Détail de l'auteur
Auteur Chris J. Johnson |
Documents disponibles écrits par cet auteur (3)
Ajouter le résultat dans votre panier Affiner la recherche![]()
Article
Chris J. Johnson, AuteurIncreasingly, conservation professionals and regulatory agencies are attempting to identify ecological thresholds that define a point at which populations or communities demonstrate a marked response to human disturbance. Such thresholds may ser[...]![]()
Article
Chris J. Johnson, Auteur ; Don E. Russell, AuteurCaribou and reindeer (Rangifer spp.) are known to respond negatively to human activities. Disturbance stimuli can result in short-term behavioural responses or the abandonment of portions of seasonal range. There is relatively little understandi[...]![]()
Article
Chris J. Johnson, Auteur ; Libby P. W. Ehlers, Auteur ; Dale R. Seip, AuteurHabitat change is a major driver of species distribution and persistence, but there have been few recorded extinction events for terrestrial mammals across Canada. Currently, we are observing the decline, extirpation, and perhaps extinction of s[...]



