在经历气候变暖的沿海生态系统中量化共灭绝和生态系统服务脆弱性
Lexi N Wilkes1,2, Allison K Barner3, Aislyn A Keyes1,4
1Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, Colorado, USA.
Global change biology
|July 22, 2024
概括
气候变化威胁着生态系统和重要生态系统服务. 我们的研究表明,由于脆弱的关键物种丧失,服务在食物网之前崩,突出了间接的气候影响.
科学领域:
- 生态生态学 生态生态学
- 气候变化生物学 气候变化生物学
- 保护生物学 保护生物学
背景情况:
- 气候变化对生态系统和它们为人类提供的服务产生重大影响.
- 之前的研究往往忽视了气候变化对物种相互作用和生态系统稳定性的间接影响.
- 由于气候变化而导致的物种灭绝可能会引发连续的"共同灭绝",特别是在关键的食物网组成部分.
研究的目的:
- 开发一个分析气候变化脆弱性,食物网络角色和生态系统服务提供框架.
- 研究气候驱动的物种灭绝如何影响食物网的持久性和生态系统服务.
- 评估物种的气候脆弱性,生态作用和在岩石的潮间生态系统中提供服务的相互联系.
主要方法:
- 检查了八个经验性的岩石潮间食物网,以评估对气候驱动的灭绝的强度.
- 分析了物种对气候变化的脆弱性,它们在食物网中的连接性,以及它们在提供生态系统服务中的作用之间的关系.
- 模拟了物种丧失对食物网结构和生态系统服务供应的影响.
主要成果:
- 对于生态系统服务至关重要的物种更容易受到气候变化的影响,并且在食物网中更容易连接.
- 与整体食物网稳定性相比,生态系统服务提供在较低的物种丧失水平下崩.
- 高度连接的物种并不一定是最容易受到气候变化影响的.
结论:
- 食物网比它们支持的生态系统服务对气候变化的弹性更强.
- 整合物种的食物网角色,服务提供和气候脆弱性有助于预测共同灭绝的影响.
- 加强对物种相互作用网络和气候脆弱性的数据收集对于准确的生态预测至关重要.
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