Articles by Author: Mark Gush

Search results for Mark Gush

We found 90 results for you
  1. A comparison of productive and non-productive green water-use efficiency of <em>Podocarpus henkelii</em> and <em>Pinus patula</em> in the KwaZulu-Natal Midlands

    A comparison of productive and non-productive green water-use efficiency of <em>Podocarpus henkelii</em> and <em>Pinus patula</em> in the KwaZulu-Natal Midlands

    Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science
    A number of studies undertaken in South Africa to quantify the green water-use (total evaporation) of introduced commercial forestry species have shown conclusively that green water-use from commercial forest plantations is substantially higher than from the original grasslands or fynbos...
  2. The potential of <em>Vachellia kosiensis</em> (<em>Acacia kosiensis</em>) as a dryland forestry species in terms of its water use, growth rates and resultant water-use efficiency<xref ref-type="fn" rid="F0000"/>

    The potential of <em>Vachellia kosiensis</em> (<em>Acacia kosiensis</em>) as a dryland forestry species in terms of its water use, growth rates and resultant water-use efficiency<xref ref-type="fn" rid="F0000"/>

    Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science
    The potential of the country’s numerous indigenous tree species to address challenges facing the commercial forestry industry in South Africa is under-explored. Relevant issues include the rising demand for timber and non-timber forest products due to population and economic growth,...
  3. Single-tree water use and water-use efficiencies of selected indigenous and introduced species in the Southern Cape region of South Africa

    Single-tree water use and water-use efficiencies of selected indigenous and introduced species in the Southern Cape region of South Africa

    Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science
    In South Africa, the development of a plantation tree industry using fast-growing introduced species was accelerated by the limited extent of indigenous forests. However, concerns about the impacts of plantations on the country’s limited water resources has initiated forest hydrology...
  4. (Φ, <em>M</em>)–extensions of near-rings

    (Φ, <em>M</em>)–extensions of near-rings

    Item type: Journal Article • Journal: Quaestiones Mathematicae
    In this paper, we define and study a generalization of matrix, polynomial, and group near-rings. New results on ideal essentiality and lying over are obtained.
  5. Approach structures and measures of connectedness

    Approach structures and measures of connectedness

    Item type: Journal Article • Journal: Quaestiones Mathematicae
    Measures of connectedness versus disconnectedness are introduced in anarbitrary topological construct as fixed points of a Galois connection. This places measures of connectedness found in the literature in a general categorical frame-work.
  6. SHORT NOTES

    SHORT NOTES

    Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology
  7. TOWARDS THE SUSTAINABLE WATER QUALITY MANAGEMENT OF AN URBANISED AFRICAN RIVER CATCHMENT: THE KLIP RIVER, GAUTENG, SOUTH AFRICA

    TOWARDS THE SUSTAINABLE WATER QUALITY MANAGEMENT OF AN URBANISED AFRICAN RIVER CATCHMENT: THE KLIP RIVER, GAUTENG, SOUTH AFRICA

    Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences
    A water quality impact assessment of Greater Johannesburg's three southern wastewater treatment works was undertaken to quantify present and predict future contributions of pollution to the Klip River, as well as the impact on downstream users. This information is required...
  8. Scale, heterogeneity and secondary production in tropical rangelands

    Scale, heterogeneity and secondary production in tropical rangelands

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    Tropical rangelands across the world are experiencing land use intensification pressures which are reducing the spatial scale of grazing management units. There are implications of a reduction in scale on environmental heterogeneity and its relationship with secondary production of large...