La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Changes in the distribution of the Lapwing Vanellus vanellus in the district of Soest (Northrhine Westphalia) in the period 1972-2005
Auteurs :	Arne Hegemann, Auteur ; Petra Salm, Auteur ; Birgit Beckers, Auteur
Type de document :	Article
Dans :	Vogelwelt (Die) (129(1) 2008)
Article en page(s) :	1-13
Résumé :	The Lapwing and most other farmland birds belong to the most threatened bird species in Germany and western Europe. Although the decline of the breeding population is beyond doubt, data on population size and population development in large areas outside (managed) nature reserves are rate. Here, we show the population trend and the population size of Lapwings in the district of Soest (Northrhine Westphalia, Germany) based on five counts in the years 1972/73, 1989, 1997, 2003, and 2005. In 1972 and 1989, the occurrence of Lapwings was censussed on the basis of minute grid cells. In 1997, 2003 and 2005 all pairs were counted. In all five years a number of occupied minute grid cells decreased highly significantly by 55% from 298 to 135. This equals a loss in occupied area of 393 km(2). From 1997 until 2005, the total number of breeding pairs decreased by 30% from 1,191 to 833. These data show both the abandonment of a large areas and the decrease in number of breeding pairs.

Lundi , mardi et jeudi de 9h à 12h et de 13h à 17h00 : ouverture au public ...