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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 pH. Thus, alkaline compounds in water, such as bicarbonates, carbonates, an...
26 Jan 2009 - by Philippe Rekacewicz (Le Monde diplomatique), 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
Regional CO2 emissions
World carbon dioxide emissions by region, 1950-2006. Under the terms of the 1992 United Nations Framework Convention on Climate Change (UNFCCC), countries that have contributed the most greenhouse gas emissions have a ...
03 Feb 2010 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Victims and affected people in Pakistan flood, August 2010
Seasonal fooding can occur along all the major watersheds in the Himalayan region (Figure 11–14). The largest problems occur in food prone areas with high population densities. This includes parts of northeast India, ...
15 Feb 2010 - by Riccardo Pravettoni
Recent flood events in the Hindu Kush-Himalaya region
Since Asia comprises a large portion of the World’s popula- tion, and more than 40% of all the foods in the world occur in Asia, a large number of people are affected by disasters (Fig. 14). More than 40% of the peo...
03 Feb 2010 - by Riccardo Pravettoni
Access to water in urban Africa
Improved water sources, defined as “one that is protected from outside contamination” (WHO/UNICEF 2010), is essential for ensuring the health of Africa’s urban dwellers. Although an increasing number of people have acces...
18 Mar 2011 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Population growth in North Sumatra and Aceh 1920-2008
Overall population growth in the region has been very rapid during the past nine decades. In 1920, the human populations of Aceh and North Sumatra provinces were 736,348 and 1,961,678, respectively (Volkstelling 1922). B...
13 Sep 2011 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Hydrogeology
Most of the Sumatran orangutan's forests inland play a key role in ensuring downstream freshwater supplies, since the non-alluvial inland areas of the region tend to have very little or no underlying groundwater resourc...
13 Sep 2011 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Highway threaten Serengeti wildlife
This graph shows proposed commercial roads across the Serengeti and surrounding region in 2010. However, following intense international pressure, the Tanzanian Government announced in 2011 that it will favour an alterna...
15 Nov 2011 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Humpback Whale movements within the South Pacific
Mortality due to entanglement and collisions with ships has been reported within the Southern Hemisphere. To varying degrees these threats are all present in both the Oceania region and the Southern Ocean. The Internati...
15 Nov 2011 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Gender division of labour in agriculture and household activities - Nepal and India
In Nepal, the gender division of labour is highly skewed, especially when agricultural, pastoral and wage labour is combined with household, community and casual labour, and when high rates of men’s out-migration to ur...
05 Dec 2011 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Recent flood events in the HIndu Kush-Himalaya region
Recent studies focus attention on the radically changed flood patterns, including heavy rainfall that leads to landslides and soil erosion. For example, in Nepal women and men have noted increased frequency and damage ca...
05 Dec 2011 - by Riccardo Pravettoni, UNEP/GRID-Arendal
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