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Public services provide cheaper water 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 at a price. That price rises with distance from the utility, as defined by the number of intermediaries between the network and the end consumer. Having a regular supply of clean water piped into the household is the optimal type of provision for human development. Experience suggests that households w...
26 Jan 2009 - by GRID-Arendal
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World fish consumption per capita and per year World fish consumption per capita and per year
World fish consumption per year and per capita.
26 Jan 2009 - by Philippe Rekacewicz
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Total population: access to sanitation 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 their development. Essentially handicapping most sub-Saharan African countries, the map shows some curious trends, such as Romania, which remains far behind all other European countries.
26 Jan 2009 - by Philippe Rekacewicz (Le Monde diplomatique)
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Human actions leading to coastal degradation Human actions leading to coastal degradation
Physical alteration and the destruction of habitats are now considered one of the most significant threats to coastal areas. Half of the world’s wetlands, and even more of its mangrove forests, have been lost over the past century to physical alterations, the major causes being accelerating social and economic development and poor-planning (UNEP, 2002). There are currently about one billion people living in coastal urban areas. It is estimated t...
26 Jan 2009 - by Philippe Rekacewicz (Le Monde diplomatique), February 2006
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World's surface water: evaporation and runoff World's surface water: evaporation and runoff
Because much of the world’s surface water is far from concentrations of human settlements, not all of it is readily usable. Some facts concerning global freshwater concentrations: - It is estimated that the freshwater available for human consumption varies between 12,500 km3 and 14,000 km3 each year (Hinrichsen et al., 1998; Jackson et al., 2001). - Many countries in Africa, the Middle East, western Asia, and some eastern European countries ha...
26 Jan 2009 - by Phillippe Rekacewicz (Le Monde diplomatique), February 2006
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The Mekong River - survival for millions The Mekong River - survival for millions
The Mekong River - survival for millions Following the course of the Mekong River helps to understand the human/river hydrological interdependence. From its source on the Tibetan Plateau it drops 5,000 metres and flows across six countries before reaching its delta. More than a third of the population of Cambodia, Lao PDR, Thailand and Vietnam - some 60 million people - live in the Lower Mekong Basin, using the river for drinking water, food, ir...
26 Jan 2009 - by Philippe Rekacewicz
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World population evolution World population evolution
Trois hypothèses pour l’évolution de la population mondiale : Selon le bureau de la population des Nations unies, la plus vraisemblable est l’hypothèse moyenne : pour les périodes 1995-2000 et 2045-2050, elle prend en compte d’une part, la réduction du nombre d’enfants par femme (de 2,82 à 2,15), et d’autre part, une amélioration de l’espérance de vie à la naissance (de 65 à 76 ans). Le taux d’accroissement naturel tomberait ainsi de ...
26 Jan 2009 - by Philippe Rekacewicz
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The decline of cod in the North Atlantic The decline of cod in the North Atlantic
Graph of the decline of fish stock globally and a map of fish stock in Maritime Canada and the United States.
26 Jan 2009 - by Philippe Rekacewicz
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Dependency ratio in renewable water 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 including central Asia, the Middle East (especially Syria and Iraq), India and Pakistan, and surprisingly, low land countries such as the Netherlands.
26 Jan 2009 - by Philippe Rekacewicz, February 2006
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A World of Salt 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) estimated that: - The total volume of water on earth is 1.4 billion km3. - The volume of freshwater resources is 35 million km3, or about 2.5% of the total volume. Of these, 24 million km3 or 68.9% is in the form of ice and permanent snow cover in mountainous regions, a...
26 Jan 2009 - by Phillippe Rekacewicz, February 2006
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Africa’s rivers and lake basins cross many borders Africa’s rivers and lake basins cross many borders
The below shows the locations of 13 major river basins in Africa.
26 Jan 2009 - by Philippe Rekacewicz (Le Monde diplomatique), 2007
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The contribution of climate change to declining water availability The contribution of climate change to declining water availability
The real concern for the future, in the context of changing patterns of rainfall, is the decrease of run-off water which may put at risk large areas of arable land. The map shows how seriously this issue must be taken, while the forecast indicates that some of the richest arable regions (Europe, United States, parts of Brazil, southern Africa) are threatened with a significant reduction of run-off water, resulting in a lack of water for rain-fed ...
26 Jan 2009 - by Philippe Rekacewicz (Le Monde diplomatique)
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Coastal populations and shoreline degradation Coastal populations and shoreline degradation
Unsurprisingly, the coastal areas with the greatest population densities are also those with the most shoreline degradation. The areas surrounding the Black Sea, the Mediterranean and southern Asia have the highest proportion of altered land, while the coastal zones of the Arctic, northeast Pacific, south Pacific, West and Central Africa, East Africa, the Red Sea/Gulf of Aden, and Kuwait have the highest proportions of least modified land. In o...
01 Oct 2009 - by Phillippe Rekacewicz, February 2006
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Planet index 2007 for marine species population Planet index 2007 for marine species population
The Marine Species Population Index provides an assessment of the average changeover time in the populations of 217 species of marine mammals, birds, reptiles, and fish. The index represents the average value of six regional ocean indices. More pronounced declines are seen in the southern oceans, attributed to the fact that major losses and degradation of marine ecosystems in the industrialized world took place prior to 1970. Marine species are ...
26 Jan 2009 - by GRID-Arendal
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Fish protein world consumption Fish protein world consumption
Consumption of proteins from fish in % of total consumption of animal protein.
26 Jan 2009 - by Phillippe Rekacewicz, February 2006
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Coral reefs at risks Coral reefs at risks
There are two distinct regions in which coral reefs are primarily distributed: the Wider Caribbean (Atlantic Ocean) and the Indo-Pacific (from East Africa and the Red Sea to the Central Pacific Ocean). - The diversity of coral is far greater in the Indo-Pacific, particularly around Indonesia, the Philippines, and Papua New Guinea. Many other groups of marine fauna show similar patterns, with a much greater diversity in the Indo-Pacific region. ...
26 Jan 2009 - by Phillippe Rekacewicz, February 2006
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The coming water scarcity in Africa The coming water scarcity in Africa
In a few years from now, almost all sub-Saharan countries will be below the level at which water supply is enough for all. Even worse, most of them will be in a state of water-stress or scarcity.
26 Jan 2009 - by Philippe Rekacewicz (Le Monde diplomatique), February 2006
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Biological oxygen demand - BOD: 1976-2008 Biological oxygen demand - BOD: 1976-2008
The availability of oxygen is one of the most important indicators of the condition of a water body, because dissolved oxygen, or DO, (the amount of oxygen dissolved in water) is necessary for most aquatic organisms, including fish and invertebrates. Some species have very defined lower limits of DO that they can tolerate. Increases in DO can indicate improvements in water quality, such as has occurred in many parts of the world in the last 30 ye...
26 Jan 2009 - by Phillippe Rekacewicz, February 2006
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Trends in capture fisheries and aquaculture Trends in capture fisheries and aquaculture
The levelling off of the global fisheries catch reflects a growing decline in most major fishing areas. Today, these fishing areas are producing lower yields than in the past, and it is unlikely that substantial increases will ever again be possible (FAO, 2000). Inland and marine aquaculture production grew by about 5% annually during the 1950s and 1960s, by about 8% per year during the 1970s and 1980s, and by some 10% per year during the 1990s ...
26 Jan 2009 - by Philippe Rekacewicz
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Suspended sediment discharge Suspended sediment discharge
Asia exhibits the largest runoff volumes and, therefore, the highest levels of sediment discharge. Due to their high precipitation, the Oceanic Islands have disproportionately high-suspended sediment loads (Gleick, 1993).
26 Jan 2009 - by Philippe Rekacewicz (Le Monde diplomatique), 2008
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