Quantifying the evidence for ecological synergies
Quantifying the evidence for ecological synergies
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DOI：
10.1111/j.1461-0248.2008.01243.x
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发表时间：
2008-12-01
期刊：
影响因子：
8.8
通讯作者：
Cote, Isabelle M.
中科院分区：
文献类型：
--
作者：
Darling, Emily S.;Cote, Isabelle M.
人们越来越担心，生态变化的多个驱动因素将协同作用，加速生物多样性的丧失。然而，这些相互作用的普遍性和大小仍然是预测未来生态变化的最大不确定性之一。我们通过对112个已发表的因子实验进行荟萃分析来解决这种不确定性，这些实验评估了多种应激源对淡水、海洋和陆地社区动物死亡率的影响。我们发现，平均而言，两种压力源的联合作用导致的死亡率不是协同作用的，这一结果在调查不同压力源、研究有机体和生活史阶段的研究中是一致的。此外，只有三分之一的相关实验显示出真正的协同效应，这并不支持协同效应猖獗的主流生态范式。然而，在超过四分之三的相关实验中，多个应激源相互作用的结果是非相加的(即协同或拮抗)，这表明生态惊喜可能比简单的相加效应更常见。
There is increasing concern that multiple drivers of ecological change will interact synergistically to accelerate biodiversity loss. However, the prevalence and magnitude of these interactions remain one of the largest uncertainties in projections of future ecological change. We address this uncertainty by performing a meta-analysis of 112 published factorial experiments that evaluated the impacts of multiple stressors on animal mortality in freshwater, marine and terrestrial communities. We found that, on average, mortalities from the combined action of two stressors were not synergistic and this result was consistent across studies investigating different stressors, study organisms and life-history stages. Furthermore, only one-third of relevant experiments displayed truly synergistic effects, which does not support the prevailing ecological paradigm that synergies are rampant. However, in more than three-quarters of relevant experiments, the outcome of multiple stressor interactions was non-additive (i.e. synergies or antagonisms), suggesting that ecological surprises may be more common than simple additive effects.