The knowledge of the distribution of invasive alien species (IAS) listed as of Union concern at European Union level supports the organization of national surveillance and monitoring systems, bridging collaboration on species management between EU Member States across borders and in shared geographical areas.
An updated knowledge of the 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 invasive alien 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, following the guidance of a protocol.
Magliozzi C; Brugnoni F; Cardoso AC.
Baseline distribution of invasive alien species added to the Union list by Comm. Impl. Reg. (EU) 2025/1422.
Publications Office of the European Union; 2026, EUR 40734 EN, doi:10.2760/5794871
Dataset: https://data.jrc.ec.europa.eu/dataset/86c9ba3f-a18d-4fbb-acbf-6ecb1b806910:
Magliozzi C; Deriu I; Gervasini E; Melone B; D`Amico F; Akuma G; Cardoso AC.
Baseline distribution of invasive alien species added to the Union list by Comm. Impl. Reg. (EU) 2022/1203. Data to benchmark the progress of Regulation (EU) 1143/2014.
Publications Office of the European Union; 2023, EUR 31530 EN, doi:10.2760/166450
Maps of baseline distribution of IAS of Union Concern in shapefile format:
(zip file)
Tsiamis, K; Deriu, I; Gervasini, E; D`amico, F; Katsanevakis, S; Cardoso, AC.
Baseline distribution of invasive alien species added to the Union list in 2019.
Publications Office of the European Union; 2021, EUR 30631 EN, doi:10.2760/68915
Maps of baseline distribution of IAS of Union Concern in shapefile format:
(zip file)
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.
Publications Office of the European Union; 2019, EUR 29675 EN, doi: 10.2760/75328
Maps of baseline distribution of IAS of Union Concern in shapefile format:
Tsiamis K; Gervasini E; Deriu I; Cardoso AC.
Updates on the baseline distribution of Invasive Alien Species of Union concern (2019).
Publications Office of the European Union; 2019, EUR 29726 ΕΝ, doi:10.2760/28412
Maps of baseline distribution of IAS of Union Concern in shapefile format:
Tsiamis K; Gervasini E; Deriu I; D'Amico F; Nunes A; Addamo A; Cardoso AC.
Baseline Distribution of Invasive Alien Species of Union concern.
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: