Access

You are not currently logged in.

Access JSTOR through your library or other institution:

login

Log in through your institution.

Journal Article

Mechanisms of Biological Invasions

R. Hengeveld
Journal of Biogeography
Vol. 15, No. 5/6 (Sep. - Nov., 1988), pp. 819-828
Published by: Wiley
DOI: 10.2307/2845342
Stable URL: http://www.jstor.org/stable/2845342
Page Count: 10
Were these topics helpful?
See something inaccurate? Let us know!

Select the topics that are inaccurate.

  • Download ($42.00)
  • Subscribe ($19.50)
  • Add to My Lists
  • Cite this Item
Mechanisms of Biological Invasions
Preview not available

Abstract

This paper considers two alternative hypotheses for explaining biological invasions. One hypothesis currently prevalent in ecology, is based on the assumption that a `balance of nature' exists and that biologically functional interactions dominate all other factors. An alternative hypothesis assumes that species are independent and respond individualistically to all factors, their individualism depending on species-specific responses relative to particular factors. The first hypothesis views community composition and external environmental factors as stable; invasions occur either when community resistance (`inertia') is overcomer, or when species change genetically so that they can colonize new climatic or biotic environments. The second hypothesis views community composition as flexible and external factors as dynamic. The first is often described using deterministic models, wherea the second emphasizes stochastic ones. After briefly surveying theories concerning the `balance of nature', I describe a stochastic model of range structure and extend it to invasions. This is illustrated by the invasion of the collared dove, Streptopelia decaocto (Friev.), into Europe.

Page Thumbnails

  • Thumbnail: Page 
819
    819
  • Thumbnail: Page 
820
    820
  • Thumbnail: Page 
821
    821
  • Thumbnail: Page 
822
    822
  • Thumbnail: Page 
[823]
    [823]
  • Thumbnail: Page 
824
    824
  • Thumbnail: Page 
825
    825
  • Thumbnail: Page 
826
    826
  • Thumbnail: Page 
827
    827
  • Thumbnail: Page 
828
    828
Part of Sustainability