Study

Tradeoffs in the Rehabilitation of a Succulent Karoo Rangeland

  • Published source details Hanke W., Wesuls D., Münchberger W. & Schmiedel U (2015) Tradeoffs in the Rehabilitation of a Succulent Karoo Rangeland. Land Degradation and Development, 26, 833-842

Actions

This study is summarised as evidence for the following.

Action Category

Add manure to soil

Action Link
Shrubland and Heathland Conservation

Plant individual plants

Action Link
Shrubland and Heathland Conservation

Spread clippings

Action Link
Shrubland and Heathland Conservation
  1. Add manure to soil

    A replicated, randomized, controlled study between 2007 and 2011 in a karoo shrubland in Richtersveld, South Africa (Hanke et al. 2015) found that adding manure to increase colonisation increased plant cover and the number of plant species. After three years, plant cover of areas where manure was added (7%) was higher than that in areas where manure was not added (4%). Similarly, the number of plant species in areas where manure was added (11 species) was higher than in areas where manure was not added (7 species). Five 1 ha blocks were divided using a fence to exclude cattle. In each block goat and sheep manure was spread in one 10 m x 10 m plot while another plot was left without manure addition. Vegetation in each 10 m x 10 m plot was assessed annually between 2008 and 2011.

  2. Plant individual plants

    A replicated, randomized, controlled study between 2007 and 2011 in a karoo shrubland in Richtersveld, South Africa (Hanke et al 2015) found that planting of Brownanthus pseudoschlichtianus plants increased plant cover but not the number of plant species. After three years, the plant cover of areas where B. pseudoschlichtianus plants were planted (8%) was higher than that in areas where there was no planting (4%). The number of plant species in areas where B. pseudoschlichtianus plants were planted (8 species) was not significantly different from areas where shrubland plants were not planted (7 species). Five 1 ha blocks were divided using a fence to exclude cattle. In each block B. pseudoschlichtianus one 10 m x 10 m plot while another plot was left without addition of plants. Vegetation in each 10 m x 10 m plot was assessed annually between 2008 and 2011.

  3. Spread clippings

    A replicated, randomized, controlled study between 2007 and 2011 in a karoo shrubland in Richtersveld, South Africa (4) found that spreading branches of the shrub Brownanthus pseudoschlichtianus on overgrazed plots did not increase plant cover or the number of plant species. After three years, plant cover of areas where shrub branches were spread (3%) did not differ significantly from areas where branches were not spread (4%). Similarly, the number of plant species in areas where shrub branches were spread (6 species) did not differ significantly from areas where branches were not spread (7 species). Five 1 ha blocks were divided using a fence to exclude cattle. In each block branches from B. pseudoschlichtianus were spread in one 10 m x 10 m plot while another plot was left with no branches spread. Vegetation in each 10 m x 10 m plot was assessed annually between 2008 and 2011.

Output references

What Works in Conservation

What Works in Conservation provides expert assessments of the effectiveness of actions, based on summarised evidence, in synopses. Subjects covered so far include amphibians, birds, terrestrial mammals, forests, peatland and control of freshwater invasive species. More are in progress.

More about What Works in Conservation

Download free PDF or purchase
The Conservation Evidence Journal

The Conservation Evidence Journal

An online, free to publish in, open-access journal publishing results from research and projects that test the effectiveness of conservation actions.

Read the latest volume: Volume 18

Go to the CE Journal

Subscribe to our newsletter

Please add your details if you are interested in receiving updates from the Conservation Evidence team about new papers, synopses and opportunities.

Who uses Conservation Evidence?

Meet some of the evidence champions

Endangered Landscape Programme Red List Champion - Arc Kent Wildlife Trust The Rufford Foundation Save the Frogs - Ghana Bern wood Supporting Conservation Leaders National Biodiversity Network Sustainability Dashboard Frog Life The international journey of Conservation - Oryx British trust for ornithology Cool Farm Alliance UNEP AWFA Butterfly Conservation People trust for endangered species Vincet Wildlife Trust