海洋プランクトン. アギュラスの環の環境特性は,全海洋プランクトン輸送に影響する

Emilie Villar¹, Gregory K Farrant², Michael Follows³

¹Aix Marseille Université, CNRS, IGS UMR 7256, 13288 Marseille, France. villar@igs.cnrs-mrs.fr not@sb-roscoff.fr hingamp@igs.cnrs-mrs.fr iudicone@szn.it karsenti@embl.de cbowler@biologie.ens.fr.

Science (New York, N.Y.)

|May 23, 2015

まとめ

アギュラスの環は,インド太平洋から大西洋への海洋輸送中にプランクトンの多様性を変化させます. これらのリング内のユニークな条件は,プランクトンのコミュニティに影響を与え,その分散を制限します.

科学分野:

海洋学海洋学とは
マリン・バイオロジーマリン・バイオロジー
バイオジオケミストリーバイオジオケミストリー

背景:

アギュラスの環は,インド太平洋と大西洋の間の水循環の主要な経路である.
プランクトンを輸送し,海洋生態系に影響を与える役割は十分に理解されていません.

研究の目的:

プランクトンコミュニティの構造と多様性に対するアグルハスのリングの影響を,トランス・ベッシン輸送の際に調査する.
プランクトンに影響を与えるアグルハスの環内の生地化学的プロセスを理解するために.

主な方法:

若いアグルハスのリングを研究するために,in situ サンプリングと海洋学モデリングを使用しました.
プランクトンコミュニティの構成とリング内の窒素循環を分析した.

主要な成果:

プランクトンコミュニティは,インド洋のソース集団と比較して,南大西洋の多様性が変化したことを示しました.
リング内の強い垂直混合は,複雑な窒素循環につながった.
これらのプロセスは,西側の移動中にコミュニティの代謝と生地化学的サインを形作りました.

結論:

アギュラスのリングは,輸送中にプランクトンの多様性を大幅に変更します.
アギュラスの環の中のユニークな環境は,選択的なフィルターとして作用し,インド洋のプランクトンの大西洋への分散を潜在的に制限します.

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