La lontra sta probabilmente tornando in Svizzera, non solo in maniera sporadica, dopo un'assenza durata quasi 30 anni. Lo dimostrano le nuove prove dell'esistenza di cuccioli nei pressi di Berna e l'avvistamento di un esemplare in Engadina.
L'Ufficio federale dell'ambiente, nel comunicato diramato lunedì, informa che è stato costituito un gruppo di lavoro incaricato di studiare una strategia per affrontare le sfide poste dalla presenza di questo selvatico.
L'animale, cacciato soprattutto perché grande divoratore della fauna ittica, era scomparso dal territorio elvetico alla fine degli anni Ottanta, complice anche la distruzione del suo habitat.
ATS/dg
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