Using multi-species surplus productio us

• Main Author: An Ecos
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: G; Bering Sea; Gulf of Alaska; Tomlinson; Schaefer; Alaska; Aleutian Islands
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.569.5244; http://www.pmel.noaa.gov/foci/publications/2006/muet0567.pdf

We used t stoc the Gulf of A urplu across stock s pro production models (Graham-Schaefer and Pella-Tomlinson) to the observed relationships to estimate maximum multi-species surplus production (equivalent to maximum sustainable yield) of the groundfish complexes in these ecosystems. Maximum multi-species surplus production was estimated to be approximately 2.5 × 106 t in the Bering Sea/Aleutian Islands and 330 × 103 t in the Gulf of Alaska. These point estimates were smaller than the sum of single-species MSY proxies from recent stock assessments, and estimates for the Gulf of Alaska were much smaller than earlier estimates that were used to specify optimum yield ranges for the Gulf of Alaska groundfish complex. Therefore, optimum yield ranges for the Gulf of A We furthe models with the positive the shelf. Si salinities in groundfish c