Vis enkel innførsel

dc.contributor.authorIglikowska, Anna
dc.contributor.authorKrzemińska, Małgorzata
dc.contributor.authorRenaud, Paul Eric
dc.contributor.authorBerge, Jørgen
dc.contributor.authorHop, Haakon
dc.contributor.authorKuklinski, Piotr
dc.date.accessioned2021-05-31T20:01:14Z
dc.date.available2021-05-31T20:01:14Z
dc.date.issued2020-10-02
dc.description.abstract<p>In the Arctic, seasonal patterns in seawater biochemical conditions are shaped by physical, chemical, and biological processes related to the alternation of seasons, i.e. winter polar night and summer midnight sun. In summertime, CO<sub>2</sub> concentration is driven by photosynthetic activity of autotrophs which raises seawater pH and carbonate saturation state (Ω). In addition, restriction of photosynthetic activity to the euphotic zone and establishment of seasonal stratification often leads to depth gradients in pH and Ω. In winter, however, severely reduced primary production along with respiration processes lead to higher CO<sub>2</sub> concentrations which consequently decrease seawater pH and Ω. <p>Many calcifying invertebrates incorporate other metals, in addition to calcium, into their skeletons, with potential consequences for stability of the mineral matrix and vulnerability to abrasion of predators. We tested whether changes in seawater chemistry due to light-driven activities of marine biota can influence the uptake of Mg into calcified skeletons of Arctic Bryozoa, a dominant faunal group in polar hard-bottom habitats. Our results indicate no clear differences between summer and winter levels of skeletal MgCO<sub>3</sub> in five bryozoan species despite differences in Ω between these two seasons. Furthermore, we could not detect any depth-related differences in MgCO<sub>3</sub> content in skeletons of selected bryozoans. These results may indicate that Arctic bryozoans are able to control MgCO<sub>3</sub> skeletal concentrations biologically. Yet recorded spatial variability in MgCO<sub>3</sub> content in skeletons from stations exhibiting different seawater parameters suggests that environmental factors can also, to some extent, shape the skeletal chemistry of Arctic bryozoans.en_US
dc.identifier.citationIglikowska, Krzemińska, Renaud PE, Berge, Hop, Kuklinski. Summer and winter MgCO3 levels in the skeletons of Arctic bryozoans. Marine Environmental Research. 2020;162en_US
dc.identifier.cristinIDFRIDAID 1864424
dc.identifier.doi10.1016/j.marenvres.2020.105166
dc.identifier.issn0141-1136
dc.identifier.issn1879-0291
dc.identifier.urihttps://hdl.handle.net/10037/21295
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.relation.journalMarine Environmental Research
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/POLARPROG/226417/Norway/Mare incognitum - ecological processes during the polar night//en_US
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2020 The Author(s)en_US
dc.subjectVDP::Mathematics and natural science: 400::Basic biosciences: 470::Biochemistry: 476en_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Basale biofag: 470::Biokjemi: 476en_US
dc.titleSummer and winter MgCO3 levels in the skeletons of Arctic bryozoansen_US
dc.type.versionacceptedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


Tilhørende fil(er)

Thumbnail

Denne innførselen finnes i følgende samling(er)

Vis enkel innførsel