La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	The little Owl (Athene noctua Scopoli) in the plain of Crau (France): distribution and first population size assessment
Auteurs :	Nicolas Vincent-Martin, Auteur
Type de document :	Article
Dans :	Ecologia Mediterranea (30(1, Sp. Iss. SI) 2004)
Article en page(s) :	105-110
Résumé :	The plain of Crau has a strong patrimonial interest owning the last steppe landscape, known as "coussoul", of France and a wide floristics and faunistics assemblage of which an important Little Owl Athene noctua population. Until now, none assessment of it was ever conducted in all the plain. The present survey covered the 440 km(2) of the plain designated as a ZICO. (Important Bird Areas in Europe). The method of "tape luring" was used with sampling points distributed every 750 m along roads and practicable tracks. A total number of 148 singer males was recorded on the 480 km(2) prospected area which represented a mean density of 0,31 singer male per km(2). Little Owl distribution in the plain of Crau seemed to be structured into 4 main cores. Their density varied between 0,5 and 1,6 singer male per km(2). Bias were found linked to the tape recorder type used for this study and to the noise nuisance of road traffic.

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