- Title
- Modelling the sustainable harvest of Sclerocarya birrea subsp. caffra fruits in the South African lowveld
- Creator
- Emanuel, P L
- Creator
- Shackleton, Charlie M
- Creator
- Baxter, Jeremy
- Subject
- To be catalogued
- Date Issued
- 2005
- Date
- 2005
- Type
- text
- Type
- article
- Identifier
- http://hdl.handle.net/10962/181312
- Identifier
- vital:43718
- Identifier
- xlink:href="https://doi.org/10.1016/j.foreco.2005.03.066"
- Description
- Levels of commercialization, size class profile and fruit production of Sclerocarya birrea (marula) trees were studied in the Bushbuckridge region of South Africa. A stage-based population matrix model was used to estimate the sustainable yield for S. birrea fruit. The trees begin to bear fruit at an average size of 42.8 cm in circumference and this relates to an approximate age of 19 years. For a stable size class profile, the population growth rate, λ, was 1.1828758. The observed size class profile did not conform to the stable stage size class profile, obtained from the model. Thus, it was not possible to predict the state of the observed population. Using the model, it was estimated that 92% of fruit could be removed without impacting the current population profile. The management of other more destructive forms of S. birrea resource use (such as bark or firewood harvesting), however, do need to be monitored to limit negative impacts on the population that may reduce fruit availability for regeneration or cropping.
- Format
- computer
- Format
- online resource
- Format
- application/pdf
- Format
- 1 online resource (13 pages)
- Format
- Publisher
- Elsevier
- Language
- English
- Relation
- Forest Ecology and Management
- Relation
- Emanuel, P.L., Shackleton, C.M. and Baxter, J.S., 2005. Modelling the sustainable harvest of Sclerocarya birrea subsp. caffra fruits in the South African lowveld. Forest Ecology and Management, 214(1-3), pp.91-103
- Relation
- Forest Ecology and Management volume 214 number 1-3 p. 91 2005 0378-1127
- Rights
- Publisher
- Rights
- Use of this resource is governed by the terms and conditions of the Elsevier Terms and Conditions Statement (https://www.elsevier.com/legal/elsevier-website-terms-and-conditions)
- Rights
- Closed Access
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Collections
Baxter, Jeremy (Mr)
RU Department of Statistics
Shackleton, Charles Michael (Distinguished Prof)
RU Department of Environmental Science
SDG 11. Sustainable Cities and Communities
SDG 15. Life On Land
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