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Institut de recherche pour la conservation des zones humides méditerranéennes

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Titre :	[Distribution and breeding success of the Lapwing Vanellus vanellus in south-west Lower Saxony in relation to soil types and agricultural land use]
Auteurs :	Matthias Schreiber, Auteur
Type de document :	Article
Dans :	Vogelwelt (Die) (122(2) 2001)
Article en page(s) :	55-65
Résumé :	Distribution and the roughly estimated breeding success of the Lapwing Vanellus vanellus in an area of 1,110 km2 in Osnabrueck and southern surroundings (SW Lower Saxony, Germany) in 1992 are described. All suitable sites were surveyed at a first stage from 27 March to 5 May. Each site inhabited by Lapwings was checked again twice between 6 May and 18 June. All observations of Lapwings, including those of chicks, were mapped. The breeding population included 707 pairs, the population density was 0.64 pairs/km2. Out of the 603 one-minute grid cells (each approximately 2.2 km2) of the study area, 188 were occupied by Lapwings. The results are compared with surveys in neighbouring areas. The breeding success of Lapwings which was assessed by chance observations of chicks/juveniles appeared to be lower in the lowlands of the \'Ems-Hunte-Geest\' (0.21 observed chicks or juveniles/pair, n=349 pairs) than in the hills of the \'Osnabruecker Huegelland\' (0.53 observed chicks or juveniles/pair, n=358 pairs). The most common crop at the breeding sites of Lapwing was maize. Breeding success was higher at places with higher diversity of agricultural land use. The type of soil did not seem to influence breeding success.

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