| 来源类型 | Book Section |
| DOI | 10.1017/CBO9780511542022.006 |
| Spatial dimensions of population viability. | |
| Gyllenberg M; Hanski I; Metz JAJ; Ferriere, R.; Dieckmann, U.; Couvet, D. | |
| 发表日期 | 2004 |
| 出处 | Evolutionary Conservation Biology. Eds. Ferriere, R. , Dieckmann, U. & Couvet, D. , Cambridge: Cambridge University Press. ISBN 0-521-82700-0 DOI: 10.1017/CBO9780511542022.006 . |
| 出版年 | 2004 |
| 语种 | 英语 |
| 摘要 | In most parts of the world, habitat loss is the number one threat to endangered species. For instance, in Finland the primary cause of threat is some form of habitat loss or alteration in 73% of the red-listed species (Rassi et al. 2001). Typically, a reduced total area of habitat is accompanied by habitat fragmentation, such that the remaining habitat occurs in smaller fragments with reduced connectivity. Many landscapes for many species have become highly fragmented (the habitat fragments are small or relatively small and physically completely isolated), while other landscapes have always been highly fragmented naturally. Species that live in such landscapes necessarily have fragmented populations, which more or less closely approach the metapopulation structure originally envisioned by Levins (1969). Levins' metapopulation is a system of local populations that inhabit individual habitat patches connected, to some extent, by migration. The classic metapopulation concept assumes that local populations may go extinct, and so leave the respective habitat patch temporarily unoccupied, while the metapopulation as a whole may persist in a balance between extinctions and colonizations (Levins 1969; Hanski and Gilpin 1997; Hanski 1999). In a broader sense, any assemblage of local populations connected by migration can be called a metapopulation, regardless of the occurrence of local extinctions (Hanski and Gilpin 1997). What is important is the spatially localized interactions of individuals, which may significantly change the dynamics of the metapopulation as a whole in comparison with a single panmictic population (Hanski 1999). |
| 主题 | Adaptive Dynamics Network (ADN) |
| URL | http://pure.iiasa.ac.at/id/eprint/7221/ |
| 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/133823 |
| 推荐引用方式 GB/T 7714 | Gyllenberg M,Hanski I,Metz JAJ,et al. Spatial dimensions of population viability.. 2004. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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