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dc.contributor.authorGuidos, Steven
dc.contributor.authorvan Dijk, Jiska Joanneke
dc.contributor.authorSystad, Geir Helge Rødli
dc.contributor.authorLanda, Arild
dc.coverage.spatialWestern Norwayen_US
dc.identifier.citationRemote Sensing in Ecology and Conservation. 2023, .en_US
dc.description.abstractAlthough nesting in colonies can offer substantial reproductive benefits formany seabird species, increased visibility to predators remains a significant dis-advantage for most colony-breeders. To counteract this, some seabird specieshave evolved aggressive nest defense strategies to protect vulnerable eggs andchicks. Here, we used an experimental approach to test whether colony inhabi-tance by breeding gullsLarusspp. in western Norway impacts visitation rates ofa native, mammalian predator, the Eurasian otterLutra lutraduring the breed-ing season. Camera traps were placed inside of and on the periphery of seabirdcolonies prior to the breeding season and left to run for one continuous year.Sighting frequency of otters on these cameras was compared to a control regionfree of gull nesting. We found that otter activity was significantly reduced inthe colonies when gulls were incubating and rearing chicks, compared to timeperiods when gulls were building nests and absent from the colonies. Rhythmicactivity patterns did not seem to be significantly impacted by the presence ofgulls. This study provides clear evidence that certain colony-nesting species canhave a direct, negative impact on visitation rates of a native carnivore. Seasonalcarnivore activity patterns are likely to be highly dependent on differing nestingstrategies and level of nest defense by seabirds. Camera trapping, gulls, nesting colony,otters, predator activity, seabirdsen_US
dc.rightsNavngivelse-Ikkekommersiell 4.0 Internasjonal*
dc.subjectCamera trappingen_US
dc.subjectnesting colonyen_US
dc.subjectpredator activityen_US
dc.titleColony-nesting gulls restrict activity levels of a native top carnivore during the breeding seasonen_US
dc.title.alternativeColony-nesting gulls restrict activity levels of a native top carnivore during the breeding seasonen_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.journalRemote Sensing in Ecology and Conservationen_US
dc.relation.projectAndre: County Municipalities of Agder 22SC839en_US
dc.relation.projectNorges forskningsråd: 335887en_US
dc.relation.projectAndre: County Governorsof Vestland (Ref. number: 2020/1046)en_US
dc.relation.projectAndre: County Municipalities of Rogaland 2022/8193en_US
dc.relation.projectAndre: County Municipalities of Vestland 22SC8392en_US
dc.relation.projectAndre: County Governors of Agder FOR-2018-12-19-2172en_US

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Navngivelse-Ikkekommersiell 4.0 Internasjonal
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