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Alien vertebrates in Romania – A review

Abstract:

We provide an updated review regarding the presence of alien vertebrates in Romania (i.e., fish, reptiles, birds, and mammals), taking into consideration both published data and a selection of international, regional and national public online databases. The literature review resulted in a preliminary checklist of 51 alien vertebrates in Romania, of which 41 were validated. The review of international and regional databases resulted in a preliminary checklist of 116 alien vertebrates, of which only 44 were validated after a quality check. The review of the national online databases resulted in a list of seven alien bird species in Romania, all of them valid. The final list contains 46 alien vertebrate species for Romania, of which 17 are established, and 29 are considered casual. Fish are the most abundant group (29 species) representing 63% of all vertebrate species, followed by mammals (eight species), birds (seven species), and reptiles (two species).