ASSESSING THE RISK OF EXTINCTION FOR THE BROWN BEAR (URSUS ARCTOS) IN THE CORDILLERA CANTABRICA, SPAIN

摘要: The status of the brown bear (Ursus arctos) in Spain has suffered a dramatic decline during last centuries, both area and numbers. Current relict populations are suspected to be under immediate risk extinction. aim our model is attain an understanding main processes mechanisms determining population dynamics Cordillera Cantabrica. We compile knowledge available about bears Cantabrica, northern Spain, perform viability analysis (PVA) diagnose current state support management. specially constructed simulation model, based on long-term field investigations western includes detailed life history data information environmental variations food abundance. method individual-based modeling employed simulate fate individual bears. Reproduction, family breakup, mortalities modeled annual time ...