La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Surveying waterbirds away from major waterbodies: implications for waterbird population estimates in Great Britain (2006)
Auteurs :	Sarah F. Jackson, Auteur ; Graham E. Austin, Auteur ; Michael J. S. Armitage, Auteur
Type de document :	Article
Dans :	Bird Study (53 JUL 2006)
Article en page(s) :	105-111
Langues:	Anglais
Résumé :	Capsule Population size estimates of widely dispersed waterbird species in Great Britain were improved using a stratified random sample of habitats in addition to standard counts of known wetlands. Aims To improve the estimation of national population sizes for species less well covered by the UK Wetland Bird Survey (WeBS) using a stratified random sampling approach. Methods Observers recorded habitat type and waterbird numbers within a stratified random sample of 1-km grid squares across Great Britain. For

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