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Modelling frugivore-mediated seed dispersal
Thesis (MSc)--Stellenbosch University, 2017.
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| Format: | Thesis |
| Language: | en_ZA |
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Stellenbosch : Stellenbosch University
2017
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| _version_ | 1867613763484516352 |
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| access_status_str | Open Access |
| author | Mohammed, Mozzamil Mohammed Abdalla |
| author2 | Hui, Cang |
| author_browse | Hui, Cang Mohammed, Mozzamil Mohammed Abdalla |
| author_facet | Hui, Cang Mohammed, Mozzamil Mohammed Abdalla |
| author_sort | Mohammed, Mozzamil Mohammed Abdalla |
| collection | Thesis |
| dc_rights_str_mv | Stellenbosch University |
| description | Thesis (MSc)--Stellenbosch University, 2017. |
| format | Thesis |
| id | oai:scholar.sun.ac.za:10019.1/102647 |
| institution | Stellenbosch University (South Africa) |
| language | en_ZA |
| last_indexed | 2026-06-10T12:41:19.170Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from SUNScholar — Stellenbosch University Repository |
| publishDate | 2017 |
| publishDateRange | 2017 |
| publishDateSort | 2017 |
| publisher | Stellenbosch : Stellenbosch University |
| publisherStr | Stellenbosch : Stellenbosch University |
| record_format | dspace |
| source_str | SUNScholar — Stellenbosch University Repository |
| spelling | oai:scholar.sun.ac.za:10019.1/102647 Modelling frugivore-mediated seed dispersal Mohammed, Mozzamil Mohammed Abdalla Hui, Cang Landi, Pietro Stellenbosch University. Faculty of Science. Dept. of Mathematical Sciences. Division Mathematics. Fruit -- Seeds -- Dispersal Seed dispersal by animals Seeds -- Dispersal -- Mathematical models Ecology -- Mathematical models Thesis (MSc)--Stellenbosch University, 2017. ENGLISH ABSTRACT : Seed dispersal is the movement of seeds away from parent plants, and is a crucial ecological process for plant reproduction, persistence and spatial distribution. Specific interest in frugivorous seed-dispersal has increased due to its importance for plant temporal and spatial dynamics under global change. Empirical studies confirm that the interaction between fleshy-fruited plants and frugivores is mutualistic and can be fully beneficial for both partners provided that the dispersal cost is low. The animals benefit is quite obvious (food) while plants benefit is seed dispersal leading to reduced level of plant aggregation among other benefits. Based on pair-approximation method, we here propose a process-based mechanistic model of frugivorous seed-dispersal that captures the dynamics of the global and local densities of plants and the density of frugivores. The model considers three essential components of frugivorous seed-dispersal, including the strength of plant-frugivore mutualistic interaction, dispersal efficiency of frugivores and germination probability of seeds. Our theoretical findings agree with previous empirical studies that seed dispersal decreases plant intraspecific competitions by reducing the level of plant clustering. Results show that efficient frugivorous animals allow conditional persistence of plants with low fecundity and natural dispersal ability. Otherwise, inefficient animal seed-dispersers, with high dispersal risks, will act as seed predators, leading to global extinction of plants. Finally, results show the animals benefit (increased density equilibrium of animals) from plant-frugivore mutualistic interaction. Interestingly, our results provide broad theoretical evidence for the paramount importance of the existence of furgivore species in tropical forests. AFRIKAANSE OPSOMMING : Geen Afrikaanse opsomming geskikbaar nie 2017-11-15T13:25:20Z 2017-12-11T10:36:31Z 2018-12-28T03:00:08Z 2017-12 Thesis http://hdl.handle.net/10019.1/102647 en_ZA Stellenbosch University ix, 55 pages : illustrations (some colour) application/pdf application/pdf Stellenbosch : Stellenbosch University |
| spellingShingle | Fruit -- Seeds -- Dispersal Seed dispersal by animals Seeds -- Dispersal -- Mathematical models Ecology -- Mathematical models Mohammed, Mozzamil Mohammed Abdalla Modelling frugivore-mediated seed dispersal |
| title | Modelling frugivore-mediated seed dispersal |
| title_full | Modelling frugivore-mediated seed dispersal |
| title_fullStr | Modelling frugivore-mediated seed dispersal |
| title_full_unstemmed | Modelling frugivore-mediated seed dispersal |
| title_short | Modelling frugivore-mediated seed dispersal |
| title_sort | modelling frugivore mediated seed dispersal |
| topic | Fruit -- Seeds -- Dispersal Seed dispersal by animals Seeds -- Dispersal -- Mathematical models Ecology -- Mathematical models |
| url | http://hdl.handle.net/10019.1/102647 |
| work_keys_str_mv | AT mohammedmozzamilmohammedabdalla modellingfrugivoremediatedseeddispersal |