Recolonisation or invasion? First insights into the origin of the newly established beaver populations in Bulgaria using eDNA - Bobeva, Aneliya; Nikova, Polina; Borissov, Simeon; Koshev, Yordan; Todorov, Vladimir; Dimitrova, Blagovesta; Ignatov, Milen; Rolečková, Barbora; Uhlíková, Jitka; Kachamakova, Maria (Journal of Vertebrate Biology, 2025)