Physico-chemical parameters of sediment core PG1972-1 (09-Tik-03) from a Tundra Lake, Northeastern Siberia ...

• Main Authors: Biskaborn, Boris K, Herzschuh, Ulrike, Bolshiyanov, Dimitry Yu, Savelieva, Larissa A, Zibulski, Romy, Diekmann, Bernhard
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2013
• Subjects: SibLake; Permafrost Research Periglacial Dynamics @ AWI AWI_PerDyn; lena delta; lena river; permafrost; Thermokarst; Tundra; Siberia
• Online Access: https://dx.doi.org/10.1594/pangaea.833611; https://doi.pangaea.de/10.1594/PANGAEA.833611

Thermokarst lakes in the Siberian Arctic contain sediment archives that can be used for paleoenvironmental inference. Until now, however, there has been no study from the inner Lena River Delta with a focus on diatoms. The objective of this study was to investigate how the diatom community in a thermokarst lake responded to past limnogeological changes and what specific factors drove variations in the diatom assemblage. We analysed fossil diatom species, organic content, grain-size distribution and elemental composition in a sediment core retrieved in 2009 from a shallow thermokarst lake in the Arga Complex, western Lena River Delta. The core contains a 3,000-year record of sediment accumulation. Shifts in the predominantly benthic and epiphytic diatom species composition parallel changes in sediment characteristics. Paleoenvironmental and limnogeological development, inferred from multiple biological and sedimentological variables, are discussed in the context of four diatom zones, and indicate a strong ... : Supplement to: Biskaborn, Boris K; Herzschuh, Ulrike; Bolshiyanov, Dimitry Yu; Savelieva, Larissa A; Zibulski, Romy; Diekmann, Bernhard (2013): Late Holocene thermokarst variability inferred from diatoms in a lake sediment record from the Lena Delta, Siberian Arctic. Journal of Paleolimnology, 49(2), 155-170 ...