Predator-prey interactions in natural communities. |
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| Authors: | D J Rapport |
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| Institution: | Department of Biological Sciences, Simon Fraser University, Burnaby, B.C., Canada;Department of Mathematics, McGill University, Montreal, Quebec, Canada |
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| Abstract: | The familiar concepts of harvest and yield are developed for the purpose of describing predator-prey interactions in a community context. In this regard the functional response (appropriate for one predator-one prey systems) is replaced by a community harvest function. Conditions for the stability of an ecological community are obtained. Exploring the dynamics of predator-prey interactions within this framework leads to new interpretations of other dynamical models such as the Lotka-Volterra model. The concept of a community moving attractor point is introduced in order to describe the changes in all populations over time. |
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