Historical examination of the status of large mammals in Aragon, Spain

摘要: Summary. - During the last century, human activities have promoted large changes in habitats, leading to abundance and composition of mammal communities. Some species been favoured intentionally (specially those with high economic importance), or unintentionally (Le. opportunistic species), introduced (as some livestock persecuted that affect game). In this paper, we show explain community Aragon, a northeastern Spanish area where there extinctions (lynx, Lynx sp.); introductions (moufflon, Ovis ammon; fallow deer, Dama dama); reintroductions (red Cervus elaphus); particularly natural expansions (wild boar, Sus scrota ; roe Capreolus capreolus red deer; Pyrenean chamois, Rupicapra pyrenaica pyrenaica). taxa are currently almost extinct (brown bear, Ursus arctos; ibex, Capra pyrenaica) others recovering after getting close extinction (wolf, Canis lupus). Three interconnected causes may clear increment ungulates our study area: (1) abandonment rural activities, (2) subsequent decrease livestock, (3) increase forest habitats. None below 150 % their range 19th century. The setting up hunting reservations design legislation also contributed observed changes. Traditionally, predators not by while compensatory protection measures carried out scarce came too late. While these probably area, remaining occupy less than one fourth former need urgent conservation for recover.