La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Evolution of the populations of the Black Grouse (Tetrao tetrix) in the Belgian Hautes-Fagnes with respect to the modifications of the habitat's ecological parameters.
Auteurs :	Christine Keulen, Auteur ; Olivier Charlet, Auteur ; Pascal Poncin, Auteur ; Jean-Claude Ruwet, Auteur
Type de document :	Article
Dans :	Aves (42(1-2) 2005)
Article en page(s) :	103-120
Résumé :	During the last thirty-seven years the population :of Black Grouse in the Belgian Hautes-Fagnes has undergone a long declining trend. In view of this critical situation, a restoration plan for the species has been lauched. Habitat selection by cocks and hens was investigated in the main parts of the SAC, during eight years. The diet composition was also studied by analysing droppings collected all round the year. Results show that key factors in habitat selection for: Black Grouse are the quality of the Ericaceae cover, the opening of the landscape, the possibility to find flat place to display, the presence of, open woods (Birch and Rowan) and the possibility of burrowing igloos during snow periods. Considering the first results from the study, the Forestry Districts have undertaken different measures to improve Black Grouse habitats.

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