La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	World population, trends and conservation status of the Aquatic Warbler Acrocephalus paludicola (1999)
Auteurs :	Aquatic Warbler Conservation Team, Auteur
Type de document :	Article
Dans :	Vogelwelt (Die) (120(2) 1999)
Article en page(s) :	65-85
Langues:	Anglais
Résumé :	The Aquatic Warbler is a globally threatened species which breeds in Belarus, Germany, Hungary, Lithuania, Poland, Russia and Ukraine. The European population is estimated at 13,500-21,000 singing male (1997/98), with major parts of the population in Belarus, Poland and Ukraine. It is possible that there exists another isolated population of several thousand birds (up to 22,000 birds or 11,000 male) in western Siberia, but reliable data are lacking at the moment. The Aquatic Warbler is a specialist of large open sedge and Cladium fen mires and has suffered a severe decline over its whole range due to habitat loss. Within the current core area in E-Poland and the Belarusian and Ukrainian Polessye, the area of suitable fen mires has declined by 80-90 % within the past 30 years. Currently the direct destruction of habitat has slowed down, but habitat loss due to vegetation succession caused by abandonment of traditional farming practices and alterations of the hydroregime is accelerating. The remaining Aquatic Warbler population is highly vulnerable due to its concentration in only a few large mire tracts. There are less than 40 permanent breeding areas with more than

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