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Habitat preferences, foraging behaviour and bycatch risk among breeding sooty shearwaters Ardenna grisea in the Southwest Atlantic

2020Journal article Open access
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dc.contributor.authorBonnet-Lebrun, Anne-Sophie
dc.contributor.authorCatry, Paulo
dc.contributor.authorClark, Tyler J.
dc.contributor.authorCampioni, Letizia
dc.contributor.authorKuepfer, Amanda
dc.contributor.authorTierny, Megan
dc.contributor.authorKilbride, Elizabeth
dc.contributor.authorWakefield, Ewan D.
dc.date.accessioned2020-11-09T17:26:55Z
dc.date.available2020-11-09T17:26:55Z
dc.date.issued2020
dc.description.abstractPelagic seabirds are important components of many marine ecosystems. The most abundant species are medium/small sized petrels (<1100 g), yet the sub-mesoscale (<10 km) distribution, habitat use and foraging behaviour of this group are not well understood. Sooty shearwaters Ardenna grisea are among the world’s most numerous pelagic seabirds. The majority inhabit the Pacific, where they have declined, partly due to bycatch and other anthropogenic impacts, but they are increasing in the Atlantic. To evaluate the sub-mesoscale habitat preferences (i.e. the disproportionality between habitat use and availability), diving behaviour and bycatch risk of Atlantic breeders, we tracked sooty shearwaters from the Falkland Islands during late incubation and early chick-rearing with GPS loggers (n = 20), geolocators (n = 10) and time-depth recorders (n = 10). These birds foraged exclusively in neritic and shelf-break waters, principally over the Burdwood Bank, ~350 km from their colony. Like New Zealand breeders, they dived mostly during daylight, especially at dawn and dusk, consistent with the exploitation of vertically migrating prey. However, Falkland birds made shorter foraging trips, shallower dives, and did not forage in oceanic waters. Their overlap with fisheries was low, and they foraged at shallower depths than those targeted by trawlers, the most frequent fishing vessels encountered, indicating that bycatch risk was low during late incubation/early chick-rearing. Although our results should be treated with caution, they indicate that Atlantic and Pacific sooty shearwaters may experience markedly differing pressures at sea. Comparative study between these populations, e.g. combining biologging and demography, is therefore warranted.pt_PT
dc.description.sponsorshipFCT - Fundação para a Ciência e Tecnologiapt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationMarine Ecology - Progress Series, 651, 163-181 Doi: 10.3354/meps13439pt_PT
dc.identifier.doi10.3354/meps13439pt_PT
dc.identifier.issn01718630
dc.identifier.urihttp://hdl.handle.net/10400.12/7825
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherInter-Researchpt_PT
dc.relationFCT-SFRH/BPD/89904/2012pt_PT
dc.relationMARE - Marine and Environmental Sciences Centre
dc.rights.urihttp://creativecommons.org/licenses/by-nd/4.0/pt_PT
dc.subjectBenthic−pelagic couplingpt_PT
dc.subjectDual foragingpt_PT
dc.subjectMarine protected areaspt_PT
dc.subjectDiving behaviourpt_PT
dc.titleHabitat preferences, foraging behaviour and bycatch risk among breeding sooty shearwaters Ardenna grisea in the Southwest Atlanticpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleMARE - Marine and Environmental Sciences Centre
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FMAR%2F04292%2F2019/PT
oaire.citation.conferencePlaceGermanypt_PT
oaire.citation.endPage181pt_PT
oaire.citation.startPage163pt_PT
oaire.citation.titleMarine Ecology Progress Seriespt_PT
oaire.citation.volume651pt_PT
oaire.fundingStream6817 - DCRRNI ID
person.familyNameBonnet-Lebrun
person.familyNameCatry
person.familyNameCampioni
person.familyNameKuepfer
person.givenNameAnne-Sophie
person.givenNamePaulo
person.givenNameLetizia
person.givenNameAmanda
person.identifier.ciencia-id2E1B-3461-22F9
person.identifier.ciencia-idEF1A-6A4A-013A
person.identifier.ciencia-id1016-2368-D535
person.identifier.orcid0000-0002-7587-615X
person.identifier.orcid0000-0003-3000-0522
person.identifier.orcid0000-0002-6319-6931
person.identifier.orcid0000-0002-3559-8802
person.identifier.ridI-5408-2013
person.identifier.scopus-author-id7003725276
person.identifier.scopus-author-id27267546800
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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