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Influence of waterfalls on patterns of association between trout and Natal cascade frog Hadromophryne natalensis tadpoles in two headwaterstreams of the Ukhahlamba Drakensberg Park World Heritage Site

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dc.contributor.advisor Slater, Ken
dc.contributor.advisor Rivers-Moore, N. A. (Nicholas Andrew)
dc.contributor.author Karssing, Robert Jeffery
dc.date.accessioned 2011-09-28T08:27:23Z
dc.date.available 2011-09-28T08:27:23Z
dc.date.issued 2010-06
dc.identifier.uri http://hdl.handle.net/10500/4859
dc.description.abstract Current literature suggests that little, if any, research has been conducted in South Africa to determine the impact of alien invasive trout on indigenous amphibian biodiversity. The primary aim of the research project was to establish whether waterfalls are seasonally important in protecting the indigenous Natal Cascade Frog Hadromophryne natalensis tadpole populations from predation by alien rainbow trout Oncorhynchus mykiss and brown trout Salmo trutta at two sampling areas located at Injesuthi and Monk‟s Cowl Nature Reserve within the uKhahlamba Drakensberg Park World Heritage Site (UDPWHS). The dissertation argues in favour of a biotic rationale, namely trout predation, as being the primary cause for the decline of H. natalensis tadpoles below the waterfalls and systematically negates the influence of geo-physical (abiotic) environmental factors on tadpole abundance. Habitat isolation and fragmentation is identified as a latent threat to the continued persistence of H. natalensis populations in the UDPWHS. en
dc.language.iso en en
dc.subject Amphibian en
dc.subject Brown Trout Salmo trutta en
dc.subject Rainbow Trout Oncorhynchus mykiss en
dc.subject Alien en
dc.subject Invasive en
dc.subject Predation en
dc.subject Waterfall en
dc.subject Isolation en
dc.subject Fragmentation en
dc.subject.ddc 597.89096847
dc.subject.lcsh Frogs -- Behavior -- South Africa -- uKhalamba Drakensberg Park
dc.subject.lcsh Trout -- Behavior -- South Africa -- uKhalamba Drakensberg Park
dc.subject.lcsh Waterfalls -- South Africa -- uKhalamba Drakensberg Park
dc.title Influence of waterfalls on patterns of association between trout and Natal cascade frog Hadromophryne natalensis tadpoles in two headwaterstreams of the Ukhahlamba Drakensberg Park World Heritage Site en
dc.type Dissertation en
dc.description.department Environmental Sciences
dc.description.degree M. Sc. (Environmental Science)


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