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Indicator: Threat from introduction of new alien animal species



Source: Research Institute for Nature and Forest, VLIZ Alien Species Consortium


Indicator
This indicator shows the cumulative number of alien species. Alien species are species that do not live in Flanders naturally, but were introduced through human activities. When aliens become invasive, they can displace indigenous species. The number of alien species introductions is proportionate to the risk of problems with invasive species.

The data are only partly based on monitoring.



Analysis
Policy goal
Several international treaties (Biodiversity convention, Bird Directive, Convention of Bonn, Convention of Bern, African-Eurasian Migratory Water birds Agreement) disapprove of the introduction of alien species. These directives are not yet translated into Flemish policy.

Trends and distance to target
Between 1800 en 2012 about 250 alien species were found in Flanders.

Expectations
It is expected that the number of biological invasions will continue to rise if policy remains unchanged.


Data manager
Research Institute for Nature and Forest


Contact
Tim Adriaens


Extra attachment
Table for reproduction of graph
Achtergronddocument

Reference
Biodiversity Indicators, 2013. INDICATOREN: Threat from introduction of new alien animal species. Research Institute for Nature and Forest, Brussels. www.natuurindicatoren.be (updated 30-10-2013).

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