Articles by Keyword: Ecosystem Function

Search results for Ecosystem Function

We found 129 results for you
  1. Production and decomposition of plant litter in an arid rangeland of Kenya

    Production and decomposition of plant litter in an arid rangeland of Kenya

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    Data on litter production and decomposition in an arid rangeland in Kenya was collected over a two-year period. Utter sampling was carried out at monthly intervals using a rectangular 0.25m−2 quadrat frame. Utter within the quadrats was handpicked and washed...
  2. Long-term livestock grazing increases the recruitment success of epigeal termites: insights from a >75-year grazing experiment in the Karoo, South Africa

    Long-term livestock grazing increases the recruitment success of epigeal termites: insights from a >75-year grazing experiment in the Karoo, South Africa

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    Epigeal termites alter ecosystem-level processes through foraging and mound building. These effects are proportional to density. Whilst much is known about the factors influencing mound density in natural settings, how termites respond to livestock grazing has been overlooked. We compared...
  3. Prosedures en probleme by die gebruik van die PUTU9–87 gewasgroeisimulasiemodel vir koring onder besproeiing in die Vanderkloof-Staatswaterskema

    Prosedures en probleme by die gebruik van die PUTU9–87 gewasgroeisimulasiemodel vir koring onder besproeiing in die Vanderkloof-Staatswaterskema

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Die doel van hierdie ondersoek was om die PUTU9–87 gewasgroeisimulasiemodelte kalibreer om koringop-brengste en die grondwaterinhoud op 'n bevredlgende wyse in die Vanderkloof-Staatswaterskema te voor- spel, gegewe beperkte eksperimentele data. Opbrengste wat met PUTU voorspel is, word vergelyk met eksperimentele...
  4. Complete compositions of a natural number

    Complete compositions of a natural number

    Item type: Journal Article • Journal: Quaestiones Mathematicae
    An alternative proof is given for the recently established fact that approximately one half of all compositions of a natural number are complete.
  5. Lattices of uniformly continuous functions

    Lattices of uniformly continuous functions

    Item type: Journal Article • Journal: Quaestiones Mathematicae
    We obtain an internal characterization of the lattice U (X) of real-valued uniformly continuous functions on a uniform space X.
  6. A RULE-BASED ECOSYSTEM MODEL FOR THE MANAGEMENT OF LAKE ST LUCIA

    A RULE-BASED ECOSYSTEM MODEL FOR THE MANAGEMENT OF LAKE ST LUCIA

    Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa
    Land transformations in the catchments of Lake St Lucia have altered the hydrology of the system and increased management is now needed to counteract these changes. There are several management options available, but prior to implementing them we must be...
  7. FURTHER COMMENT ON THE RESPONSE OF EASTERN CAPE PROVINCE ESTUARIES TO VARIABLE FRESHWATER INFLOWS

    FURTHER COMMENT ON THE RESPONSE OF EASTERN CAPE PROVINCE ESTUARIES TO VARIABLE FRESHWATER INFLOWS

    Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences
    River flow patterns in the Kariega, Great Fish and Keiskamma estuaries, South Africa are examined to assess the impact variation in flow has upon the delivery of inorganic nutrients, total organic carbon, primary productivity and the heterotrophic components, bacteria and...
  8. DUNE MINING AND THE NHLABANE SYSTEM: CAN BIODIVERSITY AND THE NURSERY FUNCTION BE MAINTAINED?

    DUNE MINING AND THE NHLABANE SYSTEM: CAN BIODIVERSITY AND THE NURSERY FUNCTION BE MAINTAINED?

    Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences
    A four year study of the Nhlabane Estuary and Lake System was undertaken over the period 1992 to 1995. Data gathered clearly showed that in terms of ichthyofauna, the estuary plays an important role as a nursery ground for juveniles...
  9. Remote sensing and change detection in rangelands

    Remote sensing and change detection in rangelands

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    During the 20 th century, we have witnessed an improvement in the quality of imagery available for rangeland auditing, from the earliest mono-chromatic aerial photographs, followed by the first infra-red images, to the abundance of high resolution, multi-spectral imagery currently...
  10. Lines around fragments: effects of fencing on large herbivores

    Lines around fragments: effects of fencing on large herbivores

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    People construct fences to delineate land ownership and to control access to land. Fences accomplish several purposes, notable among these are containing livestock or wildlife raised for profit or subsistence, excluding use of vegetation within areas to be conserved and...