| 来源类型 | Article |
| 规范类型 | 其他 |
| DOI | 10.1098/rspb.2014.2121 |
| Space race functional responses. | |
| Sjödin H; Brännström Å; Englund G | |
| 发表日期 | 2015 |
| 出处 | Proceedings of the Royal Society B: Biological Sciences 282 (1801): p. 20142121 |
| 出版年 | 2015 |
| 语种 | 英语 |
| 摘要 | We derive functional responses under the assumption that predators and prey are engaged in a space race in which prey avoid patches with many predators and predators avoid patches with few or no prey. The resulting functional response models have a simple structure and include functions describing how the emigration of prey and predators depend on interspecific densities. As such, they provide a link between dispersal behaviors and community dynamics. The derived functional response is general but is here modeled in accordance with empirically documented emigration responses. We find that the prey emigration response to predators has stabilizing effects similar to that of the DeAngelis-Beddington functional response, and that the predator emigration response to prey has destabilizing effects similar to that of the Holling type II response. A stabiliy criterion describing the net effect of the two emigration responses on a Lotka-Volterra predator-prey system is presented. The winner of the space race (i.e. whether predators or prey are favoured) is determined by the relationship between the slopes of the species- migration responses. It is predicted that predators win the space race in poor habitats, where predator and prey densities are low, and that prey are more successful in richer habitats. |
| 主题 | Evolution and Ecology (EEP) |
| 关键词 | community dynamics dispersal behaviors, functional response space race |
| URL | http://pure.iiasa.ac.at/id/eprint/11513/ |
| 来源智库 | International Institute for Applied Systems Analysis (Austria) |
| 引用统计 | |
| 资源类型 | 智库出版物 |
| 条目标识符 | http://119.78.100.153/handle/2XGU8XDN/130239 |
| 推荐引用方式 GB/T 7714 | Sjödin H,Brännström Å,Englund G. Space race functional responses.. 2015. |
| 条目包含的文件 | ||||||
| 文件名称/大小 | 资源类型 | 版本类型 | 开放类型 | 使用许可 | ||
| SjodinEtal2014_Space（270KB） | 智库出版物 | 限制开放 | CC BY-NC-SA | 浏览 | ||
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