La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Changing numbers of breeding birds in the Sheffield area
Auteurs :	Dave Gosney, Auteur
Type de document :	Article
Dans :	British Birds (108(2) FEB 2015)
Article en page(s) :	66-79
Résumé :	This paper illustrates some of the changes in bird populations in the Sheffield area between 1988-90 and 2008-11, using data from Timed Tetrad Visits to compare the numbers of birds counted in each period. It compares the merits of this approach with more traditional tetrad atlas studies undertaken three times in the same area since 1975 and asks whether the widely reported losses of some species have been matched by less heralded gains in others.

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