<P> Water is the underlying tenuous balance of safe water supply, but controllable factors such as the management and distribution of the water supply itself contribute to further scarcity . </P> <P> A 2006 United Nations report focuses on issues of governance as the core of the water crisis, saying "There is enough water for everyone" and "Water insufficiency is often due to mismanagement, corruption, lack of appropriate institutions, bureaucratic inertia and a shortage of investment in both human capacity and physical infrastructure". Official data also shows a clear correlation between access to safe water and GDP per capita . </P> <P> It has also been claimed, primarily by economists, that the water situation has occurred because of a lack of property rights, government regulations and subsidies in the water sector, causing prices to be too low and consumption too high . </P> <P> Vegetation and wildlife are fundamentally dependent upon adequate freshwater resources . Marshes, bogs and riparian zones are more obviously dependent upon sustainable water supply, but forests and other upland ecosystems are equally at risk of significant productivity changes as water availability is diminished . In the case of wetlands, considerable area has been simply taken from wildlife use to feed and house the expanding human population . But other areas have suffered reduced productivity from gradual diminishing of freshwater inflow, as upstream sources are diverted for human use . In seven states of the U.S. over 80 percent of all historic wetlands were filled by the 1980s, when Congress acted to create a "no net loss" of wetlands . </P>

In which region is water scarcity a particular problem