In iantaylor-NOAA/Lingcod_2021: Estimate the Status of Lingcod off the US West Coast in 2021

With the exceptions noted above, the general model specifications were retained from the previous assessment. The assessment is sex-specific, including the estimation of separate growth curves and natural mortality for males and females. The sex ratio at birth is assumed to be 50:50. Female spawning biomass is used in calculating stock status.

The model starts at equilibrium, assuming an unfished initial age structure in 1889. The internal population dynamics include ages 0-25, where age 25 is the plus-group. As there is little growth occurring at age 25 and very few observations, the data use a plus group of age 20.

The following likelihood components are included in this model: catch, indices, discards, length compositions, age compositions, recruitments, parameter priors, and parameter soft bounds (Table \ref{tab:table-likelihoods-base}). See the Stock Synthesis technical documentation for details [@methot_stock_2013]. Estimated likelihood components from the base models can be found in the model output files archived with this report.

iantaylor-NOAA/Lingcod_2021 documentation built on Oct. 30, 2024, 6:42 p.m.