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Article: Interactions between predation risk and competition: a field study of kangaroo rats and snakes.
- Article from:
- Ecology
- Article date:
- January 1, 1995
- Author:
CopyrightCOPYRIGHT 1995 Ecological Society of America. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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INTRODUCTION
Most of the initial research on interactions between predation and competition has only considered the effects of predators on the number of prey (Holt 1977, Hastings 1978, Vance 1978, Glasser 1979). However, there is a growing interest in effects of predators on the behavior of prey species (Lima and Valone 1986, Schoener 1987). For example, predation risk may affect the time and duration of foraging or it may shift the activity of vulnerable prey species to safe microhabitats (e.g., Brown et al. 1988). Such behavioral effects on prey animals can explain species coexistence as an interaction of both predation and competition (Kotler and Holt 1989).
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