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Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Evaluation of IUCN spatial distribution metrics for a migratory species, Fraser River Sockeye salmon
Auteurs :	Louise de Mestral, Auteur ; Michael J. Bradford, Auteur
Type de document :	Article
Dans :	Biological Conservation (173 MAY 2014)
Article en page(s) :	53-59
Langues:	Anglais
Résumé :	The International Union for Conservation of Nature (IUCN) has developed criteria to assess extinction risk; the Committee on the Status of Endangered Wildlife in Canada (COSEWIC) is an independent agency that assesses the vulnerability of Canadian species using IUCN criteria. Criterion B uses extent of occurrence, area of occupancy, and number of locations to evaluate risks associated with restricted spatial distribution in conjunction with several subcriteria. Concerns have been expressed about the use of these distribution metrics for migratory aquatic species as they often have naturally restricted distributions that change at different life stages. The conservation status of Sockeye salmon (Oncorhynchus nerka) of the Fraser River, British Columbia, Canada is currently being assessed and distribution metrics have been estimated. We compared metrics for Sockeye salmon to similar values for

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