Data

Qualitative network model outputs and code: HIMI Patagonian toothfish fishery, stock and ecosystem responses to change

Name: Qualitative network model outputs and code: HIMI Patagonian toothfish fishery, stock and ecosystem responses to change
Published: 2025

University of Tasmania, Australia

Ward, Delphi ; Hill, Nicole ; Corney, Stuart ; Melbourne-Thomas, Jessica ; Welsford, Dirk ; Arangio, Rhys ; McNeill, Malcolm ; Wotherspoon, Simon ; Ziegler, Philippe

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ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=info:doi10.25959/NAMR-VS98&rft.title=Qualitative network model outputs and code: HIMI Patagonian toothfish fishery, stock and ecosystem responses to change&rft.identifier=10.25959/NAMR-VS98&rft.description=This dataset contains the supplementary data and code accompanying the publication: Ward, D., Hill, N., Melbourne-Thomas, J., Welsford, D., Arangio, R., McNeill, M., Wotherspoon, S., Ziegler, P., Corney, S. (2025) Exploring mechanisms of change in a Southern Ocean fishery with a co-produced network model, ICES Journal of Marine Science. The study aimed to elucidate likely responses of the system to change, and mechanisms by which environmental, ecological or fishery behavioural changes could affect catch rates and toothfish stocks in the Heard and McDonald Islands (HIMI) fishing area. In the study, we co-developed a set of 128 qualitative network models of the Heard and McDonald Islands (HIMI) Patagonian toothfish fishery–stock–ecosystem interactions system with knowledge holders from industry and science. These different model versions capture different possible configurations of interactions for which the sign of the effects (positive or negative) are unknown. For each model versions, we simulated 10,000 quantitative instances of the qualitative model. We analysed these model outputs to understand 1) mean qualitative responses of system components (nodes) in 8 test scenarios (press increases in environmental, fishery, or ecosystem nodes); 2) how ‘unknown’ effect signs affected qualitative responses of key nodes to change; and 3) relationships between responses and the strength of effects originating from nodes being perturbed. Please refer to Ward et al. (2025) for more detailed description of the methodology and findings, and the README file for description of data and code contained in this repository.Maintenance and Update Frequency: notPlannedStatement: Qualitative network models (QNMs) were co-developed through an iterative process of transdisciplinary knowledge co-production, testing and refinement. The models were created in the Dia software package, read into R, and simulated using the R package QPress.&rft.creator=Ward, Delphi &rft.creator=Hill, Nicole &rft.creator=Corney, Stuart &rft.creator=Melbourne-Thomas, Jessica &rft.creator=Welsford, Dirk &rft.creator=Arangio, Rhys &rft.creator=McNeill, Malcolm &rft.creator=Wotherspoon, Simon &rft.creator=Ziegler, Philippe &rft.date=2025&rft.coverage=westlimit=70.542713; southlimit=-54.375625; eastlimit=75.476163; northlimit=-51.898388&rft.coverage=westlimit=70.542713; southlimit=-54.375625; eastlimit=75.476163; northlimit=-51.898388&rft_rights=Data, products and services from IMAS are provided as is without any warranty as to fitness for a particular purpose.&rft_rights=This dataset is the intellectual property of the University of Tasmania (UTAS) through the Institute for Marine and Antarctic Studies (IMAS).&rft_rights=&rft_rights= https://creativecommons.org/licenses/by/4.0/&rft_rights=https://licensebuttons.net/l/by/4.0/88x31.png&rft_rights=WWW:LINK-1.0-http--related&rft_rights=License Graphic&rft_rights=Creative Commons Attribution 4.0 International License&rft_rights=CC-BY&rft_rights=4.0&rft_rights=http://creativecommons.org/international/&rft_rights=WWW:LINK-1.0-http--related&rft_rights=WWW:LINK-1.0-http--related&rft_rights=License Text&rft_rights=Cite data as: Ward, D., Hill, N., Melbourne-Thomas, J., Welsford, D., Arangio, R., McNeill, M., Wotherspoon, S., Ziegler, P., & Corney, S. (2025). Qualitative network model outputs and code: HIMI Patagonian toothfish fishery, stock and ecosystem responses to change [Data set]. Institute for Marine and Antarctic Studies. https://doi.org/10.25959/NAMR-VS98&rft_rights=Creative Commons Attribution 4.0 International License http://creativecommons.org/licenses/by/4.0&rft_subject=oceans&rft_subject=biota&rft_subject=qualitative network modelling&rft_subject=QPress&rft_subject=participatory modelling&rft_subject=fisheries-ecosystem interactions&rft_subject=sustainable fisheries&rft_subject=Patagonian toothfish&rft_subject=Dissostichus eleginoides&rft_subject=FISHERIES&rft_subject=MARINE ECOSYSTEMS&rft_subject=CLIMATE CHANGE IMPACT ASSESSMENT MODELS&rft_subject=EARTH SCIENCE SERVICES&rft_subject=MODELS&rft_subject=Global / Oceans | Global / Oceans | Southern Ocean&rft_subject=Offshore Islands (Australia) | Offshore Islands (Australia) | Heard & McDonald Islands&rft_subject=Marine Planning Regions (Australia) | Marine Planning Regions (Australia) | Kerguelen&rft.type=dataset&rft.language=English Access the data

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Data, products and services from IMAS are provided "as is" without any warranty as to fitness for a particular purpose.

This dataset is the intellectual property of the University of Tasmania (UTAS) through the Institute for Marine and Antarctic Studies (IMAS).

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Cite data as: Ward, D., Hill, N., Melbourne-Thomas, J., Welsford, D., Arangio, R., McNeill, M., Wotherspoon, S., Ziegler, P., & Corney, S. (2025). Qualitative network model outputs and code: HIMI Patagonian toothfish fishery, stock and ecosystem responses to change [Data set]. Institute for Marine and Antarctic Studies. https://doi.org/10.25959/NAMR-VS98

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Brief description

This dataset contains the supplementary data and code accompanying the publication: Ward, D., Hill, N., Melbourne-Thomas, J., Welsford, D., Arangio, R., McNeill, M., Wotherspoon, S., Ziegler, P., Corney, S. (2025) Exploring mechanisms of change in a Southern Ocean fishery with a co-produced network model, ICES Journal of Marine Science. The study aimed to elucidate likely responses of the system to change, and mechanisms by which environmental, ecological or fishery behavioural changes could affect catch rates and toothfish stocks in the Heard and McDonald Islands (HIMI) fishing area. In the study, we co-developed a set of 128 qualitative network models of the Heard and McDonald Islands (HIMI) Patagonian toothfish fishery–stock–ecosystem interactions system with knowledge holders from industry and science. These different model versions capture different possible configurations of interactions for which the sign of the effects (positive or negative) are unknown. For each model versions, we simulated 10,000 quantitative instances of the qualitative model. We analysed these model outputs to understand 1) mean qualitative responses of system components (nodes) in 8 test scenarios (press increases in environmental, fishery, or ecosystem nodes); 2) how ‘unknown’ effect signs affected qualitative responses of key nodes to change; and 3) relationships between responses and the strength of effects originating from nodes being perturbed. Please refer to Ward et al. (2025) for more detailed description of the methodology and findings, and the README file for description of data and code contained in this repository.

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Maintenance and Update Frequency: notPlanned

Statement: Qualitative network models (QNMs) were co-developed through an iterative process of transdisciplinary knowledge co-production, testing and refinement. The models were created in the Dia software package, read into R, and simulated using the R package QPress.

Notes

Credit
Fisheries Research and Development Corporation (FRDC) grant FRDC2018-133. Australian Antarctic Division.

Issued: 28 05 2025

Data time period: 2017-03-01 to 2021-05-31

This dataset is part of a larger collection

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text: westlimit=70.542713; southlimit=-54.375625; eastlimit=75.476163; northlimit=-51.898388

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Other Information

(README - description of data package [PDF])

uri : https://data.imas.utas.edu.au/attachments/b2e76be3-da91-498d-af02-13ac8a5a8b60/_README_Ward_etal_2025.pdf External Link

(DATA ACCESS - Full download package [2.6 GB .zip])

uri : https://data.imas.utas.edu.au/attachments/b2e76be3-da91-498d-af02-13ac8a5a8b60/Ward_et_al_2025_ICES-JMS_SuppMat_code_data_FULL.zip External Link

Note: excludes dia models (/all_128_models/) - not needed to run model. Also excludes savedsims4.Rdata (/All_simulations_combined/) called for in script #4 (large filesize). For the complete data package, see link #1. (DATA ACCESS - smaller data package excluding large elements)

uri : https://data.imas.utas.edu.au/attachments/b2e76be3-da91-498d-af02-13ac8a5a8b60/Ward_et_al_2025_ICES-JMS_SuppMat_code_data_SELECT.zip External Link

(Browse and selectively download files from data package)

uri : https://data.imas.utas.edu.au/attachments/b2e76be3-da91-498d-af02-13ac8a5a8b60 External Link

Ward, D., Hill, N., Melbourne-Thomas, J., Welsford, D., Arangio, R., McNeill, M., Wotherspoon, S., Ziegler, P., Corney, S. (2025) Exploring mechanisms of change in a Southern Ocean fishery with a co-produced network model, ICES Journal of Marine Science. (Associated publication)

doi : https://dx.doi.org/10.1101/2024.10.23.619600 DOI Link

Identifiers

global : b2e76be3-da91-498d-af02-13ac8a5a8b60
DOI : 10.25959/NAMR-VS98