Biogeosciences
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Articles | Volume 15, issue 5
Articles | Volume 15, issue 5
https://doi.org/10.5194/bg-15-1469-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-15-1469-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 15, issue 5
Research article
 | 
09 Mar 2018
Research article |  | 09 Mar 2018

Calcification in a marginal sea – influence of seawater [Ca2+] and carbonate chemistry on bivalve shell formation

Jörn Thomsen, Kirti Ramesh, Trystan Sanders, Markus Bleich, and Frank Melzner

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Short summary
The distribution of mussel in estuaries is limited but the mechanisms are not well understood. We document for the first time that reduced Ca2+ concentration in the low saline, brackish Baltic Sea affects the ability of mussel larvae to calcify the first larval shell. As complete formation of the shell is a prerequisite for successful development, impaired calcification during this sensitive life stage can have detrimental effects on the species' ability to colonize habitats.
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