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dc.contributor.authorHorton, TW
dc.contributor.authorBlock, BA
dc.contributor.authorDavies, R
dc.contributor.authorHawkes, LA
dc.contributor.authorJones, D
dc.contributor.authorJones, H
dc.contributor.authorLeeves, K
dc.contributor.authorMaoileidigh, NO
dc.contributor.authorRighton, D
dc.contributor.authorvan der Kooij, J
dc.contributor.authorWall, D
dc.contributor.authorWitt, MJ
dc.date.accessioned2021-10-05T08:19:37Z
dc.date.issued2021-04-17
dc.description.abstractAtlantic bluefin tuna (ABT, Thunnus thynnus; Linneaus, 1758) is an ecologically important apex-predator with high commercial value. They were once common off the coast of the United Kingdom (UK), before disappearing in the 1960s. In regions lacking commercial fisheries for ABT, such as the UK and Ireland, spatial data can be scarce. In these cases, sightings and bycatch databases can offset information shortfalls. Here, we document the reappearance of ABT into territorial waters of the UK from 2014 onwards, and increased occurrence off Ireland. We analyse a novel, multi-source dataset comprising occurrence data (2008–2019; 989 sightings and 114 tonnes of bycatch) compiled from a range of sources (scientific surveys, ecotours and fisheries). We show an increasing trend in effort-corrected ABT occurrence in (i) the pelagic ecosystem survey in the western English Channel and Celtic Sea (PELTIC), (ii) an ecotour operator, and (iii) the Irish albacore fishery in on-shelf and off-shelf waters. Sightings of ABT by the PELTIC correlated with modelled abundance estimates of ABT and the Atlantic multidecadal oscillation. These data demonstrate that sightings of ABT have increased off the UK and Ireland since 2014, following the same increasing trend (2010 onwards) as the eastern ABT population.en_GB
dc.description.sponsorshipUniversity of Exeteren_GB
dc.description.sponsorshipEuropean Maritime and Fisheries Funden_GB
dc.description.sponsorshipDepartment for Environment, Food and Rural Affairs (DEFRA)en_GB
dc.description.sponsorshipNOAA Bluefin Tuna Research Programen_GB
dc.description.sponsorshipTag-A-Giant Fund (TAG)en_GB
dc.identifier.citationVol. 78, pp. 1672 - 1683en_GB
dc.identifier.doi10.1093/icesjms/fsab039
dc.identifier.grantnumberENG2395en_GB
dc.identifier.grantnumberC7531en_GB
dc.identifier.urihttp://hdl.handle.net/10871/127343
dc.language.isoenen_GB
dc.publisherInternational Council for the Exploration of the Sea (ICES) / Oxford University Pressen_GB
dc.rights© International Council for the Exploration of the Sea 2021. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.en_GB
dc.subjectAMOen_GB
dc.subjectAtlantic bluefin tunaen_GB
dc.subjectbycatchen_GB
dc.subjectdistributionen_GB
dc.subjectfisheriesen_GB
dc.subjectsightingsen_GB
dc.titleEvidence of increased occurrence of Atlantic bluefin tuna in territorial waters of the United Kingdom and Irelanden_GB
dc.typeArticleen_GB
dc.date.available2021-10-05T08:19:37Z
dc.identifier.issn1054-3139
dc.descriptionThis is the final version. Available on open access from Oxford University Press via the DOI in this recorden_GB
dc.descriptionData availability: Where applicable available data sources are linked in text. Where not specifically referred to in-text, data are subject to inter-organization data-sharing agreements and/or GDPR restrictions. Consequently, data requests will be processed on a case-by-case basis by the authors.en_GB
dc.identifier.journalICES Journal of Marine Scienceen_GB
dc.rights.urihttps://creativecommons.org/licenses/by/4.0en_GB
dcterms.dateAccepted2021-01-11
exeter.funder::Marine Management Organisationen_GB
exeter.funder::Department for Environment, Food and Rural Affairs (DEFRA)en_GB
rioxxterms.versionVoRen_GB
rioxxterms.licenseref.startdate2021-04-17
rioxxterms.typeJournal Article/Reviewen_GB
refterms.dateFCD2021-10-05T08:08:04Z
refterms.versionFCDVoR
refterms.dateFOA2021-10-05T08:20:40Z
refterms.panelAen_GB


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© International Council for the Exploration of the Sea 2021.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.
Except where otherwise noted, this item's licence is described as © International Council for the Exploration of the Sea 2021. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.