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Institut de recherche pour la conservation des zones humides méditerranéennes

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Titre :	[Changes of the breeding bird populations in a moor complex in Upper Bavaria.]
Auteurs :	Guenther Nitsche, Auteur ; Bernd-Ulrich Rudolph, Auteur
Type de document :	Article
Dans :	Ornithologischer Anzeiger (41(1) April, 2002)
Article en page(s) :	13-30
Résumé :	This paper presents data from the changes of breeding bird populations in a moor complex in Upper Bavaria over the last 50 years, focussing mainly on the development since 1993. Draining and nutrification of fen meadows as well as drainage and industrial mining of parts of the peat bogs are the main landscape changes since 1960. In the last years the first steps of regeneration of exploited peat bogs have taken place. Characteristic birds like Black Grouse, Grey Shrike and meadow breeding birds have disappeared, birds like Teal or Meadow Pipit profit from the landscape change. A regional peculiarity of the study area is the Stonechat, which immigrated in the early 80ies and which is now reaching population densities of 1.3-1.5 breeding pairs/10 ha in the extended heathlands of drained bogs. For the first time the Grey-headed Woodpecker has been documented as a breeding bird of moor woodlands in southern Germany. Waterbirds from wetlands have settled the area since the beginning of the rewetting of exploited bogs, especially Little Grebe, some ducks, Water Rail and Bluethroat are reaching high numbers. This process is not yet finished. Perspectives for the future of the moorlands taking into account the further rewetting measures are discussed.

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