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dc.contributor.authorWeydmann-Zwolicka, Agata
dc.contributor.authorPrątnicka, Paula
dc.contributor.authorŁącka, Magdalena
dc.contributor.authorMajaneva, Sanna
dc.contributor.authorCottier, Finlo Robert
dc.contributor.authorBerge, Jørgen
dc.date.accessioned2022-01-10T14:24:03Z
dc.date.available2022-01-10T14:24:03Z
dc.date.issued2021-02-04
dc.description.abstractSvalbard fjords are facing a significant increase in Atlantic water inflow, which influences all ecosystem components, thus the objective of this study was to assess how recent Atlantification impacts the functioning of zooplankton community. For this purpose, two year-round operating sediment traps and associated hydrographic instruments, providing continuous time series of zooplankton and sediment fluxes, were deployed in the Atlantic-influenced Kongsfjorden and the typical high Arctic fjord Rijpfjorden. We used multivariate statistical methods to analyze how environmental variables, including the sediment fluxes, influence the zooplankton communities in the fjords. We found out that sedimentation rates were an order of magnitude higher in Kongsfjorden (reaching 39.7 g m−2 d−1 in December) and increased in autumn, while in Rijpfjorden, they peaked in late winter - early spring (2.9 g m−2 d−1 in February). Such sediment flux patterns might result from the redeposition of sediments from shallower, subtidal areas and were probably connected to autumn/winter storms. According to multivariate analyses, zooplankton in Kongsfjorden were significantly influenced by water temperature, which explained 22% of their variation, and the flux of organic and mineral sediments explaining 15% and 7.8%, respectively; while in Rijpfjorden, it was sea ice (25.3%), water temperature (16.2%), salinity (8.1%), and mineral sedimentation (6.3%). The structure of zooplankton communities in both fjords was similar in winter; in Kongsfjorden, zooplankton kept developing through spring and summer, while in the Arctic Rijpfjorden, the community paused until the onset of phytoplankton bloom and sea ice break-up in summer, to finally achieve, in autumn, a similar species and development stage structure as summer in the Atlantic-influenced fjord. Our study demonstrates how integrating multiple pieces of information can provide key insights into the relations between Atlantification, sediment flux, and zooplankton community, thus helping to assess the functioning of high Arctic ecosystems under climate change conditions.en_US
dc.identifier.citationWeydmann-Zwolicka, Prątnicka, Łącka, Majaneva, Cottier FR, Berge. Zooplankton and sediment fluxes in two contrasting fjords reveal Atlantification of the Arctic. Science of the Total Environment. 2021;773en_US
dc.identifier.cristinIDFRIDAID 1900645
dc.identifier.doi10.1016/j.scitotenv.2021.145599
dc.identifier.issn0048-9697
dc.identifier.issn1879-1026
dc.identifier.urihttps://hdl.handle.net/10037/23656
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.relation.journalScience of the Total Environment
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/POLARPROG/244319/Norway/Arctic Ocean ecosystems - Applied technology, Biological interactions and Consequences in an era of abrupt climate change//en_US
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2021 The Author(s)en_US
dc.titleZooplankton and sediment fluxes in two contrasting fjords reveal Atlantification of the Arcticen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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