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American Zoologist 1987 27(2):249-258; doi:10.1093/icb/27.2.249
© 1987 by The Society for Integrative and Comparative Biology
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The Effect of Variability on the Optimal Size of a Feeding Territory1

JAMES N. MCNAIR
Department of Biological Sciences, Purdue University West Lafayette, Indiana 47907

Previous empirical and theoretical work has focused on how feeding territory size is governed by average levels of food availability and intrusion pressure; the potentially important effects of variability have not yet been studied in detail. Here I incorporate variation in food availability and intrusion pressure in some simple optimality models of territory size. The results show that the possible effects of variability are diverse, including both increase and decrease in territory size. And in some cases, variation in food availability produces qualitatively different effects than variation in intrusion pressure.


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