Joint Effects Of Distinct Biotic Interactions And Dispersal On A Multi-species Ecological System

One of the central questions in ecology is how do we maintain community stability and species coexistence mechanisms in a complex ecological community. It is thought that the interplay between mutualism, competition, predation and local dispersal support multi-species coexistence. In this thesis, we...

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Main Author:	Bello Aliyu, Murtala
Format:	Thesis
Language:	English
Published:	2021
Subjects:	QA1 Mathematics (General)
Online Access:	http://eprints.usm.my/53737/1/MURTALA%20BELLO%20ALIYU%20-%20TESIS24.pdf
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spelling	my-usm-ep.537372022-07-31T14:55:36Z Joint Effects Of Distinct Biotic Interactions And Dispersal On A Multi-species Ecological System 2021-10 Bello Aliyu, Murtala QA1 Mathematics (General) One of the central questions in ecology is how do we maintain community stability and species coexistence mechanisms in a complex ecological community. It is thought that the interplay between mutualism, competition, predation and local dispersal support multi-species coexistence. In this thesis, we re-formulate a four-species multiple interactions type (e.g., resource-competitor-exploiter-mutualist) system by incorporating a spatial diffusion term to model local dispersal process. We then employ this model to assess how the dynamics of dispersal, mutualism and competition shape species coexistence and community stability in this ecological system. Our findings show that the interplay of mutualism and competition affects the complexity of ecological dynamics in this multiple interactions type system with local dispersal. Using numerical simulation, we demonstrate how strong mutualism could stabilize the dynamics of this multi-species community. Employing bifurcation analysis, we also discover that mutualism essentially modifies this ecological community’s response to increasing competitive pressure on the resource species. These insights are evident in our findings through the emergence of intriguing dynamics and various bifurcations (e.g., subcritical and supercritical Hopfs, transcritical, saddle-node, transcritical-Hopf and homoclinic bifurcations). 2021-10 Thesis http://eprints.usm.my/53737/ http://eprints.usm.my/53737/1/MURTALA%20BELLO%20ALIYU%20-%20TESIS24.pdf application/pdf en public phd doctoral Universiti Sains Malaysia. Pusat Pengajian Sains Matematik
institution	Universiti Sains Malaysia
collection	USM Institutional Repository
language	English
topic	QA1 Mathematics (General)
spellingShingle	QA1 Mathematics (General) Bello Aliyu, Murtala Joint Effects Of Distinct Biotic Interactions And Dispersal On A Multi-species Ecological System
description	One of the central questions in ecology is how do we maintain community stability and species coexistence mechanisms in a complex ecological community. It is thought that the interplay between mutualism, competition, predation and local dispersal support multi-species coexistence. In this thesis, we re-formulate a four-species multiple interactions type (e.g., resource-competitor-exploiter-mutualist) system by incorporating a spatial diffusion term to model local dispersal process. We then employ this model to assess how the dynamics of dispersal, mutualism and competition shape species coexistence and community stability in this ecological system. Our findings show that the interplay of mutualism and competition affects the complexity of ecological dynamics in this multiple interactions type system with local dispersal. Using numerical simulation, we demonstrate how strong mutualism could stabilize the dynamics of this multi-species community. Employing bifurcation analysis, we also discover that mutualism essentially modifies this ecological community’s response to increasing competitive pressure on the resource species. These insights are evident in our findings through the emergence of intriguing dynamics and various bifurcations (e.g., subcritical and supercritical Hopfs, transcritical, saddle-node, transcritical-Hopf and homoclinic bifurcations).
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Bello Aliyu, Murtala
author_facet	Bello Aliyu, Murtala
author_sort	Bello Aliyu, Murtala
title	Joint Effects Of Distinct Biotic Interactions And Dispersal On A Multi-species Ecological System
title_short	Joint Effects Of Distinct Biotic Interactions And Dispersal On A Multi-species Ecological System
title_full	Joint Effects Of Distinct Biotic Interactions And Dispersal On A Multi-species Ecological System
title_fullStr	Joint Effects Of Distinct Biotic Interactions And Dispersal On A Multi-species Ecological System
title_full_unstemmed	Joint Effects Of Distinct Biotic Interactions And Dispersal On A Multi-species Ecological System
title_sort	joint effects of distinct biotic interactions and dispersal on a multi-species ecological system
granting_institution	Universiti Sains Malaysia.
granting_department	Pusat Pengajian Sains Matematik
publishDate	2021
url	http://eprints.usm.my/53737/1/MURTALA%20BELLO%20ALIYU%20-%20TESIS24.pdf
_version_	1747822256219750400

Joint Effects Of Distinct Biotic Interactions And Dispersal On A Multi-species Ecological System

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