Articles | Volume 18, issue 2
https://doi.org/10.5194/cp-18-233-2022
https://doi.org/10.5194/cp-18-233-2022
Research article
 | 
04 Feb 2022
Research article |  | 04 Feb 2022

Co-evolution of the terrestrial and aquatic ecosystem in the Holocene Baltic Sea

Gabriella M. Weiss, Julie Lattaud, Marcel T. J. van der Meer, and Timothy I. Eglinton

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Cited articles

Aichner, B., Herzschuh, U., and Wilkes, H.: Influence of aquatic macrophytes on the stable carbon isotopic signatures of sedimentary organic matter in lakes on the Tibetan Plateau, Org. Geochem., 41, 706–718, https://doi.org/10.1016/j.orggeochem.2010.02.002, 2010. 
Aichner, B., Hilt, S., Périllon, C., Gillefalk, M., and Sachse, D.: Biosynthetic hydrogen isotopic fractionation factors during lipid synthesis in submerged aquatic macrophytes : Effect of groundwater discharge and salinity, Org. Geochem., 113, 10–16, https://doi.org/10.1016/j.orggeochem.2017.07.021, 2017. 
Alhonen, P.: The stages of the Baltic Sea as indicated by the diatom stratigraphy, Societas pro Fauna et Flora Fennica, Helsinki – Helsingfors, available at: https://helda.helsinki.fi/bitstream/handle/10138/36720/299944_092_1971.pdf?sequence=1 (last access: 29 January 2022), 1971. 
Andrén, E., Andrén, T., and Sohlenius, G.: The Holocene history of the southwestern Baltic Sea as reflected in a sediment core from the Bornholm Basin, Boreas, 29, 233–250, https://doi.org/10.1111/j.1502-3885.2000.tb00981.x, 2000. 
Andrén, T., Björck, S., Andrén, E., Conley, D., Zillén, L., and Anjar, J.: The development of the Baltic Sea Basin during the last 130 ka, in: The Baltic Sea Basin, Springer, Berlin, Heidelberg, 75–97, https://doi.org/10.1007/978-3-642-17220-5_4, 2011. 
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Here we study the elemental signatures of plant wax compounds as well as molecules from algae and bacteria to understand how water sources changed over the last 11 000 years in the northeastern part of Europe surrounding the Baltic Sea. Our results show diversity in plant and aquatic microorganisms following the melting of the large ice sheet that covered northern Europe as the regional climate continued to warm. A shift in water source from ice melt to rain also occurred around the same time.