Artikel-Suche

Ayé, R., E. Bernardi, W. Christen, P. Horch, L. Hüppin, M. Jenny, B. Lugrin, P. Mosimann-Kampe, W. Müller, B. Posse, P. Rapin, H. Schmid, Y. Schwarzenbach, R. Spaar, S. Strebel & J.-L. Zollinger

Bestand der Grauammer Emberiza calandra in der Schweiz 2009–2011 und Schwerpunktgebiete für ihre Förderung.

2013

110

465–474

Key words
(von 1994 bis 2006 vergeben)

Verbreitung, Bestand, Bestandesentwicklung, Population, Buntbrachen, ökologische Ausgleichsflächen

Schlagwort_Vogelart
(wissenschaftlich)

Emberiza calandra

Schlagwort_Vogelart
(deutsch)

Grauammer

Schweiz, Champagne genevoise, Grosses Moos, Klettgau, Neuenburgersee, Genfersee, Flughafen Kloten

deutsch

Abhandlung

Population size of the Corn Bunting Emberiza calandra in Switzerland in 2009–2011 and key areas for its conservation. – The Corn Bunting is classified as Vulnerable according to the Swiss Red List and a priority species for recovery programmes. Its population in Switzerland has been estimated at 400 to 600 pairs in the years 1993–1996. The objective of the present study was to establish an updated population estimate for the period 2009–2011 and to identify the core areas for the conservation of the species. We based our population estimate on monitoring projects existing in four areas with corn bunting populations and for the rest of Switzerland on casual observations collected by the Swiss Ornithological Institute. This procedure resulted in an estimate of 93 to 103 territories on average for the years 2009–2011. The species has disappeared from many areas and a decline of about 80 % since the mid-1990s has to be assumed. Species recovery should therefore be of high priority in the remaining populations and in areas with a high potential. The current core areas of the species are the Champagne genevoise, the Grosses Moos, the Klettgau and the region from Lake Neuchâtel to Lake Geneva.