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dc.contributor.authorAndersen, Julie
dc.contributor.authorStenson, Garry
dc.contributor.authorSkern-Maurizen, Mette
dc.contributor.authorWiersma , Yolanda
dc.contributor.authorRosing-Asvid, Aqqalu
dc.contributor.authorBoehme, Lars
dc.contributor.authorHammill, Mike
dc.identifier.citationAndersen , J , Stenson , G , Skern-Maurizen , M , Wiersma , Y , Rosing-Asvid , A , Boehme , L & Hammill , M 2014 , ' Drift diving by hooded seals ( Cystophora cristata ) in the Northwest Atlantic Ocean ' , PLoS One , vol. 9 , no. 7 , e103072 .
dc.identifier.otherPURE: 136468389
dc.identifier.otherPURE UUID: 3f13c47e-e68f-42c2-a7c1-07a0a6169276
dc.identifier.otherScopus: 84904659548
dc.identifier.otherWOS: 000339551100084
dc.descriptionThis work was funded through the Atlantic Seal Research Programme, International Governance Programme (GBS and MOH), the Greenland Institute of Natural Resources (ARA), and a CFI grant to YFW. The authors also acknowledge the support of the MASTS pooling initiative (The Marine Alliance for Science and Technology for Scotland) in the completion of this study. MASTS is funded by the Scottish Funding Council (grant reference HR09011) and contributing institutions (LB).en
dc.description.abstractMany pinniped species perform a specific dive type, referred to as a ‘drift dive’, where they drift passively through the water column. This dive type has been suggested to function as a resting/sleeping or food processing dive, and can be used as an indication of feeding success by calculating the daily change in vertical drift rates over time, which reflects the relative fluctuations in buoyancy of the animal as the proportion of lipids in the body change. Northwest Atlantic hooded seals perform drift dives at regular intervals throughout their annual migration across the Northwest Atlantic Ocean. We found that the daily change in drift rate varied with geographic location and the time of year and that this differed between sexes. Positive changes in buoyancy (reflecting increased lipid stores) were evident throughout their migration range and although overlapping somewhat, they were not statistically associated with high use areas as indicated by First Passage Time (FPT). Differences in the seasonal fluctuations of buoyancy between males and females suggest that they experience a difference in patterns of energy gain and loss during winter and spring, associated with breeding. The fluctuations in buoyancy around the moulting period were similar between sexes.
dc.relation.ispartofPLoS Oneen
dc.rights© 2014 Andersen et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License (, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.en
dc.subjectQH301 Biologyen
dc.titleDrift diving by hooded seals (Cystophora cristata) in the Northwest Atlantic Oceanen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
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.contributor.institutionUniversity of St Andrews. Scottish Oceans Instituteen
dc.description.statusPeer revieweden

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