Demographics of a seasonal aggregation of white sharks at Seal Island, False Bay, South Africa

 

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dc.contributor.advisor Griffiths, Charles L en_ZA
dc.contributor.advisor Booth, Tony en_ZA
dc.contributor.advisor Kock, Alison en_ZA
dc.contributor.author Hewitt, Adrian Michael en_ZA
dc.date.accessioned 2014-11-05T03:56:12Z
dc.date.available 2014-11-05T03:56:12Z
dc.date.issued 2014 en_ZA
dc.identifier.citation Hewitt, A. 2014. Demographics of a seasonal aggregation of white sharks at Seal Island, False Bay, South Africa. University of Cape Town. en_ZA
dc.identifier.uri http://hdl.handle.net/11427/9196
dc.description Includes bibliographical references. en_ZA
dc.description.abstract White sharks (Carcharodon carcharias) are widely distributed, ecologically important marine apex predators that are considered to be vulnerable to extinction. Given their crucial roles in structuring marine ecosystems, their populations need to be effectively monitored. Photo-identification provides a standardised, non-lethal method of assessing the population dynamics of extant species and provides live-encounter mark-recapture and data that are essential for management and conversation. White sharks occur throughout South African coastal waters but their centre of abundance is the Western Cape, where large sharks predominate at aggregation sites like Seal Island, False Bay. This study documents inter- and intra-seasonal trends in mean sighting rates and sex ratios of white sharks at Seal Island, and provides mark-recapture data that are used to estimate proportions of "resident" and "transient" white sharks, their size-distribution and maturity composition. en_ZA
dc.language.iso eng en_ZA
dc.title Demographics of a seasonal aggregation of white sharks at Seal Island, False Bay, South Africa en_ZA
dc.type Master Thesis
uct.type.publication Research en_ZA
uct.type.resource Thesis en_ZA
dc.publisher.institution University of Cape Town
dc.publisher.faculty Faculty of Science en_ZA
dc.publisher.department Department of Biological Sciences en_ZA
dc.type.qualificationlevel Masters
dc.type.qualificationname MSc en_ZA
uct.type.filetype Text
uct.type.filetype Image
dc.identifier.apacitation Hewitt, A. M. (2014). <i>Demographics of a seasonal aggregation of white sharks at Seal Island, False Bay, South Africa</i>. (Thesis). University of Cape Town ,Faculty of Science ,Department of Biological Sciences. Retrieved from http://hdl.handle.net/11427/9196 en_ZA
dc.identifier.chicagocitation Hewitt, Adrian Michael. <i>"Demographics of a seasonal aggregation of white sharks at Seal Island, False Bay, South Africa."</i> Thesis., University of Cape Town ,Faculty of Science ,Department of Biological Sciences, 2014. http://hdl.handle.net/11427/9196 en_ZA
dc.identifier.vancouvercitation Hewitt AM. Demographics of a seasonal aggregation of white sharks at Seal Island, False Bay, South Africa. [Thesis]. University of Cape Town ,Faculty of Science ,Department of Biological Sciences, 2014 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/9196 en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Hewitt, Adrian Michael AB - White sharks (Carcharodon carcharias) are widely distributed, ecologically important marine apex predators that are considered to be vulnerable to extinction. Given their crucial roles in structuring marine ecosystems, their populations need to be effectively monitored. Photo-identification provides a standardised, non-lethal method of assessing the population dynamics of extant species and provides live-encounter mark-recapture and data that are essential for management and conversation. White sharks occur throughout South African coastal waters but their centre of abundance is the Western Cape, where large sharks predominate at aggregation sites like Seal Island, False Bay. This study documents inter- and intra-seasonal trends in mean sighting rates and sex ratios of white sharks at Seal Island, and provides mark-recapture data that are used to estimate proportions of "resident" and "transient" white sharks, their size-distribution and maturity composition. DA - 2014 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2014 T1 - Demographics of a seasonal aggregation of white sharks at Seal Island, False Bay, South Africa TI - Demographics of a seasonal aggregation of white sharks at Seal Island, False Bay, South Africa UR - http://hdl.handle.net/11427/9196 ER - en_ZA


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