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Multi-fleet stock assessment modelling with the Grym


Liu, J and Wotherspoon, S and Maschette, D, Multi-fleet stock assessment modelling with the Grym, Commission for the Conservation of Antarctic Marine Living Resources, 11 June (2021) [Refereed Conference Paper]

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Grym is an implementation of the Generalized Yield Model in R that provides greater transparency and extensibility (Maschette et al., 2020, Wotherspoon & Maschette, 2020). This paper describes an extension of the Grym to permit multiple fleets within a season, allowing the Grym to model more complex fishery behavior and evolving fisheries practices. Results from the expansion are compared with existing analyses from the Grym. The model can include vessels using different gear types (e.g. trawl and longline) or identical selectivity. An example is presented for Patagonian toothfish.

Item Details

Item Type:Refereed Conference Paper
Keywords:krill assessment
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Fisheries sciences
Research Field:Fisheries management
Objective Division:Animal Production and Animal Primary Products
Objective Group:Fisheries - wild caught
Objective Field:Wild caught crustaceans (excl. rock lobster and prawns)
UTAS Author:Wotherspoon, S (Dr Simon Wotherspoon)
UTAS Author:Maschette, D (Mr Dale Maschette)
ID Code:155013
Year Published:2021
Deposited By:Sustainable Marine Research Collaboration
Deposited On:2023-01-23
Last Modified:2023-01-25

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