| 来源类型 | Monograph (IIASA Interim Report) |
| 规范类型 | 报告 |
| Evolutionary branching in complex landscapes. | |
| Haller BC; Mazzucco R; Dieckmann U | |
| 发表日期 | 2013 |
| 出版者 | IIASA, Laxenburg, Austria: IR-13-035 |
| 出版年 | 2013 |
| 语种 | 英语 |
| 摘要 | Divergent adaptation to different environments can promote speciation, and it is thus important to consider spatial structure in models of speciation. Earlier theoretical work, however, has been limited to particularly simple types of spatial structure (linear environmental gradients and spatially discrete metapopulations), leaving unaddressed the effects of more realistic patterns of landscape heterogeneity, such as nonlinear gradients and spatially continuous patchiness. To elucidate the consequences of such complex landscapes, we adapt an established spatially explicit individual-based model of evolutionary branching. We show that branching is most probable at intermediate levels of various types of heterogeneity and that different types of heterogeneity have, to some extent, additive effects in promoting branching. In contrast to such additivity, we find a novel refugium effect in which refugia in hostile environments provide opportunities for colonization, thus increasing the probability of branching in patchy landscapes. Effects of patchiness depend on the scale of patches relative to dispersal. Providing a needed connection to empirical research on biodiversity and conservation policy, we introduce empirically accessible spatial environmental metrics that quantitatively predict a landscape's branching propensity. |
| 主题 | Evolution and Ecology (EEP) |
| 关键词 | Spatial environmental heterogeneity Local adaptation Individual-based model Negative frequency-dependent selection Ecological speciation Evolutionary refugia |
| URL | http://pure.iiasa.ac.at/id/eprint/10727/ |
| 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/125953 |
| 推荐引用方式 GB/T 7714 | Haller BC,Mazzucco R,Dieckmann U. Evolutionary branching in complex landscapes.. 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-13-035.pdf（2672KB） | 智库出版物 | 限制开放 | CC BY-NC-SA | 浏览 | ||
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