Articles | Volume 21, issue 9
https://doi.org/10.5194/hess-21-4283-2017
https://doi.org/10.5194/hess-21-4283-2017
Research article
 | 
31 Aug 2017
Research article |  | 31 Aug 2017

Carbon isotopes of dissolved inorganic carbon reflect utilization of different carbon sources by microbial communities in two limestone aquifer assemblages

Martin E. Nowak, Valérie F. Schwab, Cassandre S. Lazar, Thomas Behrendt, Bernd Kohlhepp, Kai Uwe Totsche, Kirsten Küsel, and Susan E. Trumbore

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ED: Publish subject to revisions (further review by Editor and Referees) (25 Apr 2017) by Bill X. Hu
AR by Martin Nowak on behalf of the Authors (07 Jun 2017)  Author's response   Manuscript 
ED: Publish as is (23 Jun 2017) by Bill X. Hu
AR by Martin Nowak on behalf of the Authors (02 Jul 2017)  Manuscript 
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Short summary
In the present study we combined measurements of dissolved inorganic carbon (DIC) isotopes with a set of different geochemical and microbiological methods in order to get a comprehensive view of biogeochemical cycling and groundwater flow in two limestone aquifer assemblages. This allowed us to understand interactions and feedbacks between microbial communities, their carbon sources, and water chemistry.