古代の堆積物中の陸上高等植物テルペノイドを用いた古植生解析 Reconstruction of paleovegetation based on terrestrial higher plant terpenoid analysis in ancient sediment

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著者

    • 中村 英人 NAKAMURA Hideto
    • 北海道大学大学院理学研究院自然史科学部門地球惑星システム科学分野 Department of Natural History Sciences, Faculty of Science, Hokkaido University
    • 沢田 健 SAWADA Ken
    • 北海道大学大学院理学研究院自然史科学部門地球惑星システム科学分野 Department of Natural History Sciences, Faculty of Science, Hokkaido University

抄録

Terrestrial higher plant terpenoids (HPTs) occurring in ancient marine and lacustrine sediments, are more refractory and constitute a more highly diversified family of molecules than the other terrestrial higher plant biomarkers including wax compounds and lignin phenols. Therefore, this HPT biomarker can be plant biogeochemical and paleontological indicators. Triterpenes such as oleanane are derived from various biological triterpenoids synthesized by almost all angiosperms. Diterpenenes such as retene are originated from abietane-type diterpenoids, which are constituents of gymnosperm, especially conifer. In pimarane and phyllocladane type diterpenoids, their precursors, source plants, and diagenetic products have been partly known. In addition, sesquiterpenoids are derived from both angiosperm and gymnosperm biosynthesized compounds. Several researchers have suggested that the HPT distributions were useful as the paleovegetation proxies for reconstructing the relative abundance of angiosperm to gymnosperm (e.g. angiosperm/gymnosperm index; AGI). Moreover, we recently examinated applicability of the indicator for angiosperm/gymnosperm ratio by using the HPTs in ancient plant fossils. In this paper, we review such HPT biomarkers and their applicability and reliability of the indicator as plant chemotaxonomy and paleovegetation in the ancient sediments.

収録刊行物

  • 地球化学

    地球化学 44(4), 205-219, 2010

    日本地球化学会

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各種コード

  • NII論文ID(NAID)
    110009327696
  • NII書誌ID(NCID)
    AN00141280
  • 本文言語コード
    JPN
  • 資料種別
    REV
  • ISSN
    03864073
  • NDL 記事登録ID
    10976386
  • NDL 雑誌分類
    ZM41(科学技術--地球科学)
  • NDL 請求記号
    Z15-645
  • データ提供元
    CJP書誌  NDL  NII-ELS  J-STAGE 
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