Articles by Author: Ae Bester Van Der Merwe

Search results for Ae Bester Van Der Merwe

We found 202 results for you
  1. Controlled Pollination in <em>Pinus Patula:</em> Constraints and Possible Solutions

    Controlled Pollination in <em>Pinus Patula:</em> Constraints and Possible Solutions

    Item type: Journal Article • Journal: The Southern African Forestry Journal
    Pinus patula is the most important commercial pine species grown in southern Africa and it is, therefore, very important to have well developed breeding and production strategies for this species. Strategies which have been developed for SAFCOL's breeding programme include...
  2. The Marine Mammal Programme at the Prince Edward Islands: 38 years of research

    The Marine Mammal Programme at the Prince Edward Islands: 38 years of research

    Item type: Journal Article • Journal: African Journal of Marine Science
    The Marine Mammal Programme (MMP) conducts research on pinnipeds and killer whales Orcinus orca at Marion Island, Prince Edward Islands, under the auspices of the Mammal Research Institute, Department of Zoology and Entomology, University of Pretoria. The history of the...
  3. Reproductive strategy of the Egyptian free-tailed bat, <em>Tadarida aegyptiaca</em>, from a subtropical latitude (25°S) in South Africa

    Reproductive strategy of the Egyptian free-tailed bat, <em>Tadarida aegyptiaca</em>, from a subtropical latitude (25°S) in South Africa

    Item type: Journal Article • Journal: African Zoology
    Free-tailed bats (Molossidae) are widely distributed in Africa and exhibit considerable reproductive flexibility. The Egyptian free-tailed bat, Tadarida aegyptiaca, is one of the most widespread of the molossids and is therefore an excellent model to study the variation in reproduction...
  4. Inshore occurrence of southern right whales (<em>Eubalaena australis</em> ) at Subantarctic Marion Island

    Inshore occurrence of southern right whales (<em>Eubalaena australis</em> ) at Subantarctic Marion Island

    Item type: Journal Article • Journal: African Zoology
    Opportunistic shore-based sightings of southern right whales Eubalaena australis for Marion Island (46°54’S, 37°45’E) were documented at five different times between 1974 and 2009. Whales were sighted between May and September and exclusively on the eastern lee side of the...
  5. Molecular species identification and population genetics of chondrichthyans in South Africa: current challenges, priorities and progress

    Molecular species identification and population genetics of chondrichthyans in South Africa: current challenges, priorities and progress

    Item type: Journal Article • Journal: African Zoology
    Molecular genetic techniques, such as DNA barcoding and genotyping, are increasingly being used to assist with the conservation and management of chondrichthyans worldwide. Southern Africa is a shark biodiversity hotspot, with a large number of endemic species. According to the...
  6. Phylogeography of the pelagic fish <em>Seriola lalandi</em> at different scales: confirmation of inter-ocean population structure and evaluation of southern African genetic diversity

    Phylogeography of the pelagic fish <em>Seriola lalandi</em> at different scales: confirmation of inter-ocean population structure and evaluation of southern African genetic diversity

    Item type: Journal Article • Journal: African Journal of Marine Science
    The study investigated the global and regional phylogeography of the yellowtail kingfish Seriola lalandi by examining genetic diversity and population genetic structure of this species at inter-and intra-ocean level and on a regional scale. DNA fragments of two mitochondrial genes,...
  7. Molecular research on the systematically challenging smoothhound shark genus <em>Mustelus</em>: a synthesis of the past 30 years

    Molecular research on the systematically challenging smoothhound shark genus <em>Mustelus</em>: a synthesis of the past 30 years

    Item type: Journal Article • Journal: African Journal of Marine Science
    The species-rich genus Mustelus (smoothhounds) of the shark family Triakidae is one of the most bio-economically important groups of elasmobranchs in the world’s oceans. Despite the commercial value of Mustelus, the systematics of the group remains largely unresolved and there...
  8. Production Capacity of Softwood Sawmills in the Republic of South Africa, Swaziland and Transkei

    Item type: Journal Article • Journal: South African Forestry Journal
    The technical and practical capacities of softwood sawmills and boxmills in the Republics of South Africa, Transkei and Ciskei and the Kingdom of Swaziland were estimated as at 30 June 1987. These estimates show that sawmills in Southern Africa are...
  9. A Technique for Producing Soil Water Retention Curves

    Item type: Journal Article • Journal: South African Forestry Journal
    Water retention curves compiled for specific soil types are an essential management and research tool in evaluating plant stress. The method of producing water retention curves by means of the 1500 kPa pressure extractor is described.
  10. Storage of <em>Pinus radiata</em> Foliage Prior To Determination of Water Potential

    Item type: Journal Article • Journal: South African Forestry Journal
    A procedure to sample and store foliage of Pinus radiata seedlings prior to determination of the water potential is described. The water potential of P. radiata fascicles sampled at pre-dawn can be maintained for seven hours by storing the foliage...