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Tag: Biodiversity

Distribution of polar bear populations in the Arctic
Worldwide there are thought to be 22,000-27,000 polar bears (Ursus maritimus)in 20 separate populations. They can be found in the United States, Canada, Russia, Greenland and on the Arctic islands of Norway.
04 Oct 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
How much sea ice will be left in 2050?
Climate simulations suggest continued rapid loss of Arctic sea-ice. The observations of indigenous peoples also indicate unprecedented change. The loss of the Arctic sea-ice will have vast impacts on climate, livelihoods...
21 Mar 2006 - by Author: K. Dixon & H. Vahlenkamp, October 1998, December 1999, February 2004; Layout: Petter Sevaldsen (UNEP/GRID-Arendal)
Defining and measuring biodiversity
No data
28 Mar 2006 - by Bounford.com and UNEP/GRID-Arendal
Status of terrestrial ecoregions - threats and vulnerabilities
In a World Wildlife Fund for Nature (WWF) study, experts identified 200 periority terrestrial ecoregions - defined as large scale ecological systems with characteristic flora, fauna and climate with high priority for con...
01 Nov 2006 - by Hugo Ahlenius, UNEP/GRID-Arendal
Namibia case study locator map, with protected areas network
Namibia case study locator map, with protected areas network
11 Jul 2006 - by Hugo Ahlenius, UNEP/GRID-Arendal
Routes for exports of illegally logged ramin timber in Indonesia
Ramin, Gonystylus sp., is a group of tropical hardwood species in South East Asia, listed as vulnerable on the IUCN red list, and the trade of the timber is regulated under CITES. Illegal logging of these species is comm...
22 Jan 2007 - by Hugo Ahlenius, UNEP/GRID-Arendal
Extent of deforestation in Borneo 1950-2005, and projection towards 2020
The tropical lowland and highland forests of Borneo, including vast expanses of rainforest, have decreased rapidly after the end of the second world war. Forests are burned, logged and clear, and commonly replaced with a...
01 Nov 2007 - by Hugo Ahlenius, UNEP/GRID-Arendal
Tigris and Euphrates rivers fragmentation
It has been predicted that access to water will create conflict between countries. In Africa, central Asia, west Asia and the Americas, some countries are already arguing fiercely over access to rivers and inland seas, a...
26 Jan 2009 - by Philippe Rekacewicz
Fish diversity in freshwater systems
Although freshwater ecosystems such as rivers, lakes and wetlands occupy less than 2% of the earth’s total land surface, they provide a wide range of habitats for a significant proportion of the world’s plant and animal ...
26 Jan 2009 - by Philippe Rekacewicz
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
Damming the world
The construction of large dams - defined as those with walls at least 15 metres high - has increased significantly over the past 50 years. The average height of new dams, estimated at 30-34 m from 1940-1990, increased to...
26 Jan 2009 - by Phillippe Rekacewicz, February 2006
Industrial areas and seasonal zones of oxygen depleted waters
This graphic illustrates the strong link between areas with high densities of industrial activity and zones of seasonally oxygen-depleted waters. There is a strong link between areas with high densities of industrial ac...
26 Jan 2009 - by Phillipe Rekacewicz, (Le Monde diplomatique) February 2008
Marine species diversity
Limited information is available on species diversity and the condition of coastal and marine ecosystems (Burke et al., 2001). There is growing evidence that many marine species are less widely distributed, and therefore...
26 Jan 2009 - by World Resource Institute (WRI), Washington Dc, 1998, based on data from UNEP-WCMC.
Ecological Footprint and Biodiversity
No data
06 Oct 2009 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Economic Worldwide Benefits Coming From Biodiversity
No data
06 Oct 2009 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Species Turnover
Change in the initial species richness in 2005 relative to 2001-2005 average (high-range climate change scenario). Studies predict species invasion will be profound in the Arctic and Southern Oceans. Among others these c...
06 Oct 2009 - by Riccardo Pravettoni, UNEP/GRID-Arendal
South Africa biomes
South Africa is blessed with a rich abundance of biodiversity and a wide range of ecosystems and biomes. Among them are the wetland ecosystems, which occupy approximately seven per cent of South Africa’s total land area....
21 Jun 2011 - by Riccardo Pravettoni, UNEP/GRID-Arendal
National environmental legislation, South Africa
The Working for the Environment programmes (water, fire, wetland, coast) are all supported by important national environmental legislation including the National Environmental Management: Biodiversity Act, the Disaster M...
21 Jun 2011 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Invasive alien plant species potential distribution
Alien plant species pose a major threat to South Africa’s native biodiversity. It is estimated that more than 9 000 plant species have been introduced so far. Of these, about 198 species are deemed invasive, covering 10 ...
21 Jun 2011 - by Riccardo Pravettoni, UNEP/GRID-Arendal
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