Can element chemical impurities in aragonitic shells of marine bivalves serve as proxies for environmental variability?

Schöne, Bernd R.; Jantschke, Anne; Mertz‐Kraus, Regina; Butler, Paul; Fröhlich, Lukas

doi:10.1016/j.chemgeo.2022.121215

Chemical Geology

2023

DOI: 10.1016/j.chemgeo.2022.121215

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Can element chemical impurities in aragonitic shells of marine bivalves serve as proxies for environmental variability?

Bernd R. Schöne

Anne Jantschke

Regina Mertz‐Kraus

et al.

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Cited by 6 publications

(1 citation statement)

References 142 publications

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“…Notably, Ba/Ca shell peaks occurred highly synchronously among specimens growing at the same locality and time (e.g., Gillikin et al 2008; Barats et al 2009; Thébault et al 2009 a ). Whereas Ba/Ca shell peaks typically correlate weakly with chlorophyll a concentration (e.g., Gillikin et al 2008; Fröhlich et al 2022 b ; Schöne et al 2023), they seem to be strongly linked to blooms of specific phytoplankton taxa, especially diatoms containing species‐specific loads of cellular Ba (e.g., Roth and Riley 1971; Fisher et al 1991; Sternberg et al 2005). Furthermore, profiles of molybdenum‐to‐calcium ratios (Mo/Ca) and lithium‐to‐calcium ratios (Li/Ca) in scallop shells exhibited similar patterns as Ba/Ca shell .…”

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confidence: 99%

Uptake of barium, molybdenum, and lithium and incorporation into scallop shells: Refining proxies for primary production dynamics

Fröhlich,

Siebert,

Huang

et al. 2023

Limnology & Oceanography

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Ba/Cashell, Mo/Cashell, and Li/Cashell chronologies of Pecten maximus can provide information on past phytoplankton dynamics. Distinct Ba, Mo, and Li peaks in the shells are associated with algal blooms. This study evaluated the underlying hypothesis that respective element profiles reliably record variations in phytoplankton dynamics occurring within the water column. Therefore, the chemical content of scallops from the Bay of Brest, France, that lived on the sediment surface was compared to conspecific specimens living in a cage above the seafloor and compared with the phytoplankton abundance and the physicochemical properties of the water column. As demonstrated, Ba/Cashell and Mo/Cashell peaks occurred contemporaneously in specimens within the cage and on the sediment, but were higher in the latter. Furthermore, element/Ca peaks agreed with the timing of particulate Ba and Mo enrichments in the seawater. These data support the assumption of a dietary uptake of both elements. Differences in peak heights between shells living in a cage and on the seafloor were controlled by rates of filtration and biomineralization. While the timing and magnitude of Ba/Cashell peaks were linked to Ba‐containing diatoms, Mo/Cashell peaks were related to blooms of Mo‐enriched dinoflagellate and diatom aggregation events. Two episodes of slight Li enrichment occurred synchronously in cage and sediment shells. Although the exact mechanism causing such Li increases remains unresolved, the findings suggest a link to large diatom blooms or the presence of a specific diatom taxon. This study refines previously hypothesized relationships between trace element enrichments in scallop shells and phytoplankton dynamics.

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confidence: 99%

Uptake of barium, molybdenum, and lithium and incorporation into scallop shells: Refining proxies for primary production dynamics

Fröhlich,

Siebert,

Huang

et al. 2023

Limnology & Oceanography

Self Cite

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An invasive bivalve with the potential to reconstruct chronologies of geomarkers in a large South American basin

Avigliano,

Pouilly,

Clavijo

et al. 2024

Environ Sci Pollut Res

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Trace elements in bivalve shells: How “vital effects” can bias environmental studies

Barrat,

Chauvaud,

Olivier

et al. 2023

Chemical Geology

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Can element chemical impurities in aragonitic shells of marine bivalves serve as proxies for environmental variability?

Cited by 6 publications

References 142 publications

Uptake of barium, molybdenum, and lithium and incorporation into scallop shells: Refining proxies for primary production dynamics

Uptake of barium, molybdenum, and lithium and incorporation into scallop shells: Refining proxies for primary production dynamics

An invasive bivalve with the potential to reconstruct chronologies of geomarkers in a large South American basin

Trace elements in bivalve shells: How “vital effects” can bias environmental studies

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