冷水サンゴのリン酸は,海水の栄養素化学の代理として使用されます
Paolo Montagna1, Malcolm McCulloch, Marco Taviani
1Istituto Centrale per la Ricerca Scientifica e Technologica Applicata al Mare (ICRAM), Via di Casalotti 300, 00166, Rome, Italy. p.montagna@icram.org
Science (New York, N.Y.)
|June 24, 2006
まとめ
Desmophyllum dianthusのような冷水サンゴは,その骨格で深海のリン酸レベルを記録しています. この新しいプロキシは,若いドライアス期間の地中海でリンが豊富な水域を明らかにしています.
科学分野:
- 海洋地質学 海洋地質学
- パレオセアノグラフィー
- バイオジオケミストリー バイオジオケミストリー
背景:
- リンは,生物質の輸出と再鉱化による深海に濃縮された重要なマクロ栄養素です.
- 過去の海洋状態を理解するには,信頼できるパレオプロキシが必要です.
研究 の 目的:
- 深海のリン酸濃度のプロキシとして,冷水サンゴの骨格の可能性を調査する.
- 生産性と深海の質量特性を含む過去の海洋学的条件を再構築する.
主な方法:
- 冷水サンゴデスマフィリウム・ダイアントス (Desmophyllum dianthus) の骨格のリン含有量の分析
- 珊瑚の濃度と周囲の海水の濃度とを相関させる.
- 地中海からの化石標本への代理の適用.
主要な成果:
- Desmophyllum dianthusの骨格のリン濃度は,周囲の海水のリンと正比しています.
- 珊瑚の骨格は,信頼できる古海洋学プロキシとして機能します.
- 化石のサンゴは,若いドライアスの終わりに地中海でを濃縮した底水を示しています.
結論:
- Desmophyllum dianthusの骨格のリン含有量は,過去の深海リン含有量の有効な代理です.
- このプロキシは,海洋の生産性と深水の質量特性の変化を推論するために使用することができます.
- 地中海におけるヤング・ドライアス時代は,底水の濃縮が顕著であった.
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