GOA_INDICATOR: Gulf of Alaska (1990-2023)

In afsc-gap-products/akfishcondition: Groundfish morphometric condition indicator

Gulf of Alaska (1990-2023)

Description

Morphometric condition indicators based on residuals from length-weight regressions for Pacific cod, walleye pollock (> 250 mm), walleye pollock (100-250 mm), Pacific cod, northern rock sole, southern rock sole, arrowtooth flounder, Dover sole, rex sole, flathead sole, Atka mackerel, blackspotted rockfish, rougheye rockfish, northern rockfish, shortraker rockfish, shaprchin rockfish, and Pacific ocean perch in the Gulf of Alaska.

Usage

GOA_INDICATOR

Format

A list containing two data frames (indicator for the full region, indicator by stratum) and a character vector.

• FULL_REGION (data frame): Residuals for the full region

  • year: Year

  • common_name: Year

  • mean_wt_resid: Mean residual for the full region

  • se_wt_resid: Standard error of the indicator for the full region

• STRATUM (data frame): Residuals by stratum

  • common_name: Species Common name

  • year: Year

  • inpfc_stratum: INPFC Stratum

  • stratum_resid_mean: Unweighted stratum mean residual

  • n: Sample size for the stratum

  • stratum_resid_sd: Standard error of the stratum mean residual

  • weighted_resid_mean: Stratum mean Residual weighted in proportion to stratum biomass

  • weighted_resid_se: Standard error of the stratum mean residual weighted in proportion to stratum biomass

• LAST_UPDATE: Date when indicator and data were last updated.

Source

https://www.fisheries.noaa.gov/contact/groundfish-assessment-program

afsc-gap-products/akfishcondition documentation built on June 11, 2025, 5:37 p.m.