The results of a bison feasibility study in the Southern Carpathians show that most habitats in the area are very suitable for the bison. The basins of Motrul Sec, Bahna and Sebes rivers each offer over 8000 hectares for the animals – an area big enough for the minimal population patch size for the European bison.
Humans have influenced beaver’s ecological history for centuries. Empires were built on beaver fur trade. Different trends in fashion almost got the species extinct at one time, and unconsciously saved it later when preference moved from fur to silk. More recently, the green revolution consciously safeguarded the species, by promulgating protection laws.