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Multi-fleet stock assessment modelling with the Grym

journal contribution
posted on 2024-06-05, 07:02 authored by Jiaxin Liu, Simon Wotherspoon, Dale MaschetteDale Maschette

Grym is an open-source implementation of the generalised yield model in R that
provides greater transparency and extensibility (Maschette et al., 2023; Wotherspoon and
Maschette, 2020). This paper describes an extension of the Grym to permit modelling
of multiple fleets within a season, allowing the Grym implementation to model more
complex fishery behavior and evolving fisheries practices. Results from the extension are
compared with existing analyses from the Grym. The model can include vessels using
different or identical selectivities with an example presented for Patagonian toothfish.

Funding

Assessment and monitoring of Australia's finfish fisheries in the Southern Ocean : Department of Environment and Energy (Cwth)

Science to support Australias Southern Ocean Fisheries 2021-2023 : Fisheries Research & Development Corporation | 2020-095

History

Sub-type

  • Article

Publication title

CCAMLR Science

Volume

24

Pagination

94-109

eISSN

1023-4063

ISSN

1023-4063

Department/School

Ecology and Biodiversity, Sustainable Marine Research Collaboration

Publisher

Commission for the Conservation of Antartic Marine Living Resources

Rights statement

Copyright 2024 the Commission for the Conservation of Antarctic Marine Living Resources 2024. https://www.ccamlr.org/en/organisation/copyright-notice

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