Browsing by Author "van der Merwe, E."

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    Heydrichia cerasina sp. nov. (Sporolithales, Corallinophycidae, Rhodophyta) from the southernmost tip of Africa. Phycologia, 51(1): 11- 21
    (International Phycological Society, 2012) Maneveldt, Gavin; van der Merwe, E.
    A new species of Heydrichia (Sporolithales), H. cerasina sp. nov., is described, found only on pebbles in the low intertidal zone along a 10 km stretch of the South African south coast from Cape Agulhas to Struisbaai. The species is characterized by the following suite of features that distinguish it from the other two species of Heydrichia found in South Africa: 1) unusual cherry-red colour when freshly collected; 2) uniformly warty growth from; 3) relatively thin crust (to 1400 µm thick); 4) tetra/bisporangial sori comprised of mostly single sporangial chambers; and 5) unbranched spermatangial structures distributed on the floor, walls and roof of the mature male conceptacle. The species appears to be most closely related to H. homalopasta from Australia. This study has affirmed that the distribution of spermatangial structures within male chambers is a feature that cannot be used to separate Heydrichia from Sporolithon, the only other genus in Sporolithales, although features of thallus construction and tetra/bisporangia continue to distinguish the genera. A key to the southern African species from the order Sporolithales is provided.
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    n Evaluering van onderwysmetodes in musiekteoretiese vakke en gehoorontwikkeling
    (University of the Western Cape, 1991) Lochner, Maria Magdalena; van der Merwe, E.
    Praktiese ondervinding van die onderrig van Musiek op skoolvlak het getoon dat Musiekteoretiese vakke en Gehoorontwikkeling nie voldoende gestrukrureerd en gebaseer op wetenskaplik gefundeerde onderrigmetodes aangebied word nie. 'n Gebrek aan integrasie tussen Gehoorontwikkeling en die Musiekteoretiese vakke word vermoed. Innerlike gehoor is noodsaaklik is vir die musikus, maar bly grootliks onderontwikkel. Hierdie studie konsentreer op die integrasie wat nodig is tussen die Musiekteoretiese vakke en Gehoorontwikkeling, en toets empiries die mening van musiekstudente by wyse van 'n vraelys en di� van musiekdosente by wyse onderhoude. Die ondersoek spreek die algemene metodes aan waardeur die betrokke vakke onderrig word, asook die probleme wat daarmee gepaard gaan. Die musiekstudent se mening omtrent sy tersi�re musiekopleiding word gevra. Daar is bevind dat die twee disciplines nie doelmatig ge�ntegree aangebied word nie en voorstelle om die situasie te verbeter, word gemaak ..