Articles by Author: M Timm Hoffman

Search results for M Timm Hoffman

We found 44 results for you
  1. How could herd mobility be used to manage resources and livestock grazing in semi-arid rangeland commons?

    How could herd mobility be used to manage resources and livestock grazing in semi-arid rangeland commons?

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    Pastoralists in Namaqualand, South Africa, use herd mobility to manage livestock and rangeland resources. However, their socioeconomic conditions and ecological landscapes are changing and we explore the options that are available for pastoralists to respond to these changes. This paper...
  2. Water Scarcity, Land Degradation and Desertification in the Mediterranean Region: Environmental and Security Aspects

    Water Scarcity, Land Degradation and Desertification in the Mediterranean Region: Environmental and Security Aspects

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    2009, Springer, PO Box 17, 3300 AA Dordrecht, The Netherlands, 158 pages, softcover, ISBN 978-90-481-2525-8. Price €69.95
  3. The influence of South Africa's post-apartheid land reform policies on bush encroachment and range condition: a case study of Fort Beaufort's municipal commonage

    The influence of South Africa's post-apartheid land reform policies on bush encroachment and range condition: a case study of Fort Beaufort's municipal commonage

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    We examined the effect of changes in land use and land tenure on bush encroachment and vegetation condition. An analysis of aerial photographs from three time steps (1949, 1985 and 2004) was used to document changes in woody plant density...
  4. The development of an expert system for arid rangeland management in central Namibia with emphasis on bush thickening

    The development of an expert system for arid rangeland management in central Namibia with emphasis on bush thickening

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    An online decision support system derived from research and expert knowledge was developed for arid rangeland management in central Namibia. The expert system emphasises the control of bush thickening and is divided into three forms of decisions: adaptive, reactive and...
  5. The impact of land use on woody plant cover and species composition on the Grahamstown municipal commonage: implications for South Africa's land reform programme

    The impact of land use on woody plant cover and species composition on the Grahamstown municipal commonage: implications for South Africa's land reform programme

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    Using an analysis of aerial photographs from 1942, 1985 and 2004 we assessed the impact of changing land tenure and land-use regimes on the cover of thicket vegetation on the Grahamstown commonage. Land-use impacts were examined by comparing plant species...
  6. A century of woody plant encroachment in the dry Kimberley savanna of South Africa

    A century of woody plant encroachment in the dry Kimberley savanna of South Africa

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    Woody plant encroachment is frequent in dry savannas. Grazing is often considered to be a major cause of encroachment in dry savannas because grasses are removed by livestock, leaving bare areas for trees to colonise in wetter years. Earlier experiments...
  7. Bush encroachment in southern Africa: changes and causes

    Bush encroachment in southern Africa: changes and causes

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    Bush encroachment has been recognised in southern Africa since the late nineteenth century. Our review of 23 studies showed that the rate of woody cover change has ranged from −0.131 to 1.275% y−1. Encroachment was most rapid on small protected...
  8. Temperate forest dynamics and carbon storage: a 26-year case study from Orange Kloof Forest, Cape Peninsula, South Africa

    Temperate forest dynamics and carbon storage: a 26-year case study from Orange Kloof Forest, Cape Peninsula, South Africa

    Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science
    Temperate forests are globally important carbon stores that are, in the face of recent improvements in their conservation, likely to increase their storage capacity in the future. Despite this, these ecosystems are poorly understood, especially over longer time periods. To...
  9. Long-term changes in land use, land cover and vegetation in the Karoo drylands of South Africa: implications for degradation monitoring<xref ref-type="fn" rid="FN0000"/>

    Long-term changes in land use, land cover and vegetation in the Karoo drylands of South Africa: implications for degradation monitoring<xref ref-type="fn" rid="FN0000"/>

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    We used several large data sets at a range of temporal and spatial scales to document the land-use/land-cover change (LULCC) dynamics of the semi-arid Succulent Karoo and Nama-Karoo biomes of South Africa. More than 95% of the Karoo is comprised...
  10. Long-term impacts of livestock grazing and browsing in the Succulent Karoo: a 20-year study of vegetation change under different grazing regimes in Namaqualand<xref ref-type="fn" rid="FN0000"/>

    Long-term impacts of livestock grazing and browsing in the Succulent Karoo: a 20-year study of vegetation change under different grazing regimes in Namaqualand<xref ref-type="fn" rid="FN0000"/>

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    This study used a fence-line contrast approach to investigate the long-term impact of high grazing pressure on the vegetation at a site in Namaqualand, South Africa. Forty pairs of permanently marked plots were surveyed in 1996, 2006 and 2016. The...