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Linking foraging behaviour of post-breeding adult female elephant seals from Marion Island to physical dynamics and productivity at the South-West Indian Ridge
Advances in remote sensing and tagging technology have made it possible to investigate the relationship between oceanographic dynamics and the distribution of certain marine species. For this study, surface chlorophyII-a concentration was used as a proxy for underlying related productivity, rather t...
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| Format: | Thesis |
| Language: | English |
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Department of Oceanography
2014
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| _version_ | 1867613241715195904 |
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| access_status_str | Open Access |
| author | Biermann, Lauren |
| author_browse | Biermann, Lauren |
| author_facet | Biermann, Lauren |
| author_sort | Biermann, Lauren |
| collection | Thesis |
| description | Advances in remote sensing and tagging technology have made it possible to investigate the relationship between oceanographic dynamics and the distribution of certain marine species. For this study, surface chlorophyII-a concentration was used as a proxy for underlying related productivity, rather than as a direct indicator of prey density. Post-breeding, adult female southern elephant seals from Marion Island were tagged with conductivity, temperature and depth satellite-relayed data loggers (CTD-SRDL's) and their foraging behaviour was examined in relation to different chlorophyII-a concentrations. Optimal foraging and area restricted search theories predict that travelling speed and turning frequency would be quantifiably affected by prey density, which is in turn affected by the underlying richness of primary producers. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/10166 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:33:01.081Z |
| 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:11427/10166 Linking foraging behaviour of post-breeding adult female elephant seals from Marion Island to physical dynamics and productivity at the South-West Indian Ridge Biermann, Lauren Applied Marine Science Advances in remote sensing and tagging technology have made it possible to investigate the relationship between oceanographic dynamics and the distribution of certain marine species. For this study, surface chlorophyII-a concentration was used as a proxy for underlying related productivity, rather than as a direct indicator of prey density. Post-breeding, adult female southern elephant seals from Marion Island were tagged with conductivity, temperature and depth satellite-relayed data loggers (CTD-SRDL's) and their foraging behaviour was examined in relation to different chlorophyII-a concentrations. Optimal foraging and area restricted search theories predict that travelling speed and turning frequency would be quantifiably affected by prey density, which is in turn affected by the underlying richness of primary producers. 2014-12-26T14:25:26Z 2014-12-26T14:25:26Z 2011 Master Thesis Masters MSc http://hdl.handle.net/11427/10166 eng application/pdf Department of Oceanography Faculty of Science University of Cape Town |
| spellingShingle | Applied Marine Science Biermann, Lauren Linking foraging behaviour of post-breeding adult female elephant seals from Marion Island to physical dynamics and productivity at the South-West Indian Ridge |
| thesis_degree_str | Master's |
| title | Linking foraging behaviour of post-breeding adult female elephant seals from Marion Island to physical dynamics and productivity at the South-West Indian Ridge |
| title_full | Linking foraging behaviour of post-breeding adult female elephant seals from Marion Island to physical dynamics and productivity at the South-West Indian Ridge |
| title_fullStr | Linking foraging behaviour of post-breeding adult female elephant seals from Marion Island to physical dynamics and productivity at the South-West Indian Ridge |
| title_full_unstemmed | Linking foraging behaviour of post-breeding adult female elephant seals from Marion Island to physical dynamics and productivity at the South-West Indian Ridge |
| title_short | Linking foraging behaviour of post-breeding adult female elephant seals from Marion Island to physical dynamics and productivity at the South-West Indian Ridge |
| title_sort | linking foraging behaviour of post breeding adult female elephant seals from marion island to physical dynamics and productivity at the south west indian ridge |
| topic | Applied Marine Science |
| url | http://hdl.handle.net/11427/10166 |
| work_keys_str_mv | AT biermannlauren linkingforagingbehaviourofpostbreedingadultfemaleelephantsealsfrommarionislandtophysicaldynamicsandproductivityatthesouthwestindianridge |