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Proc Biol Sci. 2000 January 22; 267(1439): 139–145.
PMCID: PMC1690516

Dispersal and extinction in fragmented landscapes.

Abstract

Evolutionary and population dynamics models suggest that the migration rate will affect the probability of survival in fragmented landscapes. Using data for butterfly species in the fragmented British landscape and in immediately adjoining areas of the European continent, this paper shows that species of intermediate mobility have declined most, followed by those of low mobility, whereas high-mobility species are generally surviving well. Compared to the more sedentary species, species of intermediate mobility require relatively large areas where they breed at slightly lower local densities. Intermediate mobility species have probably fared badly through a combination of metapopulation (extinction and colonization) dynamics and the mortality of migrating individuals which fail to find new habitats in fragmented landscapes. Habitat fragmentation is likely to result in the non-random extinction of populations and species characterized by different levels of dispersal, although the details are likely to depend on the taxa, habitats and regions considered.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.
  • Cowley MJR, Thomas CD, Thomas JA, Warren MS. Flight areas of British butterflies: assessing species status and decline. Proc Biol Sci. 1999 Aug 7;266(1428):1587–1587. [PMC free article]
  • Johst K, Brandl R. Evolution of dispersal: the importance of the temporal order of reproduction and dispersal. Proc Biol Sci. 1997 Jan 22;264(1378):23–30. [PMC free article]
  • Travis JMJ, Dytham C. The evolution of dispersal in a metapopulation: a spatially explicit, individual-based model. Proc Biol Sci. 1998 Jan 7;265(1390):17–23. [PMC free article]

Articles from Proceedings of the Royal Society B: Biological Sciences are provided here courtesy of The Royal Society