TY  - JOUR
A1  - Geng, Rongwei
A1  - Andreev, Andrei
A1  - Kruse, Stefan
A1  - Heim, Birgit
A1  - van Geffen, Femke
A1  - Pestryakova, Luidmila
A1  - Zakharov, Evgenii
A1  - Troeva, Elena I.
A1  - Shevtsova, Iuliia
A1  - Li, Furong
A1  - Zhao, Yan
A1  - Herzschuh, Ulrike
T1  - Modern pollen assemblages from lake sediments and soil in East Siberia and relative pollen productivity estimates for Major Taxa
T2  - Frontiers in Ecology and Evolution
N2  - Modern pollen-vegetation-climate relationships underpin palaeovegetation and palaeoclimate reconstructions from fossil pollen records. East Siberia is an ideal area for investigating the relationships between modern pollen assemblages and near natural vegetation under cold continental climate conditions. Reliable pollen-based quantitative vegetation and climate reconstructions are still scarce due to the limited number of modern pollen datasets. Furthermore, differences in pollen representation of samples from lake sediments and soils are not well understood. Here, we present a new pollen dataset of 48 moss/soil and 24 lake surface-sediment samples collected in Chukotka and central Yakutia in East Siberia. The pollen-vegetation-climate relationships were investigated by ordination analyses. Generally, tundra and taiga vegetation types can be well distinguished in the surface pollen assemblages. Moss/soil and lake samples contain generally similar pollen assemblages as revealed by a Procrustes comparison with some exceptions. Overall, modern pollen assemblages reflect the temperature and precipitation gradients in the study areas as revealed by constrained ordination analysis. We estimate the relative pollen productivity (RPP) of major taxa and the relevant source area of pollen (RSAP) for moss/soil samples from Chukotka and central Yakutia using Extended R-Value (ERV) analysis. The RSAP of the tundra-forest transition area in Chukotka and taiga area in central Yakutia are ca. 1300 and 360 m, respectively. For Chukotka, RPPs relative to both Poaceae and Ericaceae were estimated while RPPs for central Yakutia were relative only to Ericaceae. Relative to Ericaceae (reference taxon, RPP = 1), Larix, Betula, Picea, and Pinus are overrepresented while Alnus, Cyperaceae, Poaceae, and Salix are underrepresented in the pollen spectra. Our estimates are in general agreement with previously published values and provide the basis for reliable quantitative reconstructions of East Siberian vegetation.
KW  - modern pollen assemblages
KW  - pollen-vegetation-climate relationships
KW  - East Siberia
KW  - tundra
KW  - taiga
KW  - relative pollen productivity
KW  - quantitative vegetation reconstruction
Y1  - 2022
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/64166
SN  - 2296-701X
VL  - 10
PB  - Frontiers Media
CY  - Lausanne
ER  -