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Aggregation and the `Ideal Free' Distribution

William J. Sutherland
Journal of Animal Ecology
Vol. 52, No. 3 (Oct., 1983), pp. 821-828
DOI: 10.2307/4456
Stable URL: http://www.jstor.org/stable/4456
Page Count: 8
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Aggregation and the `Ideal Free' Distribution
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Abstract

(1) According to the `ideal free' distribution, predators should distribute themselves so each obtains the same food intake. Using this as a basis, a model is developed which incorporates interference and the disc equation to describe the aggregation of predators. It predicts that they should be distributed so that: the proportion of predators in a site = constant X proportion of prey in that site1/m, where m measures the strength of interference. (2) This model predicts the level of spatial density dependence and simplifies the analysis of population stability.

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