Post-breeding at-sea movements of three central-place foragers in relation to submesoscale fronts in the Southern Ocean around Bouvetøya

dc.contributor.authorLowther, Andrew D.
dc.contributor.authorLydersen, Christian
dc.contributor.authorBiuw, Martin
dc.contributor.authorDe Bruyn, P.J. Nico
dc.contributor.authorHofmeyr, G.J. Greg (Gordon John Gregory)
dc.contributor.authorKovacs, Kit M.
dc.date.accessioned2015-01-29T10:21:15Z
dc.date.available2015-01-29T10:21:15Z
dc.date.issued2014
dc.description.abstractAt-sea behaviour of central-place foraging fur seals and penguins in the Southern Ocean is understudied during the latter stages of parental care and the subsequent pre-moulting period. This biologically important period is costly to investigate due to the risk (or certainty) of losing tracking instruments when the animals moult. Early in this period, parents must meet the increasing demands of larger, more mobile offspring that are still nutritionally dependent and then the parents must recover lost body condition prior to the onset of their annual moult. This study reports late-season, at-sea movement patterns of macaroni penguins, chinstrap penguins and adult female Antarctic fur seals from the subantarctic island Bouvetøya, in relation to remotely-sensed oceanographic features. Foraging trips differing significantly in direction and distance travelled compared to those performed earlier in the breeding season, coincide with the time when offspring would be expected to become independent. On these trips, macaroni penguins moved towards the Polar Front while chinstrap penguins and Antarctic fur seals moved southward. Individuals from all three species appeared to target submesoscale ocean features once they were presumed to have been released from the constraints of feeding their young and were able to travel greater distances from the colony.en_ZA
dc.description.librariantm2015en_ZA
dc.description.sponsorshipNorwegian Antarctic Research Expedition (NARE)en_ZA
dc.description.urihttp://journals.cambridge.org/action/displayJournal?jid=ANSen_ZA
dc.identifier.citationLowther, AD, Lydersen, C, Biuw, M, De Bruyn, PJN, Hofmeyr, GJG, Kovacs, KM 2014, 'Post-breeding at-sea movements of three central-place foragers in relation to submesoscale fronts in the Southern Ocean around Bouvetøya', Antarctic Science, vol. 26, no. 5, pp. 533–544.en_ZA
dc.identifier.issn0954-1020 (print)
dc.identifier.issn1365-2079 (online)
dc.identifier.other10.1017/S0954102014000170
dc.identifier.urihttp://hdl.handle.net/2263/43476
dc.language.isoenen_ZA
dc.publisherCambridge University Pressen_ZA
dc.rights© Antarctic Science Ltd 2014en_ZA
dc.subjectForaging ecologyen_ZA
dc.subjectHidden Markov modelsen_ZA
dc.subjectOceanographyen_ZA
dc.subjectPenguinsen_ZA
dc.subjectTelemetryen_ZA
dc.subjectMacaroni penguins (Eudyptes chrysolophus)en_ZA
dc.subjectChinstrap penguins (Pygoscelis antarctica)en_ZA
dc.subjectFur sealsen_ZA
dc.subjectAntarctic fur seal (Arctocephalus gazella)en_ZA
dc.titlePost-breeding at-sea movements of three central-place foragers in relation to submesoscale fronts in the Southern Ocean around Bouvetøyaen_ZA
dc.typeArticleen_ZA

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