Abrupt population changes along smooth environmental gradients

Journal Article (Journal Article)

Populations often exhibit abrupt changes in abundance associated with a smooth, continuous change in some component of their environment, with the abruptness usually attributed to inter-specific interactions or physical extremes. This paper presents a spatially explicit single-species population model in which intra-specific interactions alone are responsible for such an abrupt change. The essential mechanism involves cooperation in both colonization (through enhanced recruitment near other individuals) and mortality (protection through a 'safety-in-numbers' interaction). Large fluctuations in population density would likely be observable near the transition region.

Full Text

Duke Authors

Cited Authors

  • Wilson, WG; Nisbet, RM; Ross, AH; Robles, C; Desharnais, RA

Published Date

  • January 1, 1996

Published In

Volume / Issue

  • 58 / 5

Start / End Page

  • 907 - 922

International Standard Serial Number (ISSN)

  • 0092-8240

Digital Object Identifier (DOI)

  • 10.1007/BF02459489

Citation Source

  • Scopus