1930- aménagement animalintroduction animals arizona askins audrey beavers birdpopulations cas casestudies castors citizenparticipation conservation control endangeredspecies environmentalconservation faune gazelles graywolf history human-wolfencounters loup loups mexicanwolf monitoring nature ontario opinionpublique parrysound parrysoundregion peregrinefalcon politicalaspects protection psychologicalaspects publicopinion rencontresaveclesloups renée régionde réintroduction sauvetage tournay unitedstates wildlifemanagement wildliferecovery wildliferehabilitation wildlifereintroduction wolves yellowstonenationalpark étudede