Graham Von Maltitz

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Jatropha is the latest in a list of “miracle crops” that have been promoted in southern Africa for their perceived development benefits. This was based on promises of high yields, low water requirement, ability to grow on marginal land and lack of competition with food. In less than 10 years, tens of thousands of hectares were acquired for jatropha(More)
The Global Drylands Observing System proposed in this issue should reduce the huge uncertainty about the extent of desertification and the rate at which it is changing, and provide valuable information to scientists, planners and policy-makers. However, it needs careful design if information outputs are to be scientifically credible and salient to the needs(More)
Satellite-derived phenology allows monitoring of terrestrial vegetation on a global scale and provides an integrative view of the regional landscape-scale processes. Understanding these seasonal phenological patterns is essential to (i) the characterization and classification of vegetation, (ii) studying the impact of climate change [1], and influence of(More)
How to cite this article: Blanchard R, Richardson DM, O’Farrell PJ, Von Maltitz GP. Biofuels and biodiversity in South Africa. S Afr J Sci. 2011;107(5/6), Art. #186, 8 pages. doi:10.4102/sajs. v107i5/6.186 The South African government, as part of its efforts to mitigate the effects of the ongoing energy crisis, has proposed that biofuels should form an(More)
Vegetation biomes are traditionally mapped in one of two ways: (i) top-down – based on vegetation structural types and their association with regional climate [1], or (ii) bottom-up – by grouping vegetation types together based on composition and structure measured at the plot level [2]. There is a huge discrepancy between the scales and the measurement of(More)
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