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Geochemical Journal
Geochemical Journal An open access journal for geochemistry
Published for geochemistry community from Geochemical Society of Japan.

2.8 million years of phytoplankton history in Lake Baikal recorded by the residual photosynthetic pigments in its sediment core

Yuko Soma, Atsushi Tanaka, Mitsuyuki Soma, Takayoshi Kawai
Geochemical Journal, Vol. 35, No. 5, P. 377-383, 2001


We have been able to reconstruct the changes that have occurred in the phytoplankton community of Lake Baikal over the past 2.8 million years (Ma) by measuring the abundance of residual steryl chlorin esters (SCEs) in the 0–100m section of the 600 m long BDP98 sediment core. The sterol composition of SCEs showed remarkable variations among interglacial periods, and green algae and dinoflagellates, apart from diatoms, had been abundant in Lake Baikal until 1.2 Ma ago.

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