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dc.contributor.authorSchmidt, Katrin
dc.contributor.authorGraeve, Martin
dc.contributor.authorHoppe, Clara J. M.
dc.contributor.authorTorres-Valdes, Sinhué
dc.contributor.authorWelteke, Nahid
dc.contributor.authorWhitmore, Laura M.
dc.contributor.authorAnhaus, Philipp
dc.contributor.authorAtkinson, Angus
dc.contributor.authorBelt, Simon T.
dc.contributor.authorBrenneis, Tina
dc.contributor.authorCampbell, Robert G.
dc.contributor.authorCastellani, Giulia
dc.contributor.authorCopeman, Louise A.
dc.contributor.authorFlores, Hauke
dc.contributor.authorFong, Allison A.
dc.contributor.authorHildebrandt, Nicole
dc.contributor.authorKohlbach, Doreen
dc.contributor.authorNielsen, Jens M.
dc.contributor.authorParrish, Christopher C.
dc.contributor.authorRad-Menéndez, Cecilia
dc.contributor.authorRokitta, Sebastian D.
dc.contributor.authorTippenhauer, Sandra
dc.contributor.authorZhuang, Yanpei
dc.date.accessioned2024-09-25T09:18:20Z
dc.date.available2024-09-25T09:18:20Z
dc.date.issued2023-12-19
dc.description.abstractMicroalgae are the main source of the omega-3 fatty acids eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), essential for the healthy development of most marine and terrestrial fauna including humans. Inverse correlations of algal EPA and DHA proportions (% of total fatty acids) with temperature have led to suggestions of a warming-induced decline in the global production of these biomolecules and an enhanced importance of high latitude organisms for their provision. The cold Arctic Ocean is a potential hotspot of EPA and DHA production, but consequences of global warming are unknown. Here, we combine a full-seasonal EPA and DHA dataset from the Central Arctic Ocean (CAO), with results from 13 previous field studies and 32 cultured algal strains to examine five potential climate change effects; ice algae loss, community shifts, increase in light, nutrients, and temperature. The algal EPA and DHA proportions were lower in the ice-covered CAO than in warmer peripheral shelf seas, which indicates that the paradigm of an inverse correlation of EPA and DHA proportions with temperature may not hold in the Arctic. We found no systematic differences in the summed EPA and DHA proportions of sea ice versus pelagic algae, and in diatoms versus non-diatoms. Overall, the algal EPA and DHA proportions varied up to four-fold seasonally and 10-fold regionally, pointing to strong light and nutrient limitations in the CAO. Where these limitations ease in a warming Arctic, EPA and DHA proportions are likely to increase alongside increasing primary production, with nutritional benefits for a non-ice-associated food web.en_US
dc.identifier.citationSchmidt, Graeve, Hoppe, Torres-Valdes, Welteke, Whitmore, Anhaus, Atkinson, Belt, Brenneis, Campbell, Castellani, Copeman, Flores, Fong, Hildebrandt, Kohlbach, Nielsen, Parrish, Rad-Menéndez, Rokitta, Tippenhauer, Zhuang. Essential omega-3 fatty acids are depleted in sea ice and pelagic algae of the Central Arctic Ocean. Global Change Biology. 2024;30(1)en_US
dc.identifier.cristinIDFRIDAID 2240364
dc.identifier.doi10.1111/gcb.17090
dc.identifier.issn1354-1013
dc.identifier.issn1365-2486
dc.identifier.urihttps://hdl.handle.net/10037/34863
dc.language.isoengen_US
dc.publisherWileyen_US
dc.relation.journalGlobal Change Biology
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.titleEssential omega-3 fatty acids are depleted in sea ice and pelagic algae of the Central Arctic Oceanen_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)