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- Publisher
- Wiley
- Copyright
- Copyright © 2001 Wiley Subscription Services, Inc., A Wiley Company
- ISSN
- 0030-1299
- eISSN
- 1600-0706
- DOI
- 10.1034/j.1600-0706.2001.950106.x
- Publisher site
- See Article on Publisher Site
Abstract
The expansion of populations into new areas is dependent upon dispersal distances and the ability of colonists to find mates. These factors interact through the spatial distribution of individuals. We develop a mechanistic, spatially explicit model to investigate the interaction between dispersal distances and mate finding in expanding populations. At high dispersal distances and low mate finding abilities, population growth was constrained by the inverse density dependent inability of adults to find mates (an Allee effect). In contrast, at low dispersal distances and high mate finding abilities, growth was constrained by the density dependent inability of dispersers to find vacant territories. Population growth was highest in between these extremes. We suggest that these spatial interactions play an important role in the expansion of populations into new areas and that this methodology provides a useful tool for investigating them.
Journal
Oikos – Wiley
Published: Oct 1, 2001