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Environmental information systems
Main pathways of introduction of marine non-indigenous species
Chart (static)
Note: This figure shows the main pathways of introduction of marine Non-Indigenous Species (NIS). Analysis is made at Pan-European level.
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Data sources
Metadata
More info
- Mode of introduction of NIS in European Seas - NOT ON LINE, Hellenic Centre for Marine Research (HCMR)
- Baltic Sea
- Bay of Biscay
- Black Sea
- Mediterranean Sea
- North Sea
- Western Mediterranean
2014
Methodology
Data retrieved from HCMR/EEA ALIEN data base. Percentages were calculated based on the total number of NIS per regional sea for which a pathway could be attributed.
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 %.