Show simple item record

dc.contributor.authorJensen, Jenny Lovisa Alexandra
dc.contributor.authorStrøm, John Fredrik
dc.contributor.authorNikolopoulos, Anna
dc.contributor.authorPrimicerio, Raul
dc.contributor.authorSkardhamar, Jofrid
dc.contributor.authorAtencio, Benjamin J.
dc.contributor.authorStrand, Jo Espen Tau
dc.contributor.authorBjørn, Pål Arne
dc.contributor.authorBøhn, Thomas
dc.date.accessioned2022-08-18T07:29:06Z
dc.date.available2022-08-18T07:29:06Z
dc.date.issued2022-04-20
dc.description.abstractAtlantic salmon is an economically and culturally important species. The species encounters several natural and man-made threats during its migration between fresh water and the ocean, which in combination may explain its ongoing decline. With the aim to better understand whether post-smolt behaviour is influenced by physical oceanographic conditions, the migratory behaviour of 173 post-smolts in a high-latitude Norwegian fjord was investigated, combining acoustic telemetry with site- and time-specific environmental variables from an oceanographic model. Most post-smolts (94%) performed a unidirectional migration out the fjord. Progression rates were relatively high (0.42–2.41 km h<sup>−1</sup>; 0.84–3.78 BL s<sup>−1</sup>) and increased with distance from the river. While post-smolts had an affinity for lower salinities in the inner fjord, statistical models failed to detect any significant relationship between the small-scale (within arrays) migratory behaviour and salinity, temperature, or coastal surface currents within the fjord. In the outer part, the post-smolts predominantly exited the fjord system through the strait with the highest surface salinities and lowest temperatures, independently of the current direction. Our findings indicate that the macro-habitat selection of the Atlantic salmon post-smolts was influenced by environmental factors: the post-smolts directed their migration towards “ocean cues.” However, this was not confirmed on the micro-habitat level.en_US
dc.identifier.citationJensen J.L.A., Strøm JF, Nikolopoulos A, Primicerio R, Skardhamar JS, Atencio BJ, Strand JET, Bjørn Pa, Bøhn T. Micro- and macro-habitat selection of Atlantic salmon, (Salmo salar), post-smolts in relation to marine environmental cues. ICES Journal of Marine Science. 2022en_US
dc.identifier.cristinIDFRIDAID 2018194
dc.identifier.doi10.1093/icesjms/fsac064
dc.identifier.issn1054-3139
dc.identifier.issn1095-9289
dc.identifier.urihttps://hdl.handle.net/10037/26262
dc.language.isoengen_US
dc.publisherOxford University Pressen_US
dc.relation.journalICES Journal of Marine Science
dc.relation.projectIDHavforskningsinstituttet: 15696en_US
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2022 The Author(s)en_US
dc.titleMicro- and macro-habitat selection of Atlantic salmon, (Salmo salar), post-smolts in relation to marine environmental cuesen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


File(s) in this item

Thumbnail

This item appears in the following collection(s)

Show simple item record