Unequal competitor ideal free distributions: predictions for differential effects of interference between habitats

Humphries, Stuart and Ruxton, Graeme D. and Van Der Meer, Jaap (2001) Unequal competitor ideal free distributions: predictions for differential effects of interference between habitats. Journal of Animal Ecology, 70 (6). pp. 1062-1069. ISSN 0021-8790

Full content URL: http://onlinelibrary.wiley.com/doi/10.1046/j.0021-...

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Unequal competitor ideal free distributions: predictions for differential effects of interference between habitats

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Abstract

1. Unequal competitor ideal free distribution (IFD) models that deal with the effects of interference allow for the relaxation of several unrealistic assumptions of the basic IFD model. We used the recently developed interaction-matrix method to examine the general case where the effect of interference can vary between patches, one previously unexplored in the literature. 2. An analytical approach revealed that mixed solutions are not possible for the case of differential interference between patches. However, simulations from an individual-based model suggest that, when numbers of individuals similar to those commonly used in empirical tests of the IFD are considered, mixed solutions are in fact predicted. 3. This discrepancy can only be detected by the use of individual-based models, and may help to explain the lack of certain previously predicted distributions in empirical tests of the theory. We suggest that future work should employ individual-based models to better link empirical tests with analytic theory.

Keywords:ideal free distribution, individual-based model, interference competition, Interference, interaction-matrix, unequal competitors
Subjects:C Biological Sciences > C180 Ecology
Divisions:College of Science > School of Life Sciences
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ID Code:15283
Deposited On:28 Nov 2014 12:53

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