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珊瑚礁受到快速气候变化和海洋酸化的影响
O Hoegh-Guldberg1, P J Mumby, A J Hooten
1Centre for Marine Studies, University of Queensland, St. Lucia, 4072 Queensland, Australia. oveh@uq.edu.au
Science (New York, N.Y.)
|December 15, 2007
概括
大气中二氧化碳的增加和海洋酸化威胁着珊瑚礁. 迫切需要采取全球行动,防止这些重要的海洋生态系统崩,并保护相关渔业和沿海社区.
科学领域:
- 海洋生物学 海洋生物学
- 气候科学 气候科学
- 生态生态学 生态生态学
背景情况:
- 大气中的二氧化碳水平预计将超过500 ppm,到2100年全球气温将上升至少2°C.
- 这些条件超过了过去4.20万年的情况,影响了海洋生物的进化.
- 海洋变暖和酸化威胁着珊瑚礁结构和生物多样性.
研究的目的:
- 在预计的气候变化下审查珊瑚礁的未来情景.
- 评估对珊瑚礁相关渔业,旅游业和海岸保护的影响.
- 强调需要管理干预和减少全球排放的必要性.
主要方法:
- 审查现有的科学文献和气候模型.
- 分析二氧化碳和温度增加对珊瑚生理和珊瑚礁积累的预期影响.
- 对礁石依赖系统的生态和社会经济后果的综合分析.
主要成果:
- 珊瑚礁面临着越来越少的稀有性和减少的多样性,由于碳酸盐积累受到损害.
- 珊瑚礁结构可能无法维护,导致功能崩.
- 气候变化加剧了当地的压力因素,如污染和过度捕捞.
结论:
- 未来的情景预测对珊瑚礁相关的渔业,旅游业和海岸保护造成严重后果.
- 珊瑚礁正接近功能崩的临界点.
- 立即扩大管理和对排放的果断全球行动对于避免生态系统损失至关重要.
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