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15N abundance in the Dry Valley area, south Victoria Land, Antarctica: Eco-physiological implications of microorganisms
https://nipr.repo.nii.ac.jp/records/1623
https://nipr.repo.nii.ac.jp/records/1623f4479d28-7fd4-4370-a2ba-a5127353fcc7
名前 / ファイル | ライセンス | アクション |
---|---|---|
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 1984-08-01 | |||||
タイトル | ||||||
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) |
Wada, Eitarou
× Wada, Eitarou× Imaizumi, Reiko× Nakaya, Shyu× Torii, Tetsuya |
|||||
著者所属(英) | ||||||
en | ||||||
Mitsubishi-Kasei Institute of Life Sciences/Mitsubishi-Kasei Institute of Life Sciences/Department of Earth Sciences, Hirosaki University/Chiba Institute of Technology | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Stable nitrogen isotope ratio in nitrogen-bearing substances from the Dry Valley area, south Victoria Land, was reported. The lowest δ^<15>N value of around -50‰ was found for the epibenthic algae collected from nitrate-rich saline ponds in the Labyrinth. In Lake Vanda, nitrate in its maximum layer (57-59m) was significantly rich in ^<15>N (10.3-13.4‰) as compared with the sedimentary organic nitrogen (-4.6‰). The variation of δ^<15>N seemed to probably result from nitrogen isotope fractionation associated with nitrate assimilation by algae. In the east lobe of Lake Bonney, the δ^<15>N value in nitrate increased with depth from 4.9 to 31.2‰. Dissolved N_2 gas in the west lobe exhibited the highest δ^<15>N value (1.5-2.5‰) among those observed in anoxic layers of various aquatic systems. The latter results from denitrification of nitrate with high δ^<15>N value at temperatures lower than 0℃. | |||||
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 32, p. 130-139, 発行日 1984-08 |