La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	The development of the Crane population at the gathering and staging site "Unteres Odertal" during the last 25 years
Auteurs :	Hans-Jochen Haferland, Auteur
Type de document :	Article
Dans :	Vogelwelt (Die) (120(5-6) 1999)
Article en page(s) :	291-294
Résumé :	An important crane gathering and resting site can be found in the lower Odra valley at the border between Germany and Poland. The number of cranes resting there has increased from less than 100 in the 1970s, to around 1,000 in the mid-1980s, to 4,000 individuals at the beginning of the 1990s. The highest number counted was 12,950 on 4 October 1998. The establishment of the National Park "Unteres Odertal" has secured this valuable area with crane roosting sites in the Polish "Oderpolder". The plans to erect large wind power plants in fields on the German side of the park, however, threaten the crane's flight routes to the roost sites.

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