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Discharge of selected pollutants Discharge of selected pollutants
Data referring to the Biological Oxygen Demand load (BOD), total suspended solids (TSS), total nitrogen and total phosphorus levels were available for all five of the Caspian countries through the Baseline Inventory Report.
17 Oct 2013 - by GRID-Arendal
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Fertilizer consumption in the Nordic countries, 1980-1996 Fertilizer consumption in the Nordic countries, 1980-1996
The graph shows the consumption of fertilizers in the Nordic countries form 1980 to 1996 with projections to 2006. The fertilizers included are phosphate, Potash and Nitrogen which are the three most important nutrients for crop growth.
13 Feb 2006 - by Philippe Rekacewicz, UNEP/GRID-Arendal
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Mean nutrient concentration in the coast of Romania Mean nutrient concentration in the coast of Romania
Illustration in a set of graphics prepared for a pilot assessment report on the Black Sea drainage basin, for the UNEP Global Impact on Waters Assessment (GIWA). All data and information were prepared in close collaboration with the GIWA Black Sea team and the GIWA secretariat. The graphics were never not used in this form in the final report on the Black Sea, published in 2005.
10 Mar 2006 - by Philippe Rekacewicz, UNEP/GRID-Arendal
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Distribution of pollutant loads in the Black Sea Distribution of pollutant loads in the Black Sea
Illustration in a set of graphics prepared for a pilot assessment report on the Black Sea drainage basin, for the UNEP Global Impact on Waters Assessment (GIWA). All data and information were prepared in close collaboration with the GIWA Black Sea team and the GIWA secretariat. The graphics were not used in this form in the final report on the Black Sea, published in 2005.
01 Oct 2006 - by Philippe Rekacewicz, UNEP/GRID-Arendal
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Global fertilizer consumption Global fertilizer consumption
In recent years, there has been concern that the quantity of mineral fertilizers used in agriculture having adverse effects on the environment. Attention has been drawn to the fact that when nutrients are applied to crops they are not all taken up by the plants immediately. There is also concern that some farmers might be applying inappropriate quantities of fertilizer. The main fertilizers having adverse effects on the environment are nitrate, p...
28 Sep 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
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Phosphate levels in major basins Phosphate levels in major basins
A comparison of the major watersheds between the two decades showed that Northern Europe and North America had lower phosphate concentrations, while the Ganges and Brahmaputra watersheds in South Central Asia had higher concentrations. Nutrient control programmes in municipal and agricultural activities may be key factors in the observed reductions in phosphate concentrations.
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
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Mine and industrial site in Koshkar-Ata, Kazakhstan Mine and industrial site in Koshkar-Ata, Kazakhstan
Much of the area near Koshkar-Ata Lake in Kazakhstan, just off the shore of the Caspian Sea, has been severely polluted due to mining activities of uranium phosphate. The area is also affected from chemical plants and metallurgic industries. The pollutants are quickly making there way to the Caspian Sea.
29 Nov 2007 - by Viktor Novikov, UNEP/GRID-Arendal
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Discharge of selected pollutants Discharge of selected pollutants
Nitrogen and phosphorous represents nutrients that can be seen as pollutants, as large concentations of those increase eutrophication. Nutrients are present in primarily commercial fertilisers and in sewage. A measure of eutrophication is biochemical oxygen demand (BOD), which measures the activity in the water column. High BOD means that there is low water quality (in terms of eutrophication) and high activity of bacteria in the water. This grap...
29 Nov 2007 - by Philippe Rekacewicz, UNEP/GRID-Arendal
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Dissolved phosphate levels: concentrations at river mouths Dissolved phosphate levels: concentrations at river mouths
Phosphorus is naturally present in water, primarily as inorganic and organic phosphates. Phosphates can enter aquatic environments in several ways: from the natural weathering of minerals in the drainage basin, from biological decomposition, or as runoff from human activity in urban and agricultural areas. A comparison of the major watersheds between the two decades showed that northern Europe and North America had lower phosphate concentrations...
26 Jan 2009 - by Phillippe Rekacewicz, February 2006
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Industrial areas and seasonal zones of oxygen depleted waters 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 activity and zones of seasonal oxygen-depleted waters. In recent years there has been an increasing focus on treating and reducing municipal and industrial waste, and on reducing nitrogen levels in agricultural runoff. However, less...
26 Jan 2009 - by Phillipe Rekacewicz, (Le Monde diplomatique) February 2008
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