Baseline Distribution of Invasive Alien Species of Union Concern

The knowledge of the distribution of regulated invasive alien species (IAS) at European Union level supports the organization of national surveillance systems and monitoring activities, and bridges collaboration on species management between EU Member States across borders and in shared geographical areas.

An updated distribution of species also helps evaluating the efficacy of measures implemented and the reporting obligations on Member States. The baseline constitutes also a factual basis for the review of the application of the IAS Regulation, and for monitoring the achievement of Target 5 of the EU Biodiversity Strategy and other relevant EU policies.

The fruitful collaboration between DG Environment, Member States Competent Authorities and EASIN has led to the preparation of baseline distributions of species of Union Concern under EU Regulation 1143/2014. The baselines are the result of an assessment of occurrence and distribution data aggregated through EASIN submitted for verification to all Member States Competent Authorities.

IAS of Union concern published by the Commission Implementing Reg. 1141/2016


Tsiamis K; Gervasini E; Deriu I; D'amico F; Nunes A; Addamo A; Cardoso AC.

Baseline Distribution of Invasive Alien Species of Union concern.

Ispra (Italy): Publications Office of the European Union; 2017, EUR 28596 EN, doi:10.2760/772692


Maps of baseline distribution of IAS of Union Concern in shapefile format:


IAS of Union concern published by the Commission Implementing Reg. 1263/2017


Tsiamis K; Gervasini E; Deriu I; D'amico F; Katsanevakis S; Cardoso AC.

Baseline distribution of species listed in the 1st update of Invasive Alien Species of Union concern.

Ispra (Italy): Publications Office of the European Union; 2019, EUR 29675 EN, doi: 10.2760/75328 (online)


Maps of baseline distribution of IAS of Union Concern in shapefile format: