琵琶湖北湖におけるウログレナの優占的発生と水質, 気象要因等との関係 Relationships between the Dominant Occurrence of Uroglena americana and Water Quality and Meteorological Factors in the North Basin of Lake Biwa

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In the north basin of Lake Biwa, harmful dinoflagellate <i>Uroglena americana</i> occurred dominantly, causing bad-smelling tap water in late spring for several years. The relationships between the abundance of <i>U. americana</i> and water quality in the north basin and the meteorological conditions of Lake Biwa were examined. The changes of water quality in the north basin (Station A) of Lake Biwa in early May of 1980-1993 showed that the fluctuation of WT (water temperature), DIP (dissolved inorganic phosphorus), TN: TP (total nitrogen: total phosphorus), DIN:DIP (dissolved inorganic nitrogen: dissolved inorganic phosphorus), and TP:DIP ratios were remarkable. The comparison of each average water quality with regard to the dominant phytoplankton in early May of 1980-1993 showed that <i>U. americana</i> occurred in the waters with water qualities near the mean values, excepting comparatively high WT. The species also occurred in the years with meteorological conditions from mid April to early May close to the mean. These features of water quality and meteorological conditions suggested that the alga was a common species in early May and the control of the dominant occurrences resulted from abnormal water quality and meteorological conditions.

収録刊行物

  • 日本水産学会誌  

    日本水産学会誌 63(4), 594-599, 1997-07-15 

    日本水産學會

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各種コード

  • NII論文ID(NAID)
    10004851558
  • NII書誌ID(NCID)
    AN00193422
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    00215392
  • NDL 記事登録ID
    4258516
  • NDL 雑誌分類
    ZR26(科学技術--農林水産--水産)
  • NDL 請求記号
    Z18-345
  • データ提供元
    CJP書誌  CJP引用  NDL  IR  J-STAGE 
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