Graphics Library >> global

Region: global

River runoff by continent, 1921-1985
River runoff represents the accumlated water, from preciptation and meltwater, that feeds into rivers that feeds into seas. The estimated annual figures in this graphic is what volume of water that ends up in the World O...
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
River fragmentation and flow regulation
This graphic shows the number of new dams that were under construction in 1998. It also indicates the areas which are most affected by river channel fragmentation and flow regulation. River fragmentation is defined as th...
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Causes of sea level rise from climate change
A significant sea level rise is one of the major anticipated consequences of climate change. This graphic explains the causes of sea level change according to the Intergovernmental Panel on Climate Change (IPCC). It expl...
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Nitrate in major rivers
Considering the data for all the rivers at the continental level, there has been little change in nitrate (NO3-N) concentrations between the two decades under comparison. Changes in the median value were not statisticall...
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Regional trends in biochemical oxygen demand (BOD)
Biochemical oxygen demand is an indicator of the organic pollution of freshwater. Alkalinity (concentration of calcium carbonate or CaCO3) is another indicator of freshwater quality. These graphics compare the concentrat...
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Water consumption - top countries
Freshwater use is partly based on several socio-economic development factors, including population, physiography, and climatic characteristics. This graphic illustrates the world's top 20 water consumers per capita, in c...
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Urban water cycle
This graphic illustrates the impact of human activity on groundwater. It shows that groundwater is obtained from periurban wellfields and urban wells, then used and disposed of as wastewater through pluvial drainage, pip...
17 May 2005 - by Delphine Digout, UNEP/GRID-Arendal
Trends in fisheries - freshwater and marine capture fishery
The harvest of freshwater fish is likely to increase either through capture fisheries or aquaculture (otherwise known as 'fish farming'). This graphic shows inland capture fisheries trends at the national level for 1984 ...
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Distribution of coral, mangrove and seagrass diversity
Similar to corals, the region of greatest mangrove diversity is in Southeast Asia, particularly around the Indonesian Archipelago (Burke et al., 2001). There are three distinct areas of seagrass diversity in the Pacific ...
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Species diversity in the world's seas
There is growing evidence that many marine species are less widely distributed, and therefore more vulnerable to extinction, than previously thought. This graphic shows the diversity of marine mammals, sharks, molluscs, ...
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Human activities leading to coastal degradation
Physical alteration and destruction of habitats are now considered one of the most important threats to coastal [and marine] areas. This graphic shows the extent to which twelve different human activities cause environme...
17 May 2005 - by Delphine Digout, UNEP/GRID-Arendal
Calcium levels in major rivers
This graphic shows the average calcium levels, in milligrams per litre, at major river mouths for the time periods 1976 to 1990 and 1991 to 2000. The graphic also shows the changes in average calcium levels between these...
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
carbon_cycle
About carbon_cycle
17 May 2005 - by Not specified
Threats to the World's coral reefs
Major observed threats to the world's coral reefs include tourism, poison fishing, overexploitation, sedimentation, coral harvesting, dynamite fishing and pollution. This graphic explains which activities or conditions a...
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Trends and forecasts in water use, by sector
Throughout the 20th century, global water use has increased in the agricultural, domestic and industrial sectors. Evaporation from reservoirs has increased at a slower rate. Projections indicate that both global water us...
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Urban water supply and wastewater on a shallow aquifer
This graphic shows the changes in water supply and wastewater disposal that occur through four stages of growth of a settlement: early settlement; the town becomes a city; the city expands and the city expands further. T...
17 May 2005 - by Delphine Digout, UNEP/GRID-Arendal
DPSIR framework for State of Environment Reporting
The DPSIR framework (Driving Forces-Pressures-State-Impacts-Responses) is used to assess and manage environmental problems. Driving forces are the socio-economic and socio-cultural forces driving human activities, which ...
17 May 2005 - by Delphine Digout, UNEP/GRID-Arendal
Global freshwater withdrawal: agricultural, industrial and domestic Use
This graphic makes it possible to compare water use by the agricultural, industrial and domestic sectors at the national level. The graphic indicates which sectors are the dominant and significant users of water in each ...
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Major river basins of the world
Rivers form a hydrological mosaic, with an estimated 263 international river basins covering 45.3% of the land surface area of the earth, excluding Antarctica. This graphic shows the locations of 26 of the world's major ...
01 Oct 2005 - by Delphine Digout, UNEP/GRID-Arendal
Total global saltwater and freshwater estimates
Estimates of global water resources based on several different calculation methods have produced varied estimates. This graphic illustrates the proportions of saltwater and freshwater that make up the earth's water resou...
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal