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dc.contributor.authorPhotopoulou, Theoni
dc.contributor.authorHeerah, Karine
dc.contributor.authorPohle, Jennifer
dc.contributor.authorBoehme, Lars
dc.date.accessioned2020-10-22T11:30:07Z
dc.date.available2020-10-22T11:30:07Z
dc.date.issued2020-10-28
dc.identifier.citationPhotopoulou , T , Heerah , K , Pohle , J & Boehme , L 2020 , ' Sex-specific variation in the use of vertical habitat by a resident Antarctic top predator ' , Proceedings of the Royal Society B: Biological Sciences , vol. 287 , no. 1937 , 20201447 . https://doi.org/10.1098/rspb.2020.1447en
dc.identifier.issn0962-8452
dc.identifier.otherPURE: 268565866
dc.identifier.otherPURE UUID: db97c849-01be-4f1b-a5c8-6d64c0375d17
dc.identifier.otherORCID: /0000-0001-9616-9940/work/82500932
dc.identifier.otherScopus: 85094221208
dc.identifier.otherWOS: 000586460200003
dc.identifier.urihttps://hdl.handle.net/10023/20811
dc.descriptionFunding: The data collection was funded by NERC grant nos NE/G014833/1 and NE/G014086/1. T.P. was supported by a Royal Society Newton International Fellowship (NF170682). K.H. was supported by a Marie-Skłodowska Curie Research Fellowship.en
dc.description.abstractPatterns of habitat use are commonly studied in horizontal space, but this does not capture the four-dimensional nature of ocean habitats (space, depth, and time). Deep-diving marine animals encounter varying oceanographic conditions, particularly at the poles, where there is strong seasonal variation in vertical ocean structuring. This dimension of space use is hidden if we only consider horizontal movement. To identify different diving behaviours and usage patterns of vertically distributed habitat, we use hidden Markov models fitted to telemetry data from an air-breathing top predator, the Weddell seal, in the Weddell Sea, Antarctica. We present evidence of overlapping use of high-density, continental shelf water masses by both sexes, as well as important differences in their preferences for oceanographic conditions. Males spend more time in the unique high-salinity shelf water masses found at depth, while females also venture off the continental shelf and visit warmer, shallower water masses. Both sexes exhibit a diurnal pattern in diving behaviour (deep in the day, shallow at night) that persists from austral autumn into winter. The differences in habitat use in this resident, sexually monomorphic Antarctic top predator suggest a different set of needs and constraints operating at the intraspecific level, not driven by body size.
dc.format.extent10
dc.language.isoeng
dc.relation.ispartofProceedings of the Royal Society B: Biological Sciencesen
dc.rightsCopyright © 2020 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.en
dc.subjectDiving behaviouren
dc.subjectWater massen
dc.subjectContinental shelfen
dc.subjectWeddell sealen
dc.subjectSex-specific variationen
dc.subjectHidden Markov modelen
dc.subjectGC Oceanographyen
dc.subjectQH301 Biologyen
dc.subjectDASen
dc.subjectBDCen
dc.subjectR2Cen
dc.subjectSDG 14 - Life Below Wateren
dc.subject.lccGCen
dc.subject.lccQH301en
dc.titleSex-specific variation in the use of vertical habitat by a resident Antarctic top predatoren
dc.typeJournal articleen
dc.contributor.sponsorNERCen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. Centre for Research into Ecological & Environmental Modellingen
dc.contributor.institutionUniversity of St Andrews. Scottish Oceans Instituteen
dc.contributor.institutionUniversity of St Andrews. School of Biologyen
dc.contributor.institutionUniversity of St Andrews. Sea Mammal Research Uniten
dc.contributor.institutionUniversity of St Andrews. Marine Alliance for Science & Technology Scotlanden
dc.identifier.doihttps://doi.org/10.1098/rspb.2020.1447
dc.description.statusPeer revieweden
dc.identifier.grantnumberNE/G014833/1en


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