Global Assessment Report on Disaster Risk Reduction 2015
Making development sustainable: The future of disaster risk management

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Figure 12.12 Population projected to be living under severe water stress by 2050
(Source: OECD, 2012

OECD (Organisation for Economic Co-operation and Development). 2012,OECD Environmental Outlook to 2050: The consequences of Inaction, Paris: OECD Publishing.. .
Figure 12.13 Projected changes in coastal wetland cover in Texas by 2050
(Source: NOAA (
hectare of coastal wetlands has been estimated at US$33,000 (Constanza et al., 2008

Constanza, R., O. Perez-Maqueo, M.L. Martinez, P. Sutton, S.J. Anderson and K. Mulder. 2008,The value of coastal wetlands for hurricane protection, Ambio, Vol. 37, No. 4: 241-248.. .
Other biodiversity hotspots such as mangrove forests and coral reefs are also degrading at a rapid pace. FAO estimates that the total coastal
mangrove area worldwide declined from 188,000 km2 in 1980 to 152,000 km2 in 2005, a loss of 20 per cent over only 25 years (2007). Coral reefs have been proved to act as buffers to storm surges but are also on the decline. For example, it is estimated that 85 per cent of oyster reefs were
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