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Geochemical characteristics of Antarctic lakes and ponds
https://doi.org/10.15094/00005161
https://doi.org/10.15094/00005161563c9250-b927-4d2b-9c2c-009aa2078775
名前 / ファイル | ライセンス | アクション |
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KJ00000036929 (2.9 MB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 1992-03-01 | |||||
タイトル | ||||||
タイトル | Geochemical characteristics of Antarctic lakes and ponds | |||||
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 | |||||
ID登録 | ||||||
ID登録 | 10.15094/00005161 | |||||
ID登録タイプ | JaLC | |||||
ページ属性 | ||||||
内容記述タイプ | Other | |||||
内容記述 | P(論文) | |||||
著者名(英) |
Matsumoto, Genki I.
× Matsumoto, Genki I.× Nakaya, Shyu× Murayama, Haruta× Masuda, Noriyasu× Kawano, Tamio× Watanuki, Kunihiko× Torii, Tetsuya |
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著者所属(英) | ||||||
en | ||||||
Department of Chemistry, College of Arts and Sciences, University of Tokyo/Department of Earth Sciences, Faculty of Sciences, Hirosaki University/Department of Chemistry, Faculty of Education, Yokohama National University/Iai Gakuen High School/Department of Chemistry, Faculty of Education, Oita University/Department of Chemistry, College of Arts and Sciences, University of Tokyo/ Japan Polar Research Association | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | General characteristics of lakes and ponds, distributions, changes and sources of major ionic components (Na, K, Mg, Ca, Cl and SO_4), nutrients and organic components in lake and pond waters and/or sediments of the McMurdo and Syowa Oases, Antarctica have been discussed from a geochemical viewpoint. Chloride ion contents of lake and pond waters range from 0 17 to 251100 mg/kg Total salt contents show bimodal distributions presumably reflecting the presence and absence of outflows, respectively. Generally, the relative abundances of Na, K, Ca, Mg and SO_4 decrease with increasing Cl contents, indicating that these ionic components deposit during concentration of dissolved salts in lakes and ponds through fractional freezing and/or evaporation of waters. Although contents of nitrate in the coastal lakes and ponds of the Syowa and Vestfold Oases are generally low, those in the oxic zones of the inland lakes and ponds of the McMurdo Oasis are often high Nitrite concentrations in freshwater and saline lakes and ponds are generally low Ammonium, phosphate and/or silicate released by the degradation of settled plankton are generally highly concentrated in the anoxic bottom layers of meromictic lakes because of the paucity of circulation. Total organic carbon or dissolved organic carbon contents in the anoxic layers of meromictic lakes are considerably high, and correlated with Cl contents. Organic matter and dissolved salts are concentrated in the bottom waters due to evaporation and/or freezing concentration of waters Long-chain n-alkanes and n-alkanoic acids (>C_<19>), and C_<29> sterols are often predominant components in lake and pond water and/or sediment samples in spite of the absence of vascular plants in the areas studied, and indicate that microorganisms are important sources of these compounds. As expected a series of phenolic acids relating to vascular plants are not detected in any Antarctic lake samples. | |||||
雑誌書誌ID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA10819561 | |||||
書誌情報 |
Proceedings of the NIPR Symposium on Polar Biology 巻 5, p. 125-145, 発行日 1992-03 |
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出版者 | ||||||
出版者 | National Institute of Polar Research |