Causes and projections of abrupt climate-driven ecosystem shifts in the North Atlantic
Causes and projections of abrupt climate-driven ecosystem shifts in the North Atlantic
复制标题
DOI：
10.1111/j.1461-0248.2008.01218.x
复制
发表时间：
2008-11-01
期刊：
影响因子：
8.8
通讯作者：
Ibanez, Frederic
中科院分区：
文献类型：
--
作者：
Beaugrand, Gregory;Edwards, Martin;Ibanez, Frederic
全球气候变暖现在是明确的，它对地球功能单位的影响也变得更加明显。在这里，我们表明，海洋生态系统对气候变化并不同样敏感，并揭示了一个关键的热边界，温度的小幅上升会引发多个营养级的生态系统突然转变。这一大规模的边界位于北大西洋部门报告生态系统突然变化的区域，从而使我们能够通过全球共同现象将这些变化联系起来。我们表明，这些变化改变了生态系统的生物多样性和承载能力，并可能与捕鱼相结合，沉淀减少一些已经受到严重影响的大西洋鳕鱼种群。这些发现提供了一种预测主要生态系统变化的方法，并为鳕鱼等海洋开发资源提出适应性战略，以尽量减少社会和经济后果。
Warming of the global climate is now unequivocal and its impact on Earth' functional units has become more apparent. Here, we show that marine ecosystems are not equally sensitive to climate change and reveal a critical thermal boundary where a small increase in temperature triggers abrupt ecosystem shifts seen across multiple trophic levels. This large-scale boundary is located in regions where abrupt ecosystem shifts have been reported in the North Atlantic sector and thereby allows us to link these shifts by a global common phenomenon. We show that these changes alter the biodiversity and carrying capacity of ecosystems and may, combined with fishing, precipitate the reduction of some stocks of Atlantic cod already severely impacted by exploitation. These findings offer a way to anticipate major ecosystem changes and to propose adaptive strategies for marine exploited resources such as cod in order to minimize social and economic consequences.