Effects of Intraguild Predation on Resource Competition

✍ Scribed by TOMÁS REVILLA

• Book ID: 102613533
• Publisher: Elsevier Science
• Year: 2002
• Tongue: English
• Weight: 319 KB
• Volume: 214
• Category: Article
• ISSN: 0022-5193
• DOI: 10.1006/jtbi.2001.2448

✦ Synopsis

In this work, a simple Lotka}Volterra model of intraguild predation with three species is analysed, searching for the e!ect of the top predator on the coexistence with its preycompetitor species. Apart from the well-known result that the intraguild prey must be superior in the competition for the shared prey in order to make coexistence possible, the magnitude of intraguild predation and the form by which the intraguild predator makes use of the intraguild prey have important consequences upon the dynamics, extending or restricting the possibilities of coexistence. These results are easily obtained by nullcline analysis. Also, some interesting results are obtained for the same model but including saturating functional response.