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Chemotactic Response of Marine Micro-Organisms to Micro-Scale Nutrient Layers
Published on: May 28, 2007
微生物バイオフィルムがメソコスム流の生態系プロセスに与える貢献
Tom J Battin1, Louis A Kaplan, J Denis Newbold
1Department of Limnology, IECB, University of Vienna, A-1090 Vienna, Austria. tomba@pflaphy.pph.univie.ac.at
Nature
|December 4, 2003
まとめ
川の微生物バイオフィルムは,物理的な生息地を大幅に変化させ,水分保持と粒子の捕獲を増加させます. これらのコミュニティは,栄養素の循環に不可欠であり,頭水の流れをより大きな水生生態系に接続します.
科学分野:
- 水生生態学 水生生態学とは
- 微生物生態学とは
- ジオモルフォロジー ジオモルフォロジー
背景:
- 水生生態系の微生物は,主にバイオフィルムに存在します.
- バイオフィルムは,エネルギーの流れと栄養素の循環に不可欠です.
- バイオフィルム構造,ダイナミクス,生態系機能の関連性は,依然として十分に理解されていない.
研究 の 目的:
- 微生物のバイオフィルムが物理的な微生物生息地や川の生態系プロセスにどのように影響するか調査する.
- バイオフィルムが,水力動力学的臨時貯蔵と粒子の保持に及ぼす影響を定量化するために.
- バイオフィルム構造と質量移転が,有機分子の処理にどのように影響するかを理解する.
主な方法:
- 微生物のバイオフィルムを研究するために30mの長さのストリームメソコスムを利用しました.
- 水力動力学的臨時貯蔵と懸浮粒子の保持における測定された変化.
- 生物利用度が異なる有機分子の吸収を分析した.
主要な成果:
- バイオフィルムの成長は,水力ダイナミック暫定貯蔵を300%増加させた.
- バイオフィルムの成長は, suspended particlesの保持を120%向上させました.
- バイオフィルムは,生物学的利用可能性が低い化合物を好むことにより,有機分子吸収のダウンストリームリンクを変化させた.
結論:
- 微生物のバイオフィルムは,流れの微生物生息地を大幅に変化させ,物理的な保持を強化し,生地化学的処理を変化させます.
- バイオフィルムは一時的な貯蔵の生きたゾーンとして機能し,水力ダイナミック保持と生化学的処理を組み合わせます.
- 河頭流におけるこれらのバイオフィルム媒介のプロセスは,より大きな河川,河口,海洋の生態系に影響を与える可能性があります.
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