La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Coordinated census of Great Cormorant Phalacrocorax carbo roosts in Wallonia and Brussels (Southern Belgium): results 2010-2011
Auteurs :	Jean-Yves Paquet, Auteur
Type de document :	Article
Dans :	Aves (48(4) DEC 2011)
Article en page(s) :	249-252
Résumé :	Two coordinated counts of communal night roosts of Great Cormorant are organised every winter in Wallonia and Brussels (mid-November and mid-January). There were 3262 cormorants counted in November 2010 and 3475 individuals in January 2011. The presented results also suggest that numbers of wintering Cormorants in Southern Belgium are now globally stable, but can be subject to fluctuation probably related to weather conditions in the study area and around. A severe drop in number in the lower course of the Meuse River is also observed, which may be related to change in river ecosystem induced by the recent invasion of an invasive clam.

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