seanoe:106948 Hernvann Pierre-Yves DECOD (Ecosystem Dynamics and Sustainability), Institut Agro - Agrocampus Ouest, IFREMER, INRAE, 44311 Nantes, France 2025-09-10 ISO 19115:2003/19139 1.0 Using the ISIS-Fish fisheries dynamics model to explore the consequences on Bay of Biscay demersal fisheries and ecosystem of spatial closures aiming to reduce bycatch of protected species 2025-06-17 2025-09-10 Hernvann Pierre-Yves, Lehuta Sigrid, Mahevas Stephanie (2025). Using the ISIS-Fish fisheries dynamics model to explore the consequences on Bay of Biscay demersal fisheries and ecosystem of spatial closures aiming to reduce bycatch of protected species. SEANOE. https://doi.org/10.17882/106948 The present repository makes available the model, material and outputs of the ISIS-Fish modeling work showcased in the peer-reviewed scientific article by Bastardie et al. 2025. As part of the SEAwise research project (seawiseproject.org), we used an ISIS-Fish database (Mahevas et al 2003, Pelletier et al. 2009, isis-fish.org) previously developed within the MACCO project which describes the mixed demersal fishery in the Bay of Biscay. For this application, the spatial extent of the fishery is the Bay of Biscay, defined here by ICES divisions 8a, 8b and 8d and the resolution chosen is 1/16 ICES statistical rectangle. The biological module (Vajas et al. 2024) includes 7 species of economic interest in the mixed demersal fishery: European hake (Merluccius merluccius), common sole (Solea solea), Norway lobster (Nephrops norvegicus), megrim (Lepidorhombus whiffiagonis), anglerfish (Lophius piscatorius) and two ray species (Raja clavata, Leucoraja naevus). The fishing activities module (Mahevas et al. 2024) is made up of 41 demersal fleets (including all French vessels < 12 meters and > 12 meters fishing in this area, Spanich, UK and Belgium fleets) and 431 métiers (combination of a gear, location and mix of target species) catching these 7 species, as target or bycatch. Monthly effort of a fleet distributes among the possible métiers (those historically practiced). The biological and fishing activity modules are identical to the published version. The original model used here has been calibrated on historical catch data 2015-2018 by tuning accessibility and catchability parameters. In the present application the Bay of Biscay model is used to investigate the spatial- and effort- based fisheries management strategies. Consistently with for a task of the SEAwise project (Bastardie et al. 2024) simulations were conducted from 2021 onwards, projecting the effect of an implementation of 3 different closures from 2022 to 2050, under current fishing effort conditions or in a context of fishing effort reduction. Outcomes of these simulations are averaged over short/medium (10 year horizon) and long-term period (20 year horizon). The data project includes: 1) the database including the biological module and fishing activity module; 2) 8 .properties files, each corresponding to one combination of management measure and closure, to restore the simulations parameters in the ISIS-Fish interface and reproduce the simulation runs; 3) the .java scripts to force effort dynamics and simulate spatio-temporal closures, as well as generate the main output files - they will be called by the ISIS-Fish software once the simulations restored 4) the .rds containing the main outputs of the simulations and the associated .html document displaying the R code to compute the indices of interest at different levels of aggregation and reproduce the figures in Bastardie et al. 2025. All files are provided in the Zip. Associated with this material, a study summary and a readme .docx are provided. The first one provides context on the present work and describes the model and simulations' design. The second provides guidelines to reproduce the simulations and their derived outcomes from the data project material made available in this repository. They are both directly downloadable from this repository and are also copied to the zipped folder containing the data project. All the data are reproducible using isis-fish-4.4.8.1 (isis-fish.org; available at forge.codelutin.com) and R 4.2.0. RICOUARD Antoine VERMARD Youen LECOMTE Jean Baptiste Vajas Pablo Maillard Louis Hernvann Pierre-Yves DECOD (Ecosystem Dynamics and Sustainability), Institut Agro - Agrocampus Ouest, IFREMER, INRAE, 44311 Nantes, France LEHUTA Sigrid DECOD (Ecosystem Dynamics and Sustainability), Institut Agro - Agrocampus Ouest, IFREMER, INRAE, 44311 Nantes, France MAHEVAS Stephanie Marine Biodiversity Exploitation and Conservation (MARBEC), IFREMER, Sète, France https://www.seanoe.org/data/00958/106948/illustration.jpg ISIS-Fish projections workflow mixed fisheries fishing activities fleet dynamics spatial marine protected areas demersal Bay of Biscay ISIS-Fish simulation ecosystem-based fisheries management bycatch SEAwise Fisheries and aquaculture H2020 SEAwise (Agreement: 101000318) Fish ODATIS aggregation parameters and Essential Variable names 2025-07-29 geonetwork.thesaurus.external.theme.NVS.OD1 Fisheries and aquaculture SeaDataNet Parameter Disciplines 2025-07-29 geonetwork.thesaurus.external.parameter.NVS.P08 Simulation data Type de jeux de donnée ODATIS 2024-10-15 geonetwork.thesaurus.local.theme.type_jeux_donnee 10.1016/j.ecolmodel.2003.04.001 10.1016/j.ecolmodel.2009.01.007 ISIS-Fish Database: Life History and Spatial Distribution of Sole, Megrim, Anglerfish, Thornback Skate, and Cuckoo Skate Populations in the Bay of Biscay 2025 SEANOE Vajas Pablo Ricouard Antoine Lecomte Jean Baptiste Brind'Amour Anik Laffargue Pascal Mahevas Stephanie 10.17882/102675 The ISIS-Fish datase of Bay of Biscay mixed demersal fisheries (ISIS-GdG-demersal) : Deliverable R2.3 MACCO project 2024 SEANOE Mahevas Stephanie Ricouard Antoine Serval Auriane Vajas Pablo Lecomte Jean Baptiste 10.17882/102725 An ISIS-Fish database describing monthly spatial dynamics of the Bay of Biscay mixed demersal fishery 2022 SEANOE Vigier Audric Bertignac Michel Mahevas Stephanie 10.17882/86233 oceans -9.299372 0.173522 42.878576 48.708403 2021 2050 DOC, DOCX DOCX, .RDS, .HTML, .JAVA https://www.seanoe.org/data/00958/106948/data/120228.docx WWW:DOWNLOAD-1.0-link--download Readme - Description of the available material and Guidance to replicate ISIS-Fish runs & analyses - 40 KB https://www.seanoe.org/data/00958/106948/data/120229.docx WWW:DOWNLOAD-1.0-link--download Study Summary - Describes the ISIS-Fish model and simulated scenarios - 180 KB https://www.seanoe.org/data/00958/106948/data/120320.zip WWW:DOWNLOAD-1.0-link--download descriptions, scripts and processed data ISIS-Fish database, ISIS-Fish files to run simulations, processed outputs, associated documentation - 3 MB https://doi.org/10.17882/106948 WWW:LINK-1.0-http--metadata-URL DOI of the product https://www.seanoe.org/data/00958/106948/ rel-canonical Seanoe