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Modelling dominance shifts of anchovy and sardine with a frame-based approach : sensitivity to the underlying sardine population dynamics
Includes bibliographical references.
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| Main Author: | |
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| Other Authors: | |
| Format: | Thesis |
| Language: | English |
| Published: |
Department of Oceanography
2014
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| _version_ | 1867611345699995648 |
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| access_status_str | Open Access |
| author | Botha, Jakobus Stephanus |
| author2 | Jarre, Astrid |
| author_browse | Botha, Jakobus Stephanus Jarre, Astrid |
| author_facet | Jarre, Astrid Botha, Jakobus Stephanus |
| author_sort | Botha, Jakobus Stephanus |
| collection | Thesis |
| description | Includes bibliographical references. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/10261 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2014 |
| publishDateRange | 2014 |
| publishDateSort | 2014 |
| publisher | Department of Oceanography |
| publisherStr | Department of Oceanography |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/10261 Modelling dominance shifts of anchovy and sardine with a frame-based approach : sensitivity to the underlying sardine population dynamics Botha, Jakobus Stephanus Jarre, Astrid Marine Research Includes bibliographical references. It has been shown that sardine and anchovy populations in the southern Benguela have alternated dominance during the past 50 years, and a frame based model that explores the usefulness of frames within a marine ecosystem by modelling sardine/anchovy dominance shifts in the southern Benguela has been developed in a previous study. The existing model contains a sardine population sub-model without age structure and the inclusion of age-structure allows age-related dynamics to be incorporated in the model design. In this mini-dissertation, an age-structured sardine population is implemented in the frame based model by using the sardine assessment model from the joint sardine/anchovy Operational Management Procedure, OMP-02. Methods for incorporating biological processes - such as the hypothesised school trap phenomena - that were present in the existing frame based model into the OMP-02 equations are developed, critically analysed and tested. 2014-12-27T14:17:04Z 2014-12-27T14:17:04Z 2012 Master Thesis Masters MSc http://hdl.handle.net/11427/10261 eng application/pdf Department of Oceanography Faculty of Science University of Cape Town |
| spellingShingle | Marine Research Botha, Jakobus Stephanus Modelling dominance shifts of anchovy and sardine with a frame-based approach : sensitivity to the underlying sardine population dynamics |
| thesis_degree_str | Master's |
| title | Modelling dominance shifts of anchovy and sardine with a frame-based approach : sensitivity to the underlying sardine population dynamics |
| title_full | Modelling dominance shifts of anchovy and sardine with a frame-based approach : sensitivity to the underlying sardine population dynamics |
| title_fullStr | Modelling dominance shifts of anchovy and sardine with a frame-based approach : sensitivity to the underlying sardine population dynamics |
| title_full_unstemmed | Modelling dominance shifts of anchovy and sardine with a frame-based approach : sensitivity to the underlying sardine population dynamics |
| title_short | Modelling dominance shifts of anchovy and sardine with a frame-based approach : sensitivity to the underlying sardine population dynamics |
| title_sort | modelling dominance shifts of anchovy and sardine with a frame based approach sensitivity to the underlying sardine population dynamics |
| topic | Marine Research |
| url | http://hdl.handle.net/11427/10261 |
| work_keys_str_mv | AT bothajakobusstephanus modellingdominanceshiftsofanchovyandsardinewithaframebasedapproachsensitivitytotheunderlyingsardinepopulationdynamics |