Articles by Keyword: Survivorship

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  1. AN EXPERIMENTAL EVALUATION OF THE INFLUENCE OF TEMPERATURE ON THE NATURAL RATE OF INCREASE OF <em>DAPHNIA PULEX</em> DE GEER

    AN EXPERIMENTAL EVALUATION OF THE INFLUENCE OF TEMPERATURE ON THE NATURAL RATE OF INCREASE OF <em>DAPHNIA PULEX</em> DE GEER

    Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa
    Cohorts of Daphnia pulex from Boskop Dam, an irrigation reservoir near Potchefstroom, Transvaal, were kept at natural food levels under constant temperatures of 10, 15 and 20°C as well as under conditions of temperature with a diurnal fluctuation varying between...
  2. Variable community responses to herbivory in fire-altered landscapes of northern Patagonia, Argentina

    Variable community responses to herbivory in fire-altered landscapes of northern Patagonia, Argentina

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    Landscapes in northern Patagonia have undergone dramatic changes in fire regimes over the last century. Superimposed on this changing vegetation mosaic are impacts from introduced herbivores. In this paper we identify synergistic interactions developing into positive fire-herbivory feedbacks that maximise...
  3. Influence of sward defoliation and soil disturbance on seedling emergence and survival in the Southern Tall Grassveld

    Influence of sward defoliation and soil disturbance on seedling emergence and survival in the Southern Tall Grassveld

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    Seedling emergence, survival and species composition were recorded on vegetation subjected to seven practicably feasible soil and defoliation treatments. Soil disturbance, with defoliation removal, produced the greatest number of emergents; these also had the best survivorship compared to other treatments...
  4. Satellite telemetry of Afrotropical ducks: methodological details and assessment of success rates

    Satellite telemetry of Afrotropical ducks: methodological details and assessment of success rates

    Item type: Journal Article • Journal: African Zoology
    Despite widespread and increasing use of solarpowered satellite transmitters to tag wild birds, there are few published articles that detail how transmitters should be attached to different species and even fewer assessments of the overall field success of telemetry projects...