Gutenberg Open Science: Strong coupling between biomineral morphology and Sr/Ca of Arctica islandica (Bivalvia) : implications for Shell Sr/Ca-based temperature estimates

Please use this identifier to cite or link to this item: http://doi.org/10.25358/openscience-6893

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DC Field	Value	Language
dc.contributor.author	Brosset, Cornélia	-
dc.contributor.author	Höche, Nils	-
dc.contributor.author	Shirai, Kotaro	-
dc.contributor.author	Mertz-Kraus, Regina	-
dc.contributor.author	Schöne, Bernd R.	-
dc.date.accessioned	2022-04-20T10:42:34Z	-
dc.date.available	2022-04-20T10:42:34Z	-
dc.date.issued	2022	-
dc.identifier.uri	https://openscience.ub.uni-mainz.de/handle/20.500.12030/6904	-
dc.description.abstract	Bivalve shells serve as powerful high-resolution paleoclimate archives. However, the number of reliable temperature proxies is limited. It has remained particularly difficult to extract temperature signals from shell Sr/Ca, although Sr is routinely employed in other biogenic aragonites. In bivalves, Sr/Ca is linked to the prevailing microstructure and is sometimes affected by kinetics. Here, the hypothesis is tested that temperature can be reconstructed from shell Sr/Ca once microstructure and/or growth-rate-related bias has been mathematically eliminated. Therefore, the relationship between Sr/Ca and increment width, as well as biomineral unit size, has been studied in three different shell portions of field-grown Arctica islandica specimens. Subsequently, microstructure and/or growth-rate-related variation was removed from Sr/Ca data and residuals compared to temperature. As demonstrated, the hypothesis could not be verified. Even after detrending, Sr/Ca remained positively correlated to water temperature, which contradicts thermodynamic expectations and findings from inorganic aragonite. Any temperature signal potentially recorded by shell Sr/Ca is overprinted by other environmental forcings. Unless these variables are identified, it will remain impossible to infer temperature from Sr/Ca. Given the coupling with the biomineral unit size, a detailed characterization of the microstructure should remain an integral part of subsequent attempts to reconstruct temperature from Sr/Ca.	en_GB
dc.description.sponsorship	Gefördert durch die Deutsche Forschungsgemeinschaft (DFG) - Projektnummer 491381577	-
dc.language.iso	eng	de
dc.rights	CC BY	*
dc.rights.uri	https://creativecommons.org/licenses/by/4.0/	*
dc.subject.ddc	550 Geowissenschaften	de_DE
dc.subject.ddc	550 Earth sciences	en_GB
dc.subject.ddc	560 Paläontologie	de_DE
dc.subject.ddc	560 Paleontology	en_GB
dc.title	Strong coupling between biomineral morphology and Sr/Ca of Arctica islandica (Bivalvia) : implications for Shell Sr/Ca-based temperature estimates	en_GB
dc.type	Zeitschriftenaufsatz	de
dc.identifier.doi	http://doi.org/10.25358/openscience-6893	-
jgu.type.contenttype	Scientific article	de
jgu.type.dinitype	article	en_GB
jgu.type.version	Published version	de
jgu.type.resource	Text	de
jgu.organisation.department	FB 09 Chemie, Pharmazie u. Geowissensch.	de
jgu.organisation.number	7950	-
jgu.organisation.name	Johannes Gutenberg-Universität Mainz	-
jgu.rights.accessrights	openAccess	-
jgu.journal.title	Minerals	de
jgu.journal.volume	12	de
jgu.journal.issue	5	de
jgu.pages.alternative	500	de
jgu.publisher.year	2022	-
jgu.publisher.name	MPDI	de
jgu.publisher.place	Basel	de
jgu.publisher.issn	2075-163X	de
jgu.organisation.place	Mainz	-
jgu.subject.ddccode	550	de
jgu.subject.ddccode	560	de
jgu.publisher.doi	10.3390/min12050500	de
jgu.organisation.ror	https://ror.org/023b0x485	-
jgu.subject.dfg	Naturwissenschaften	-
Appears in collections:	DFG-491381577-G

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