Projects

© JAMSTEC/IODP

Füramoos, South Germany

In order to investigate the response of the vegetation in Central Europe north of the Alps to abrupt climate change during the marine isotopic stages (MIS) 5 to 1 temporally in high resolution, two 18 m long, overlapping core holes in the reed of Füramoos (Kreis Biberach, Southern Germany) were drilled in December 2015.

photos: ©J. Pross, Uni Heidelberg

projekt description

Reaction of vegetation in Central Europe on abrupt climate change

photo: ©J. Pross, Uni Heidelberg

An earlier study has shown that Füramoos is the longest known vegetation archive of the late quaternary north of the Alps. In particular pollen-bearing sediments from MIS 4 and 3 are almost completely present in contrast to most other archives north of the Alps. This allows to reconstruct vegetation dynamics in Central Europe over a period characterized by extreme, very short-term climate fluctuations, which is also of prime importance from a prehistoric perspective. Because of its direct proximity to the sites of the oldest figurative art of mankind in the Blautal valley, the archives of Füramoos offer the opportunity to reconstruct the climate and environmental conditions for the direct habitat of the early homo sapiens active in the Bautal valley.

Previous studies on the Füramoos archive were based on hand-held cores and were carried out only in comparatively low temporal resolution (average ~ 600 a). The newly explored material now allows to increase the temporal resolution in such a way that the response of the vegetation to abrupt climate fluctuations, as documented in Greenland ice cores, is recorded in detail. In addition, large sample volumes are available on the basis of the core diameters of 10 cm so that, in addition to pollen, other biotic proxies (e.g., chironomides) can also be analyzed. Besides a detailed reconstruction of vegetation dynamics, the "migration lags" between the occurrence in Füramoos and the climate signals documented in Greenland ice cores are to be determined taxon-specifically on the basis of the palynological data to be obtained. Further quantitative pollen-based climatic reconstructions are to be carried out, ensured or refined in a collaboration with Prof. Oliver Heiri (Institute of Plant Sciences, University of Bern) by chironomids.

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