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Colloquia
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"

ABSTRACT:
Many theoretical physicists with a background in nonequilibrium 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 coarsegrained or
longtime behavior. The ingredients of these models include population
dynamics, predatorprey 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 speciesrich ecosystems which makes predictions
concerning the form of the species abundance distribution. 



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