The spruce budworm and forest: a qualitative comparison of ODE and Boolean models

Boolean and polynomial models of biological systems have emerged recently as viable companions to differential equations models. It is not immediately clear however whether such models are capable of capturing the multi-stable behaviour of certain biological systems: this behaviour is often sensitiv...

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Main Authors: Raina Robeva, David Murrugarra
Format: Article
Language:English
Published: Intercollegiate Biomathematics Alliance 2016-01-01
Series:Letters in Biomathematics
Subjects:
Online Access:http://dx.doi.org/10.1080/23737867.2016.1197804
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author Raina Robeva
David Murrugarra
author_facet Raina Robeva
David Murrugarra
author_sort Raina Robeva
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description Boolean and polynomial models of biological systems have emerged recently as viable companions to differential equations models. It is not immediately clear however whether such models are capable of capturing the multi-stable behaviour of certain biological systems: this behaviour is often sensitive to changes in the values of the model parameters, while Boolean and polynomial models are qualitative in nature. In the past few years, Boolean models of gene regulatory systems have been shown to capture multi-stability at the molecular level, confirming that such models can be used to obtain information about the system’s qualitative dynamics when precise information regarding its parameters may not be available. In this paper, we examine Boolean approximations of a classical ODE model of budworm outbreaks in a forest and show that these models exhibit a qualitative behaviour consistent with that derived from the ODE models. In particular, we demonstrate that these models can capture the bistable nature of insect population outbreaks, thus showing that Boolean models can be successfully utilized beyond the molecular level.
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spelling doaj.art-9307624924b9422391890cc4b164490e2022-12-22T03:30:20ZengIntercollegiate Biomathematics AllianceLetters in Biomathematics2373-78672016-01-0131759210.1080/23737867.2016.11978041197804The spruce budworm and forest: a qualitative comparison of ODE and Boolean modelsRaina Robeva0David Murrugarra1Randolph-Macon CollegeUniversity of KentuckyBoolean and polynomial models of biological systems have emerged recently as viable companions to differential equations models. It is not immediately clear however whether such models are capable of capturing the multi-stable behaviour of certain biological systems: this behaviour is often sensitive to changes in the values of the model parameters, while Boolean and polynomial models are qualitative in nature. In the past few years, Boolean models of gene regulatory systems have been shown to capture multi-stability at the molecular level, confirming that such models can be used to obtain information about the system’s qualitative dynamics when precise information regarding its parameters may not be available. In this paper, we examine Boolean approximations of a classical ODE model of budworm outbreaks in a forest and show that these models exhibit a qualitative behaviour consistent with that derived from the ODE models. In particular, we demonstrate that these models can capture the bistable nature of insect population outbreaks, thus showing that Boolean models can be successfully utilized beyond the molecular level.http://dx.doi.org/10.1080/23737867.2016.1197804Boolean networkdiscrete dynamical systembudworm-forest modelqualitative dynamicsbistability
spellingShingle Raina Robeva
David Murrugarra
The spruce budworm and forest: a qualitative comparison of ODE and Boolean models
Letters in Biomathematics
Boolean network
discrete dynamical system
budworm-forest model
qualitative dynamics
bistability
title The spruce budworm and forest: a qualitative comparison of ODE and Boolean models
title_full The spruce budworm and forest: a qualitative comparison of ODE and Boolean models
title_fullStr The spruce budworm and forest: a qualitative comparison of ODE and Boolean models
title_full_unstemmed The spruce budworm and forest: a qualitative comparison of ODE and Boolean models
title_short The spruce budworm and forest: a qualitative comparison of ODE and Boolean models
title_sort spruce budworm and forest a qualitative comparison of ode and boolean models
topic Boolean network
discrete dynamical system
budworm-forest model
qualitative dynamics
bistability
url http://dx.doi.org/10.1080/23737867.2016.1197804
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