富栄養湖におけるユスリカ成虫大発生のメカニズムとその防除対策 Mechanism of Massive Flights of Chironomid Midges (Diptera) and Plans for their Control in a Hyper-eutrophic Lake.

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著者

    • 平林 公男 HIRABAYASHI Kimio
    • 信州大学繊維学部応用生物科学科 Department of Applied Biology, Faculty of Textile Science and Technology, Shinshu University

抄録

Chironomid midges emerging from eutrophic lakes have become intolerable because their high densities are a severe nuisance and cause economic problems. In this paper, we gave an outline of changes in the surrounding environment of chironomids in recent years and we examined the countermeasure for their control in Lake Suwa. Recent factors underlying the increasingly massive flights of midges from Lake Suwa to human living spaces were 1) humans invading the habitats of chironomid, causing human living space and those habitats to overlap (an increase in the intensity and number of lights around the lake drew many chironomid midges to human construction). 2) the progressive eutrophication of the lake provided chironomid larvae with a steady food supply so that the chironomid population density was maintained and stabilized. 3) fishes, which were the main predator of chironomid larvae, have decreased because the structure of the littoral zone was largely changed by human activity which destroyed their reproductive habitats. Basically, the control measures for chironomids in natural lakes were aimed mainly at stabilization of the lake ecosystem for the improvement of lake water quality and restoration of the littoral zone. A plan which effectively promotes the ideal of human coexistence with the organisms as auxiliary measures must be examined.

収録刊行物

  • 水環境学会誌 = Journal of Japan Society on Water Environment  

    水環境学会誌 = Journal of Japan Society on Water Environment 22(5), 359-364, 1999-05 

    公益社団法人 日本水環境学会

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各種コード

  • NII論文ID(NAID)
    10004452265
  • NII書誌ID(NCID)
    AN10372439
  • 本文言語コード
    JPN
  • 資料種別
    REV
  • ISSN
    09168958
  • NDL 記事登録ID
    4728792
  • NDL 雑誌分類
    ZN5(科学技術--建設工学・建設業--都市工学・衛生工学)
  • NDL 請求記号
    Z16-1045
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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