| 来源类型 | Monograph (IIASA Interim Report) |
| 规范类型 | 报告 |
| Consequesnces of asymmetric competition between resident and invasive defoliators: a novel empirically based modelling approach. | |
| Ammunet T; Klemola T; Parvinen K | |
| 发表日期 | 2014 |
| 出版者 | IIASA, Laxenburg, Austria: IR-14-022 |
| 出版年 | 2014 |
| 语种 | 英语 |
| 摘要 | Invasive species can have profound effects on a resident community via indirect interactions among community members. While long periodic cycles in population dynamics can make the experimental observation of the indirect effects difficult, modelling the possible effects on an evolutionary time scale may provide the much needed information on the potential threats of the invasive species on the ecosystem. Using empirical data from a recent invasion in northernmost Fennoscandia, we applied adaptive dynamics theory and modelled the long term consequences of the invasion by the winter moth into the resident community. Specifically, we investigated the outcome of the observed short-term asymmetric preferences of generalist predators and specialist parasitoids on the long term population dynamics of the invasive winter moth and resident autumnal moth sharing these natural enemies. Our results indicate that coexistence after the invasion is possible. However, the outcome of the indirect interaction on the population dynamics of the moth species was variable and the dynamics might not be persistent on an evolutionary time scale. In addition, the indirect interactions between the two moth species via shared natural enemies were able to cause asynchrony in the population cycles corresponding to field observations from previous sympatric outbreak areas. Therefore, the invasion may cause drastic changes in the resident community, for example by prolonging outbreak periods of birch-feeding moths, increasing the average population densities of the moths or, alternatively, leading to extinction of the resident moth species or to equilibrium densities of the two, formerly cyclic, herbivores. |
| 主题 | Evolution and Ecology (EEP) |
| 关键词 | Keywords: Adaptive dynamics, branching-extinction cycle, parasitism, population cycles, predation |
| URL | http://pure.iiasa.ac.at/id/eprint/11246/ |
| 来源智库 | International Institute for Applied Systems Analysis (Austria) |
| 资源类型 | 智库出版物 |
| 条目标识符 | http://119.78.100.153/handle/2XGU8XDN/125991 |
| 推荐引用方式 GB/T 7714 | Ammunet T,Klemola T,Parvinen K. Consequesnces of asymmetric competition between resident and invasive defoliators: a novel empirically based modelling approach.. 2014. |
| 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 | ||
| IR-14-022.pdf（799KB） | 智库出版物 | 限制开放 | CC BY-NC-SA | 浏览 | ||
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