Description
Enregistrements de données
Les données de cette ressource données d'échantillonnage ont été publiées sous forme dune Archive Darwin Core (Darwin Core Archive ou DwC-A), le format standard pour partager des données de biodiversité en tant quensemble dun ou plusieurs tableurs de données. Le tableur de données du cœur de standard (core) contient 613 enregistrements.
2 tableurs de données dextension existent également. Un enregistrement dextension fournit des informations supplémentaires sur un enregistrement du cœur de standard (core). Le nombre denregistrements dans chaque tableur de données dextension est illustré ci-dessous.
Cet IPT archive les données et sert donc de dépôt de données. Les données et métadonnées de la ressource sont disponibles pour téléchargement dans la section téléchargements. Le tableau des versions liste les autres versions de chaque ressource rendues disponibles de façon publique et permet de tracer les modifications apportées à la ressource au fil du temps.
Versions
Le tableau ci-dessous naffiche que les versions publiées de la ressource accessibles publiquement.
Comment citer
Les chercheurs doivent citer cette ressource comme suit:
Ribera-Altimir, J., Martí-Comas, A., Puig-Capdevila, A., Santos-Bethencourt, R., Rojas-Garcia, A., Balcells-Surroca, M. (2026). ICATMAR bottom trawl survey data in the NW Mediterranean (commercial and bycatch species). www.icatmar.cat
Droits
Les chercheurs doivent respecter la déclaration de droits suivante:
L’éditeur et détenteur des droits de cette ressource est ICATMAR. Ce travail est sous licence Creative Commons Attribution (CC-BY) 4.0.
Enregistrement GBIF
Cette ressource a été enregistrée sur le portail GBIF, et possède lUUID GBIF suivante : fafbf6ab-a219-464d-8783-940528298b66. ICATMAR publie cette ressource, et est enregistré dans le GBIF comme éditeur de données avec lapprobation du GBIF Spain.
Mots-clé
Fisheries monitoring; Demersal fisheries; Bottom trawling; Mediterranean sea; Catalan coast; ICATMAR; Information Systems; Fisheries monitoring; Demersal fisheries; Bottom trawling; Mediterranean sea; Catalan coast; ICATMAR; Information Systems
Contacts
- Personne De Contact
- Desenvolupador Backend
https://orcid.org/0009-0006-7191-2869
- Personne De Contact
- Head of Information Systems
- Personne De Contact
- Backend Developer
Couverture géographique
Surveys covered the major fishing ports along the Catalan coast in the North Western Mediterranean Sea (N GSA6). The sampling area extends from 40.32°N to 42.40°N latitude and 0.66°E to 3.62°E longitude.
| Enveloppe géographique | Sud Ouest [40,324, 0,662], Nord Est [42,395, 3,616] |
|---|
Couverture temporelle
| Date de début / Date de fin | 2019-01-16 / 2024-12-18 |
|---|
Données sur le projet
The Directorate-General for Maritime Policy and Sustainable Fisheries of the Catalan Government and the Institut de Ciències del Mar (ICM-CSIC) promoted the Institut Català de Recerca per a la Governança del Mar (ICATMAR), an autonomous organization whose main goal is to generate scientific advice to regional, state and European administrations for management purposes. Since 2019, ICATMAR has developed and implemented a fisheries monitoring program that aims to complement the data collection protocol already in place, working at a local scale to gather information on spatial and seasonal variability of the factors that can shape fishing stocks dynamics.
| Titre | Institut Català de Recerca per a la Governança del Mar |
|---|---|
| Identifiant | ICATMAR |
| Financement | Trawl surveys were financed by European Maritime and Fisheries and Aquaculture Fund (EMFAF) and the agreement between the Spanish National Research Council (CSIC) and the Catalan Government (BOE-A-2023-251060). |
| Description du domaine détude / de recherche | The study area comprises the entire Catalan coast, with 580 km of coastline, constitutes the northern half of the GSA 6, which in whole comprises from Cape Creus down to Cartagena (Resolution GFCM/33/2009/2). The spatial distribution of the fishing effort by port shows the local-scale structure of the Catalan bottom trawling sector: the fleet of each port fishes in waters directly off their port, and overlapping among influence areas of the different ports is low (around 10 % in fishing hours per km2, Mingote et al., in prep) and exists only among adjacent ports. We chose the 9 ports with the highest annual revenues which are also equidistant throughout the territory, attending to both hydrographic and geomorphological characteristics of the continental margin (shelf and slope). In the northernmost part of the Catalan coast, the continental shelf is cut by deep submarine canyons that allow for deep-sea fisheries activity while remaining relatively close to the coast. The coast between Arenys de Mar and Tarragona is characterized by the absence of submarine canyons and the influence of densely populated areas such as Barcelona, Vilanova i la Geltrú or Tarragona. The southernmost area of the coast is deeply affected by the discharge of the river Ebre, which generates a delta between L’Ampolla and La Ràpita. The division of the Catalan coast in these three zones responds to the morphometric mesoscale analysis of the margin and has been used in previous faunistic assemblage studies (Carreton M. et al. 2025). |
| Description du design | Sampling trips were carried out on board trawling fishing vessels, with no change to their usual fishing activity, over commercial fishing grounds. Each of the three sampling zones was sampled monthly, with a rotation among the three ports of each zone, resulting in one quarterly sampling at each of the 9 selected ports. This allowed for the monitoring of seasonal patterns throughout the year. Each sampling day included three experimental hauls on board the same vessel, each one at one of the three depth ranges previously explained, within the high-fishing effort areas of each port. Exceptionally, in 2019 and 2020, seven of the Southern zone hauls were conducted in the lower slope. The average depth for each haul was then estimated by calculating an average point between the start and end points of each haul. Mesh size was 40-mm square for all hauls except in Palamós lower slope, where the self-enforced local management measures for the blue and red shrimp fishery require a 50-mm squared mesh (BOE 2018, APM/532/2018). Each haul was GPS-recorded with a start and end point, fishing time and gear width. These measurements were used to calculate the total swept area per haul in order to standardize species biomass and abundance values. The sampling is designed to run a complete cycle throughout a calendar year so that the data are comparable annually, and the data analyzed in this study correspond to the years 2019–2021 (Carreton M. et al. 2025). |
Les personnes impliquées dans le projet:
- Créateur
- Créateur
- Créateur
Méthodes déchantillonnage
Sampling trips were carried out on board trawling fishing vessels, with no change to their usual fishing activity, over commercial fishing grounds. Each of the three sampling zones was sampled monthly, with a rotation among the three ports of each zone, resulting in one quarterly sampling at each of the 9 selected ports. This allowed for the monitoring of seasonal patterns throughout the year. Each sampling day included three experimental hauls on board the same vessel, each one at one of the three depth ranges previously explained, within the high-fishing effort areas of each port. Exceptionally, in 2019 and 2020, seven of the Southern zone hauls were conducted in the lower slope. The average depth for each haul was then estimated by calculating an average point between the start and end points of each haul. Mesh size was 40-mm square for all hauls except in Palamós lower slope, where the self-enforced local management measures for the blue and red shrimp fishery require a 50-mm squared mesh (BOE 2018, APM/532/2018). Each haul was GPS-recorded with a start and end point, fishing time and gear width. These measurements were used to calculate the total swept area per haul in order to standardize species biomass and abundance values. The sampling is designed to run a complete cycle throughout a calendar year so that the data are comparable annually, and the data analyzed in this study correspond to the years 2019–2021 (Carreton M. et al. 2025).
| Etendue de létude | The study area comprises the entire Catalan coast, with 580 km of coastline, constitutes the northern half of the GSA 6, which in whole comprises from Cape Creus down to Cartagena (Resolution GFCM/33/2009/2). The spatial distribution of the fishing effort by port shows the local-scale structure of the Catalan bottom trawling sector: the fleet of each port fishes in waters directly off their port, and overlapping among influence areas of the different ports is low (around 10 % in fishing hours per km2, Mingote et al., in prep) and exists only among adjacent ports. We chose the 9 ports with the highest annual revenues which are also equidistant throughout the territory, attending to both hydrographic and geomorphological characteristics of the continental margin (shelf and slope). In the northernmost part of the Catalan coast, the continental shelf is cut by deep submarine canyons that allow for deep-sea fisheries activity while remaining relatively close to the coast. The coast between Arenys de Mar and Tarragona is characterized by the absence of submarine canyons and the influence of densely populated areas such as Barcelona, Vilanova i la Geltrú or Tarragona. The southernmost area of the coast is deeply affected by the discharge of the river Ebre, which generates a delta between L’Ampolla and La Ràpita. The division of the Catalan coast in these three zones responds to the morphometric mesoscale analysis of the margin and has been used in previous faunistic assemblage studies (Carreton M. et al. 2025). |
|---|---|
| Contrôle qualité | All data collected go through a validation workflow to ensure high quality in their analysis and publishing. Using the data input website to ingest onboard and laboratory sampling data allows having more control of the data, prevents defects and facilitates validation, data availability and system reliability. This database includes parametrized text fields and the numeric fields with data ranges. Different validations are performed during the data input workflow to trigger warnings and detect errors to prevent defects. Finally, the data are displayed in interactive maps and charts to perform visual validations. The interactive maps use the library Leaflet and the interactive charts use the library Chartjs v2.8. At the end of each season, R scripts are executed to check joint data completeness and perform a general data validation (Ribera-Altimir J. et al. 2023). |
Description des étapes de la méthode:
- The fishers sort the catch into two categories: commercial, i.e., individuals of commercial species to be sold in the fish auction, and discarded, i.e., all other organic and inorganic organisms and items. The discarded fraction includes individuals of non-commercial species and/or undersized or damaged individuals of commercial species – as well as natural debris and marine litter. All species of the commercial fraction, including fish, crustaceans and cephalopods among others, are identified and measured on board (total length, cephalothorax length and mantle length, respectively) (Carreton M. et al. 2025).
Citations bibliographiques
- Carreton, M., Galimany, E., Blanco, M., Garriga-Panisello, M., Colmenero, A. I., Balcells, M., Bustos, F., Mingote, M. G., López-Pérez, C., Nos, D., Puigcerver-Segarra, X., Pujol-Baucells, M., Ramírez, J. G., Ribera-Altimir, J., Rico, A. J., Rojas, A., Sala-Coromina, J., Santos-Bethencourt, R., Silvestre, M., … Company, J. B. (2025). Understanding the spatio-temporal variability of fisheries data for better bottom trawling management practices in the Catalan margin (NW Mediterranean Sea). Marine Policy, 172, 106512. https://doi.org/10.1016/J.MARPOL.2024.106512
- Ribera-Altimir, J., Llorach-Tó, G., Sala-Coromina, J., B. Company, J., & Galimany, E. (2023). Fisheries data management systems in the NW Mediterranean: from data collection to web visualization. Database, 2023. https://doi.org/10.1093/DATABASE/BAAD067
- Blanco, M., Nos, D., Lombarte, A., Recasens, L., Company, J. B., & Galimany, E. (2023). Characterization of discards along a wide bathymetric range from a trawl fishery in the NW Mediterranean. Fisheries Research, 258, 106552. https://doi.org/10.1016/J.FISHRES.2022.106552
Métadonnées additionnelles
| Remerciements | |
|---|---|
| Identifiants alternatifs | 10.15470/89uh0e |
| https://ipt.gbif.es/resource?r=bottom_trawl_survey |