Abrupt ecological shifts of lakes during the Anthropocene
Abrupt ecological shifts of lakes during the Anthropocene
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DOI：
10.1016/j.earscirev.2022.103981
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发表时间：
2022-03
影响因子：
12.1
通讯作者：
Shixin Huang;Ke Zhang;Q. Lin;Jianbao Liu;Ji Shen
中科院分区：
文献类型：
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作者：
Shixin Huang;Ke Zhang;Q. Lin;Jianbao Liu;Ji Shen
突然的生态变化已成为水生生态系统的普遍特征，并带来严重的社会生态后果。然而，目前还不确定这些变化是否在不同的湖泊之间同步发生，以及多个驱动因素如何在时间上相互作用，在全球范围内推动这些突然的变化。为了解决这一知识缺口，我们根据19世纪50年代至2010年代的综合古生态记录，对全球72个湖泊进行了荟萃分析。我们发现，全球湖泊的生态变化大多是异步的，但自20世纪50年代以来，频率异常增加。驾驶员反应的结果表明，在1950年代之前的突然转变是由气候变化主导的，而人为驱动因素和气候变化是负责大多数1950年代后的转变。网络分析进一步表明，多种压力源的相互作用更容易产生突变，全球气候变化是最常见的共同发生的驱动因素，强调需要全球协调一致的合作，以减轻人类世风险。我们的研究结果为从全球湖泊的角度描述人类世提供了新的见解和经验证据。
Abrupt ecological shifts have become a pervasive feature of aquatic ecosystems with severe socio-ecological consequences. Yet, it remains uncertain whether these shifts happened synchronously or not among various lakes, and how multiple drivers interacted through time to drive these abrupt changes on a global scale. To address this knowledge gap, here we conducted a meta-analysis of 72 lakes worldwide based on integrated paleoecological records ranging from the 1850s–2010s. We found ecological shifts were mostly asynchronous across global lakes, but with an exceptionally increasing frequency since the 1950s. Driver-response results showed that abrupt shifts before the 1950s were dominated by climate change, whereas both anthropogenic drivers and climate change were responsible for most post-1950s shifts. Network analysis further indicated that interactions of multiple stressors are more prone to produce abrupt shifts, and global climate change is the most frequent co-occurrence driver, underscoring the need for global coherent collaboration to mitigate Anthropocene risk. Our findings provide new insights and empirical evidence for characterizing the Anthropocene from a global lake perspective.