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dc.contributor.authorBorrelli, Chiara
dc.contributor.authorPanieri, Giuliana
dc.contributor.authorDahl, Trine Merete
dc.contributor.authorNeufeld, Kai
dc.date.accessioned2018-08-17T12:20:32Z
dc.date.available2018-08-17T12:20:32Z
dc.date.issued2018
dc.description.abstractThis work shows that calcareous benthic foraminifera are capable of agglutinating sedimentary particles also. In particular, we focus on Melonis barleeanus. Traditionally considered a calcareous species, our data revealed the presence of minute (~3 μm) sedimentary particles (silicate grains) inside the chamber walls of the examined shells. These particles were arranged in a definitive and systematic pattern, and the similar grain chemical characterization and size suggested a relatively high degree of selectivity in both modern and fossil specimens. Based on these results, we propose that M. barleeanus is capable of agglutinating sedimentary particles during the formation of a new chamber. The analysis of other calcareous foraminiferal species (e.g., Cassidulina neoteretis, Lobatula lobatula, Nonionella stella) did not reveal the presence of silicate grains in the shell of the specimens analyzed confirming this to be a characteristic of M. barleeanus. Considering that the isotopic and chemical composition of this species is widely used in paleoclimatic and paleoceanographic reconstructions, we used a mixing model to better constrain the influence of sedimentary particles on M. barleeanus δ<sup>18</sup>O data. Our model showed that the calcite δ<sup>18</sup>O would increase by ~0.9–2‰ if 10 wt% of feldspars (i.e., anorthite, albite, orthoclase) and quartz, respectively, were included in the analyzed shell. Based on these results, we emphasize that it is of paramount importance to consider M. barleeanus unusual biomineralization strategy during the interpretation of geological records and to investigate the presence of similar processes in other calcareous foraminiferal species.en_US
dc.descriptionSource at <a href=https://doi.org/10.1038/s41598-018-28400-2> https://doi.org/10.1038/s41598-018-28400-2</a>. Licensed <a href=http://creativecommons.org/licenses/by-nc-nd/4.0/> CC BY-NC-ND 4.0.</a>en_US
dc.identifier.citationBorrelli, C., Panieri, G., Dahl, T.M. & Neufeld, K. (2018). Novel biomineralization strategy in calcareous foraminifera. Scientific Reports, 8(10201). https://doi.org/10.1038/s41598-018-28400-2en_US
dc.identifier.cristinIDFRIDAID 1600679
dc.identifier.doi10.1038/s41598-018-28400-2
dc.identifier.issn2045-2322
dc.identifier.urihttps://hdl.handle.net/10037/13472
dc.language.isoengen_US
dc.publisherNature Publishing Groupen_US
dc.relation.journalScientific Reports
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/SFF/223259/Norway/Centre for Arctic Gas Hydrate, Environment and Climate/CAGE/en_US
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/PETROMAKS2/255150/Norway/Norwegian margin fluid systems and methane- derived carbonate crusts - Recent scientific advances in service of petroleum exploration//en_US
dc.rights.accessRightsopenAccessen_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Marin geologi: 466en_US
dc.subjectVDP::Mathematics and natural science: 400::Geosciences: 450::Marine geology: 466en_US
dc.titleNovel biomineralization strategy in calcareous foraminiferaen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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