Articles by Author: Lars Guenther

Search results for Lars Guenther

We found 11 results for you
  1. Support for research in climate change and nuclear energy, but less so for fracking: Born-free South Africans’ attitudes towards scientific controversies

    Support for research in climate change and nuclear energy, but less so for fracking: Born-free South Africans’ attitudes towards scientific controversies

    Research into public perceptions of science and technology has often focused on scientific controversies (such as biotechnology or fracking), in order to inform policy decisions or to develop better communication strategies. Recent trends in this field of research acknowledge that...
  2. The effects of a deferred grazing system on rangeland vegetation in a north-western, semi-arid region of Tanzania

    The effects of a deferred grazing system on rangeland vegetation in a north-western, semi-arid region of Tanzania

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    The present study assessed the effects of deferred grazing management on rangeland condition using aboveground biomass, vegetation cover and species composition as indicators of range condition. The experiment was based on traditionally conserved exclosures (ngitili). Data were collected in Shinyanga...
  3. Identifying the potential wintering sites of the globally threatened Aquatic Warbler <em>Acrocephalus paludicola</em> using remote sensing

    Identifying the potential wintering sites of the globally threatened Aquatic Warbler <em>Acrocephalus paludicola</em> using remote sensing

    Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology
    The Aquatic Warbler is a threatened Afro-Palaearctic migrant with a largely unknown distribution in the winter (non-breeding) season. Protection of wintering sites may be crucial for the conservation of the species. Previous studies have identified extensive areas of north-western sub-Saharan...
  4. Making findings for the future: representational order and redemption in the work of the TRC

    Making findings for the future: representational order and redemption in the work of the TRC

    Item type: Journal Article • Journal: South African Journal of Philosophy
    The following paper examines the ways in which the South African Truth and Reconciliation Commission provided redemption to both individual perpetrators and to political organisations responsible for Gross Human Rights Violations by virtue of the particular representational ordering that was...
  5. Research and conservation of the larger parrots of Africa and Madagascar: a review of knowledge gaps and opportunities

    Research and conservation of the larger parrots of Africa and Madagascar: a review of knowledge gaps and opportunities

    Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology
    Parrot populations in Africa and Madagascar are declining and the need for conservation actions to address threats is increasingly recognised. Effective conservation requires a robust knowledge base on which decisions over appropriate actions can be made, yet at present there...
  6. Diversity, dispersal and disturbance: cladoceran species composition in the Okavango Delta

    Diversity, dispersal and disturbance: cladoceran species composition in the Okavango Delta

    Item type: Journal Article • Journal: African Zoology
    Communities exposed to intermediate disturbances have been shown to be more diverse than more stable or unstable systems. We recorded the diversity pattern of zooplankton in the Okavango Delta, Botswana, a system which include water bodies with different stability with...
  7. Silvopastoral system based on <em>Ficus thonningii</em>: an adaptation to climate change in northern Ethiopia

    Silvopastoral system based on <em>Ficus thonningii</em>: an adaptation to climate change in northern Ethiopia

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    This study in northern Ethiopia investigated local people's perception of climate change and the role of indigenous silvopastoralism in adaptation to that change. Two hundred and forty respondents participated in a questionnaire survey and group discussions. Local communities perceive climate...
  8. A rapid assessment of species-specific bird strike risk at the Kotoka International Airport in Accra, Ghana

    A rapid assessment of species-specific bird strike risk at the Kotoka International Airport in Accra, Ghana

    Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology
    The Kotoka International Airport in Accra, the capital city of Ghana, has in recent years been confronted with increased presence of birds posing great challenges to aviation safety due to a high risk of bird strikes. As part of measures...
  9. Conservation Tillage Systems for Dryland Farming: On-Farm Research and Extension Experiences

    Conservation Tillage Systems for Dryland Farming: On-Farm Research and Extension Experiences

    Item type: Journal Article • Journal: East African Agricultural and Forestry Journal
    Conservation tillage covers a wide spectrum of production systems, ranging from zero-tillage systems to reduced tillage systems, using various forms of traction; manual, animal or tractor. Each conservation tillage system forms part of, and interacts with, the prevailing farming system...
  10. A Zariski-local notion of F-total acyclicity for complexes of sheaves<xref ref-type="fn" rid="FN0000"/>

    A Zariski-local notion of F-total acyclicity for complexes of sheaves<xref ref-type="fn" rid="FN0000"/>

    Item type: Journal Article • Journal: Quaestiones Mathematicae
    We study a notion of total acyclicity for complexes of flat sheaves over a scheme. It is Zariski-local—i.e. it can be verified on any open affine covering of the scheme—and for sheaves over a quasi-compact semi-separated scheme it agrees with...