Biogeosciences
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Articles | Volume 13, issue 8
Articles | Volume 13, issue 8
https://doi.org/10.5194/bg-13-2475-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/bg-13-2475-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 13, issue 8
Research article
 | 
27 Apr 2016
Research article |  | 27 Apr 2016

Recording of climate and diagenesis through sedimentary DNA and fossil pigments at Laguna Potrok Aike, Argentina

Aurèle Vuillemin, Daniel Ariztegui, Peter R. Leavitt, Lynda Bunting, and the PASADO Science Team

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Short summary
Aquatic sediments record climatic conditions while providing ecological niches for microorganisms. In lacustrine settings, the relationship between environmental features and sedimentary DNA remains largely unknown. Comparison of microbial assemblages with fossil pigments show that the subsurface biosphere is specific to climatic intervals and that post-depositional processes result in a rapid overprint of phototrophic communities by heterotrophic assemblages with preserved pigment compositions.
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