| 来源类型 | Article
|
| 规范类型 | 其他
|
| A dynamical system for neighborhoods in plant communities. |
| Law R; Dieckmann U
|
| 发表日期 | 2000
|
| 出处 | Ecology 81 (8): 2137-2148.
|
| 出版年 | 2000
|
| 语种 | 英语
|
| 摘要 | How should plant ecologists scale up from the fine-scale events affecting individual plants in small neighborhoods to the coarse-scale dynamics of plant communities? We give here a dynamical system, derived from an individual-based model, that captures the main effects of spatial structure. The individual-based model describes a multispecies plant community, living in a spatial domain, containing plants that (1) reproduce and die with rates that depend on other individuals in a specified neighborhood, and (2) move through seed dispersal and clonal growth. Over the course of time, substantial spatial structure can build up in such a community due to local interactions and dispersal. The dynamical system describes how the structure of local neighborhoods changes over time, using the first and second spatial moments of the individual-based model. We show, by means of an example of two competing species, that the dynamical system gives a close approximation to the behavior of the underlying individual- based model, and that the changes in local spatial structure as time progresses have fundamental effects on the dynamics. |
| 主题 | Adaptive Dynamics Network (ADN)
|
| 关键词 | Community dynamics
Competition
Competitive exclusion
Dispersal
Dynamical systems
Individual-based models
Moment dynamics
Plant's-eye view
Reproduction
Seed dispersal
Spatial ecology
Stochastic processes.
|
| URL | http://pure.iiasa.ac.at/id/eprint/5954/
|
| 来源智库 | International Institute for Applied Systems Analysis (Austria)
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| 资源类型 | 智库出版物
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| 条目标识符 | http://119.78.100.153/handle/2XGU8XDN/127879
|
推荐引用方式
GB/T 7714 |
Law R,Dieckmann U. A dynamical system for neighborhoods in plant communities.. 2000.
|
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