Gutenberg Open Science: Deciphering the potential of Ba/Ca, Mo/Ca and Li/Ca profiles in the bivalve shell Pecten maximus as proxies for the reconstruction of phytoplankton dynamics

Please use this identifier to cite or link to this item: http://doi.org/10.25358/openscience-7298

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DC Field	Value	Language
dc.contributor.author	Fröhlich, Lukas	-
dc.contributor.author	Siebert, Valentin	-
dc.contributor.author	Huang, Qian	-
dc.contributor.author	Thébault, Julien	-
dc.contributor.author	Jochum, Klaus Peter	-
dc.contributor.author	Schöne, Bernd R.	-
dc.date.accessioned	2022-07-05T09:51:12Z	-
dc.date.available	2022-07-05T09:51:12Z	-
dc.date.issued	2022	-
dc.identifier.uri	https://openscience.ub.uni-mainz.de/handle/20.500.12030/7312	-
dc.description.abstract	Shells of the fast-growing bivalve Pecten maximus serve as a geochemical archive for the reconstruction of past phytoplankton dynamics. Specifically, high-resolution, temporally accurately aligned molar barium-to-calcium (Ba/Cashell), molybdenum-to-calcium (Mo/Cashell) and lithium-to-calcium ratios (Li/Cashell) of the shell calcite revealed distinct peaks which are closely linked to phytoplankton dynamics. Yet, the development and applicability of these geochemical proxies is still at an early stage and needs further calibration. In this study, we examined the relationship between the timing and magnitude of Ba/Cashell, Mo/Cashell and Li/Cashell peaks of P. maximus and the occurrence of various phytoplankton species (diatoms and dinoflagellates) from a statistical perspective. Studied shell samples (three specimens per calendar year) as well as detailed phytoplankton observation data were derived from the well-studied costal ecosystem of the Bay of Brest (France) over three years (2011, 2012 and 2019). An algorithm-based pseudo-random sampling simulation technique was established that analyzed the complex phytoplankton datasets with respect to the profiles of Ba/Cashell, Mo/Cashell and Li/Cashell to identify potential patterns between phytoplankton and trace element time-series. The simulation results indicate that the timing and magnitude of Ba/Cashell, Mo/Cashell and Li/Cashell peaks agreed best with the occurrence of specific phytoplankton blooms that developed ca. one to two weeks earlier. The data suggest that the formation of transient Ba/Cashell peaks had a plurispecific origin, i.e., potentially linked to blooms of ingestible diatom, dinoflagellate and flagellate species enriched in Ba that occurred 8 to 12 days earlier. Observed peaks in Mo/Cashell profiles demonstrably followed the timing and intensity of blooms of the dominant dinoflagellate genus Gymnodinium spp. after a short time lag of around 8 days, potentially linked to an enhanced enzyme activity of nitrate reductase that requires the presence of Mo in the dinoflagellate cells. In addition, Mo/Cashell peaks agreed with periods of diatom aggregate formation which were hypothesized to induce the formation of Mo/Cashell peaks in scallop shells. Li/Cashell profiles revealed similar patterns as large blooms of the diatom Chaetoceros spp. as well as to neurotoxin producing diatoms of the genus Pseudo-nitzschia when considering a short time lag of 8 to 12 days. These findings highlight the great potential of using Ba/Cashell, Mo/Cashell and Li/Cashell chronologies in P. maximus shells as proxies of past phytoplankton dynamics.	en_GB
dc.description.sponsorship	Gefördert durch die Deutsche Forschungsgemeinschaft (DFG) - Projektnummer 491381577	-
dc.language.iso	eng	de
dc.rights	CC BY-NC-ND	*
dc.rights.uri	https://creativecommons.org/licenses/by-nc-nd/4.0/	*
dc.subject.ddc	500 Naturwissenschaften	de_DE
dc.subject.ddc	500 Natural sciences and mathematics	en_GB
dc.subject.ddc	540 Chemie	de_DE
dc.subject.ddc	540 Chemistry and allied sciences	en_GB
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.subject.ddc	570 Biowissenschaften	de_DE
dc.subject.ddc	570 Life sciences	en_GB
dc.subject.ddc	590 Tiere (Zoologie)	de_DE
dc.subject.ddc	590 Zoological sciences	en_GB
dc.title	Deciphering the potential of Ba/Ca, Mo/Ca and Li/Ca profiles in the bivalve shell Pecten maximus as proxies for the reconstruction of phytoplankton dynamics	en_GB
dc.type	Zeitschriftenaufsatz	de
dc.identifier.doi	http://doi.org/10.25358/openscience-7298	-
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	Ecological indicators	de
jgu.journal.volume	141	de
jgu.pages.alternative	109121	de
jgu.publisher.year	2022	-
jgu.publisher.name	Elsevier Science	de
jgu.publisher.place	Amsterdam u.a.	de
jgu.publisher.issn	1470-160X	de
jgu.organisation.place	Mainz	-
jgu.subject.ddccode	500	de
jgu.subject.ddccode	540	de
jgu.subject.ddccode	550	de
jgu.subject.ddccode	560	de
jgu.subject.ddccode	570	de
jgu.subject.ddccode	590	de
jgu.publisher.doi	10.1016/j.ecolind.2022.109121	de
jgu.organisation.ror	https://ror.org/023b0x485	-
jgu.subject.dfg	Naturwissenschaften	-
Appears in collections:	DFG-491381577-G

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