Topology of plant-pollinator networks that are vulnerable to collapse from species extinction
Topology of plant-pollinator networks that are vulnerable to collapse from species extinction
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DOI：
10.1103/physreve.86.021924
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发表时间：
2012-08-31
影响因子：
2.4
通讯作者：
Albert, Reka
中科院分区：
文献类型：
--
作者：
Campbell, Colin;Yang, Suann;Albert, Reka
鉴于全球物种迅速灭绝的模式，预测生态群落崩溃的能力是一个重大问题。在这里，我们使用一个最近开发的动态布尔网络为基础的模型，互惠植物传粉者社区的形成，调查模拟生态社区的稳定性，面对连续的物种灭绝。我们评估社区的相对变化，在物种丧失后的生物多样性，并发现，社区经历了显着的生物多样性损失不同，从更强大的社区根据一些拓扑特征。值得注意的是，我们表明，高嵌套，财产通常被认为是促进社会稳定，可能在极端情况下，促进一个关键的过度依赖于个别物种。此外，对生态系统其他部分的生存重要的物种在网络中所占的位置与不太重要的物种不同。我们的研究结果表明，网络措施可能适用于真实的生态系统，以深入了解其稳定性和潜在的关键物种的身份。
The ability to predict the collapse of ecological communities is of significant concern in light of global patterns of rapid species extinctions. Here, we use a recently developed dynamic Boolean network-based model of mutualistic plant-pollinator community formation to investigate the stability of simulated ecological communities in the face of sequential species extinctions. We assess communities in terms of the relative change in biodiversity after species loss, and find that communities that experience a significant loss of biodiversity differ from more robust communities according to a number of topological characteristics. Notably, we show that high nestedness, a property commonly believed to promote community stability, may in extreme circumstances promote a critical over-reliance on individual species. Furthermore, the species important to the survival of the rest of the ecosystem occupy different positions in the network than less important species. Our results suggest that network measures may be applied to real ecosystems to yield insight into both their stability and the identity of potentially critical species.