海洋酸性化が逆転すると,サンゴ礁の化が増加します
Rebecca Albright1, Lilian Caldeira1, Jessica Hosfelt2
1Department of Global Ecology, Carnegie Institution for Science, Stanford, California 94305, USA.
Nature
|February 25, 2016
まとめ
海洋酸性化は海洋のpH値を下げることで海洋生物に害を及ぼします 海洋化学を工業化以前のレベルに戻すことで サンゴ礁の化が加速し 現在の酸化が サンゴ礁の成長を阻害していることを示しています
科学分野:
- 海洋生物学
- 海洋学
- 気候科学
背景:
- 海洋は大気中のCO2を吸収し 海洋酸性化を引き起こします
- 海洋酸性化により pH,炭酸イオン濃度,ミネラル飽和度が低下する.
- 珊瑚のような海洋のカルシファーは これらの化学変化によって 脅かされています
研究 の 目的:
- サンゴ礁の塩分濃縮に対する純カルシフィケーション反応を定量化する.
- 海の酸性化が 珊瑚礁の成長に 影響を及ぼしているかどうかを 調べるためです
主な方法:
- 初の海水化学操作実験を 自然のサンゴ礁で実施しました
- 工業化以前の状態に戻すため 濃縮された性海水
主要な成果:
- 海の化学反応が回復すると コミュニティの石灰化が増加しました
- 工業化以前の状況と比較して, コミュニティの純カルシフィケーションの低下が観察されました.
結論:
- 海洋酸性化は 既にサンゴ礁の成長を阻害しているかもしれません
- サンゴ礁は 海洋のpH値と炭酸塩濃度の低下に脆弱です
- 海洋化学を再生することで サンゴ礁の化が促進されます
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