Palynology and radiocarbon dating on sediment profile PG1756 from Lake Billyakh, NE Siberia, Russia ...

• Main Authors: Müller, Stefanie, Tarasov, Pavel E, Andreev, Andrei A, Diekmann, Bernhard
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2008
• Subjects: Piston corer, UWITEC; RU-Land_2005_Verkhoyansk; AWI Arctic Land Expedition; Integrierte Analyse zwischeneiszeitlicher Klimadynamik INTERDYNAMIK; Permafrost Research Periglacial Dynamics @ AWI AWI_PerDyn; Arctic; Verkhoyansk; Climate change; permafrost; Tundra; Siberia
• Online Access: https://dx.doi.org/10.1594/pangaea.708170; https://doi.pangaea.de/10.1594/PANGAEA.708170

In this study a radiocarbon-dated pollen record from Lake Billyakh (65°17'N, 126°47'E; 340 m a.s.l.) in the Verkhoyansk Mountains was used to reconstruct vegetation and climate change since about 15 kyr BP (1 kyr=1000 cal. yr). The pollen record and pollen-based biome reconstruction suggest that open cool steppe and grass and sedge tundra communities with Poaceae, Cyperaceae, Artemisia, Chenopodiaceae, Caryophyllaceae and Selaginella rupestris dominated the area from 15 to 13.5 kyr BP. On the other hand, the constant presence of Larix pollen in quantities comparable to today's values points to the constant presence of boreal deciduous conifer trees in the regional vegetation during the last glaciation. A major spread of shrub tundra communities, including birch (Betula sect. Nanae), alder (Duschekia fruticosa) and willow (Salix) species, is dated to 13.5-12.7 kyr BP, indicating a noticeable increase in precipitation toward the end of the last glaciation, particularly during the Allerød Interstadial. Between ... : Supplement to: Müller, Stefanie; Tarasov, Pavel E; Andreev, Andrei A; Diekmann, Bernhard (2009): Late Glacial to Holocene environments in the present-day coldest region of the Northern Hemisphere inferred from a pollen record of Lake Billyakh, Verkhoyansk Mts, NE Siberia. Climate of the Past, 5, 73-84 ...