| Titre : | Cost-effective abundance estimation of rare animals: Testing performance of small-boat surveys for killer whales in British Columbia |
| Auteurs : | Rob Williams, Auteur ; Len Thomas, Auteur |
| Type de document : | Article |
| Dans : | Biological Conservation (142(7) JUL 2009) |
| Article en page(s) : | 1542-1547 |
| Langues: | Anglais |
| Résumé : | Top predators are often rare, subject to anthropogenic mortality, and possess life-history traits that make them inherently vulnerable to extinction. IUCN criteria recognise populations as Critically Endangered when abundance is |



