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dc.contributor.authorBodur, Yasemin Vicdan
dc.contributor.authorRenaud, Paul Eric
dc.contributor.authorGoraguer, Lucie Hélène Marie
dc.contributor.authorAmargant I Arumi, Marti
dc.contributor.authorAssmy, Philipp Kurt Wolf
dc.contributor.authorDabrowska, Anna Maria
dc.contributor.authorMarquardt, Miriam
dc.contributor.authorRenner, Angelika
dc.contributor.authorTatarek, Agnieska
dc.contributor.authorReigstad, Marit
dc.date.accessioned2023-10-13T12:37:50Z
dc.date.available2023-10-13T12:37:50Z
dc.date.issued2023-09-27
dc.description.abstractThe northern Barents Sea is a productive Arctic inflow shelf with a seasonal ice cover and as such, a location with an efficient downward export of particulate organic matter through the biological carbon pump. The region is under strong influence of Atlantification and sea-ice decline, resulting in a longer open water and summer period. In order to understand how these processes influence the biological carbon pump, it is important to identify the seasonal and spatial dynamics of downward vertical flux of particulate organic matter. In 2019 and 2021, shortterm sediment traps were deployed between 30 and 200 m depth along a latitudinal transect in the northwestern Barents Sea during March, May, August and December. Vertical flux of particulate organic carbon, δ<sup>13</sup>C and δ<sup>15</sup>N values, Chl-a, protists and fecal pellets were assessed. We identified a clear seasonal pattern, with highest vertical flux in May and August (178 ± 202 and 159 ± 79 mg C m<sup>− 2</sup> d<sup>− 1</sup> , respectively). Fluxes in December and March were < 45 mg C m<sup>− 2</sup> d<sup>− 1</sup> . May was characterized by diatom- and Chl a-rich fluxes and high spatial variability, while fluxes in August had a higher contribution of fecal pellets and small flagellates, and were spatially more homogenous. Standing stocks of suspended particulate organic matter were highest in August, suggesting a more efficient retention system in late summer. The strong latitudinal sea-ice gradient and the influence of Atlantic Water probably led to the high spatial variability of vertical flux in spring, due to their influence on primary productivity. We conclude that the efficiency of the biological carbon pump in a prolonged open-water period depends on the reworking of small, slow sinking material into efficiently sinking fecal pellets or aggregates, and the occurrence of mixing.en_US
dc.identifier.citationBodur, Renaud, Goraguer, Amargant I Arumi, Assmy, Dabrowska, Marquardt, Renner, Tatarek, Reigstad. Seasonal patterns of vertical flux in the northwestern Barents Sea under Atlantic Water influence and sea-ice decline. Progress in Oceanography. 2023;219en_US
dc.identifier.cristinIDFRIDAID 2182012
dc.identifier.doi10.1016/j.pocean.2023.103132
dc.identifier.issn0079-6611
dc.identifier.issn1873-4472
dc.identifier.urihttps://hdl.handle.net/10037/31551
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.relation.ispartofBodur, Y.V. (2024). Aspects of the biological carbon pump in the Atlantic sector of the Arctic: Aggregation, vertical flux and pelagic-benthic coupling. (Doctoral thesis). <a href=https://hdl.handle.net/10037/33778>https://hdl.handle.net/10037/33778</a>.
dc.relation.journalProgress in Oceanography
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.titleSeasonal patterns of vertical flux in the northwestern Barents Sea under Atlantic Water influence and sea-ice declineen_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)