La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Influence of agricultural practice and predation on the reproductive success of Lapwings Vanellus vanellus in the "Stollhammer Wisch" (District Wesermarsch, Lower Saxony).
Auteurs :	Sven Junker, Auteur ; Rainer Ehrnsberger, Auteur ; Heinz Duettmann, Auteur
Type de document :	Article
Dans :	Vogelwelt (Die) (126(4) 2005)
Article en page(s) :	370-372
Résumé :	Nest monitoring data (n = 146) and radiotelemetric data (n = 156) from the period 2001-2003 were analysed to investigate the influence of the current agriculture practice and predation on the reproductive success of Lapwings in a coastal grassland area (Stollhammer Wisch) that is managed under agri-environment schemes. Hatching and fledging success differed significantly I between years. High losses of clutches and chicks in 2001 caused a reproductive success that was below the level required for a stable population. In the following years the survival of clutches and chicks increased, and Lapwings successfully raised more than 0.8 chicks/pair. With regard to the causes of nest failure and chick loss, predation was the most important factor. In contrast, losses of both nests and chicks caused by agricultural measures remained low over the whole period.

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