"This indicator shows trends in the abundance of common birds and butterflies over time across their European ranges."
Retrieved from, http://www.eea.europa.eu/data-and-maps/indicators/abundance-and-distribu..., on 10.04.2015
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The indicator measures emissions of Ammonia (NH3). It also provides information on emissions by sectors (e.g. Industrial processes; Road transport)
Annual trend in release of nutrients into the marine environment as a result of aquaculture practices.
Source: http://www.eea.europa.eu/data-and-maps/indicators/aquaculture-effluent-w..., retrieved on 15-04-2015
The indicator shows the trend in Arctic sea ice extent in March ( the month of sea ice extent maximum) and September (the month of sea ice extent minimum). Retrieved from http://www.eea.europa.eu/data-and-maps/figures/arctic-sea-ice-extent on 08/04/2015