Digitalna knjižnica

Outdoor recreation is increasing in popularity throughout the United States. Heretofore, many believed that nonconsumptive outdoor recreation was an environmentally benign activity. Increasing evidence, however, indicates that these activities are, in fact, not benign. On the contrary, data suggest that outdoor recreation can affect wildlife individuals, populations, and communities. For example, a recent survey of factors responsible for the decline of federally listed threatened and endangered species finds that outdoor recreation is the second leading cause.

We discuss seven recreational impacts on biodiversity in wilderness areas. These include: 1) construction of trails, 2) trampling of vegetation and soils on trails and campsites, 3) collection and burning of wood in campfires, 4) water pollution associated with camping activities, 5) unintentional harassment of animals, 6) hunting, fishing, and associated management programs, and 7) grazing by processes and functions of ecosystems. The activities which have caused the greatest impact on diversity at a regional scale are fishing, hunting and associated management practices. None of these perturbations, however, have been studied in insufficient detail to assess their long-term impact.

Alpinizmu se je posvečal od 1969 in se mu povsem podredil. Uvrstil se je med najuspešnejše slovenske alpiniste svoje generacije. Opravil je nad 350 vzponov vseh težavnostnih stopenj po Evropi, Afriki in Severni Ameriki. Veliko je plezal sam, izvedel več kot 30 prvenstvenih vzponov doma in na tujem, nekaj zahtevnih zimskih ponovitev in več ekstremnih smučarskih spustov. Med najpomembnejšimi plezalskimi dosežki sta na primer: prva zimska ponovitev Trikota in prvenstveni vzpon (Jernejev steber) v severni steni Dolgega hrbta, Salathe v južni steni El Capitana (ZDA). Bil je med redkimi na svetu, ki so se povzpeli na tri osemtisočake: Makalu (1975), Gašerbrum (1977) in Everest (1979), vse po novih prvenstvenih smereh.