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Gulls as indicators of environmental changes in the North Atlantic: a long-term study on Berlenga Island, Western Portugal

2023-11-18Journal article Open access
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dc.contributor.authorCeia, Filipe R.
dc.contributor.authorSilva, Nathalie C.
dc.contributor.authorPaiva, Vitor H.
dc.contributor.authorMorais, Lurdes
dc.contributor.authorSerrao, Ester
dc.contributor.authorRamos, Jaime A.
dc.date.accessioned2023-12-13T11:25:03Z
dc.date.available2023-12-13T11:25:03Z
dc.date.issued2023-11-18
dc.date.updated2023-11-24T14:23:20Z
dc.description.abstractIn recent decades, the breeding populations of the yellow-legged gull <i>Larus michahellis</i> (YLG) have increased significantly, primarily due to the increase in open refuse dumps and discards from fisheries. Portugal’s largest YLG breeding colony is located on Berlenga Island, where population numbers have been monitored since 1974. The population grew exponentially until 1994, prompting the implementation of population control measures, including culling adult birds and eggs. A long-term data base including number of breeding birds (since 1974), breeding parameters (since 2002), and trophic niches (using stable isotopes since 2011) of YLG breeding on Berlenga was related with oceanographic parameters, fish landings and quantity of urban waste. Trophic ecology showed strong relationships with oceanographic parameters (wNAO, Chl-a, and SST) and fisheries landings (the 10 most frequently consumed species by the YLG, traded at fish auctions in the main fishing harbour nearby). The results indicated significant relationships between reproductive performance and fisheries landings, particularly with demersal species that gulls primarily access through fisheries discards. However, population control measures played a pivotal role in stabilising and even reducing the population, despite sporadic events of poor oceanographic productivity in the past decade having a consistent impact on the reduction in breeding individuals.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifierdoi: 10.3390/d15111148
dc.identifier.citationDiversity 15 (11): 1148 (2023)pt_PT
dc.identifier.doi10.3390/d15111148pt_PT
dc.identifier.issn1424-2818
dc.identifier.urihttp://hdl.handle.net/10400.1/20220
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.relationMarine and Environmental Sciences Centre
dc.relationMarine and Environmental Sciences Centre
dc.relationAquatic Research Infrastructure Network
dc.relationNot Available
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectYellow-legged gullpt_PT
dc.subjectIsotopic nichespt_PT
dc.subjectFeeding ecologypt_PT
dc.subjectLarus michahellispt_PT
dc.subjectStable isotopespt_PT
dc.subjectBreeding performancept_PT
dc.subjectCensuspt_PT
dc.subjectOceanographic conditionspt_PT
dc.subjectNAOpt_PT
dc.titleGulls as indicators of environmental changes in the North Atlantic: a long-term study on Berlenga Island, Western Portugalpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleMarine and Environmental Sciences Centre
oaire.awardTitleMarine and Environmental Sciences Centre
oaire.awardTitleAquatic Research Infrastructure Network
oaire.awardTitleNot Available
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04292%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F04292%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0069%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/DL 57%2F2016/DL 57%2F2016%2FCP1370%2FCT0090/PT
oaire.citation.issue11pt_PT
oaire.citation.startPage1148pt_PT
oaire.citation.titleDiversitypt_PT
oaire.citation.volume15pt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStreamDL 57/2016
person.familyNameSerrao
person.givenNameEster A.
person.identifierC-6686-2012
person.identifier.ciencia-id5B13-B26E-B1EC
person.identifier.orcid0000-0003-1316-658X
person.identifier.scopus-author-id7004093604
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
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
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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relation.isAuthorOfPublication.latestForDiscovery45ccfe90-155c-4d6f-9e86-8f0fd064005f
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