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dc.contributor.authorVogel, Emma
dc.contributor.authorSkalmerud, Emma
dc.contributor.authorBiuw, Martin
dc.contributor.authorBlanchet, Marie-Anne
dc.contributor.authorKleivane, Lars
dc.contributor.authorSkaret, Georg
dc.contributor.authorØien, Nils
dc.contributor.authorRikardsen, Audun
dc.date.accessioned2023-09-11T09:18:24Z
dc.date.available2023-09-11T09:18:24Z
dc.date.issued2023-08-24
dc.description.abstractUnderstanding how individual animals modulate their behaviour and movement patterns in response to environmental variability plays a central role in behavioural ecology. Marine mammal tracking studies typically use physical environmental characteristics that vary, and/or proxies of prey distribution, to explain predator movements. Studies linking predator movements and the actual distributions of prey are rare. Here we analysed satellite tag data from ten humpback whales in the Barents Sea (north-east Atlantic) to examine how their spatial movement and dive patterns are influenced by the geographic and vertical distribution of capelin, which is a key prey species for humpback whales. We used capelin density estimates based on direct observations from a trawlacoustic survey and sun elevation to explore the drivers of changes in movement patterns. We found that the humpback whales’ exhibited characteristic area restricted search movement where capelin density was the highest. While horizontal movements showed both positive and negative individual relationships with sun elevation, humpback whale dive depth was positively correlated with diurnal variations in the vertical distribution of capelin. This suggests that in addition to whales foraging in regions of high capelin density, they also target the densest shoals of capelin at a range of depths, throughout the day and night. Overall, our findings suggest that regions of high capelin density are important foraging grounds for humpback whales, highlighting the central role capelin plays in the Barents Sea marine ecosystem.en_US
dc.identifier.citationVogel EF, Skalmerud S, Biuw M, Blanchet M-A, Kleivane L, Skaret G, Øien N and Rikardsen A (2023) Foraging movements of humpback whales relate to the lateral and vertical distribution of capelin in the Barents Sea. Front. Mar. Sci.en_US
dc.identifier.cristinIDFRIDAID 2172931
dc.identifier.doi10.3389/fmars.2023.1254761
dc.identifier.issn2296-7745
dc.identifier.urihttps://hdl.handle.net/10037/30897
dc.language.isoengen_US
dc.publisherFrontiers Mediaen_US
dc.relation.ispartofVogel, E. (2023). The influence of prey distribution on marine top predator movements. (Doctoral thesis). <a href=https://hdl.handle.net/10037/31867>https://hdl.handle.net/10037/31867</a>.
dc.relation.journalFrontiers in Marine Science
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2023 The Author(s)en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0en_US
dc.rightsAttribution 4.0 International (CC BY 4.0)en_US
dc.titleForaging movements of humpback whales relate to the lateral and vertical distribution of capelin in the Barents Seaen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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Attribution 4.0 International (CC BY 4.0)
Med mindre det står noe annet, er denne innførselens lisens beskrevet som Attribution 4.0 International (CC BY 4.0)