For drylands with low inherent levels of biological productivity, coping with climate change presents particular problems. The world’s drylands cover over 40 % of the global terrestrial area and house more than 2 billion inhabitants MEA, (2005). The world’s poorest people live in these areas and they will be hit hardest by the adverse effects of climate change. The effects will manifest themselves not through increased temperatures per se but rather via changes in hydrological cycles characterised by both increased droughts and paradoxically, increased risks of flooding.

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