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dc.contributor.authorBeltran, Roxanne S.
dc.contributor.authorKendall-Bar, Jessica M.
dc.contributor.authorPirotta, Enrico
dc.contributor.authorAdachi, Taiki
dc.contributor.authorNaito, Yasuhiko
dc.contributor.authorTakahashi, Akinori
dc.contributor.authorCremers, Jolien
dc.contributor.authorRobinson, Patrick W.
dc.contributor.authorCrocker, Daniel E.
dc.contributor.authorCosta, Daniel P.
dc.identifier.citationBeltran , R S , Kendall-Bar , J M , Pirotta , E , Adachi , T , Naito , Y , Takahashi , A , Cremers , J , Robinson , P W , Crocker , D E & Costa , D P 2021 , ' Lightscapes of fear : how mesopredators balance starvation and predation in the open ocean ' , Science Advances , vol. 7 , no. 12 , eabd9818 .
dc.identifier.otherPURE: 273499420
dc.identifier.otherPURE UUID: a1090dc5-2692-44d4-a791-e77958137c32
dc.identifier.otherJisc: a3dd62fcd05c4401a4198e7bacdbcfe8
dc.identifier.otherScopus: 85102658523
dc.identifier.otherWOS: 000633443000012
dc.descriptionFunding: Financial support for this research was provided by an NSF Postdoctoral Research Fellowship in Biology and UC Santa Cruz Chancellor’s Postdoctoral Fellowship (R.S.B.), as well as the Office of Naval Research, the E&P Sound and Marine Life Joint Industry Project of the International Association of Oil and Gas Producers (D.P.C.), and the Novo Nordisk Foundation (“Harnessing The Power of Big Data to Address the Societal Challenge of Aging”, NNF17OC0027812) (J.C.).en
dc.description.abstractLike landscapes of fear, animals are hypothesized to strategically use lightscapes based on intrinsic motivations. However, longitudinal evidence of state-dependent risk aversion has been difficult to obtain in wild animals. Using high-resolution biologgers, we continuously measured body condition, time partitioning, three-dimensional movement, and risk exposure of 71 elephant seals throughout their 7-month foraging migrations (N = 16,000 seal days). As body condition improved from 21 to 32% fat and daylength declined from 16 to 10 hours, seals rested progressively earlier with respect to sunrise, sacrificing valuable nocturnal foraging hours to rest in the safety of darkness. Seals in superior body condition prioritized safety over energy conservation by resting >100 meters deeper where it was 300× darker. Together, these results provide empirical evidence that marine mammals actively use the three-dimensional lightscape to optimize risk-reward trade-offs based on ecological and physiological factors.
dc.relation.ispartofScience Advancesen
dc.rightsCopyright © 2021 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).en
dc.subjectGC Oceanographyen
dc.subjectQH301 Biologyen
dc.subjectSDG 7 - Affordable and Clean Energyen
dc.subjectSDG 14 - Life Below Wateren
dc.titleLightscapes of fear : how mesopredators balance starvation and predation in the open oceanen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. School of Biologyen
dc.description.statusPeer revieweden

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