Fortuna Miguel A, Bascompte Jordi
Ecol Lett. 2006 Mar;9(3):281-6. doi: 10.1111/j.1461-0248.2005.00868.x.
Recent papers have described the structure of plant-animal mutualistic networks. However, no study has yet explored the dynamical implications of network structure for the persistence of such mutualistic communities. Here, we develop a patch-model of a whole plant-animal community and explore its persistence. To assess the role of network structure, we build three versions of the model. In the first version, we use the exact network of interactions of two real mutualistic communities. In the other versions, we randomize the observed network of interactions using two different null models. We show that the community response to habitat loss is affected by network structure. Real communities start to decay sooner than random communities, but persist for higher destruction levels. There is a destruction threshold at which the community collapses. Our model is the first attempt to describe the dynamics of whole mutualistic metacommunities interacting in realistic ways.
近期的论文描述了植物 - 动物互利网络的结构。然而，尚无研究探讨网络结构对这类互利群落持久性的动态影响。在此，我们构建了一个完整植物 - 动物群落的斑块模型，并探究其持久性。为评估网络结构的作用，我们构建了该模型的三个版本。在第一个版本中，我们使用了两个真实互利群落的精确相互作用网络。在其他版本中，我们使用两种不同的空模型对观察到的相互作用网络进行随机化处理。我们表明，群落对栖息地丧失的响应受网络结构影响。真实群落比随机群落更早开始衰退，但在更高的破坏水平下仍能持续存在。存在一个破坏阈值，超过该阈值群落就会崩溃。我们的模型是首次尝试以现实方式描述整个互利集合群落的动态。
