Articles by Author: Angus Hh Macdonald

Search results for Angus Hh Macdonald

We found 43 results for you
  1. Evidence of multiple divergent mitochondrial lineages within the southern African diplopod genus <em>Bicoxidens</em> Attems, 1928 (Spirostreptida)

    Evidence of multiple divergent mitochondrial lineages within the southern African diplopod genus <em>Bicoxidens</em> Attems, 1928 (Spirostreptida)

    Item type: Journal Article • Journal: African Zoology
    Two recent studies have suggested that divergent mitochondrial lineages may be present within spirostreptid genera such as Bicoxidens Attems, 1928. Bicoxidens, similar to many other endemic soil invertebrates, exhibits low dispersal capabilities and strict microclimate habitat preferences, attributes that often...
  2. Reductions in Plant Species Richness under Stands of Alien Trees and Shrubs in the Fynbos Biome

    Item type: Journal Article • Journal: South African Forestry Journal
    The reduction of species richness of indigenous plants is one of the major problems associated with the presence of dense stands of invasive alien trees and shrubs in the Fynbos Biome of the Cape Province, South Africa. A synthesis was...
  3. Pattern and process in a semi‐arid grassveld in Rhodesia

    Pattern and process in a semi‐arid grassveld in Rhodesia

    The study was conducted on the grass component of Redsoil veld at four sites in the vicinity of Bulawayo, situated in the medium rainfall (400 to 700 mm) zone of Rhodesia. A pattern in which the veld consists of a...
  4. The responses of tall fescue and white clover to lime and phosphorus on highly leached soils of the natal mistbelt

    The responses of tall fescue and white clover to lime and phosphorus on highly leached soils of the natal mistbelt

    The influence of lime and P on the performances of pure white clover and white clover/tall fescue swards on two highly leached Mistbelt soils was examined in factorial design. First season data, discussed in this paper, indicated highly significant dry...
  5. Productivity and stability of various Grass‐legume mixtures with different intensities of defoliation and levels of nitrogen fertilisation

    Productivity and stability of various Grass‐legume mixtures with different intensities of defoliation and levels of nitrogen fertilisation

    Three trials were established at Cedara under dryland conditions to determine the production, persistence and value of Trifolium repens cv. Ladino, Trifolium pratense cv. Kenland red and Desmodium uncinatum cv. Silverleaf. These legumes were row‐planted into Pennisetum clandestinum (kikuyu); Cynodon...
  6. Growth patterns of Italian ryegrass cultivars established in different seasons

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    A comparison is made between various Italian ryegrass cultivars established under irrigation on a well‐drained upland site during the traditional autumn months, with plantings of the same cultivars at other times of the year.
  7. The influence of lime and phosphorus on the growth of white clover on highly weathered Natal soils

    The influence of lime and phosphorus on the growth of white clover on highly weathered Natal soils

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Results of field studies conducted on highly weathered Natal soils in which the performance of white clover (Trifolium repens cv. Regal ladino) was examined under a range of lime and P treatments applied in factorial combination, are presented. Despite adverse...
  8. Costing the initial clearance of alien <em>Acacia</em> species invading fynbos vegetation

    Costing the initial clearance of alien <em>Acacia</em> species invading fynbos vegetation

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    The costs of the initial clearing of mixed stands of the alien Acacia cyclops and A. saligna invading fynbos vegetation were compared in a replicated trial on the Pella Fynbos Research Site. Costs were estimated using a regression-based model of...
  9. REVIEWS

    REVIEWS

    Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology