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Monitoring of mercury in the mesopelagic domain of the Pacific and Atlantic oceans using body feathers of Bulwer's petrel as a bioindicator

2021Journal article Open access
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dc.contributor.authorFurtado, Ricardo
dc.contributor.authorGranadeiro, José Pedro
dc.contributor.authorGatt, Marie C.
dc.contributor.authorRounds, Rachel
dc.contributor.authorHorikoshi, Kazuo
dc.contributor.authorPaiva, Vitor H.
dc.contributor.authorMenezes, Dilia
dc.contributor.authorPereira, Eduarda
dc.contributor.authorCatry, Paulo
dc.date.accessioned2021-03-19T15:52:22Z
dc.date.available2021-03-19T15:52:22Z
dc.date.issued2021
dc.description.abstractGlobal mercury pollution has markedly and consistently grown over the past 70 years (although with regional variations in trends) and is a source of major concern. Mercury contamination is particularly prevalent in biota of the mesopelagic layers of the open ocean, but these realms are little studied, and we lack a large scale picture of contamination in living organisms of this region. The Bulwer's petrel Bulweria bulwerii, a species of migratory seabird, is a highly specialised predator of mesopelagic fish and squid, and therefore can be used as a bioindicator for the mesopelagic domain. Mercury accumulated by the birds through diet is excreted into feathers during the moulting process in adults and feather growth in chicks, reflecting contamination in the non-breeding and breeding periods, respectively, and hence the influence of different, largely non-overlapping breeding and non-breeding ranges. We studied mercury in feathers and the trophic position in two colonies from the Atlantic Ocean (Portugal and Cape Verde) and two colonies from the Pacific Ocean (Japan and Hawaii). We found significantly lower levels of mercury in adult and chick samples from the Pacific Ocean compared with samples from the Atlantic Ocean. However, we did not detect differences in trophic position of chicks among colonies and oceans, suggesting that differences in mercury measured in feathers reflect levels of environmental contamination, rather than differences in the structure of the trophic chain in different oceans. We conclude that despite a reduction in mercury levels in the Atlantic in recent decades, mesopelagic organisms in this ocean remain more heavily contaminated than in the Pacific at tropical and subtropical latitudes. We suggest that Bulwer's petrel is a highly suitable species to monitor the global contamination of mercury in the mesopelagic domain.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationScience of The Total Environment, 775, 1-7 Doi: 10.1016/j.scitotenv.2021.145796pt_PT
dc.identifier.doi10.1016/j.scitotenv.2021.145796pt_PT
dc.identifier.issn0048-9697
dc.identifier.urihttp://hdl.handle.net/10400.12/8042
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/4.0/pt_PT
dc.subjectMercurypt_PT
dc.subjectMesopelagic specialistspt_PT
dc.subjectForagingpt_PT
dc.subjectBiomonitoringpt_PT
dc.subjectCompound-specific stable isotope analysispt_PT
dc.titleMonitoring of mercury in the mesopelagic domain of the Pacific and Atlantic oceans using body feathers of Bulwer's petrel as a bioindicatorpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceNetherlandspt_PT
oaire.citation.endPage7pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleScience of The Total Environmentpt_PT
oaire.citation.volume775pt_PT
person.familyNameFurtado
person.familyNamePedro Granadeiro
person.familyNameGatt
person.familyNamePaiva
person.familyNameMenezes
person.familyNamede Barros Pereira
person.familyNameCatry
person.givenNameRicardo
person.givenNameJosé
person.givenNameMarie Claire
person.givenNameVitor
person.givenNameDilia
person.givenNameEduarda Manuel
person.givenNamePaulo
person.identifierSlxtKi4AAAAJ
person.identifier204400
person.identifier.ciencia-id3114-23EB-2E89
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person.identifier.orcid0000-0002-9123-1298
person.identifier.orcid0000-0002-7207-3474
person.identifier.orcid0000-0001-9747-2060
person.identifier.orcid0000-0001-6368-9579
person.identifier.orcid0000-0002-1824-7226
person.identifier.orcid0000-0002-6139-4942
person.identifier.orcid0000-0003-3000-0522
person.identifier.ridV-2509-2018
person.identifier.ridI-5408-2013
person.identifier.scopus-author-id6603758245
person.identifier.scopus-author-id12767771900
person.identifier.scopus-author-id7003725276
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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