Assessment of the Pacific Ocean Perch Stock in the Gulf of Alaska
September 19, 2018
Gulf of Alaska (GOA) rockfish are assessed on a biennial stock assessment schedule to coincide with new survey data. We use a separable age-structured model as the primary assessment tool for GOA Pacific ocean perch.
This consists of an assessment model, which uses survey and fishery data to generate a historical time series of population estimates and a projection model, which uses results from the assessment model to predict future population estimates and recommended harvest levels. For Gulf of Alaska rockfish in alternate (even) years, we present an executive summary to recommend harvest levels for the next (odd) year. For this off-cycle year, we only updated the 2009 projection model estimates with revised catch data for 2009 and a new catch estimate for 2010.