Palaeoenvironmental history of Lake Baikal during the last 23000 years

K. Horiuchi, K. Minoura, K. Hoshino, T. Oda, T. Nakamura, T. Kawai

研究成果: Article査読

88 被引用数 (Scopus)

抄録

A sediment core recovered from Lake Baikal was studied in an attempt to elucidate the palaeoenvironmental history of an intra-continental lake under the control of last-glacial to post-glacial climatic fluctuations. The lake conditions were characterised by subdued primary production and increased turbidity conditions during the last glacial maximum. Terrestrial vegetation and the development of soil layers were reduced in the drainage areas. The deglaciation, suggested by increased terrigenous sand influx and biological productivity, took place at around 18 000 yr B.P., responding to the increased insolation in the Northern Hemisphere high latitude. The onset of wet and warm conditions at ca. 12 000 yr B.P. brought on a maximum of aquatic production and forestal expansion between 7 000 and 6 000 yr B.P. Since 5 000 yr B.P., enhanced blooming of diatoms has occurred due to an increased nutrient supply and dissolved silica input into the lake. (C) 2000 Elsevier Science B.V.

本文言語English
ページ(範囲)95-108
ページ数14
ジャーナルPalaeogeography, Palaeoclimatology, Palaeoecology
157
1-2
DOI
出版ステータスPublished - 2000 3月 15
外部発表はい

ASJC Scopus subject areas

  • 海洋学
  • 生態、進化、行動および分類学
  • 地表過程
  • 古生物学

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