Articles by Author: David A Ehlers Smith

Search results for David A Ehlers Smith

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  1. Seasonal habitat requirements of Lemon Dove (<em>Aplopelia larvata</em>) in coastal forest: camera-trap surveys of a reclusive species

    Seasonal habitat requirements of Lemon Dove (<em>Aplopelia larvata</em>) in coastal forest: camera-trap surveys of a reclusive species

    Item type: Journal Article • Journal: African Zoology
    The modification of natural habitats requires behavioural plasticity, which may be challenging for ‘specialist’ species. Quantifying habitat requirements and behavioural responses of specialists to landscape transformation is thus a priority for baseline data to inform conservation practices. Using camera-trap surveys...
  2. An ecosystem approach to fisheries in the southern Benguela context

    An ecosystem approach to fisheries in the southern Benguela context

    Item type: Journal Article • Journal: African Journal of Marine Science
    The 2001 Reykjavík Declaration on Responsible Fisheries in the Marine Ecosystem and the Plan of Implementation of the 2002 World Summit on Sustainable Development highlighted the need in fisheries to look beyond considering only the target species and to consider...
  3. The Effect of Afforestation of Indigenous Scrub Forest with <em>Eucalyptus</em> on Streamflow from a Small Catchment in the Transvaal, South Africa

    Item type: Journal Article • Journal: South African Forestry Journal
    A small catchment under indigenous scrub forest on the Westfalia Estate near Tzaneen in the northern Transvaal was treated by first cutting the riverine (riparian) vegetation and subsequently clearing the remainder of the catchment and establishing a Eucalyptus plantation. The...
  4. ‘N Belowende tegniek vir die bepaling van struikbenutting

    ‘N Belowende tegniek vir die bepaling van struikbenutting

    ‘n Moontlike tegniek om die mate van struikbeijutting te bepaal, sonder enige vooraf metings, word uiteengesit. ‘n Hoë korrelasie (r = 0,8563) bestaan tussen lootdeursnit en totale lootmassa (massa van die loot plus blare) van Portulacaria afra. ’n Weidingsproef is...
  5. The evaluation of tropical pasture species in the Transvaal

    The evaluation of tropical pasture species in the Transvaal

    The performance and compatibility of seven tropical legumes grown in association with two grasses were compared over four years at two localities in the Transvaal.
  6. The pattern of the woody species of the nylsvley savanna ecosystem project area

    The pattern of the woody species of the nylsvley savanna ecosystem project area

    A recent survey of the woodyplants in the Naboomspruit area of the Northern Transvaal has bourne out the fact that plants rarely occur at random in an ecosystem. The densities of all the woody species in five localities of Burkea‐Ochna...
  7. Proposed computerized cross‐index system for storage and retrieval of literature references

    Proposed computerized cross‐index system for storage and retrieval of literature references

    Card index systems are normally not very efficient when used for cross‐indexing purposes and information retrieval, useful information frequently being lost because of poor indexing and little or no cross‐referencing. Large card index systems are often compiled by research workers...
  8. The influence of vesicular‐arbuscular mycorrhizas on production and nutrition of white clover

    The influence of vesicular‐arbuscular mycorrhizas on production and nutrition of white clover

    Inoculating white clover seedlings with E3 and Glomus tenuis vesicular‐arbuscular mycorrhizas produced slight increases in dry matter production in unsterilized field plots at Cedara, Natal. Phosphorus levels in plant tops showed no increases due to mycorrhizas but crude protein content...