Microbial Reworking of Organic Matter in Marine Sediments Revealed by Carbon Isotopic Compositions of Individual Amino Acids

孫 語辰; 小川 奈々子; 石川 尚人; 黒田 潤一郎; 高野 淑識; 大河内 直彦

doi:10.14862/geochemproc.69.0_19

Abstracts of Annual Meeting of the Geochemical Society of Japan

DOI https://doi.org/10.14862/geochemproc.69.0_19

Conference information

Host: Abstracts of Annual Meeting of the Geochemical Society of Japan

Name : Abstracts of Annual Meeting of the Geochemical Society of Japan

Number : 69

Date : September 05, 2022 - September 16, 2022

Microbial Reworking of Organic Matter in Marine Sediments Revealed by Carbon Isotopic Compositions of Individual Amino Acids

*Yuchen Sun, Nanako O. Ogawa, Naoto F. Ishikawa, Junichiro Kuroda, Yoshinori Takano, Naohiko Ohkouchi

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Keywords: Amino Acid, Carbon Isotope, Marine Sediment

CONFERENCE PROCEEDINGS FREE ACCESS

Pages 19-

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Abstract

We studied the microbial reworking of organic matter in marine sediments using the stable carbon isotopic compositions of individual amino acids. We found that about 20-40% of amino acids in marine sediments are derived from microbial biomass, and the reworking process in marine sediments mainly occur in the very early stage of diagenesis.

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