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dc.contributor.authorBalazy, Kaja
dc.contributor.authorTrudnowska, Emilia
dc.contributor.authorWojczulanis-Jakubas, Katarzyna
dc.contributor.authorJakubas, Dariusz
dc.contributor.authorPræbel, Kim
dc.contributor.authorChoquet, Marvin
dc.contributor.authorBrandner, Melissa Michelle
dc.contributor.authorSchultz, Mads
dc.contributor.authorBitz-Thorsen, Julie
dc.contributor.authorBoehnke, Rafał
dc.contributor.authorSzeligowska, Marlena
dc.contributor.authorDescamps, Sebastien
dc.contributor.authorStrøm, Hallvard
dc.contributor.authorBlachowiak-Samolyk, Kasia
dc.date.accessioned2023-08-24T13:02:36Z
dc.date.available2023-08-24T13:02:36Z
dc.date.issued2023-08-22
dc.description.abstractTwo Calanus species, C. glacialis and C. finmarchicus, due to different life strategies and environmental preferences act as an ecological indicators of Arctic Atlantification. Their high lipid content makes them important food source for higher trophic levels of Arctic ecosystems including the most abundant Northern Hemisphere's seabird, the little auk (Alle alle). Recent studies indicate a critical need for the use of molecular methods to reliably identify these two sympatric Calanus species. We performed genetic and morphology-based identification of 2600 Calanus individuals collected in little auks foraging grounds and diet in summer seasons 2019–2021 in regions of Svalbard with varying levels of Atlantification. Genetic identification proved that 40% of Calanus individuals were wrongly classified as C. finmarchicus according to morphology-based identification in both types of samples. The diet of little auks consisted almost entirely of C. glacialis even in more Atlantified regions. Due to the substantial bias in morphology-based identification, we expect that the scale of the northern expansion of boreal C. finmarchicus may have been largely overestimated and that higher costs for birds exposed to Atlantification could be mostly driven by a decrease in the size of C. glacialis rather than by shift from C. glacialis to C. finmarchicus.en_US
dc.identifier.citationBalazy K, Trudnowska E, Wojczulanis-Jakubas K, Jakubas D, Præbel K, Choquet M, Brandner MM, Schultz M, Bitz-Thorsen J, Boehnke R, Szeligowska M, Descamps S, Strøm H, Blachowiak-Samolyk K. Molecular tools prove little auks from Svalbard are extremely selective for Calanus glacialis even when exposed to Atlantification. Scientific Reports. 2023en_US
dc.identifier.cristinIDFRIDAID 2168982
dc.identifier.doihttps://doi.org/10.1038/s41598-023-40131-7
dc.identifier.issn2045-2322
dc.identifier.urihttps://hdl.handle.net/10037/30325
dc.language.isoengen_US
dc.publisherSpringer Natureen_US
dc.relation.journalScientific Reports
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.titleMolecular tools prove little auks from Svalbard are extremely selective for Calanus glacialis even when exposed to Atlantificationen_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)
Except where otherwise noted, this item's license is described as Attribution 4.0 International (CC BY 4.0)