Working Group on Multispecies Assessment Methods (WGSAM; outputs from 2020 meeting)

Baudron, Alan; Belgrano, Andrea; Cormon, Xochitl; De Castro, Francisco; Del Santo O´Neill, Thomas; Howell, Daniel; Kulatska, Nataliia; Lehuta, Sigrid; Lucey, Sean; McGregor, Vidette; Püts, Miriam GND; Rindorf, Anna; Jacobsen, Nis Sand; Sonjudottir, Anika; Soudijn, Floor; Spence, Michael; Bartolino, Valerio; Gaichas, Sarah; Kempf, Alexander GND; Vinther, Morten; et al.

The Working Group on Multispecies Assessment Methods (WGSAM) aims at enabling research on predator-prey interactions for developing advice on the ecosystem approach to fisheries management. This report details results related to WGSAM term of reference B: “Update of key-runs (standardized model runs updated with recent data) of multispecies and ecosystem models for different ICES regions”. Multispecies model key-runs are used in ICES advice processes, and WGSAM provides critical expert review of these key-runs to recommend appropriate use of results. Although key-run reviews have been conducted in the past, requests for reviews are increasing. Therefore, WGSAM first formalized a consistent set of review criteria to conduct key-run reviews. These are outlined in section 2 of this report and are posted online ( WGSAM then applied these review criteria to one key-run for the North Sea ecosystem. The review is detailed in section 3 of this report. As the review criteria were applied, WGSAM also noted any difficulties with the review process in order to further refine the review criteria and to make future key-run reviews more efficient and effective. WGSAM recommends the use of natural mortality estimates from the North Sea SMS key-run for use in single species stock assessment models of North Sea cod, haddock, herring, Norway pout, southern North Sea sandeel, northern North Sea sandeel, sprat, and whiting.



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Baudron, Alan / Belgrano, Andrea / Cormon, Xochitl / et al: Working Group on Multispecies Assessment Methods (WGSAM; outputs from 2020 meeting). Copenhagen 2021. ICES.


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