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계산과학부

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세미나

Seminar
FIELD Computational Sciences
DATE December 01 (Tue), 2020
TIME 14:00-16:00
PLACE 7323
SPEAKER 박혜진
HOST Lee, Deok-Sun
INSTITUTE APCTP
TITLE Extinction dynamics from meta-stable coexistences in ecological systems
ABSTRACT Deterministic evolutionary dynamics can lead to stable coexistences of different types. Stochasticity, however, drives the loss of such coexistences. We investigate the most probable extinction trajectory by mapping a stochastic evolutionary model to a problem of classical mechanics using the Wentzel-Kramers-Brillouin (WKB) approximation. We consider competitive Lotka-Volterra type dynamics with coexisting two species. Our results show that more abundant types in a coexistence are not always likely to go extinct first. Instead, the distance between the coexistence and extinction point is a better predictor of extinction.
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