98 items matching your search terms.
Filter the results.
Item type












































































New items since



Sort by relevance · date (newest first) · alphabetically
Daviz Visualization Nitrate concentrations in groundwater between 1992 and 2011 in different geographical regions of Europe.
Located in Data and maps Data visualisations
Daviz Visualization Nitrate concentrations in rivers in different geographical regions of Europe.
Located in Data and maps Data visualisations
Daviz Visualization Nitrate concentrations in rivers between 1992 and 2011 in different sea regions of Europe.
Located in Data and maps Data visualisations
Daviz Visualization Nitrate concentrations in rivers between 1992 and 2011 in different geographical regions of Europe.
Located in Data and maps Data visualisations
Daviz Visualization Nitrate concentrations in rivers in different sea regions of Europe.
Located in Data and maps Data visualisations
Figure Northward shift and changes in occurrence of selected freshwater species
This indicator shows the evolution of the number of observations of Southern European dragonfly species in Flanders. Due to climate change the number of records of Southern European dragonflies increases in Flanders. Some species that were only occasional visitors in the past, such as Lestes barbarus now have permanent populations.
Located in Data and maps Maps and graphs
Figure Troff document Number of introduced non-native freshwater species of various taxa which have an ecological effect
Located in Data and maps Maps and graphs
Figure application/x-troff-ms Number of species in the pan-European region listed as "worst invasive alien species threatening biodiversity in Europe" occurring in terrestrial and freshwater ecosystems
Located in Data and maps Maps and graphs
Figure Number of the listed 'worst' terrestrial and freshwater invasive alien species threatening biodiversity in Europe
The numbers on the map indicate how many species from the list are present in each country. Of the list of 163 'worst' invasive alien species', 34 are present in Portugal.
Located in Data and maps Maps and graphs
Indicator Assessment Nutrients in freshwater
Since 2005, average nitrate concentrations in European groundwater have declined and in 2011, the mean concentration had almost returned to the 1992 level. The average nitrate concentration in European rivers declined by 0.03 milligrams per liter of nitrogen (mg N/l) (0.8%) per year over the period 1992 to 2012. The decline in nitrate concentration reflects the effect of measures to reduce agricultural inputs of nitrate, as well as improvements in wastewater treatment. Average orthophosphate concentration in European rivers has decreased markedly over the last two decades (0.003 milligrams per liter of phosphorous (mg P/l) or 2.1% per year). Also, average lake phosphorus concentration decreased over the period 1992-2012 (0.0004 mg P/l, or 0.8% per year). The decrease in phosphorus concentration reflects both improvements in wastewater treatment and the reduction of phosphorus in detergents.
Located in Data and maps Indicators Nutrients in freshwater
European Environment Agency (EEA)
Kongens Nytorv 6
1050 Copenhagen K
Denmark
Phone: +45 3336 7100