Networks on Networks: The interplay of structure and dynamics in spatial ecological networks

网络上的网络：空间生态网络结构与动态的相互作用

• 批准号: 216501501
• 负责人: Professorin Dr. Barbara Drossel
• 金额: --
• 依托单位: Arbeitsgruppe Theorie komplexer Systeme
• 依托单位国家: 德国
• 项目类别: Research Units
• 财政年份: 2012
• 资助国家: 德国
• 起止时间: 2011-12-31 至 2019-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/216501501?language=en
• 关键词: Networks; interplay; structure; dynamics; spatial

Many complex networks are extended in space and have therefore two types of connections, namely local connections between network nodes and spatial connections between different locations. A typical example are ecological food webs in a heterogeneous environment. The network nodes represent ecological populations interacting through predation. In addition to this (non-spatial) food-web stucture, the species live on a spatial network, since they occupy habitats embedded in physical space, with the possibility to migrate between different habitats. Using food webs as example systems, we will investigate the structure and dynamics of such "networks on networks" and explore how the local trophic network structure, the structure of space, the distribution of species in space, and the population dynamics mutually influence each other Important goals of this study consist in characterizing the structure of such networks on networks, in obtaining the correct spatial scaling of the dynamical terms, in generating realistic networks on the computer, and in identifying criteria for the dynamical stability of such food webs and the persistence of species.

许多复杂网络在空间上扩展，因此具有两种类型的连接，即网络节点之间的局部连接和不同位置之间的空间连接。一个典型的例子是异质环境中的生态食物网。网络节点代表通过捕食相互作用的生态种群。除了这种（非空间的）食物网结构之外，物种还生活在一个空间网络上，因为它们占据了嵌入物理空间的栖息地，并有可能在不同的栖息地之间迁移。以食物网为例，我们将研究这种“网络上的网络”的结构和动力学，并探讨局部营养网络结构、空间结构、物种空间分布和种群动态如何相互影响。本研究的重要目标在于表征这种网络上的网络结构，获得动力学项的正确空间尺度，在计算机上生成真实的网络，并确定这些食物网的动态稳定性和物种持久性的标准。