Articles by Author: Riaan Dames

Search results for Riaan Dames

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  1. Optimal grazing management strategies: evaluating key concepts

    Optimal grazing management strategies: evaluating key concepts

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    Rangeland management strategies must be based on robust ecological and economic concepts if they are to be effective and profitable. Thus, the aim of this paper was to examine concepts related to grazing and resting of grassland and associated effects...
  2. Relationship between soil alteration index three (AI3), soil organic matter and tree performance in a ‘Cripps Pink’/M7 apple orchard

    Relationship between soil alteration index three (AI3), soil organic matter and tree performance in a ‘Cripps Pink’/M7 apple orchard

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Alteration index three (AI3), which calculates the balances between three microbially-secreted enzymes, potentially enables differences between soils due to contrasting management practices to be quantified in relative terms. The ability of AI3 to distinguish between apple orchard soils under conventional...
  3. Effect of organic and conventional practices on carbon-substrate utilisation by the soil microbial community in a ‘Cripps Pink’/M7 apple orchard

    Effect of organic and conventional practices on carbon-substrate utilisation by the soil microbial community in a ‘Cripps Pink’/M7 apple orchard

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Changes in microbial community metabolic profiles potentially can be used to identify differences in soil characteristics caused by dissimilar orchard floor management practices. The impacts of orchard floor management practices on the microbial community metabolic diversity (CMD) were examined in...
  4. Effect of conventional and organic orchard floor management practices on enzyme activities and microbial counts in a ‘Cripp's Pink’/M7 apple orchard

    Effect of conventional and organic orchard floor management practices on enzyme activities and microbial counts in a ‘Cripp's Pink’/M7 apple orchard

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Organic (ORG) production practices are increasingly being used in South African apple orchards. Whether ORG orchard floor management practices differ in their effects on soil enzyme activities and microbial populations from conventional (CON) practices have not been adequately investigated, particularly...
  5. Variation in urease and β-glucosidase activities with soil depth and root density in a ‘Cripp's Pink’/M7 apple orchard under conventional and organic management

    Variation in urease and β-glucosidase activities with soil depth and root density in a ‘Cripp's Pink’/M7 apple orchard under conventional and organic management

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    The effects of conventional (CON; utilising synthetic fertiliser and herbicide) and organic (ORG; nutrients supplied in compost, weeds controlled with straw mulch) orchard floor management practices on depth-wise variation in urease and β-glucosidase activities in tree-row soils were compared in...
  6. Estuarine and coastal connectivity of an estuarine-dependent fishery species, <em>Pomadasys commersonnii</em> (Haemulidae)

    Estuarine and coastal connectivity of an estuarine-dependent fishery species, <em>Pomadasys commersonnii</em> (Haemulidae)

    Item type: Journal Article • Journal: African Journal of Marine Science
    Understanding the level of connectivity between estuarine and coastal waters is essential for appropriate management of estuarine-associated taxa. Most studies have focused on the role of a single estuary, while limited research exists on the importance of multiple estuaries to...