Science & Data

Rex sole is assessed using an age-structured model and Tier 3 determination within the context of a two area model.

Rex sole is assessed using an age-structured model and Tier 3 determination within the context of a two area model.

The key results of the assessment, based on the author’s preferred (base case) model, are compared to the key specifications from 2020 in the table below. A Tier 3a approach was used to calculate recommended quantities for the 2021 assessment.

The key results from the accepted 2019 assessment are shown in the table below with 2021 specifications rolled over to 2022. The results for Dover sole are based on the author’s base case model and Tier 3a management. A risk matrix approach was used to...

The Gulf of Alaska rex sole stock is assessed every four years and was last assessed in 2017.

The Gulf of Alaska rex sole stock is assessed every four years and was last assessed in 2017. In between the full assessment years, we present an executive summary to recommend harvest levels for the next two years. Please refer to the 2017 full stock assessment report for further information regarding the assessment model (McGilliard and Palsson, 2017. A full stock assessment document with updated assessment and projection model results will be presented in 2021.

The National Standard Guidelines for Fishery Management Plans published by the National Marine Fisheries Service (NMFS) require that a stock assessment and fishery evaluation (SAFE) report be prepared and reviewed annually for each fishery management plan (FMP). The SAFE reports are intended to summarize the best available scientific information concerning the past, present, and possible future condition of the stocks and fisheries under federal management. The FMPs for the groundfish fisheries managed by the Council require that drafts of the SAFE reports be produced each year in time for the December North Pacific Fishery Management Council (Council) meetings.

Rex sole (Glyptocephalus zachirus) are assessed on a biennial stock assessment schedule to coincide with the availability of new survey data. For Gulf of Alaska rex sole in alternate (even) years we present an executive summary to recommend harvest levels for the next two years.

Rex sole (Glyptocephalus zachirus) are assessed on a biennial stock assessment schedule to coincide with the availability of new survey data.

Rex sole (Glyptocephalus zachirus) are assessed on a biennial stock assessment schedule to coincide with the availability of new survey data. Please refer to the 2011 full stock assessment report for further information regarding the assessment model.