Food-web complexity, meta-community complexity and community stability.
Food-web complexity, meta-community complexity and community stability.
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DOI：
10.1038/srep24478
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发表时间：
2016-04-13
影响因子：
4.6
通讯作者：
Kondoh M
中科院分区：
文献类型：
--
作者：
Mougi A;Kondoh M
自从理论上预测一个复杂的群落应该天生不稳定以来，是什么允许相互作用的不同物种在自然界共存一直是生态学的一个中心问题。虽然空间性在物种共存中的作用已经被认识到，但它在更复杂的系统中的应用还很少被探索。在这里，我们使用食物网的元社区模型，我们证明了元社区的复杂性，由当地食物网的数量和它们的连通性来衡量，引发了一种自我调节的负反馈机制，从而稳定了食物网的动态。此外，元群落复杂性的存在可以产生积极的食物网复杂性稳定效应。空间性在稳定复杂的真实食物网的动态方面可能发挥着比基于更简单的食物网模型的生态学理论所预期的更重要的作用。
What allows interacting, diverse species to coexist in nature has been a central question in ecology, ever since the theoretical prediction that a complex community should be inherently unstable. Although the role of spatiality in species coexistence has been recognized, its application to more complex systems has been less explored. Here, using a meta-community model of food web, we show that meta-community complexity, measured by the number of local food webs and their connectedness, elicits a self-regulating, negative-feedback mechanism and thus stabilizes food-web dynamics. Moreover, the presence of meta-community complexity can give rise to a positive food-web complexity-stability effect. Spatiality may play a more important role in stabilizing dynamics of complex, real food webs than expected from ecological theory based on the models of simpler food webs.