预测气候驱动的制度转变与珊瑚礁反弹潜力的预测
Nicholas A J Graham1, Simon Jennings2, M Aaron MacNeil3
1Australian Research Council Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, Queensland 4811 Australia.
Nature
|January 22, 2015
概括
珊瑚礁面临着气候变化带来的威胁. 这项研究表明,漂白后的珊瑚礁恢复取决于结构复杂性和低营养负载等因素,预测未来的珊瑚礁弹性.
科学领域:
- 海洋生物学 海洋生物学
- 生态生态学 生态生态学
- 气候变化科学 气候变化科学
背景情况:
- 气候引起的珊瑚漂白是全球珊瑚礁的主要威胁.
- 预测珊瑚礁在漂白后的恢复或转向藻类主导是具有挑战性的.
- 了解这些动态对于在气候变化下有效管理珊瑚礁至关重要.
研究的目的:
- 记录和预测长期的珊瑚礁对印度-太平洋地区重大珊瑚漂白事件的反应.
- 确定预测珊瑚礁是否恢复或转向藻类主导的因素.
- 评估在漂白事件后珊瑚礁鱼群体的变化.
主要方法:
- 在严重的漂白事件后监测21个印度-太平洋珊瑚礁.
- 分析珊瑚覆盖,藻类占主导地位和鱼群结构.
- 确定预测珊瑚礁轨迹的环境因素的值.
主要成果:
- 21个珊瑚礁中有12个恢复,而9个珊瑚礁在失去90%以上的活珊瑚覆盖后转向藻类主导.
- 珊瑚礁的恢复受到高结构复杂性,更深的水域,丰富的幼珊瑚和食草鱼以及低营养负载的支持.
- 鱼群结构反映了珊瑚礁在恢复的珊瑚礁上的恢复,但在藻类主导的珊瑚礁上有所分歧.
结论:
- 漂白后的珊瑚礁生态系统轨迹可以根据干扰前的条件进行预测.
- 结构复杂性和水深是珊瑚礁恢复与制度转变的关键预测因素.
- 调查结果为改善面临气候变化的珊瑚礁的管理和适应策略提供了指导.
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