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Sinking particles from 630,1430 and 3230m depths, suspended particles from 1,30,80 and 500m depths and bottom sediment were analyzed for hydrocarbons, which consisted of n-alkanes with the carbon atoms ranging from 14 to 32 (n-alkane, n-C_\u003c14\u003e-C_\u003c32\u003e), heneicosahexaene (n-C_\u003c21 : 6\u003e), isoprenoid hydrocarbons and branched C_\u003c25\u003e and cyclic C_\u003c30\u003e alkenes (br-C_\u003c25\u003e and c-C_\u003c30\u003e). Hydrocarbons were quantified by gas chromatography and identified and/or elucidated by combined gas chromatography and mass spectrometry. Isoprenoid hydrocarbons consisted of squalene, pristane and phytane, while branched C_\u003c25\u003e and C_\u003c30\u003e alkenes were composed of br-C_\u003c25 : 3\u003e, br-C_\u003c25 : 4\u003e, br-C_\u003c25 : 3\u0027\u003e (isomer of br-C_\u003c25 : 3\u003e), c-C_\u003c30 : 4 : 1\u003e and c-C_\u003c30 : 4 : 2\u003e. Hydrocarbon composition was characteristic to each of the particle and sediment samples. Thus, the hydrocarbon composition gives us a clue to clarify the source of organic matter in the sinking particles collected from the intermediate and deep waters. Heneicosahexaene widely occurring in diatoms and coccolithophores, was found in the suspended and sinking particles, indicating that organic matter in the sinking particles was derived from diatoms and/or coccolithophores living in the surface waters. br-C_\u003c25\u003e and C_\u003c30\u003e alkenes commonly found in the fecal pellets, were abundant in the sinking particles collected from the intermediate through deep waters. Thus, these findings indicate that large part of the organic materials in the sinking particles are derived from phytoplankton growing in the surface waters through fecal pellets of zooplankton. Occurrence of br-C_\u003c25\u003e and C_\u003c30\u003e alkenes even in the suspended particles of the euphotic layers indicates that these particles are contaminated by zooplankton fecal pellets and/or their debris. 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Source of organic matter in the sinking particles collected from the Pacific Sector of the Antarctic Ocean by sediment trap experiment
https://nipr.repo.nii.ac.jp/records/1907
https://nipr.repo.nii.ac.jp/records/19070f22776f-b823-4209-9080-93aed9327b27
名前 / ファイル | ライセンス | アクション |
---|---|---|
KJ00000013052.pdf (2.4 MB)
|
Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
---|---|---|---|---|---|---|
公開日 | 1986-02-01 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Source of organic matter in the sinking particles collected from the Pacific Sector of the Antarctic Ocean by sediment trap experiment | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | departmental bulletin paper | |||||
ページ属性 | ||||||
内容記述タイプ | Other | |||||
内容記述 | P(論文) | |||||
著者名(英) |
Matsueda, Hidekazu
× Matsueda, Hidekazu× Handa, Nobuhiko |
|||||
著者所属(英) | ||||||
en | ||||||
Water Research Institute, Nagoya University | ||||||
著者所属(英) | ||||||
en | ||||||
Water Research Institute, Nagoya University | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Sediment trap experiment was conducted at Stn. 3 (61°34.1′S, 150°23.3′E) in the Pacific Sector of the Antarctic Ocean for 23 days from December 20,1983 to January 13,1984. Sinking particles from 630,1430 and 3230m depths, suspended particles from 1,30,80 and 500m depths and bottom sediment were analyzed for hydrocarbons, which consisted of n-alkanes with the carbon atoms ranging from 14 to 32 (n-alkane, n-C_<14>-C_<32>), heneicosahexaene (n-C_<21 : 6>), isoprenoid hydrocarbons and branched C_<25> and cyclic C_<30> alkenes (br-C_<25> and c-C_<30>). Hydrocarbons were quantified by gas chromatography and identified and/or elucidated by combined gas chromatography and mass spectrometry. Isoprenoid hydrocarbons consisted of squalene, pristane and phytane, while branched C_<25> and C_<30> alkenes were composed of br-C_<25 : 3>, br-C_<25 : 4>, br-C_<25 : 3'> (isomer of br-C_<25 : 3>), c-C_<30 : 4 : 1> and c-C_<30 : 4 : 2>. Hydrocarbon composition was characteristic to each of the particle and sediment samples. Thus, the hydrocarbon composition gives us a clue to clarify the source of organic matter in the sinking particles collected from the intermediate and deep waters. Heneicosahexaene widely occurring in diatoms and coccolithophores, was found in the suspended and sinking particles, indicating that organic matter in the sinking particles was derived from diatoms and/or coccolithophores living in the surface waters. br-C_<25> and C_<30> alkenes commonly found in the fecal pellets, were abundant in the sinking particles collected from the intermediate through deep waters. Thus, these findings indicate that large part of the organic materials in the sinking particles are derived from phytoplankton growing in the surface waters through fecal pellets of zooplankton. Occurrence of br-C_<25> and C_<30> alkenes even in the suspended particles of the euphotic layers indicates that these particles are contaminated by zooplankton fecal pellets and/or their debris. Further discussions will be conducted on the source materials of the sinking particles on the basis of the hydrocarbon compositions of the suspended and sinking particles. | |||||
雑誌書誌ID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA00733561 | |||||
書誌情報 |
Memoirs of National Institute of Polar Research. Special issue 巻 40, p. 364-379, 発行日 1986-02 |