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 changes could result in a significant turnover of species of more than 60% of present biodiversity. This has the potential to disrupt a range of marine ecosystem services including food provisioning.
06 Oct 2009 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Mean annual coastal erosion in arctic Alaska (Beaufort Sea shoreline)
In the Arctic, impacts of climate change will include
increased coastal erosion. For Arctic human
communities impacts are projected to be mixed, with
detrimental impacts expected on infrastructure and
traditional indigenous ways of life in these regions. Food
security for some subsistence systems will be threatened through changes in natural ecosystems.
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, south-central Nepal,
central and southern Pakistan, large parts of Bangladesh and
lower reaches of the large rivers in China. In India around
40 million people are affected by fooding annually and the
damage has been estimated...
15 Feb 2010 - by Riccardo Pravettoni
Working for the Coast
Working for the Coast is a programme initiated under the Social Responsibility Programme, which provides jobs and training for unemployed people in coastal communities to create and maintain a cleaner coastal environment. The programme works towards protecting the coastal ecosystems which are essential in providing food and sustenance for the many people living in urban and rural coastal areas.
21 Jun 2011 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Pressures on the South African coast
Population growth puts pressure on coastal ecosystems. Increased population means growing demand for land for housing and infrastructure, increased use of living resources for food, and more use of available freshwater resources. The negative environmental impacts of the shipping industry also harm the coastal ecosystem. Impacts from shipping include oil spills and the discharge of ballast water and waste into the sea, which affect the quality of...
21 Jun 2011 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Hunting of orangutans
Orangutans are also still regularly killed or captured. This occurs for three main reasons: first, even today some people still hunt orangutans for food, most notably in the non-Muslim parts of North Sumatra. Second, when orangutans enter farms or plantations at the for-est edge, for example to feed on fruit trees or other crops, they are often shot or otherwise killed, and any surviving infant eventually ends up in trade or as someone’s illegal ...
13 Sep 2011 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Global flyways of the six subspecies of Red Knot
The Red Knot is a migratory shorebird that travels up to 20,000 km twice a year from its breeding grounds on
the high Arctic tundra to its southern non-breeding sites. Along with having one of the longest total migrations
of any bird, some populations also fly as much as 8,000–9,000 km between stopover sites in a single flight. As a shellfish-eating specialist avoiding pathogen-rich freshwater habitats, the Red Knot relies on the few large ti...
15 Nov 2011 - by Riccardo Pravettoni, UNEP/GRID-Arendal