极端和复合海洋事件是预计低鱼鱼生物质的关键驱动因素
Natacha Le Grix1,2, William L Cheung3, Gabriel Reygondeau3
1Climate and Environmental Physics, Physics Institute, University of Bern, Bern, Switzerland.
Global change biology
|October 10, 2023
概括
海洋生态系统面临海洋极端事件的严重影响. 低生产率,高温和低氧气是关键的驱动因素,通常在组合中起作用,特别是在热带地区.
科学领域:
- 海洋生态海洋生态学
- 气候科学 气候科学
- 海洋学 海洋学 海洋学
背景情况:
- 海洋极端事件,如海洋热浪,对海洋生态系统构成重大威胁.
- 了解这些影响的驱动因素对于预测和缓解策略至关重要.
- 生态系统风险源于海洋异常的危害,暴露,脆弱性和复合效应.
研究的目的:
- 确定对海底鱼类生物质造成严重影响的关键海洋生态系统驱动因素.
- 分析单个与复合海洋异常在驱动极端生物质损失中的作用.
- 研究中等和极端海洋条件对海洋生态系统的影响.
主要方法:
- 采用了一个集体气候影响建模方法.
- 结合了全球海洋鱼类模型与地球系统模型模拟.
- 对326种海底鱼类鱼类总生物质的评估影响.
主要成果:
- 低净初级生产率是海洋68%的低鱼类生物质的主要驱动因素.
- 高温和低氧是特定地区的重要驱动因素,如东方赤道太平洋.
- 复合事件,涉及中度或极端的海洋条件,是必要的严重生物质损失在大多数海洋地区.
结论:
- 极端和复合海洋事件在严重的海海洋生态系统影响中发挥着关键作用.
- 热带地区显示易受中度海洋异常的加剧.
- 有效的缓解需要了解海洋驱动因素和生态系统反应的复杂相互作用.
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