Report of the Working Group on Multispecies Assessment Methods (WGSAM)

Alan Baudron; Valerio Bartolino; Christopher Griffiths; Floor Soudijn; Francisco De Castro; Gustav W Delius; Howard Townsend; Markus Varlund Strange; Michael A. Spencer; Michael Thomson; Morten Vinther; Niamh Esmonde; Nis Sand Jacobsen; Pierre Yves Hernvann; Robert Thorpe; Sarah Gaichas; Thomas Bartos; Tyler Eddy; Vidette McGregor

Report of the Working Group on Multispecies Assessment Methods (WGSAM)

Alan Baudron, Valerio Bartolino, Christopher Griffiths, Floor Soudijn, Francisco De Castro, Gustav W Delius, Howard Townsend, Markus Varlund Strange, Michael A. Spencer, Michael Thomson, Morten Vinther, Niamh Esmonde, Nis Sand Jacobsen, Pierre Yves Hernvann, Robert Thorpe, Sarah Gaichas, Thomas Bartos, Tyler Eddy, Vidette McGregor

Mathematics

Research output: Book/Report › Commissioned report

Abstract

The Working Group on Multispecies Assessment Methods (WGSAM) aims to advance the use of knowledge on predator-prey interactions for fisheries and ecosystem management. This report summarises the achievements of a 3-year cycle, focusing on the evaluation of key-runs and the skill assessment of multispecies models.

WGSAM released key-run models for various ICES regions, including the North Sea, Baltic Sea, and Georges Bank. The models for the North Sea and Baltic Sea provided updated estimates of predation mortality for key commercial stocks, which have been integrated into stock assessments.

Methods to assess the skill of multispecies models were established, focusing on understanding model prediction differences, choosing appropriate criteria, and comparing modelled dynamics with true dynamics. A publicly available simulated dataset was developed for skill assessment and model comparison.

Approaches for generating advice by comparing and combining multiple models were evaluated, including the R-package “EcoEnsemble” and methods for combining models with multiple drivers. Further developments included the "FishStomachs" R-package for stomach contents data, the MFDB data-handling package, and the growth of multispecies and ecosystem models. Efforts also focused on the impact of temperature on marine ecosystems, linking fisheries management with Good Environmental Status, developing new foodweb indicators, and assessing management goals and harvest control rules.

Original language	English
Publisher	ICES
Commissioning body	ICES
Number of pages	77
Publication status	Published - 27 Nov 2024

Publication series

Name	ICES Scientific Reports
Publisher	ICES
No.	99
Volume	6
ISSN (Electronic)	2618-1371

Access to Document

https://ices-library.figshare.com/articles/report/Working_Group_on_Multispecies_Assessment_Methods_WGSAM_/27919473?file=50847189

Cite this

Baudron, A., Bartolino, V., Griffiths, C., Soudijn, F., De Castro, F., Delius, G. W., Townsend, H., Varlund Strange, M., Spencer, M. A., Thomson, M., Vinther, M., Esmonde, N., Sand Jacobsen, N., Hernvann, P. Y., Thorpe, R., Gaichas, S., Bartos, T., Eddy, T., & McGregor, V. (2024). Report of the Working Group on Multispecies Assessment Methods (WGSAM). (ICES Scientific Reports; Vol. 6, No. 99). ICES. https://ices-library.figshare.com/articles/report/Working_Group_on_Multispecies_Assessment_Methods_WGSAM_/27919473?file=50847189

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abstract = "The Working Group on Multispecies Assessment Methods (WGSAM) aims to advance the use of knowledge on predator-prey interactions for fisheries and ecosystem management. This report summarises the achievements of a 3-year cycle, focusing on the evaluation of key-runs and the skill assessment of multispecies models.WGSAM released key-run models for various ICES regions, including the North Sea, Baltic Sea, and Georges Bank. The models for the North Sea and Baltic Sea provided updated estimates of predation mortality for key commercial stocks, which have been integrated into stock assessments.Methods to assess the skill of multispecies models were established, focusing on understanding model prediction differences, choosing appropriate criteria, and comparing modelled dynamics with true dynamics. A publicly available simulated dataset was developed for skill assessment and model comparison.Approaches for generating advice by comparing and combining multiple models were evaluated, including the R-package “EcoEnsemble” and methods for combining models with multiple drivers. Further developments included the {"}FishStomachs{"} R-package for stomach contents data, the MFDB data-handling package, and the growth of multispecies and ecosystem models. Efforts also focused on the impact of temperature on marine ecosystems, linking fisheries management with Good Environmental Status, developing new foodweb indicators, and assessing management goals and harvest control rules.",

author = "Alan Baudron and Valerio Bartolino and Christopher Griffiths and Floor Soudijn and {De Castro}, Francisco and Delius, {Gustav W} and Howard Townsend and {Varlund Strange}, Markus and Spencer, {Michael A.} and Michael Thomson and Morten Vinther and Niamh Esmonde and {Sand Jacobsen}, Nis and Hernvann, {Pierre Yves} and Robert Thorpe and Sarah Gaichas and Thomas Bartos and Tyler Eddy and Vidette McGregor",

year = "2024",

month = nov,

day = "27",

language = "English",

series = "ICES Scientific Reports",

publisher = "ICES",

number = "99",

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Baudron, A, Bartolino, V, Griffiths, C, Soudijn, F, De Castro, F, Delius, GW, Townsend, H, Varlund Strange, M, Spencer, MA, Thomson, M, Vinther, M, Esmonde, N, Sand Jacobsen, N, Hernvann, PY, Thorpe, R, Gaichas, S, Bartos, T, Eddy, T & McGregor, V 2024, Report of the Working Group on Multispecies Assessment Methods (WGSAM). ICES Scientific Reports, no. 99, vol. 6, ICES. <https://ices-library.figshare.com/articles/report/Working_Group_on_Multispecies_Assessment_Methods_WGSAM_/27919473?file=50847189>

TY - BOOK

T1 - Report of the Working Group on Multispecies Assessment Methods (WGSAM)

AU - Baudron, Alan

AU - Bartolino, Valerio

AU - Griffiths, Christopher

AU - Soudijn, Floor

AU - De Castro, Francisco

AU - Delius, Gustav W

AU - Townsend, Howard

AU - Varlund Strange, Markus

AU - Spencer, Michael A.

AU - Thomson, Michael

AU - Vinther, Morten

AU - Esmonde, Niamh

AU - Sand Jacobsen, Nis

AU - Hernvann, Pierre Yves

AU - Thorpe, Robert

AU - Gaichas, Sarah

AU - Bartos, Thomas

AU - Eddy, Tyler

AU - McGregor, Vidette

PY - 2024/11/27

Y1 - 2024/11/27

N2 - The Working Group on Multispecies Assessment Methods (WGSAM) aims to advance the use of knowledge on predator-prey interactions for fisheries and ecosystem management. This report summarises the achievements of a 3-year cycle, focusing on the evaluation of key-runs and the skill assessment of multispecies models.WGSAM released key-run models for various ICES regions, including the North Sea, Baltic Sea, and Georges Bank. The models for the North Sea and Baltic Sea provided updated estimates of predation mortality for key commercial stocks, which have been integrated into stock assessments.Methods to assess the skill of multispecies models were established, focusing on understanding model prediction differences, choosing appropriate criteria, and comparing modelled dynamics with true dynamics. A publicly available simulated dataset was developed for skill assessment and model comparison.Approaches for generating advice by comparing and combining multiple models were evaluated, including the R-package “EcoEnsemble” and methods for combining models with multiple drivers. Further developments included the "FishStomachs" R-package for stomach contents data, the MFDB data-handling package, and the growth of multispecies and ecosystem models. Efforts also focused on the impact of temperature on marine ecosystems, linking fisheries management with Good Environmental Status, developing new foodweb indicators, and assessing management goals and harvest control rules.

AB - The Working Group on Multispecies Assessment Methods (WGSAM) aims to advance the use of knowledge on predator-prey interactions for fisheries and ecosystem management. This report summarises the achievements of a 3-year cycle, focusing on the evaluation of key-runs and the skill assessment of multispecies models.WGSAM released key-run models for various ICES regions, including the North Sea, Baltic Sea, and Georges Bank. The models for the North Sea and Baltic Sea provided updated estimates of predation mortality for key commercial stocks, which have been integrated into stock assessments.Methods to assess the skill of multispecies models were established, focusing on understanding model prediction differences, choosing appropriate criteria, and comparing modelled dynamics with true dynamics. A publicly available simulated dataset was developed for skill assessment and model comparison.Approaches for generating advice by comparing and combining multiple models were evaluated, including the R-package “EcoEnsemble” and methods for combining models with multiple drivers. Further developments included the "FishStomachs" R-package for stomach contents data, the MFDB data-handling package, and the growth of multispecies and ecosystem models. Efforts also focused on the impact of temperature on marine ecosystems, linking fisheries management with Good Environmental Status, developing new foodweb indicators, and assessing management goals and harvest control rules.