漂白されたサンゴのヘテロトロフ性可塑性と回復力
Andréa G Grottoli1, Lisa J Rodrigues, James E Palardy
1Department of Geological Sciences, Ohio State University, Columbus, Ohio 43210, USA. grottoli.1@osu.edu
Nature
|April 28, 2006
まとめ
漂白に対するサンゴの回復力は,宿主に依存しています.
科学分野:
- マリン・バイオロジー マリン・バイオロジー
- サンゴ礁の生態学 サンゴ礁の生態学
- 気候変動の影響 気候変動の影響
背景:
- 海洋温度の上昇によって引き起こされる大量珊瑚白化現象は,世界的に珊瑚の死亡率を大幅に引き起こす原因となっている.
- 地球温暖化による漂白現象の頻度と重度の増加は,サンゴ礁の生態系を脅かしています.
- 漂白後のサンゴの回復力と回復のメカニズムは完全に理解されていません.
研究 の 目的:
- 漂白からの回復と回復におけるサンゴの宿主の役割を調査する.
- 漂白イベント後の異なるサンゴ種の代謝反応を比較する.
主な方法:
- 漂白されたサンゴと回復しているサンゴの種 (Montipora capitata, Porites compressa, Porites lobata) の餌率と炭素吸収 (CHAR) を評価した.
- 日々の代謝エネルギー需要を満たすヘテロトロフ的栄養の貢献を定量化しました.
主要な成果:
- モンティポラ・キャピタタ (Montipora capitata) は,回復中に増えた栄養とCHARによって,日々の代謝エネルギー需要の100%以上を満たしました.
- Porites compressaとPorites lobataは,餌とCHAR.の同様の増加を示さなかった.
- CHAR能力が高いサンゴ種は,より高い回復力を示した.
結論:
- 栄養と炭素吸収を増加させるサンゴの宿主の能力は,漂白の回復と回復に不可欠です.
- CHAR能力が高い種は,将来の漂白イベントに対してより回復力がある可能性が高い.
- これらの回復力のあるサンゴの種は,支配的になり,サンゴ礁を絶滅から保護するのに役立ちます.
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