Articles by Keyword: Habitat Loss

Search results for Habitat Loss

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  1. NEW DISTRIBUTION RECORDS FOR <em>CLARIAS THEODORAE</em> WEBER 1897, <em>BARBUS EUTAENIA</em> BOULENGER 1904, <em>BARBUS POLYLEPIS</em> BOULENGER 1907 AND <em>OPSARIDIUM ZAMBEZENSE</em> (PETERS 1852) FROM THE WATERBERG, TRANSVAAL, SOUTH AFRICA.

    NEW DISTRIBUTION RECORDS FOR <em>CLARIAS THEODORAE</em> WEBER 1897, <em>BARBUS EUTAENIA</em> BOULENGER 1904, <em>BARBUS POLYLEPIS</em> BOULENGER 1907 AND <em>OPSARIDIUM ZAMBEZENSE</em> (PETERS 1852) FROM THE WATERBERG, TRANSVAAL, SOUTH AFRICA.

    Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences
    New distribution records for four fish species in the Waterberg mountains of the Transvaal were established during surveys since 1987–92. Clarias theodorae was previously reported from one locality each in the Waterberg and Soutpansberg. The current survey disclosed its presence...
  2. Plant traits and spread of the invasive salt marsh grass, <em>Spartina alterniflora</em> Loisel., in the Great Brak Estuary, South Africa

    Plant traits and spread of the invasive salt marsh grass, <em>Spartina alterniflora</em> Loisel., in the Great Brak Estuary, South Africa

    Item type: Journal Article • Journal: African Journal of Marine Science
    Spartina alterniflora Loisel., widely recognised as an aggressive invader of estuaries and salt marshes around the world, was discovered growing in the temporarily open/closed Great Brak Estuary on the southern Cape coast of South Africa in 2004. This is the...
  3. Toepassíng van ‘n gronderosievergelyking op natuurlike veld van die sentrale oranje‐vrystaat

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    ‘n Oorhoofse roterende rcënvalnabootscr is gebruik orn numericse waardes vir sekere faktore van die universele gronderosi‐evcrgelyking vas te stel. Alhocwei dit tydens hierdie Studie nodig was om sekere belangrike aannames te maak, het die afgeleide data betekenisvol ooreengestem met die...
  4. Die invloed van brand en maai op onbeweide langgrasveld in Natal

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    The effect of burning and mowing on ungrazed tall grassveld of Natal. The trial was conducted on the Estcourt Research Station to show the effect of 14 burning and mowing treatments without grazing in the tall grassveld of Natal. The...
  5. The influence of different land‐use practices on soil erosion, herbage production and on grass species richness and diversity

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    A fence‐line contrast study compared erosion levels, herbage production and grass species diversity in Umfolozi Game Reserve (UGR) and adjacent KwaZulu (KWZ). There was no significant difference in soil loss or A‐horizon depths measured in KWZ and UGR, but there...
  6. Effect of the amount of surface maize residue on infiltration and soil loss from a clay loam soil

    Effect of the amount of surface maize residue on infiltration and soil loss from a clay loam soil

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Six levels of maize stover, expressed as percentage ground cover (0–75%) were compared under a rainfall simulator to assess the effect of surface residues on infiltration and soil loss on a clay loam soil with a 3,5% slope. Increasing the...
  7. Changes in percentage moisture loss of excised leaves of seven field-grown grain sorghum genotypes

    Changes in percentage moisture loss of excised leaves of seven field-grown grain sorghum genotypes

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    The objectives of these experiments were to study the seasonal and diurnal changes in percentage moisture loss (PML) and correlated characteristics of excised leaves. Seven grain sorghum genotypes were planted in a randomized block design and their PML and the...
  8. The erodibility of some soil series In the pineapple-producing coastal area of the eastern Cape

    The erodibility of some soil series In the pineapple-producing coastal area of the eastern Cape

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    A rotating-boom rainfall simulator was used to measure soil losses from eight soil series falling within five morphologically dissimilar soil forms, i.e. Bonheim, Glenrosa, Kroonstad, Mayo and Oakleaf. The data obtained were used to calculate the soil erodibility factor (K)...
  9. Unavoidable losses in insecticidal control of <em>Chilo partellus</em> (Swinhoe) (Lepidoptera: Pyralidae) in maize and grain sorghum

    Unavoidable losses in insecticidal control of <em>Chilo partellus</em> (Swinhoe) (Lepidoptera: Pyralidae) in maize and grain sorghum

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Single applications of insecticide against Chilo partellus at different times in the pre-flowering stages of maize and from early whorl to soft dough stage in grain sorghum were compared with multiple applications. Based on yield and the incidence of damaged...
  10. Resistance of South African maize hybrids to maize streak virus

    Resistance of South African maize hybrids to maize streak virus

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Data from maize cultivar trials at Vaalharts over a five-year period were used to evaluate the level of resistance to maize streak virus (MSV) in commercial maize hybrids, and to determine the potential value of such resistance. Maize hybrids presently...