Population density in the Baltic Sea drainage basin
The density of people per square kilometers have been calculated from various statistical sources, and displays the situation at approximately 1990. Population, and specifically cities, act as driving forces in regards to eutrophication on the Baltic Sea, primarily through nutrients (nitrogen, phosphorous) released through sewage plants.
04 Oct 2005 - by Hugo Ahlenius, UNEP/GRID-Arendal
Arable land in the Baltic Sea region
Ratio of arable land out of total land use in the Baltic Sea drainage basin. Agriculture is one of the main contributors to the nutrient (in this case, primarily nitrogen) influx into the Baltic Sea, and thus a main driver for the eutrophication problems in the sea. The displays the situation at approximately 1990.
04 Oct 2005 - by Hugo Ahlenius, UNEP/GRID-Arendal
Pasture Land - Baltic Sea drainage basin
Ratio of pasture land total land use in the Baltic Sea drainage basin. Agriculture is one of the main contributors to the nutrient (in this case, primarily nitrogen) influx into the Baltic Sea, and thus a main driver for the eutrophication problems in the sea. The displays the situation at approximately 1990.
04 Oct 2005 - by Hugo Ahlenius, UNEP/GRID-Arendal
Wetlands in the Baltic Sea drainage basin (BALANS)
Percentage of wetlands out of total land area for the Baltic Sea drainage basin. The ratios have been estimated from various sources, and resembles the situation at approximately 2000, and is calculated from the BALANS data.
04 Oct 2005 - by Hugo Ahlenius, UNEP/GRID-Arendal
Wetlands in the Baltic Sea drainage basin
Percentage of wetlands out of total land area (by grid cell) for the Baltic Sea drainage basin. Wetlands acts as buffers in cases such as antropogenic nutrient releases (which leads to eutrophication) and acidification. The ratios have been estimated from various sources, and resembles the situation at approximately 1990.
04 Oct 2005 - by Hugo Ahlenius, UNEP/GRID-Arendal
Land cover - Baltic Sea region
The Baltic Sea region is covered in primarily forested land and crop land, in the taiga and temperate forest regions. Agricultural land is a main driver for nutrient inputs to the Baltic Sea, and thus eutorphication, and is thus relevant. Forest lands acts as a net buffer for nutrients, unless it is heavily diked and/or fertilised.
04 Oct 2005 - by Hugo Ahlenius, UNEP/GRID-Arendal
Baltic Sea drainage basin
This 'basemap' displays the extent of the drainage basin (the boundary for the water that ends up in the Baltic Sea), and the countries in the region. The drainage basin represents all water that drains into the sea, through rivers and ground water.
04 Oct 2005 - by Hugo Ahlenius, UNEP/GRID-Arendal
