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Observed depositions of nitrogen to the North Sea: Located in Data and maps › Maps and graphs
Northward movement of marine species (CLIM 015) - Assessment published Sep 2008: Increases in regional sea temperatures have triggered a major northward movement of warmer-water plankton in the north-east Atlantic and a similar retreat of colder-water plankton to the north. This northerly movement is about 10 o latitude (1 100 km) over the past 40 years, and it seems to have accelerated since 2000. This will have an impact on the distribution of fish in the region. Many species of fish and plankton have shifted their distributions northward. Sub-tropical species are occurring with increasing frequency in European waters and sub-Arctic species are receding northwards. The rate of northward movement of a particular species, the silvery john dory, has been estimated at about 50 km/year. Changes in the geographic distribution of some species of fish have been observed and may affect the management of fisheries. Fisheries regulations in the EU include allocations of quotas based on historic catch patterns, and these may need to be revised.
Located in Data and maps › Indicators › Northward movement of marine species
Nutrients in transitional, coastal and marine waters (CSI 021) - Assessment published Nov 2005: Phosphate concentrations in some coastal sea areas of the Baltic and North Seas have decreased over recent years, but they have remained stable in the Celtic Sea and increased in some Italian coastal areas. Nitrate concentrations have generally remained stable over recent years in the Baltic, North and Celtic Seas but have increased in some Italian coastal areas.
Located in Data and maps › Indicators › Nutrients in transitional, coastal and marine waters
Ministerial Declaration of the Third International Conference on the Protection of the North Sea: Ministerial Declaration of the Third International Conference on the Protection of the North Sea, The Hague, 8 March 1990.
Located in Environmental policy document catalogue
Summary of trends in winter nitrate and phosphate concentration, and N/P ratio in the coastal waters of the North Atlantic (mostly Celtic Seas), the Baltic Sea, the Mediterranean and the North Sea, 1985-2003: Trend analyses are based on time series 1985-2003 from each monitoring station having at least 3 years data in the period 1995-2003 and at least 5 years data in all
Located in Data and maps › Maps and graphs
Summary of trends in winter nitrate and phosphate concentration, and N/P ratio in the coastal waters of the North Atlantic (mostly Celtic Seas), the Baltic Sea, the Mediterranean and the North Sea, 1985-2005: Trend analyses are based on time series 1985-2005 from each monitoring station having at least 3 years data in the period 1995-2005 and at least 5 years data in all
Located in Data and maps › Maps and graphs
Change in winter nitrate and phosphate concentrations in coastal and open waters of the north Atlantic (mostly Celtic Seas), Baltic, Mediterranean (Italian coastal waters only) and North Seas (% of stations, 1985-2004/2005): This is part of the EEA core set indicator 21 (http://themes.eea.europa.eu/Specific_media/water/indicators)
Located in Data and maps › Maps and graphs
Change in colour index in southern North Sea from the 1950s until 2000s: Data are from the Continuous Plankton Recorder
Located in Data and maps › Maps and graphs
North Sea physiography (depth distribution and main currents): Located in Data and maps › Maps and graphs
Spawning stock biomass and fishing pressure for North Sea cod 1963-2002: Located in Data and maps › Maps and graphs

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