Traditional practices, infrastructure and development
Indigneous peoples have lived in Arctic for thousands of years, and continue to depend upon the natural resources of the region today. Their traditional subsistence practices include hunting, trapping, fishing and reindeer herding. All of which are conducted in a sustainable manner; that is, in a way that does not lead to long-term or large-scale degredation of the environment.
However, the balance they have achieved with the environment through...
21 Mar 2006 - by Hugo Ahlenius, Philippe Rekacewicz, UNEP/GRID-Arendal
Distribution of Saami dialects
Saami dialects distribution with data from snowchange project. Graphic prepared for a case study in the 2004 edition of Vital Arctic Graphics on reindeer hearding, Saami and climate change in the Barents Region.
21 Mar 2006 - by Philippe Rekacewicz, UNEP/GRID-Arendal
The greening of Niger - trends in vegetation
The Sahel region of Africa, a belt of savanna ecoregion south of the Sahara desert, stretched from coast to coast. This region is not only known for long spells of drought (and desertification), but also from housing some of the World's poorest countries. Recent trends show good signs on the recovery of the region, and the relative vegetation index (NDVI) presented for the country of Niger in this map shows increases in the period from 1982 to 19...
07 Nov 2006 - by Hugo Ahlenius, UNEP/GRID-Arendal
Barents Region, topography and bathymetry
The Barents Region is in the Arctic and covers the area of Western Russia and the northern areas of Finland, Sweden and Norway. The Barents Sea has anaverage depth 230 m, bordered by the shelf edge towards the Norwegian Sea in the west, the island of Svalbard (Norway) in the northwest, and the islands of Franz Josef Land and Novaya Zemlya (Russia) in the northeast and east.
01 Jul 2006 - by Hugo Ahlenius, UNEP/GRID-Arendal
Barents Region, topography and bathymetry
The Barents Region is in the Arctic and covers the area of Western Russia and the northern areas of Finland, Sweden and Norway. The Barents Sea has anaverage depth 230 m, bordered by the shelf edge towards the Norwegian Sea in the west, the island of Svalbard (Norway) in the northwest, and the islands of Franz Josef Land and Novaya Zemlya (Russia) in the northeast and east.
18 Aug 2006 - by Hugo Ahlenius, UNEP/GRID-Arendal
Barents Region, topography and bathymetry
The Barents Region is in the Arctic and covers the area of Western Russia and the northern areas of Finland, Sweden and Norway. The Barents Sea has anaverage depth 230 m, bordered by the shelf edge towards the Norwegian Sea in the west, the island of Svalbard (Norway) in the northwest, and the islands of Franz Josef Land and Novaya Zemlya (Russia) in the northeast and east.
01 Jul 2006 - by Hugo Ahlenius, UNEP/GRID-Arendal
Arctic, topography and bathymetry
The Arctic is extremely diverse in terms of landscapes, varying from pack and drift ice to rugged shores, flat coastal plains, rolling hills and mountains surpassing 6000 metres above sea level (Denali, 6,194 m asl, in sub-arctic and boreal Alaska). The region has rivers and lakes, tundra and the largest forests in the world (the Russian Taiga).
18 Aug 2006 - by Hugo Ahlenius, UNEP/GRID-Arendal
Arctic, topography and bathymetry
The Arctic is extremely diverse in terms of landscapes, varying from pack and drift ice to rugged shores, flat coastal plains, rolling hills and mountains surpassing 6000 metres above sea level (Denali, 6,194 m asl, in sub-arctic and boreal Alaska). The region has rivers and lakes, tundra and the largest forests in the world (the Russian Taiga).
01 Jul 2006 - by Hugo Ahlenius, UNEP/GRID-Arendal
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 to provide irrigation water for local croplands. These diversions dramatically reduced the river inflows, causing the Aral Sea to shrink by more than 50%, to lose two-thirds of its volume, and to greatly increase its salinity. At the current rate of decline, the Aral Sea has the potential to disappear completely by 20...
26 Jan 2009 - by GRIDA
Cereal productivity in sub-Saharan Africa under a projected Intergovernamental Panel on Climate Change (IPCC) scenario
A majority of the population in sub-Saharan African lives in rural areas, where income and employment depend almost entirely on rain-fed agriculture. This population is today at high risk. Sub-Saharan Africa already has a highly variable and unpredictable climate and is acutely vulnerable to floods and droughts. A third of the people in the region live in drought-prone areas, and floods are a recurrent threat in several countries. With climate ch...
26 Jan 2009 - by Philippe Rekacewicz
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, and hydroxides, lower the acidity of the water and increase the pH.
Alkalinity (as CaCO3) was analysed for all sampling stations available at the continental level. Concentrations remained reasonably steady between the two decades ...
26 Jan 2009 - by Philippe Rekacewicz (Le Monde diplomatique), February 2006
