諏訪湖における藍藻の現存量・種組成変化に及ぼす滞留時間の影響

• 中村 剛也

  信州大学理学部物質循環学科

• 本間 隆満

  茨城県霞ケ浦環境科学センター

• 宮原 裕一

  信州大学山岳科学総合研究所山地水環境教育研究センター

• 花里 孝幸

  信州大学山岳科学総合研究所山地水環境教育研究センター

• 朴 虎東

  信州大学理学部物質循環学科

書誌事項

タイトル別名

• Effects of Retention Time on Biomass and Species Composition of Blue-Green Algae in Lake Suwa

抄録

We carried out research in Lake Suwa from 2004 to 2008 to study how retention time affects the biomass and species composition of blue-green algae. The retention time of the lake ranged from 2.3 (rainy season in July 2006) to 120 (dry season in June 2005) days. Microcystis was predominant in summer, but Aphanizomenon was predominant in 2005 and 2006. Owing to nitrogen deficiency, the Microcystis population increase was suppressed when retention time was kept at more than 80 days. The increase in the population of Aphanizomenon flos-aquae was suppressed probably owing to the dilution and discharge of cells by precipitation, and the change of the predominant species caused by nutrient inflow. In this paper, we suggest an appropriate retention time for respective blue-green algae on the basis of changes in the predominant species caused by changes in retention time.

収録刊行物

• 水環境学会誌

  水環境学会誌 33 (9), 123-129, 2010

  公益社団法人 日本水環境学会

キーワード

• Change of species composition
• <I>Microcystis</I>
• <I>Aphanizomenon flos-aquae</I>
• Retention time
• Lake Suwa

詳細情報

• CRID: 1390001205081310976
• NII論文ID: 130000339254
• DOI: 10.2965/jswe.33.123
• ISSN: 18813690
• ISSN: 09168958
• Web Site: https://www.jstage.jst.go.jp/article/jswe/33/9/33_9_123/_pdf
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可