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Compositional turnover and variation in Eemian pollen sequences in Europe

Vivian Felde 1, 2, * Suzette Flantua 1 Cathy Jenks 1 Blas Benito 1 Jacques-Louis de Beaulieu 3 Petr Kuneš 4 Donatella Magri 5 Dorota Nalepka 6 Bjørg Risebrobakken 7 Cajo ter Braak 8 Judy Allen 9 Wojciech Granoszewski 10 Karin Helmens 11 Brian Huntley 9 Ona Kondratienė 12 Laimdota Kalniņa 13 Mirosława Kupryjanowicz 14 Małgorzata Malkiewicz 15 Alice Milner 16 Małgorzata Nita 17 Bożena Noryśkiewicz 18 Irena Pidek 19 Maurice Reille 3 Sakari Salonen 20 Vaida Šeirienė 12 Hanna Winter 21 Polychronis Tzedakis 22 John Birks 2, 1, 22
* Corresponding author
Abstract : The Eemian interglacial represents a natural experiment on how past vegetation with negligible human impact responded to amplified temperature changes compared to the Holocene. Here, we assemble 47 carefully selected Eemian pollen sequences from Europe to explore geographical patterns of (1) total compositional turnover and total variation for each sequence and (2) stratigraphical turnover between samples within each sequence using detrended canonical correspondence analysis, multivariate regression trees, and principal curves. Our synthesis shows that turnover and variation are highest in central Europe (47-55°N), low in southern Europe (south of 45°N), and lowest in the north (above 60°N). These results provide a basis for developing hypotheses about causes of vegetation change during the Eemian and their possible drivers.
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Vivian Felde, Suzette Flantua, Cathy Jenks, Blas Benito, Jacques-Louis de Beaulieu, et al.. Compositional turnover and variation in Eemian pollen sequences in Europe. Vegetation History and Archaeobotany, Springer Verlag, 2019. ⟨hal-02091016⟩

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