東京湾河口・内湾表層水中の粒径の異なる懸濁態アミノ酸の分布と挙動  [in Japanese] The amino acids distribution and behaviour of different particle sizes in surface waters of the estuarine and inner part of Tokyo Bay  [in Japanese]

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Author(s)

    • 星 純也 HOSHI Junya
    • 東京農工大学農学部環境保護学科|(現)東京都下水道局芝浦水処理センター Department of Environmental Science & Conservation, Faculty of Agriculture, Tokyo University of Agriculture & Technology|(Present address) Shibaura Wastewater Treatment Center, Tokyo Metropolitan Government Sewage Bureau
    • 小川 浩史 OGAWA Hiroshi
    • 東京農工大学農学部環境保護学科|(現)東京大学海洋研究所 Department of Environmental Science & Conservation, Faculty of Agriculture, Tokyo University of Agriculture & Technology|(Present address) Ocean Research Institute, University of Tokyo
    • 小倉 紀雄 OGURA Norio
    • 東京農工大学農学部環境保護学科 Department of Environmental Science & Conservation, Faculty of Agriculture, Tokyo University of Agriculture & Technology

Abstract

The distributions of particulate amino acids (PAA) and other organic components : carbon (POC), nitrogen (PON) and chlorophyll pigments (chl. a) in the northwestern part of Tokyo Bay and Tamagawa Estuary were investigated in 1990. The particulate organic matter was fractionated to three size fractions of 0.3-1.2μm., 1.2-63μm and >63μm. The total concentrations of PAA in the three fractions ranged from 194μg•l<sup>-1</sup> to 3044μg•l<sup>-1</sup> and averaged 1218μg•l<sup>-1</sup>. The fraction of 1.2-63μm was a constantly predominant portion of PAA, which accounted for 69-76% of the total, as well as other particurate componets. The source of PAA could be estimated from a correlation observed between PAA and Chl. a concentrations in the fraction of 1.2-63μm. The percentages of PAA derived from phytoplankton origin were calculated to be 71±20% at the St. 8 in the estuary of Arakawa River, 61±23% at the St. 25 off Haneda and 95±4% at the St. 35 near the center of the bay. It was also found that sedimentary organic matter was characterized by high percentage of glycine and low ratio of PAA-C/POC compared to suspended particles directly generated from phytoplankton, indicating that these parameters might be useful to estimate the microbial decomposition process of particulate organic matter.

Journal

  • Chikyukagaku

    Chikyukagaku 28(1), 1-14, 1994

    The Geochemical Society of Japan

Codes

  • NII Article ID (NAID)
    110008679884
  • NII NACSIS-CAT ID (NCID)
    AN00141280
  • Text Lang
    JPN
  • ISSN
    0386-4073
  • NDL Article ID
    3875612
  • NDL Source Classification
    ZM41(科学技術--地球科学)
  • NDL Call No.
    Z15-645
  • Data Source
    NDL  NII-ELS  J-STAGE 
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