La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Trends of migratory waterbirds in the German Wadden Sea from 1987/1988 to 2001/2002.
Auteurs :	Jan Blew, Auteur ; Klaus Guenther, Auteur ; Peter Suedbeck, Auteur
Type de document :	Article
Dans :	Vogelwelt (Die) (126(2) 2005)
Article en page(s) :	99-125
Résumé :	The German Wadden Sea at the North Sea coast of Lower-Saxony and Schleswig-Holstein is a staging area for more than 4 Million migratory waterbirds of the East-Atlantic Flyway; many of those breed in the Arctic and / or overwinter as far South as tropical Africa. Since 1980 most German Wadden Sea sites have been counted at least two times per year during internationally synchronous counts (January and in another month of the year), many of them monthly and - since 1987 - many others in selected spring-tide Counting areas every 14-15 days throughout the year. For the first time the migratory bird counts of the German Wadden Sea have been compiled into one database to calculate numbers and trends of 34 species. Among the 34 species considered here for the period 1987-2002, four show a positive trend, 14 show a negative trend, and of

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