Articles by Author: Joh R Henschel

Search results for Joh R Henschel

We found 10 results for you
  1. The colonization of artificial substrata by marine sessile organisms in False Bay. 1. Community development

    The colonization of artificial substrata by marine sessile organisms in False Bay. 1. Community development

    Item type: Journal Article • Journal: South African Journal of Marine Science
    Marine sessile communities developing on stainless steel test panels set 10 and 20 m deep in False Bay over periods ranging from a month to a year were examined. The establishment of communities was characterized by seasonal succession, colonization rates...
  2. The colonization of artificial substrata by marine sessile organisms in False Bay. 2. Substratal material

    The colonization of artificial substrata by marine sessile organisms in False Bay. 2. Substratal material

    Item type: Journal Article • Journal: South African Journal of Marine Science
    The colonization of six test materials by marine sessile communities was examined at 10 and 20 m in False Bay, South Africa, for periods ranging from a month to a year. The initial development of fouling communities at each depth...
  3. Energetics and Water Relations of Namib Desert Rodents

    Item type: Journal Article • Journal: South African Journal of Zoology
    All the Namib rodents investigated, except Petromus, can survive without water on a diet of air-dried seed. Water turnover rates of these animals in the laboratory confirmed their low water requirements. Field water turnover rates were remarkably low, probably because...
  4. Age determination and age structure of a striped fieldmouse, <em>Rhabdomys pumilio</em>, population from the Cape Flats

    Item type: Journal Article • Journal: South African Journal of Zoology
    The validity of predicting the age of Rhabdomys pumilio by age-related changes in tooth appearance, dimensions and position, in body mass and head-body length is tested against 47 known-age mice. Body mass can be used to determine the age of...
  5. A preliminary molecular phylogeny of the Namib Desert darkling beetles (Tenebrionidae)

    A preliminary molecular phylogeny of the Namib Desert darkling beetles (Tenebrionidae)

    Item type: Journal Article • Journal: African Zoology
    A systematic classification of Namib Desert darkling beetles (Coleoptera: Tenebrionidae) based on morphological characters is complicated as strong selection pressures exerted by desert conditions have led to a suite of convergent morphological characteristics. Here we present a first and preliminary...
  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. Web spider abundance is affected by sheep farming in the Karoo<xref ref-type="fn" rid="FN0000"/>

    Web spider abundance is affected by sheep farming in the Karoo<xref ref-type="fn" rid="FN0000"/>

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    Impacts of livestock farming include effects on arthropods and a range of related ecological processes. Grazing by sheep may indirectly affect web spider populations by changing vegetation structures available for web construction, or directly by trampling the spiders or their...
  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. Introduction to the Karoo Special Issue: Trajectories of Change in the Anthropocene<xref ref-type="fn" rid="FN0000"/>

    Introduction to the Karoo Special Issue: Trajectories of Change in the Anthropocene<xref ref-type="fn" rid="FN0000"/>

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    The Karoo is an arid to semi-arid area across the western third of South Africa, comprising the Succulent Karoo and Nama-Karoo biomes. Its environment and people have experienced considerable changes, and now face new challenges as the Anthropocene unfolds. This...
  10. Reflections on the Karoo Special Issue: towards an interdisciplinary research agenda for South Africa’s drylands<xref ref-type="fn" rid="FN0000"/>

    Reflections on the Karoo Special Issue: towards an interdisciplinary research agenda for South Africa’s drylands<xref ref-type="fn" rid="FN0000"/>

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    We begin this essay with reflections on major research themes highlighted by the Karoo Special Issue (KSI). These include concerns over land-use change, long-term monitoring, climate change, governance and the need for more interdisciplinary research. We also identify some of...