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Seaweed Handling and Processing: Guidelines for Alaska

This guide is designed to help individuals and companies better understand what’s involved as they decide whether to enter the seaweed processing industry, and to provide some industry standards in the manufacturing or processing of kelp. Learn more...

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This is part of Fishery Stock Assessment Models

Description

An age-structured production model (ASPM) has been used by the International Commission for the Conservation of Atlantic Tunas for the assessments of some stocks. That model is sometimes preferable to traditional biomass-based surplus production models because it can accommodate age-structured indices of relative abundance. The traditional ASPM estimates a deterministic stock-recruitment relationship, a property that may result in inconsistencies between the estimated level of recruitment and the observed level of catches. In this work we relax the deterministic assumption by incorporating stochasticity in recruitment around the deterministic predictions as a first order, autoregressive time-series process. We use data for western Atlantic bluefin tuna to contrast the deterministic and stochastic model fits.

Item details

• Item number: AK-SG-98-01v
• Year: 1998
• DOI: https://doi.org/10.4027/fsam.1998.22

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