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Generalist seabirds as biomonitors of ocean mercury: The importance of accurate trophic position assignment

2020Journal article Restricted access
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dc.contributor.authorGatt, Marie Claire
dc.contributor.authorReis, Bianca
dc.contributor.authorGranadeiro, José Pedro
dc.contributor.authorPereira, Eduarda
dc.contributor.authorCatry, Paulo
dc.date.accessioned2020-06-29T11:24:33Z
dc.date.available2020-06-29T11:24:33Z
dc.date.issued2020
dc.description.abstractMonitoring mercury concentration in the marine environment is pivotal due to the risks that mercury intake poses to the ecosystem and human health. It is therefore of interest to make reliable, comparative measurements over large geographic areas. Here, the utility of wide-ranging generalist seabirds as mercury biomonitors at an ocean basin scale was assessed, using the Cory's Shearwater as a model species. The mercury concentration in flight feathers moulted at distant non-breeding areas of geolocator-tracked birds was quantified, reflecting contamination in various geographic areas. Compound-specific isotope analysis of amino acids was used to obtain comparable trophic positionestimates controlled for baseline isoscape. Birds that remained resident in the Canary Current integrated less mercury into their feathers than those that migrated to either the Benguela or Agulhas currents. Residents also occupied a significantly lower trophic position during the non-breeding season than migrants, largely explaining the difference in mercury exposure. Both mercury concentration and trophic position were similar in individuals spending the non-breeding period in the Benguela and Agulhas currents. This paper highlights the importance of accurate trophic position calculation in order to understand mercury exposure in wide-ranging predators and for meaningful spatial comparisons.pt_PT
dc.description.sponsorshipFundação para a Ciência e Tecnologia - FCTpt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationScience of the Total Environment Doi: 10.1016/j.scitotenv.2020.140159pt_PT
dc.identifier.doi10.1016/j.scitotenv.2020.140159pt_PT
dc.identifier.issn00489697
dc.identifier.urihttp://hdl.handle.net/10400.12/7675
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationPTDC/BIAANM/ 3743/2014pt_PT
dc.relationMarine and Environmental Sciences Centre
dc.relationCentre for Environmental and Marine Studies
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/pt_PT
dc.subjectBiomagnificationpt_PT
dc.subjectBiomonitoringpt_PT
dc.subjectCSIA-AApt_PT
dc.subjectMercurypt_PT
dc.subjectSeabirdpt_PT
dc.subjectTrophic positionpt_PT
dc.titleGeneralist seabirds as biomonitors of ocean mercury: The importance of accurate trophic position assignmentpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleMarine and Environmental Sciences Centre
oaire.awardTitleCentre for Environmental and Marine Studies
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04292%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F50017%2F2020/PT
oaire.citation.conferencePlaceNetherlandspt_PT
oaire.citation.endPage6pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleScience of The Total Environmentpt_PT
oaire.citation.volume740pt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
person.familyNameGatt
person.familyNameReis
person.familyNamePedro Granadeiro
person.familyNamede Barros Pereira
person.familyNameCatry
person.givenNameMarie Claire
person.givenNameBianca
person.givenNameJosé
person.givenNameEduarda Manuel
person.givenNamePaulo
person.identifierSlxtKi4AAAAJ
person.identifier.ciencia-idC310-1EB3-851E
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person.identifier.ciencia-id8D13-E4D6-31FF
person.identifier.ciencia-idEF1A-6A4A-013A
person.identifier.orcid0000-0001-9747-2060
person.identifier.orcid0000-0002-5268-7102
person.identifier.orcid0000-0002-7207-3474
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-id7003725276
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
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