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dc.contributor.authorLubitz, Nicolas
dc.contributor.authorDaly, Ryan
dc.contributor.authorFilmalter, John D.
dc.contributor.authorSheaves, Marcus
dc.contributor.authorCowley, Paul D.
dc.contributor.authorNæsje, Tor
dc.contributor.authorBarnett, Adam
dc.coverage.spatialSouthern Africaen_US
dc.description.abstractIntra-specific variability in movement behaviour occurs in all major taxonomic groups. Despite its common occurrence and ecological consequences, individual variability is often overlooked. As a result, there is a persistent gap in knowledge about drivers of intra-specific variability in movement and its role in fulfilling life history requirements. We apply a context-focused approach to bull sharks (Carcharhinus leucas), a highly mobile marine predator, incorporating intra-specific variability to understand how variable movement patterns arise and how they might be altered under future change scenarios. Spatial analysis of sharks, acoustically tagged both at their distributional limit and the centre of distribution in southern Africa, was combined with spatial analysis of acoustically tagged teleost prey and remote-sensing of environmental variables. The objective was to test the hypothesis that varying resource availability and magnitude of seasonal environmental change in different locations interact to produce variable yet predictable movement behaviours across a species’ distribution. Sharks from both locations showed high seasonal overlap with predictable prey aggregations. Patterns were variable in the centre of distribution, where residency, small- and large-scale movements were all recorded. In contrast, all animals from the distributional limit performed ‘leap-frog migrations’, making long-distance migrations bypassing conspecifics in the centre of distribution. By combining multiple variables related to life history requirements for animals in different environments we identified combinations of key drivers that explain the occurrence of differing movement behaviours across different contexts and delineated the effects of environmental factors and prey dynamics on predator movement. Comparisons with other taxa show striking similarities in patterns of intra-specific variability across terrestrial and marine species, suggesting common drivers. Animal movement, Context, Intra-specific variability, Resource availability, Bull sharks, Birds, Marine predators, Environmental changeen_US
dc.description.abstractContext drives movement patterns in a mobile marine predatoren_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.subjectAnimal movementen_US
dc.subjectIntra-specific variabilityen_US
dc.subjectResource availabilityen_US
dc.subjectBull sharksen_US
dc.subjectMarine predatorsen_US
dc.subjectEnvironmental changeen_US
dc.titleContext drives movement patterns in a mobile marine predatoren_US
dc.title.alternativeContext drives movement patterns in a mobile marine predatoren_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.rights.holder© 2023 The Authorsen_US
dc.subject.nsiVDP::Zoologiske og botaniske fag: 480en_US
dc.subject.nsiVDP::Zoology and botany: 480en_US
dc.source.journalMovement Ecologyen_US
dc.relation.projectNorges forskningsråd: 287015en_US

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