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Contrasting trends of Falkland skua populations at two key nesting sites

2026-06-26Artigo científico Acesso aberto
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datacite.subject.fosCiências Naturais::Ciências Biológicas
datacite.subject.sdg14:Proteger a Vida Marinha
dc.contributor.authorCorreia, Edna
dc.contributor.authorGranadeiro, José Pedro
dc.contributor.authorKuepfer, Amanda
dc.contributor.authorStanworth, Andy
dc.contributor.authorCatry, Paulo
dc.date.accessioned2026-09-17T17:40:47Z
dc.date.available2026-09-17T17:40:47Z
dc.date.issued2026-06-26
dc.description.abstractStercorarius antarcticus antarcticus is a long-lived seabird breeding primarily in the Falkland Islands. Despite its current Least Concern status by the IUCN, its population is declining, and trends remain poorly understood. We surveyed breeding populations across 18 islands and compared the changes in population size on New Island and Steeple Jason Island, the two largest known nesting sites. Between 2009 and 2023, the New Island population declined by 26% (2.1% annually), from 333 to 246 apparently occupied territories (AOTs). Over a similar period, the Steeple Jason Island population increased by 50% (3.1% annually), from 222 to 332 AOTs - reversing the population sizes at the two sites. A higher proportion of single-egg clutches and empty nests on New Island suggests lower breeding success. In contrast, the growth on Steeple Jason Island may be associated with a high number of food sources, including the establishment of a breeding rookery of South American fur seals (Arctocephalus australis). Resightings of skuas ringed as chicks indicate natal philopatry but also some dispersal across the archipelago. These results emphasise the need for a broad, multi-colony approach to better understand and manage Falkland skua populations.por
dc.identifier.citationCorreia, E., Granadeiro, J. P., Kuepfer, A., Stanworth, A., & Catry, P. (2026b). Contrasting trends of Falkland skua populations at two key nesting sites. Polar Biology, 49(3). https://doi.org/10.1007/s00300-026-03513-x
dc.identifier.doi10.1007/s00300-026-03513-x
dc.identifier.issn0722-4060
dc.identifier.issn1432-2056
dc.identifier.urihttp://hdl.handle.net/10400.12/14075
dc.language.isoeng
dc.peerreviewedyes
dc.publisherSpringer Science and Business Media LLC
dc.relation.hasversionhttps://link.springer.com/article/10.1007/s00300-026-03513-x
dc.relation.ispartofPolar Biology
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectThe Falkland Islands
dc.subjectMalvinas
dc.subjectBrown skua
dc.subjectPopulation trends
dc.subjectPropulation trends
dc.subjectbreeding
dc.subjectConservation
dc.titleContrasting trends of Falkland skua populations at two key nesting sites
dc.typejournal article
dspace.entity.typePublication
oaire.citation.issue3
oaire.citation.titlePolar Biology
oaire.citation.volume49
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameCatry
person.givenNamePaulo
person.identifier.ciencia-idEF1A-6A4A-013A
person.identifier.orcid0000-0003-3000-0522
person.identifier.ridI-5408-2013
person.identifier.scopus-author-id7003725276
relation.isAuthorOfPublication2cfe93c3-17bb-4d1a-800f-7a34fbd47927
relation.isAuthorOfPublication.latestForDiscovery2cfe93c3-17bb-4d1a-800f-7a34fbd47927

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