Item type |
紀要論文(ELS) / Departmental Bulletin Paper(1) |
公開日 |
1984-08-01 |
タイトル |
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言語 |
en |
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タイトル |
15N abundance in the Dry Valley area, south Victoria Land, Antarctica: Eco-physiological implications of microorganisms |
言語 |
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言語 |
eng |
資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
departmental bulletin paper |
ページ属性 |
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内容記述タイプ |
Other |
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内容記述 |
P(論文) |
著者名(英) |
Wada, Eitarou
Imaizumi, Reiko
Nakaya, Shyu
Torii, Tetsuya
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著者所属(英) |
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en |
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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) |
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内容記述タイプ |
Other |
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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 |
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収録物識別子タイプ |
NCID |
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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
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