Articles by Author: Suzanne J Milton

Search results for Suzanne J Milton

We found 48 results for you
  1. Fluctuations in bird numbers on sewage treatment ponds in an arid environment, South Africa

    Fluctuations in bird numbers on sewage treatment ponds in an arid environment, South Africa

    Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology
    Regular twice-monthly counts of birds associated with water at the Prince Albert sewage disposal facility recorded 69 species, of which 16 species (23.5%) were waterbirds (ducks, Red-knobbed Coot Fulica cristata and Little Grebe Tachybaptus ruficollis) and 21 species were shorebirds...
  2. Effect of <em>Prosopis</em> (mesquite) invasion and clearing on vegetation cover in semi-arid Nama Karoo rangeland, South Africa

    Effect of <em>Prosopis</em> (mesquite) invasion and clearing on vegetation cover in semi-arid Nama Karoo rangeland, South Africa

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    The Nama-Karoo is the largest of the three biomes that comprise the semi-arid Karoo-Namib ecoregion of southern Africa. Large tracts of Nama-Karoo rangeland have been invaded by alien leguminous trees of the genus Prosopis. We assessed the impact of Prosopis...
  3. Vegetation dynamics after experimental fire disturbance in the arid Succulent Karoo, South Africa

    Vegetation dynamics after experimental fire disturbance in the arid Succulent Karoo, South Africa

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    Disturbance by fire in the Succulent Karoo is rare but fire events could increase as a result of an increase in grassiness (alien and indigenous species). This study assessed the effects of fire eight years after an experimentally induced burn...
  4. Impact of <em>Prosopis</em> (mesquite) invasion and clearing on vegetation species composition and diversity in semi-arid Nama-Karoo rangeland, South Africa

    Impact of <em>Prosopis</em> (mesquite) invasion and clearing on vegetation species composition and diversity in semi-arid Nama-Karoo rangeland, South Africa

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    The Nama-Karoo biome occupies 28% of South Africa’s land area. Alien leguminous trees of the genus Prosopis have invaded large tracts of Nama-Karoo rangeland. We evaluated the impact of Prosopis invasion and clearing on vegetation species composition and diversity (alien...
  5. Ants (Formicidae) as food for birds in southern Africa: opportunism or survival?

    Ants (Formicidae) as food for birds in southern Africa: opportunism or survival?

    Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology
    Ants (Hymenoptera: Formicidae) are eaten by a number of bird species in southern Africa. Our database contained 545 species (excluding waterbirds and raptors), of which 179 species have been observed feeding on ants, or had ants in their stomachs. Ants...
  6. Reflections, applications and future directions of Long-Term Ecological Research at Tierberg<xref ref-type="fn" rid="FN0000"/>

    Reflections, applications and future directions of Long-Term Ecological Research at Tierberg<xref ref-type="fn" rid="FN0000"/>

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    Tierberg-LTER is a research site established in 1987 in the semi-arid Succulent Karoo near Prince Albert in the Western Cape province, South Africa. The original purpose for its establishment was to study ecosystem dynamics and the drivers of vegetation in...
  7. Drivers and trajectories of social and ecological change in the Karoo, South Africa<xref ref-type="fn" rid="FN0000"/>

    Drivers and trajectories of social and ecological change in the Karoo, South Africa<xref ref-type="fn" rid="FN0000"/>

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    This review article explores past, present and possible future drivers of change in Karoo social-ecological systems. Biogeographically, the Karoo comprises the arid Succulent Karoo and Nama-Karoo biomes covering significant portions of the Northern Cape, Eastern Cape and Western Cape provinces...
  8. Effects of short-term intensive trampling on Karoo vegetation<xref ref-type="fn" rid="FN0000"/>

    Effects of short-term intensive trampling on Karoo vegetation<xref ref-type="fn" rid="FN0000"/>

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    Plant growth forms likely respond differently to disturbances such as trampling. We investigated the trampling effect of 1 600 sheep encamped at night in temporary enclosures (kraals, corrals or pens), which were relocated weekly. To examine trampling effects and regeneration...
  9. Growth in three Karoo shrub species under various grazing treatments: the tracking of marked individuals over 25 years

    Growth in three Karoo shrub species under various grazing treatments: the tracking of marked individuals over 25 years

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    Growth studies of long-lived shrubs are uncommon. In semi-arid rangelands, livestock and wildlife grazing influence growth processes and may interact with changing climate. Tierberg-LTER, excluded from livestock since 1987, and two adjacent ranches allowed for a comparative growth study of...
  10. Slow Recovery of Defoliated Seven-Weeks Fern <em>Rumohra adiantiformis</em> in Harkerville Forest

    Item type: Journal Article • Journal: South African Forestry Journal
    Five years is insufficient time for seven-weeks fern Rumohra adiantiformis, growing under natural conditions in the indigenous forests of the southern Cape, to recover from total or partial defoliation. The mean length of fronds in commercially picked R. adiantiformis populations...