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The disappearance of the Aral Sea
The demise of the Aral Sea in central Asia was caused primarily by the diversion of the inflowing Amu Dar’ya and Syr Dar’ya rivers…
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Public services provide cheaper water
By bringing water to people water resellers extend the coverage of piped water and provide a service with important benefits for households - but…
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Water withdrawal and consumption: the big gap
Freshwater use by continents is partly based on several socio-economic development factors, including population, physiographic, and climatic characteristics. Analysis indicates that: - Annual global…
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Benefits of marine and coastal ecosystems to human wellbeing
Besides the well-known economic value of fisheries, there are several other activities generating significant revenues in coastal and marine areas. Tourism has become one…
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Estimated Residence time of water resources
Estimated Residence time of water resources.
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Water – cooperation or conflict?
History shows that conflicts over water often emerge and give rise to political tensions, but that most disputes are resolved peacefully. However, the absence…
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Dependency ratio in renewable water
The dependency ratio is a good indicator of where tension and conflict over water-sharing and use can occur. The map clearly depicts such areas…
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Freshwater resources: volume by continent
Glaciers and ice caps cover about 10% of the world’s landmass. These are concentrated in Greenland and Antarctica and contain 70% of the world’s…
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Freshwater alkalinity: 1976-2008
Alkalinity is commonly used to indicate a water body’s capacity to buffer against acidity; that is, the ability to resist, or dampen, changes in…
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A World of Salt
Global water type by percentage. Estimates of global water resources based on several different calculation methods have produced varied estimates. Shiklomanov in Gleick (1993)…
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The WWF living planet index for freshwater
'The over-exploitation and mismanagement of fisheries, particularly when combined with other man-made stresses, can lead to the collapse of regional fish faunas. In many…
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Total population: access to sanitation
The 2004 global image sadly shows that the lack of access to clean water remains a burden for the poorest countries, preventing them accelerating…