網走湖・サロマ湖の湖底堆積物から得られた珪藻遺骸群集 Diatom Assemblages from Lake Sediments of Lake Abashiri and Lake Saroma, Hokkaido, Northern Part of Japan

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著者

    • 鹿島 薫 Kashima Kaoru
    • 九州大学理学部地球惑星科学教室 Department of Earth and Planetary Sciences, Kyushu University

抄録

  Lake Abashiri and Lake Saroma are located along the coast of Ohotuku Sea, east part of Hokkaido, northern Japan. The salinity of lake water is approximately 5 permil at Lake Abashiri, and 30 permil at Lake Saroma. We took 23 samples of surface sediments and two bore hole samples from Lake Abashiri, and 26 samples of surface sediments and two bore hole samples from Lake Saroma for the analysis of diatom assemblages.  Cyclotella caspia, a planktonic diatom, is dominant at Lake Abashiri, and percentage of it among diatom valves from surface sediment is above 90% at most of sampling site. The diatom assemblages from bore hole samples show that Lake Abashiri was a fresh water lake, because Aulacoseira granulata, Aulacoseira ambigua and Stephanodiscus dubius, fresh water Planktonic diatoms, were dominant from the lower part of the bore hole samples. We got no dating data from the samples, yet.  Thalassiosira spp. And Thalassionema nitzschioides, planktonic diatoms, are dominant at central part of Lake Saroma. On the other hand, Cocconeis scutellum, a benthic diatom. Is dominan,t at the sites near the lake coast. The diatom assemblages and data of sedimentary ages (210Pb method) from bore hole samples show that the salinity of Lake Saroma had increased in 1929.

収録刊行物

  • Laguna : 汽水域研究

    Laguna : 汽水域研究 3, 33-39, 1996-03

    島根大学

被引用文献:  2件中 1-2件 を表示

各種コード

  • NII論文ID(NAID)
    110000557376
  • NII書誌ID(NCID)
    AN10439529
  • 本文言語コード
    JPN
  • 資料種別
    Departmental Bulletin Paper
  • 雑誌種別
    大学紀要
  • ISSN
    13403834
  • NDL 記事登録ID
    3994011
  • NDL 雑誌分類
    ZM44(科学技術--地球科学--海洋・陸水・火山)
  • NDL 請求記号
    Z15-B42
  • データ提供元
    CJP引用  NDL  NII-ELS  IR 
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