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Region: global

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 a...
26 Jan 2009 - by Philippe Rekacewicz
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...
26 Jan 2009 - by Philippe Rekacewicz
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
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 a...
26 Jan 2009 - by Philippe Rekacewicz, February 2006
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 wat...
26 Jan 2009 - by Phillippe Rekacewicz, February 2006
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
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, w...
26 Jan 2009 - by Philippe Rekacewicz (Le Monde diplomatique)
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 prop...
01 Oct 2009 - by Phillippe Rekacewicz, February 2006
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 regi...
26 Jan 2009 - by GRID-Arendal
Fish protein world consumption
Consumption of proteins from fish in % of total consumption of animal protein.
26 Jan 2009 - by Phillippe Rekacewicz, February 2006
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 o...
26 Jan 2009 - by Phillippe Rekacewicz, February 2006
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
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, inc...
26 Jan 2009 - by Phillippe Rekacewicz, February 2006
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 increase...
26 Jan 2009 - by Philippe Rekacewicz
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
Renewable surface water produced internally
It is difficult to determine the amount of renewable water produced internally from the total renewable water resources (external and internal). However the FAO gives a rather precise definition of this indicator. Intern...
26 Jan 2009 - by GRID-Arendal
Impact of sea level rise in Bangladesh
Impact of sea level rise in Bangladesh. three maps in a time relapse resulting in 18 million people affected, 22,000 km2 of land submerged by flooding.
26 Jan 2009 - by Phillipe Rekacewicz, February 2008
Trends in global water use by sector
The greyband represents in the difference between the amount of water extracted and that actually consumed. Water may be extracted, used, recycled (or returned to rivers or aquifers) and reused several times over. Consum...
26 Jan 2009 - by GRID-Arendal
Main world’s river basins
Reservoirs are artificial lakes, produced by constructing physical barriers across flowing rivers, which allow the water to pool and be used for various purposes. The volume of water stored in reservoirs worldwide is est...
26 Jan 2009 - by Phillipe Rekacewicz, February 2008
Excessive withdrawal of renewable water resources
The countries known to be experiencing stress or scarcity of water per capita are roughly those which are excessively using their renewable water resources (North Africa, Middle-East and central Asia including Afghanista...
26 Jan 2009 - by Philippe Rekacewicz (Le Monde diplomatique), February 2006