EGU21-12546, updated on 04 Mar 2021
EGU General Assembly 2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Modern pollen-vegetation-climate relationships and pollen productivity estimates for common East Siberian taxa

Rongwei Geng1,2,3, Andrei Andreev1, Stefan Kruse1, Yan Zhao2,3, Ulrike Herzschuh1, Luidmila Pestraykova4, and Evgenii Zakharov4,5
Rongwei Geng et al.
  • 1Alfred Wegener Institute for Polar and Marine Research, Potsdam, Germany
  • 2Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China
  • 3University of Chinese Academy of Sciences, Beijing, China
  • 4North-Eastern Federal University of Yakutsk, Yakutsk, Russia
  • 5Institute for Biological Problems of the Cryolithozone, Russian Academy of Sciences, Siberian branch, Yakutsk, Russia

East Siberia is an ideal area for investigating the relationships between modern pollen assemblages and vegetation under the extremely cold and dry climate conditions. These relationships are the basis of paleovegetation and paleoclimate reconstructions from fossil pollen records. Pollen productivity estimates (PPE) are required for reliable pollen-based quantitative vegetation reconstructions. Here, we present a new pollen dataset of 48 moss/soil and 24 lake surface sediment samples collected from Chukotka and Yakutia. Generally, tundra and taiga vegetation sites can be well distinguished in the surface pollen assemblages from East Siberia. Moss/soil and lake samples have mostly similar pollen assemblages but contents of some pollen taxa may vary significantly in different sample types. We classified drone images based on field survey to obtain high-resolute vegetation data. Pollen counts in moss/soil samples and vegetation data can? be used in the Extended R-Value (ERV) model to estimate the relevant source area of pollen (RSAP) and the PPEs of major plant taxa. The result of PPE calculation for most common taxa (Alnus, Betula, Cyperaceae, Ericaceae, Larix, Pinus and Salix) can be used to improve vegetation reconstructions.

How to cite: Geng, R., Andreev, A., Kruse, S., Zhao, Y., Herzschuh, U., Pestraykova, L., and Zakharov, E.: Modern pollen-vegetation-climate relationships and pollen productivity estimates for common East Siberian taxa, EGU General Assembly 2021, online, 19–30 Apr 2021, EGU21-12546,, 2021.


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