La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Comparison of distance sampling and territory mapping methods for birds in four different habitats
Auteurs :	Thomas K. Gottschalk, Auteur ; Falk Huettmann, Auteur
Type de document :	Article
Dans :	Journal of Ornithology (152(2) APR 2011)
Article en page(s) :	421-429
Langues:	Anglais
Résumé :	Distance sampling (DS) and territory mapping (TM) are globally applied bird survey techniques. However, specifically designed studies comparing results of both methods in different habitats in the framework of a scientific experiment have rarely been conducted. To provide a more generalized guidance for the field surveyor, here we evaluated estimates of bird abundances and number of bird species in four different habitats (broad-leaved forest, coniferous forest, open woodland and farmland) in central Germany. Abundances were estimated in parallel by TM and DS in 2006 and 2008, following standard protocols. Detection probability differed significantly among habitats and species. Density estimates by

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