La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Survey trends of North American shorebirds: population declines or shifting distributions?
Auteurs :	Jonathan Bart, Auteur ; STEPHEN Brown, Auteur ; Brian Harrington, Auteur ; R. I. Guy Morrison, Auteur
Type de document :	Article
Dans :	Journal of Avian Biology (38(1) JAN 2007)
Article en page(s) :	73-82
Langues:	Anglais
Résumé :	We analyzed data from two surveys of fall migrating shorebirds in central and eastern North America to estimate annual trends in means per survey and to determine whether trends indicate a change in population size or might have been caused by other factors. The analysis showed a broad decline in means per survey in Atlantic Canada and the northeastern United States (North Atlantic region). For example, 9 of 9 significant trends in this region were

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