Main pathways of introduction of marine non-indigenous species in regional seas of Europe

Figure Created 18 Aug 2014 Published 03 Mar 2015 Last modified 29 Jun 2015, 09:43 AM
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This figure shows the relative importance (%) of the main pathways of introduction of non-indigenous species (NIS) across regional seas of Europe in 2014.

European data


Additional information

Main pathways of introduction are shipping, corridors (i.e. marine and inland), aquaculture, aquarium trade and other. In many cases, it is impossible to identify the introduction pathway. Where more than one pathway of introduction can be attributed, the analysis has considered both modes of introduction. Thus the resulting percentage of introductions per pathway amounts to more than 100 %. 

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