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Can We Use Tree Rings of Black Alder to Reconstruct Lake Levels? A Case Study for the Mecklenburg Lake District, Northeastern Germany

Urheber*innen

van der Maaten,  Ernst
External Organizations;

van der Maaten-Theunissen,  Marieke
External Organizations;

Buras,  Allan
External Organizations;

Scharnweber,  Tobias
External Organizations;

/persons/resource/simard

Simard,  Sonia
5.2 Climate Dynamics and Landscape Evolution, 5.0 Earth Surface Processes, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

/persons/resource/kaiserk

Kaiser,  K.
Staff Scientific Executive Board, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Lorenz,  Sebastian
External Organizations;

Wilmking,  Martin
External Organizations;

Zhu,  Liping
External Organizations;

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1284900.pdf
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Zitation

van der Maaten, E., van der Maaten-Theunissen, M., Buras, A., Scharnweber, T., Simard, S., Kaiser, K., Lorenz, S., Wilmking, M. (2015): Can We Use Tree Rings of Black Alder to Reconstruct Lake Levels? A Case Study for the Mecklenburg Lake District, Northeastern Germany. - Plos One, 10, 8, e0137054.
https://doi.org/10.1371/journal.pone.0137054


Zitierlink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_1284900
Zusammenfassung
In this study, we explore the potential to reconstruct lake-level (and groundwater) fluctuations from tree-ring chronologies of black alder (Alnus glutinosa L.) for three study lakes in the Mecklenburg Lake District, northeastern Germany. As gauging records for lakes in this region are generally short, long-term reconstructions of lake-level fluctuations could provide valuable information on past hydrological conditions, which, in turn, are useful to assess dynamics of climate and landscape evolution. We selected black alder as our study species as alder typically thrives as riparian vegetation along lakeshores. For the study lakes, we tested whether a regional signal in lake-level fluctuations and in the growth of alder exists that could be used for long-term regional hydrological reconstructions, but found that local (i.e. site-specific) signals in lake level and tree-ring chronologies prevailed. Hence, we built lake/groundwater-level reconstruction models for the three study lakes individually. Two sets of models were considered based on (1) local tree-ring series of black alder, and (2) site-specific Standardized Precipitation Evapotranspiration Indices (SPEI). Although the SPEI-based models performed statistically well, we critically reflect on the reliability of these reconstructions, as SPEI cannot account for human influence. Tree-ring based reconstruction models, on the other hand, performed poor. Combined, our results suggest that, for our study area, long-term regional reconstructions of lake-level fluctuations that consider both recent and ancient (e.g., archaeological) wood of black alder seem extremely challenging, if not impossible.