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Auteur Ubbo Mammen |
Documents disponibles écrits par cet auteur (2)
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Article
Ubbo Mammen, Auteur ; Michael Stubbe, AuteurThe monitoring project 'Raptors and Owls of Europe' initiated in 1998 publishes an annual report on the situation of raptors and owls in Central Europe. The present paper summarizes the results of the years 1995-98 for Germany and is supplemente[...]![]()
Article
Ubbo Mammen, Auteur ; Michael Stubbe, AuteurBased on the research project,,monitoring of raptors and owls in Europe" and relevant literature, the situation of the breeding populations of 26 raptor and owl species in the years 1999-2002 is summarized. Trends and fluctuations of population [...]



