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La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

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Titre :	Long-term decline of grassland waders in western Poland
Auteurs :	Lukasz Lawicki, Auteur ; Przemyslaw Wylegala, Auteur ; Andrzej Batycki, Auteur ; Zbigniew Kajzer, Auteur ; Sebastian Guentzel, Auteur ; Michal Jasinski, Auteur ; Robert Kruszyk, Auteur ; Slawomir Rubacha, Auteur ; Michal Zmihorski, Auteur
Type de document :	Article
Dans :	Vogelwelt (Die) (132(2) 2011)
Article en page(s) :	101-108
Résumé :	During the periods 1980-1990 and 2000-2010, surveys on breeding populations of waders have been conducted in the 11 largest wet grassland sites in Western Poland, mainly in the valleys of the big rivers Odra, Warta, Noted, and Obra. Changes in the numbers of breeding pairs between these two periods have been studied for five species: Northern Lapwing Vanellus vanellus, Common Snipe Gallinago gallinago, Black-tailed Godwit Limosa limosa, Eurasian Curlew Numenius arquata, and Common Redshank Tringa totanus. A decline of all five species has been noted during the last 30 years. The most significant decrease concerns Black-tailed Godwit (84.6%) and Eurasian Curlew (74.6%), followed by Northern Lapwing (66.1 %), Common Redshank (57.8 %), and Common Snipe (44.6%) although for the latter on the verge of significance. Besides habitat loss through drainage, agricultural abandonment or intensification, a probable reason for the decline of grassland waders in Western Poland was low breeding success caused by enhanced predation, similar as in other parts of Europe. The results prove the declining trend of these species across Europe.

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