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Cumulative number of alien species established in freshwater environment in 11 countries

Figure Created 12 Nov 2009 Published 02 Sep 2010 Last modified 29 Nov 2012, 11:39 AM
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How to read the graph: in the 1990s, the total number of freshwater alien species reached around 140 species

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European data

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Additional information

  • The cumulative number of alien species introduced in European freshwater ecosystems has been constantly increasing since the 1900s.
  • However, this increase is slowing down for freshwater species (EEA, 2009).
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