Substrate dependant survivorship of Ecklonia maxima, in southern African kelp communities

 

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dc.contributor.advisor Anderson, Robert J en_ZA
dc.contributor.author West, Adam en_ZA
dc.date.accessioned 2017-10-27T14:13:01Z
dc.date.available 2017-10-27T14:13:01Z
dc.date.issued 1996 en_ZA
dc.identifier.citation West, A. 1996. Substrate dependant survivorship of Ecklonia maxima, in southern African kelp communities. University of Cape Town. en_ZA
dc.identifier.uri http://hdl.handle.net/11427/25867
dc.description.abstract Several south-western Cape Ecklonia maxima communities were examined to determine their basic demography and the effects of substrate selection. Overall percentage substrate composition, stipe lengths and substrate attachment for all kelps were recorded at four sites off the Cape Peninsula. Strength of attachment to different substrates was measured. Selection for substrate type was analysed using Jacobs' index. A substrate of Pyura stolonifera was the most common for juveniles, whereas substrates of rock and conspecific holdfasts were dominant in the larger individuals. No significant difference in strength of attachment was found for kelps less than 50 cm. An analysis of the frequency of single- and multi-stiped holdfasts indicates that survival on rock is greater than on that of holdfasts. Size-class distributions indicate that E. maxima is a shade-tolerant species showing advanced regeneration. Establishment on rock may occur through episodic recruitment escaping grazing pressure. In areas with low grazing intensity, recovery from catastrophic storms may be limited by competition with understorey algae. en_ZA
dc.language.iso eng en_ZA
dc.subject.other Botany en_ZA
dc.subject.other Marine Biology en_ZA
dc.title Substrate dependant survivorship of Ecklonia maxima, in southern African kelp communities en_ZA
dc.type Bachelor Thesis
dc.date.updated 2017-03-08T14:07:41Z
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 Honours
dc.type.qualificationname BSc (Hons) en_ZA
uct.type.filetype
uct.type.filetype Text
uct.type.filetype Image
dc.identifier.apacitation West, A. (1996). <i>Substrate dependant survivorship of Ecklonia maxima, in southern African kelp communities</i>. (Thesis). University of Cape Town ,Faculty of Science ,Department of Biological Sciences. Retrieved from http://hdl.handle.net/11427/25867 en_ZA
dc.identifier.chicagocitation West, Adam. <i>"Substrate dependant survivorship of Ecklonia maxima, in southern African kelp communities."</i> Thesis., University of Cape Town ,Faculty of Science ,Department of Biological Sciences, 1996. http://hdl.handle.net/11427/25867 en_ZA
dc.identifier.vancouvercitation West A. Substrate dependant survivorship of Ecklonia maxima, in southern African kelp communities. [Thesis]. University of Cape Town ,Faculty of Science ,Department of Biological Sciences, 1996 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/25867 en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - West, Adam AB - Several south-western Cape Ecklonia maxima communities were examined to determine their basic demography and the effects of substrate selection. Overall percentage substrate composition, stipe lengths and substrate attachment for all kelps were recorded at four sites off the Cape Peninsula. Strength of attachment to different substrates was measured. Selection for substrate type was analysed using Jacobs' index. A substrate of Pyura stolonifera was the most common for juveniles, whereas substrates of rock and conspecific holdfasts were dominant in the larger individuals. No significant difference in strength of attachment was found for kelps less than 50 cm. An analysis of the frequency of single- and multi-stiped holdfasts indicates that survival on rock is greater than on that of holdfasts. Size-class distributions indicate that E. maxima is a shade-tolerant species showing advanced regeneration. Establishment on rock may occur through episodic recruitment escaping grazing pressure. In areas with low grazing intensity, recovery from catastrophic storms may be limited by competition with understorey algae. DA - 1996 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 1996 T1 - Substrate dependant survivorship of Ecklonia maxima, in southern African kelp communities TI - Substrate dependant survivorship of Ecklonia maxima, in southern African kelp communities UR - http://hdl.handle.net/11427/25867 ER - en_ZA


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