4.1.2

akfishcondition 4.1.2 (September 25, 2024)

DATA UPDATE

• Updated condition indicator time series with 2024 EBS and AI
  survey data.
• Generated new plots showing results through 2024.

4.1.1

Changes for 2024 ESR:

• New length cut-off for Pacific cod based on EFH cut-offs
• New queries that use gap_products tables
• Split make_plots.R into multiple files with one function in each
• Revert AI .Rmd to stratum biomass weighted residual method

v4.0.1

NEW DATA

• Stratum-biomass weighted groundfish morphometric condition indicator data product for the EBS, NBS, and Gulf of Alaska updated through 2023.

4.0.0

This is a preliminary update for the 2023 ESR and ESP.

NEW FUNCTIONALITY

This package update includes two new internal functions (run_sbw_condition_multimodel() and calc_lw_residuals_multimodel()) for fitting and comparing length-weight regression models. The functions calculate morphometric condition for each species as follows:

1. Fit multiple candidate linear regression models to log(length)-log(weight) with covariates for sex, stratum, and/or day of year. All possible combinations of models are fitted.
2. The most parsimonious model based on AIC is selected as the best length-weight regression model.
3. Stratum-biomass weighted residuals are calculated for each species and region.

ADDITIONAL CHANGES

• Removed VAST condition indicator from built-in data sets.
• Modified data processing procedures to no longer process data using VAST with the aim of reducing run-times.
• Added preliminary GOA data for 2023.

3.1.0 - VAST Condition Indicator

Updates:

• Calculates VAST condition indicator using the run_vast_condition() function, where condition is the allometric intercept of the length-weight equation.
• Condition is calculated using model settings provided in built-in data sets (ESR_SETTINGS, ESP_SETTINGS).
• Condition indicators for the eastern Bering Sea shelf, northern Bering Sea, and Aleutian Islands are provided as built-in data sets (EBS_INDICATOR, AI_INDICATOR) through 2022.
• Condition indicator for the Pacific cod ESP is provided as a built-in data set (PCOD_ESP) through 2022.