| 来源类型 | Monograph (IIASA Interim Report) |
| 规范类型 | 报告 |
| Abrupt community transitions and cyclic evolutionary dynamics in complex food webs. | |
| Takahashi D; Brannstrom Å; Mazzucco R; Yamauchi A; Dieckmann U | |
| 发表日期 | 2013 |
| 出版者 | IIASA, Laxenburg, Austria: IR-13-070 |
| 出版年 | 2013 |
| 语种 | 英语 |
| 摘要 | Understanding the emergence and maintenance of biodiversity ranks among the most fundamental challenges in evolutionary ecology. While processes of community assembly have frequently been analyzed from an ecological perspective, their evolutionary dimensions have so far received less attention. To elucidate the eco-evolutionary processes underlying the long-term build-up and potential collapse of community diversity, here we develop and examine an individual-based model describing coevolutionary dynamics driven by trophic interactions and interference competition, of a pair of quantitative traits determining predator and prey niches. Our results demonstrate the (1) emergence of communities with 30 multiple trophic levels, shown here for the first time for stochastic models with linear functional responses, and A(2) intermittent and cyclic evolutionary transitions between two alternative community states. In particular, our results indicate that the interplay of ecological and evolutionary dynamics often results in extinction cascades that remove the entire trophic level of consumers from a community. Finally, we show the (3) robustness of our results under variations of model assumptions, underscoring that processes of consumer collapse and subsequent rebound could be important elements of understanding biodiversity dynamics in natural communities. |
| 主题 | Evolution and Ecology (EEP) |
| 关键词 | individual-based model extinction cascade trophic-level evolution consumer collapse |
| URL | http://pure.iiasa.ac.at/id/eprint/10697/ |
| 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/125923 |
| 推荐引用方式 GB/T 7714 | Takahashi D,Brannstrom Å,Mazzucco R,et al. Abrupt community transitions and cyclic evolutionary dynamics in complex food webs.. 2013. |
| 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-13-070.pdf（7906KB） | 智库出版物 | 限制开放 | CC BY-NC-SA | 浏览 | ||
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