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

Abstract: 
The current EU geographical distribution of the species listed in the 1st update (Commission Implementing Regulation 2017/1263) of the Invasive Alien Species (IAS) of Union concern (IAS Regulation 1143/2014) is set, based on the best available knowledge, resulting from an assessment of data aggregated through the European Alien Species Information Network (EASIN) in collaboration with the Competent Authorities of 21 EU Member States. The established spatial baseline is crucial when it comes to tracking new detections of IAS of Union concern in uninfested areas of EU territory in the frame of the IAS Regulation. Thus, the current baseline, together with the baseline distribution of the 37 IAS listed in the first Union list, constitutes an important tool supporting the implementation of the IAS Regulation, and also provides a factual basis for the review of its application.