.4809, 0.6948

Figure 1 Vectors-at-age

Figure 2 Equilibrium dynamics

[1] "maxfbar has been changed to accomodate new plusgroup"

Figure 3 Operating model for 3 growth curves

Seasonal Operating Model

[1] "maxfbar has been changed to accomodate new plusgroup"

Figure 4 Vectors from seasonal operating model

Figure 5 Equilibrium from seasonal operating model

An object of class "FLQuants": EMPTY
model:  
rec ~ a * ssb/(b + ssb)
<environment: R_EmptyEnv>

params:  
An object of class "FLPar"
      season
params 1       2       3       4      
     a      NA 12951.2      NA      NA
     b      NA    57.2      NA      NA
units:  NA 

Figure 6 Equilibrium curves from running seasonal operating model to equilibrium

Operating Model Dynamics

• Use life history parameters for k, Linf from FishBase and model M using the GIslason relationship
  • Break M into M1 & M2
  • Link M1 to environmental drivers
  • Link M2 to predation
  • Add random noise to M, but keep correlations across ages and with mass-at-age
  • Add Auto-correlation along cohorts

Operating Models

References

Author information

Laurence Kell. laurie@seaplusplus.co.uk

Acknowledgements

Software Versions

• R version 4.2.1 (2022-06-23)

• plyr: 2.6.19.9105

• dplyr: 2.6.19.9105

• reshape: 2.6.19.9105

• ggplot2: 2.6.19.9105

• ggpubr: 2.6.19.9105

• GGally: 2.6.19.9105

• ggradar: 2.6.19.9105

• FLCore: 2.6.19.9105

• FLBRP: 2.6.19.9105

• FLasher: 2.6.19.9105

• FLife: 2.6.19.9105

• ggplotFL: 2.6.19.9105

• mydas: 2.6.19.9105

• popbio: 2.6.19.9105

• spatstat: 2.6.19.9105

• rfishbase: 2.6.19.9105

• readxl: 2.6.19.9105

• compositions: 2.6.19.9105

• Compiled: Fri Jan 12 12:44:41 2024