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Spatio-temporal dynamics in adaptive multispecies competitive communities
Thesis (MSc)--Stellenbosch University, 2018.
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| Format: | Thesis |
| Language: | en_ZA |
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Stellenbosch : Stellenbosch University
2019
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| _version_ | 1867613947312472064 |
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| access_status_str | Open Access |
| author | Langat, Gilbert Kiprotich |
| author2 | Hui, Cang |
| author_browse | Hui, Cang Langat, Gilbert Kiprotich |
| author_facet | Hui, Cang Langat, Gilbert Kiprotich |
| author_sort | Langat, Gilbert Kiprotich |
| collection | Thesis |
| dc_rights_str_mv | Stellenbosch University |
| description | Thesis (MSc)--Stellenbosch University, 2018. |
| format | Thesis |
| id | oai:scholar.sun.ac.za:10019.1/105619 |
| institution | Stellenbosch University (South Africa) |
| language | en_ZA |
| last_indexed | 2026-06-10T12:44:14.442Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from SUNScholar — Stellenbosch University Repository |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | Stellenbosch : Stellenbosch University |
| publisherStr | Stellenbosch : Stellenbosch University |
| record_format | dspace |
| source_str | SUNScholar — Stellenbosch University Repository |
| spelling | oai:scholar.sun.ac.za:10019.1/105619 Spatio-temporal dynamics in adaptive multispecies competitive communities Langat, Gilbert Kiprotich Hui, Cang Minoarivelo, Henintsoa Onivola Stellenbosch University. Faculty of Science. Dept. of Mathematical Sciences. Division Mathematics. Population biology -- Mathematical models Competition (Biology) Random matrices Adaptation (Biology) -- Mathematical models Lotka-Volterra competition model UCTD Thesis (MSc)--Stellenbosch University, 2018. ENGLISH ABSTRACT: An ecosystem is made up of a diverse range of species interacting with each other to form complex networks though suggested being unstable contrary to the naturally observed multispecies coexistence. To solve this paradox, species interaction switching and spatial flows have been postulated as among the factors shaping community structures and stability. Historically, these studies have considered only simple community models focussing on specific forms of interaction switching with little attention to the comparison of the different switching criteria. Using May’s ideology of applying random matrices theory, I attempt to understand the effect of community complexity in the presence of adaptation and species spatial flows in competitive ecosystems. Here, I use a modified Lotka-Volterra model in which species adaptively switch their interaction partner by either elimination of the unfit or survival of the fittest switching interchangeably in single communities and metacommunities. I showed that adaptive switching improves community productivity, nestedness, resilience, and diversity with increased complexity having a negative relation to productivity, resilience, and competitiveness. Species spatial movement further enhances stability and productivity. I argue that adaptive switching is an essential element of understanding the maintenance of community diversity in the presence of community complexity. AFRIKAANSE OPSOMMING: Geen opsomming beskikbaar. 2019-01-30T11:54:25Z 2019-04-17T08:05:04Z 2021-07-30T03:00:10Z 2018-12 Thesis http://hdl.handle.net/10019.1/105619 en_ZA Stellenbosch University ix, 60 pages : illustrations application/pdf Stellenbosch : Stellenbosch University |
| spellingShingle | Population biology -- Mathematical models Competition (Biology) Random matrices Adaptation (Biology) -- Mathematical models Lotka-Volterra competition model UCTD Langat, Gilbert Kiprotich Spatio-temporal dynamics in adaptive multispecies competitive communities |
| title | Spatio-temporal dynamics in adaptive multispecies competitive communities |
| title_full | Spatio-temporal dynamics in adaptive multispecies competitive communities |
| title_fullStr | Spatio-temporal dynamics in adaptive multispecies competitive communities |
| title_full_unstemmed | Spatio-temporal dynamics in adaptive multispecies competitive communities |
| title_short | Spatio-temporal dynamics in adaptive multispecies competitive communities |
| title_sort | spatio temporal dynamics in adaptive multispecies competitive communities |
| topic | Population biology -- Mathematical models Competition (Biology) Random matrices Adaptation (Biology) -- Mathematical models Lotka-Volterra competition model UCTD |
| url | http://hdl.handle.net/10019.1/105619 |
| work_keys_str_mv | AT langatgilbertkiprotich spatiotemporaldynamicsinadaptivemultispeciescompetitivecommunities |