La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	The status of the Dartford Warbler in the UK and the Channel Islands in 2006
Auteurs :	Simon Wotton, Auteur ; Greg Conway, Auteur ; Mark Eaton, Auteur ; Ian Henderson, Auteur ; Phil Grice, Auteur
Type de document :	Article
Dans :	British Birds (102(5) MAY 2009)
Article en page(s) :	230-246
Résumé :	The fourth full Dartford Warbler Sylvia undata survey in the UK was undertaken in 2006. The species was also surveyed in the Channel Islands. The aim was to achieve full coverage of all the 1-km squares ('core' squares) occupied during the previous national survey (in 1994) and subsequently, together with sample coverage of a random selection of squares from within 5-km and 10-km buffers around these core squares, stratified by the presence of suitable habitat. The UK population was estimated at 3,214 territories (95% confidence limits, 2,878-3,591) in 2006, which represents an increase of 70% since 1994. In England there were an estimated 3,142 (2,827-3,491) territories, in Wales an estimated

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