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Individual species provide multifaceted contributions to the stability of ecosystems
Nature Ecology & Evolution ( IF 16.8 ) Pub Date : 2020-10-12 , DOI: 10.1038/s41559-020-01315-w
Lydia White , Nessa E. O’Connor , Qiang Yang , Mark C. Emmerson , Ian Donohue

Exploration of the relationship between species diversity and ecological stability has occupied a prominent place in ecological research for decades. Yet, a key component of this puzzle—the contributions of individual species to the overall stability of ecosystems—remains largely unknown. Here, we show that individual species simultaneously stabilize and destabilize ecosystems along different dimensions of stability, and also that their contributions to functional (biomass) and compositional stability are largely independent. By simulating experimentally the extinction of three consumer species (the limpet Patella, the periwinkle Littorina and the topshell Gibbula) from a coastal rocky shore, we found that the capacity to predict the combined contribution of species to stability from the sum of their individual contributions varied among stability dimensions. This implies that the nature of the diversity–stability relationship depends upon the dimension of stability under consideration, and may be additive, synergistic or antagonistic. We conclude that, although the profoundly multifaceted and context-dependent consequences of species loss pose a significant challenge, the predictability of cumulative species contributions to some dimensions of stability provide a way forward for ecologists trying to conserve ecosystems and manage their stability under global change.



中文翻译:

单个物种为生态系统的稳定性提供了多方面的贡献

几十年来,探索物种多样性与生态稳定性之间的关系一直在生态研究中占有重要地位。然而,这个难题的关键组成部分(单个物种对生态系统整体稳定性的贡献)仍然未知。在这里,我们表明单个物种同时沿着不同的稳定性维度稳定和破坏生态系统,而且它们对功能(生物量)和组成稳定性的贡献在很大程度上是独立的。通过模拟实验三个消费品种灭绝(帽贝髌骨,长春花和顶部壳体Gibbula)在沿海多岩石的海岸上,我们发现根据稳定性的各个方面来预测物种对稳定性的综合贡献的能力有所不同。这意味着多样性与稳定性关系的性质取决于所考虑的稳定性的维度,并且可能是累加的,协同的或对抗的。我们得出的结论是,尽管物种丧失的深刻多方面的后果和与环境有关的后果构成了重大挑战,但累积物种对稳定性某些方面的贡献的可预测性为生态学家在生态系统中试图保护生态系统和管理其在全球变化下的稳定性提供了一条前进的道路。

更新日期:2020-10-12
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