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Toward a world of thirst ?
Foreword
Executive summary
Water and population
World population evolution
Poor and rich: inequal demographic evolution
Relative demographic weight for each continent
CHAPTER 1: State of the world’s water
The water cycle
Estimated residence time of water resources
A world of salt
World’s surface water: evaporation and runoff
Renewable surface water produced internally
CHAPTER 2: Freshwater resources
Storage, distribution and circulation
Freshwater resources: volume by continent
Africa’s rivers and lake basins cross many borders
River runoff throughout the 20th century
Suspended sediment discharge
Main world’s river basins
Water use and management
Water withdrawal and consumption: the big gap
Trends in global water use by sector
More water evaporates from reservoirs than is consumed by humans
Freshwater use by sector at the beginning of the 2000s
Freshwater use: country profiles
Total population: access to an improved water source
Total population: access to sanitation
Inequity in access to clean water and sanitation
Who will not reach the water and sanitation millennium development goal?
A scarce and competitive resource
Water supply per river basin in 1995 and 2025
Global waterstress and scarcity
Water Scarcity Index
Excessive withdrawal of renewable water resources
Dependency ratio in renewable water
The coming water scarcity in Africa
Water management in urban area
When the city harms its own water resources
Water competition between cities and agriculture
River’s fragmentation
Level of river fragmentation and flow regulation
Damming the world
Water storage capacity for selected countries
Tigris and Euphrates rivers fragmentation
Pollution
Biological oxygen demand - BOD: 1976-2008
Freshwater alkalinity: 1976-2008
Nitrate levels: concentrations at river mouths
Dissolved phosphate levels: concentrations at river mouths
Biodiversity in freshwater
Fish diversity in freshwater systems
The WWF living planet index for freshwater
Water and political conflicts
The disappearance of the Aral Sea
Lake Chad: almost gone
The Mekong River - survival for millions
Water - cooperation or conflict?
Transboundary water governance - averting conflict
Water and health
The spread of cholera 1950-2004
Pricing water
Public services provide cheaper water
Increasing price with volume
CHAPTER 3: Coastal and marine water
Marine biodiversity
Marine species diversity
Coral reefs at risks
Planet index 2007 for marine species population
Economic activities: Fisheries and ecotourism
State of world fisheries and aquaculture
Fishing yield
Trends in capture fisheries and aquaculture
Benefits of marine and coastal ecosystems to human wellbeing
The decline of cod in the North Atlantic
World fish consumption per capita and per year
Fish protein world consumption
Coastal pollution
Industrial areas and seasonal zones of oxygen depleted waters
Human actions leading to coastal degradation
Coastal populations and shoreline degradation
CHAPTER 4: Water and climate change
Increased global water stress
Sea level rise and assessment of the state of the marine environment
Impact of sea level rise in Bangladesh
Impact of sea level rise on the Nile delta
Cereal productivity in sub-Saharan Africa under a projected Intergovernamental Panel on Climate Change (IPCC) scenario
The contribution of climate change to declining water availability
Links
References
About this report
Credits
Disclaimer
Copyright
Impact of sea level rise on the Nile delta
Table of contents
Toward a world of thirst?
Foreword
Executive summary
Water and population
1. State of the world’s water
2. Freshwater resources
Storage, distribution and circulation
Water use and management
A scarce and competitive resource
Water management in urban area
River’s fragmentation
Pollution
Biodiversity in freshwater
Water and political conflicts
Water and health
Pricing water
3. Coastal and marine water
Marine biodiversity
Economic activities: Fisheries and ecotourism
Coastal pollution
4. Water and climate change
Links
References
About this report
Credits
Disclaimer
Copyright
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