Articles by Keyword: Communal Roosting

Search results for Communal Roosting

We found 48 results for you
  1. Thermoregulation under semi-natural conditions in speckled mousebirds: the role of communal roosting

    Thermoregulation under semi-natural conditions in speckled mousebirds: the role of communal roosting

    Item type: Journal Article • Journal: African Zoology
    Mousebirds (Coliiformes) exhibit well-developed communal roosting behaviour as well as a pronounced capacity for facultative hypothermic responses. We recorded body temperature (Tb)) in speckled mousebirds (Colius striatus) under semi-natural conditions in outdoor aviaries, and examined interactions between behavioural and metabolic...
  2. Roosting requirements of Helmeted Guineafowl <em>Numida meleagris</em> on Highveld grain and livestock farms with alien tree groves, Gauteng province, South Africa

    Roosting requirements of Helmeted Guineafowl <em>Numida meleagris</em> on Highveld grain and livestock farms with alien tree groves, Gauteng province, South Africa

    Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology
    This study describes the relationship between Helmeted Guineafowl Numida meleagris and invasive alien trees on livestock and maize farms south-east of Johannesburg, Gauteng province, South Africa. The dependence of the birds on alien trees affects strategies for the removal of...
  3. How economic are the farming units of Leliefontein, Namaqualand?

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    Nomadic pastoralism has been practised in Leliefontein for centuries. In 1984, the area was formally divided into 47 so‐called ‘economic units’ on the assumption that this agricultural approach would (a) promote development in the region and (b) introduce conservation management...
  4. Communal land use and the ‘tragedy of the commons’: Some problems and development perspectives with specific reference to semi‐arid regions of southern Africa

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    Traditional communal farming in southern Africa has often been described as unproductive and directly responsible for regional poverty and vegetation degradation. Each aspect of this argument rests on a set of unchallenged assumptions concerning the nature of communal farming. Studies...
  5. Influence of rainfall and grazing on the compositional change of the herbaceous layer of a sandveld savanna

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    The influence of heavy grazing by cattle for three years, and of rainfall interception for one year, on the herbaceous composition of a sandveld savanna in Gazankulu was investigated. The composition and the abundance of the predominant species changed substantially,...
  6. Soil properties changes after short-term livestock exclusion in “degraded” communally managed rangelands in the western Bophirima District, South Africa

    Soil properties changes after short-term livestock exclusion in “degraded” communally managed rangelands in the western Bophirima District, South Africa

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Livestock grazing and detrimental overgrazing are commonly associated with severe rangeland degradation particularly in communally managed pastoral systems in South Africa. Effects of grazing exclusion on vegetation are well documented, but there is a dearth of quantitative research conducted in...
  7. Patterns of seed production and shrub association in two palatable Karoo shrub species under contrasting land use intensities

    Patterns of seed production and shrub association in two palatable Karoo shrub species under contrasting land use intensities

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    Seed production and shrub association patterns of the two palatable shrubs. Tripteris sinuatum and Tetragoma froticosa were investigated on heavily grazed communal and lightly grazed commercial rangeland in the succulent karoo, Namaqualand. Seed production in both these species was substantially...
  8. Correlates of stocking rate and overgrazing in the Leliefontein Communal Reserve, central Namaqualand

    Correlates of stocking rate and overgrazing in the Leliefontein Communal Reserve, central Namaqualand

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    We investigate the correlates of stocking rate in the Leliefontein communal reserve and attempt to provide a mechanistic explanation of the controlling factors. We further speculate on how high stocking rates are maintained in relation to the current state of...
  9. Mineral element status of soils, native pastures and cattle blood serum in the mid-altitude of western Ethiopia

    Mineral element status of soils, native pastures and cattle blood serum in the mid-altitude of western Ethiopia

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    Despite the crucial role of mineral elements in animal production and health, their status in soil, native pasture and animal body tissues or fluids in the mid-altitude of Ethiopia has had little study. To determine the concentration of mineral elements...
  10. Vegetation patterns and nutrients in relation to grazing pressure and soils in the sandveld and hardveld communal grazing areas of Botswana

    Vegetation patterns and nutrients in relation to grazing pressure and soils in the sandveld and hardveld communal grazing areas of Botswana

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    A major challenge confronting managers of extensive grazing systems is uneven use of herbaceous forage plants by livestock. The concentration of grazing in preferred areas or around foci points (e.g. water points) eventually results in adverse impacts in soil nutrients,...