Description
This is the OBIS extraction of the Ocean Tracking Network and Technical University of Denmark (DTU) Decadal tracking of Atlantic Bluefin Tuna, consisting of the release tagging metadata, i.e. the location and date when the tagged animal was released, and summarized detection events of tagged individuals. If readers are interested in the source dataset they may also inquire with the project PIs as listed here or on the OTN web site (https://members.oceantrack.org/project?ccode=BFTDK).
Abstract:In 1930-1950, bluefin tuna were commercially fished in Denmark and Sweden. Landings were several hundred tonnes per year, with a peak of 2000t in Sweden in 1942. Fishing continued in the next two decades and then it gradually disappeared. Sport fishing for bluefin tuna in the Kattegat and the Sound continued until the 1960s. But then, bluefin tuna catches became increasingly rare. After decades of absence, bluefin tuna have recently been sighted again in the Northeastern Atlantic, inter alia off the coast of Bohuslän and in the Skagerrak and Kattegat. In 2016 and 2017, large schools of several hundred large individuals were observed. These adult fish hunted mackerel and herring during late summer and autumn. The reasons for the return and origin of the bluefin tuna in the North Sea-Skagerrak-Kattegat are unknown. This project will use electronic tags to help understand its migration patterns and behavior, avoid unwanted bycatch and support sustainable management of the stock. Attaching long life acoustic tags holds the potential to observe transatlantic migration as well as repeatability of the migratory pattern, by using the OTN network of receivers.
Enregistrements de données
Les données de cette ressource données d'échantillonnage ont été publiées sous forme d'une Archive Darwin Core (Darwin Core Archive ou DwC-A), le format standard pour partager des données de biodiversité en tant qu'ensemble d'un ou plusieurs tableurs de données. Le tableur de données du cœur de standard (core) contient 3 enregistrements.
2 tableurs de données d'extension existent également. Un enregistrement d'extension fournit des informations supplémentaires sur un enregistrement du cœur de standard (core). Le nombre d'enregistrements dans chaque tableur de données d'extension 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 n'affiche que les versions publiées de la ressource accessibles publiquement.
Comment citer
Les chercheurs doivent citer cette ressource comme suit:
Aarestrup, K. 2018. Decadal tracking of Atlantic Bluefin Tuna. Accessed via the Ocean Tracking Network OBIS IPT on INSERT DATE
Droits
Les chercheurs doivent respecter la déclaration de droits suivante:
L’éditeur et détenteur des droits de cette ressource est Ocean Tracking Network. Ce travail est sous licence Creative Commons Attribution (CC-BY) 4.0.
Enregistrement GBIF
Cette ressource n'a pas été enregistrée sur le portail GBIF
Mots-clé
ACOUSTIC TAGS; EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > FISH; Occurrence; Samplingevent
Données externes
Les données de la ressource sont disponibles dans d'autres formats
| Decadal tracking of Atlantic Bluefin Tuna | https://members.oceantrack.org/project?ccode=BFTDK ASCII HTM |
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Contacts
- Créateur ●
- Personne De Contact
- Data Manager
- Dalhousie University
- +1 (902) 494-4101
- Fournisseur De Contenu ●
- Chercheur Principal
http://orcid.org/0000-0001-8521-6270
- Fournisseur De Contenu
- Fournisseur De Contenu
Couverture géographique
REGION HOVEDSTADEN
| Enveloppe géographique | Sud Ouest [57,96, 10,75], Nord Est [58,28, 11,09] |
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Couverture temporelle
| Date de début | 2018-08-24 |
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Données sur le projet
In 1930-1950, bluefin tuna were commercially fished in Denmark and Sweden. Landings were several hundred tonnes per year, with a peak of 2000t in Sweden in 1942. Fishing continued in the next two decades and then it gradually disappeared. Sport fishing for bluefin tuna in the Kattegat and the Sound continued until the 1960s. But then, bluefin tuna catches became increasingly rare. After decades of absence, bluefin tuna have recently been sighted again in the Northeastern Atlantic, inter alia off the coast of Bohuslän and in the Skagerrak and Kattegat. In 2016 and 2017, large schools of several hundred large individuals were observed. These adult fish hunted mackerel and herring during late summer and autumn. The reasons for the return and origin of the bluefin tuna in the North Sea-Skagerrak-Kattegat are unknown. This project will use electronic tags to help understand its migration patterns and behavior, avoid unwanted bycatch and support sustainable management of the stock. Attaching long life acoustic tags holds the potential to observe transatlantic migration as well as repeatability of the migratory pattern, by using the OTN network of receivers.
| Titre | Decadal tracking of Atlantic Bluefin Tuna |
|---|---|
| Financement | OTN is a research and technology development initiative headquartered at Dalhousie University, in Halifax Nova Scotia. OTN is funded by the Canada Foundation for Innovation (CFI) and is grateful to have once received funding from the Natural Sciences and Engineering Research Council of Canada (NSERC) and the Social Sciences and Engineering Research Council of Canada (SSHRC). OTN is also grateful for the continued support from Research Nova Scotia, and OTN's host institution, Dalhousie University. |
| Description du domaine d'étude / de recherche | No study area description for this project was provided to OTN for publication. |
| Description du design | A wide range of aquatic species are tagged with small electronic transmitters, surgically implanted or attached externally, which can operate for up to 20 years. Acoustic receivers arranged in line on the ocean floor as well as attached to buoys, gliders and large animals (e.g. grey seals) pick up the coded acoustic signals from these tags identifying each tagged sea creature that passes within half a kilometer of the receiver. Data collected by these listening stations are subsequently uploaded to one of many compatible data nodes, adding to the reach of an intercompatible network of networks designed and maintained by the Ocean Tracking Network, producing current and reliable records for every part of the globe. Certain classes of electronic tags and listening equipment (receivers) may also be outfitted or co-located with sensors to measure the ocean's temperature, depth, salinity, currents, chemistry, and other properties. |
Les personnes impliquées dans le projet:
Méthodes d'échantillonnage
Acoustic tags released.
| Etendue de l'étude | Program started 2018-08-24 and ran until |
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| Contrôle qualité | OTN species names are verified using the World Register of Marine Species (WoRMS). If species names on new data cannot be verified against (a) known valid names in OTN, and/or (b) WoRMs the Data Provider will be notified so they can check they are correct. Names that cannot be placed after checking with WoRMS are, where possible, placed on the basis of other authoritative sources, such as the Fishbase or ITIS; and once completely verified a request will be sent to WoRMS for addition of the verified species name. http://members.oceantrack.org/data/discovery/byspecies |
Description des étapes de la méthode:
- This resource was created by the Ocean Tracking Network Data Centre as a summarized representation of animal presence determined by electronic tagging efforts. Darwin Core (DwC) records were extracted from the OTN database and filtered and summarized according to international agreed-upon standards.
Citations bibliographiques
- Aarestrup, K. 2018. Decadal tracking of Atlantic Bluefin Tuna In: Ocean Tracking Network Data Centre, Halifax Canada / otndc@dal.ca Retrieved: 2030-08-27 from db.load.oceantrack.org
Métadonnées additionnelles
Access Constraints: none Use Constraints: Acknowledge the use of specific records from contributing databases in the form appearing in the 'Citation' field thereof (if any); and acknowledge the use of the OBIS facility. For information purposes, email to info@obis.org the full citation of any publication made (printed or electronic) that cites OBIS or any constituent part. Recognize the limitations of data in OBIS. See https://manual.obis.org/policy.html#disclaimer for more details
| Objet | These data are for display on the OBIS portal and associated mapping programs and for download to personal computers for ad-hoc end-user analysis. |
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| Identifiants alternatifs | https://members.oceantrack.org/ipt/resource?r=otndtudecadaltrackingofat |