| 来源类型 | Article |
| 规范类型 | 其他 |
| DOI | 10.1007/s10980-009-9386-0 |
| Intermediate landscape disturbance maximizes metapopulation density. | |
| Kun A; Oborny B; Dieckmann U | |
| 发表日期 | 2009 |
| 出处 | Landscape Ecology 24 (10): 1341-1350 |
| 出版年 | 2009 |
| 语种 | 英语 |
| 摘要 | The viability of metapopulations in fragmented landscapes has become a central theme in conservation biology. Landscape fragmentation is increasingly recognized as a dynamical process: in many situations, the quality of local habitats must be expected to undergo continual changes. Here we assess the implications of such recurrent local disturbances for the equilibrium density of metapopulations. Using a spatially explicit lattice model in which the considered metapopulation as well as the underlying landscape pattern change dynamically, we show that equilibrium metapopulation density is maximized at intermediate frequencies of local landscape disturbance. On both sides around this maximum, the metapopulation may go extinct. We show how the position and shape of the intermediate viability maximum is responding to changes in the landscape's overall habitat quality and the population's propensity for local extinction. We interpret our findings in terms of a dual effect of intensified landscape disturbances, which on the one hand exterminate local population and on the other hand enhance a metapopulation's capacity for spreading between habitat clusters. |
| 主题 | Evolution and Ecology (EEP) ; Postdoctoral Scholars (PDS) |
| 关键词 | Environmental heterogeneity Habitat fragmentation Percolation Dynamic landscapes Cellular automata |
| URL | http://pure.iiasa.ac.at/id/eprint/8818/ |
| 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/128958 |
| 推荐引用方式 GB/T 7714 | Kun A,Oborny B,Dieckmann U. Intermediate landscape disturbance maximizes metapopulation density.. 2009. |
| 条目包含的文件 | 条目无相关文件。 | |||||
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
