Taitelbaum, A, West, R, Assaf, M et al. (1 more author) (2020) Population Dynamics in a Changing Environment: Random versus Periodic Switching. Physical Review Letters, 125 (4). 048105. ISSN 0031-9007
Abstract
Environmental changes greatly influence the evolution of populations. Here, we study the dynamics of a population of two strains, one growing slightly faster than the other, competing for resources in a time-varying binary environment modeled by a carrying capacity switching either randomly or periodically between states of abundance and scarcity. The population dynamics is characterized by demographic noise (birth and death events) coupled to a varying environment. We elucidate the similarities and differences of the evolution subject to a stochastically and periodically varying environment. Importantly, the population size distribution is generally found to be broader under intermediate and fast random switching than under periodic variations, which results in markedly different asymptotic behaviors between the fixation probability of random and periodic switching. We also determine the detailed conditions under which the fixation probability of the slow strain is maximal.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | This article is protected by copyright. All rights reserved. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | evolutionary dynamics; ecology and evolution; population dynamics; complex systems; fluctuations and noise; stochastic processes; nonequilibrium statistical mechanics; collective behavior; statistical physics; mathematical biology; interdisciplinary physics; nonlinear dynamics |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Mathematics (Leeds) > Applied Mathematics (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 29 Jun 2020 11:39 |
Last Modified: | 27 Jul 2020 11:03 |
Published Version: | https://journals.aps.org/prl/abstract/10.1103/Phys... |
Status: | Published |
Publisher: | American Physical Society |
Identification Number: | 10.1103/PhysRevLett.125.048105 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:162454 |