IMAS Metadata Catalogue
Qualitative network model outputs and code: HIMI Patagonian toothfish fishery, stock and ecosystem responses to change
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.
Simple
Identification info
- Date (Publication)
- 2025-05-28T00:00:00
Identifier
- Title
- Information and documentation - Digital object identifier system
- Citation identifier
-
ISO 26324:2012
- Code
- 10.25959/NAMR-VS98
- Codespace
- doi.org
- Description
- Digital Object Identifier (DOI)
Resource provider
Principal investigator
Principal investigator
Principal investigator
Collaborator
Collaborator
- Credit
- Fisheries Research and Development Corporation (FRDC) grant FRDC2018-133. Australian Antarctic Division.
- Status
- Completed
Point of contact
Point of contact
Point of contact
- Topic category
-
- Oceans
- Biota
Extent
))
Temporal extent
- Time period
- 2017-03-01 2021-05-31
- Maintenance and update frequency
- Not planned
- Keywords (Theme)
-
- qualitative network modelling
- QPress
- participatory modelling
- fisheries-ecosystem interactions
- sustainable fisheries
- Keywords (Taxon)
-
- Patagonian toothfish
- Dissostichus eleginoides
- Global Change Master Directory Earth Science Keywords, Version 8.5
Resource constraints
- Use limitation
- Data, products and services from IMAS are provided "as is" without any warranty as to fitness for a particular purpose.
Resource constraints
- Other constraints
- This dataset is the intellectual property of the University of Tasmania (UTAS) through the Institute for Marine and Antarctic Studies (IMAS).
Resource constraints
- Linkage
-
https://licensebuttons.net/l/by/4.0/88x31.png
License Graphic
- Title
- Creative Commons Attribution 4.0 International License
- Alternate title
- CC-BY
- Edition
- 4.0
- Website
-
https://creativecommons.org/licenses/by/4.0/
License Text
- Other constraints
- 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
- Language
- English
- Character encoding
- UTF8
- Supplemental Information
- Ward, D., Hill, N., Melbourne-Thomas, J., Welsford, D., Arangio, R., McNeill, M., Wotherspoon, S., Ziegler, P., Corney, S., Exploring mechanisms of change in a Southern Ocean fishery with a co-produced network model, ICES Journal of Marine Science, Volume 82, Issue 7, July 2025, fsaf095. doi:0.1093/icesjms/fsaf095
Content Information
- Content type
- Physical measurement
Distribution Information
- OnLine resource
-
README - description of data package [PDF]
- OnLine resource
-
DATA ACCESS - Full download package [2.6 GB .zip]
- OnLine resource
-
DATA ACCESS - smaller data package excluding large elements
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.
- OnLine resource
-
Browse and selectively download files from data package
- OnLine resource
-
Associated publication
Ward, D., Hill, N., Melbourne-Thomas, J., Welsford, D., Arangio, R., McNeill, M., Wotherspoon, S., Ziegler, P., Corney, S., Exploring mechanisms of change in a Southern Ocean fishery with a co-produced network model, ICES Journal of Marine Science, Volume 82, Issue 7, July 2025, fsaf095. doi:10.1093/icesjms/fsaf095
Resource lineage
- 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.
- Hierarchy level
- Dataset
- Hierarchy level
- Dataset
Metadata
- Metadata identifier
-
urn:uuid/b2e76be3-da91-498d-af02-13ac8a5a8b60
- Language
- English
- Character encoding
- UTF8
Type of resource
- Resource scope
- Dataset
- Name
- IMAS Dataset level record
- Metadata linkage
-
https://metadata.imas.utas.edu.au/geonetwork/srv/eng/catalog.search#/metadata/b2e76be3-da91-498d-af02-13ac8a5a8b60
Point of truth URL of this metadata record
- Date info (Creation)
- 2025-05-28T00:00:00
- Date info (Revision)
- 2025-07-03T10:39:57
Metadata standard
- Title
- ISO 19115-3:2018
Overviews
Spatial extent
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