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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Cited articles

Bach, L. T.: Reconsidering the role of carbonate ion concentration in calcification by marine organisms, Biogeosciences, 12, 4939–4951,, 2015. 
Barott, K. L., Perez, S. O., Linsmayer, L. B., and Tresguerres, M.: Differential localization of ion transporters suggests distinct cellular mechanisms for calcification and photosynthesis between two coral species, Am. J. Physiol.-Reg. I., 309, R235–R246, 2015. 
Barton, A., Hales, B., Waldbusser, G. G., Langdon, C., and Felly, R. A.: The Pacific oyster Crassostrea gigas, shows negative correlation to naturally elevated carbon dioxide levels: Implications for near-term ocean acidification effects, Limnol. Oceanogr., 57, 698–710, 2012. 
Beldowski, J., Löffler, A., and Joensuu, L.: Distribution and biogeochemical control of total CO2 and total alkalinity in the Baltic Sea, J. Marine Syst., 81, 252–259, 2010. 
Blaustein, M. P. and Lederer, W. J.: Sodium/Calcium Exchange: Its physiological implications, Physiol. Rev., 79, 763–854, 1999. 
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.
Final-revised paper