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ics Joint Physics/Biology Colloquium
Friday, January 19, 2001
4:00 PM
Physics Building, Room 204
Note special time.
Alan McKane [Host: Tim Newman]
Department of Physics -University of Manchester, UK
"Ecological dynamics of multispecies communities"
Many theoretical physicists with a background in non-equilibrium statistical mechanics are becoming interested in exploring mathematical models of ecosystems. The reason for this is clear when one realizes that such models typically involve a large number of individuals interacting according to simple rules and that the ultimate aim is to compute coarse-grained or long-time behavior. The ingredients of these models include population dynamics, predator-prey interactions, competitive effects, speciation and immigration. Two examples will be discussed. One is a model which describes the evolution of food webs using adaptive dynamics and the other, a stochastic model of species-rich ecosystems which makes predictions concerning the form of the species abundance distribution.

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