Local Extinctions, Habitat Fragmentation, and Ecotones

  • Gray Merriam
  • John Wegner
Part of the Ecological Studies book series (ECOLSTUD, volume 92)


In this chapter, extinctions are explored in the context of mechanisms that operate during and after habitat fragmentation of, and with frequent references to, woodlands in farmland, where we have studied the process, although information from many other situations are also used. An ecotone that is relevant to a particular species must be a gradient from more survivable to less survivable conditions. A high density of these circumstances should be conducive to observing the processes of local extinction. Fragmentation creates ecotones, expands them, and moves them. Therefore, from the information that we have about fragmentation effects, it may be possible to learn about the effects of changing ecotones on species extinctions.


Local Extinction Extinction Rate Metapopulation Model Woody Habitat Wooded Patch 
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© Springer-Verlag New York, Inc. 1992

Authors and Affiliations

  • Gray Merriam
  • John Wegner

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