The use of stable isotope ratios of carbon and nitrogen to elucidate pelagic marine foodwebs of the Benguela and Agulhas Bank regions of South Africa

 

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dc.contributor.advisor Field, John G en_ZA
dc.contributor.advisor Van der Merwe, Nikolaas en_ZA
dc.contributor.author Sholto-Douglas, A D en_ZA
dc.date.accessioned 2016-02-29T12:06:21Z
dc.date.available 2016-02-29T12:06:21Z
dc.date.issued 1992 en_ZA
dc.identifier.citation Sholto-Douglas, A. 1992. The use of stable isotope ratios of carbon and nitrogen to elucidate pelagic marine foodwebs of the Benguela and Agulhas Bank regions of South Africa. University of Cape Town. en_ZA
dc.identifier.uri http://hdl.handle.net/11427/17370
dc.description Bibliography: pages 75-84. en_ZA
dc.description.abstract Isotope assessments of foodweb relationships amongst pelagic organisms may be influenced by their lipid content, since lipids are more depleted in ¹³C than other biochemical compounds. This is particularly important for plankton which show a greater decrease in δ¹³C caused by the failure to remove lipids during sample preparation, than the muscle tissue of pelagic fish species. Lipid removal is important for those fish species whose lipid content and magnitude of diet-consumer fractionation are simultaneously related to their size. The period required for pelagic fish to isotopically reflect a new diet is slow, of the order of months and years, and may depend on the diet and the magnitude of isotopic change displayed. It is likely that this rate decreases as the fish approach isotopic equilibrium with the new food source. en_ZA
dc.language.iso eng en_ZA
dc.subject.other zoology en_ZA
dc.title The use of stable isotope ratios of carbon and nitrogen to elucidate pelagic marine foodwebs of the Benguela and Agulhas Bank regions of South Africa en_ZA
dc.type Thesis / Dissertation en_ZA
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 en_ZA
dc.type.qualificationname MSc en_ZA
uct.type.filetype Text
uct.type.filetype Image


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