南洋における植物プランクトン開花の分布

C W Sullivan, K R Arrigo, C R McClain

Science (New York, N.Y.)

|December 17, 1993

まとめ

新しいアルゴリズムは,南極海の植物プランクトン染料濃度を正確に推定し,より高いレベルと,海流と栄養素の利用可能性に関連した非対称な分布を明らかにします.

科学分野:

海洋学海洋学とは
リモートセンシング (リモートセンサー)
バイオジオケミストリーバイオジオケミストリー

背景:

植物プランクトンの色素濃度は,海洋の生産性の重要な指標である.
南洋に関する以前の推定では,色素濃度が過小評価されていた可能性がある.
色の分布を理解することは,海洋生態系の研究において極めて重要です.

研究の目的:

南洋のNimbus-7沿岸ゾーンカラースキャナー (CZCS) データを用いて,地域の色素回収アルゴリズムを検証する.
新しい色素濃度の推定値と,in situ測定および以前の発見を比較する.
南極大陸周辺の植物プランクトン染料の空間的分布パターンを調査するために.

主な方法:

CZCS衛星データに地域性色素検索アルゴリズムの適用.
アルゴリズムによるピグメント濃度の比較と in situ 測定.
海洋学的な特徴に関連した色素分布パターンの分析.

主要な成果:

アルゴリズムの色素の推定値は,in situデータと (5%以内) 優れた一致を示しました.
推定されたピグメント濃度は,この地域において以前に報告された濃度の2倍以上であった.
強化された色素の明確な非対称的な分布が,対称的な地質学的性質とは異なり,南極周辺で観察されました.

結論:

検証されたアルゴリズムは,南洋の植物プランクトンバイオマスのより正確な評価を提供します.
観測された色素の非対称性は,環極流とシリシウム酸の利用可能性に関連しています.
鉄のような大陸からの微量元素は,特定の地域における強烈な植物プランクトン開花を助長する可能性がある.

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