Artikel-Suche

Martinez, N., J. Borer & T. Walser

Veränderung der Vogelwelt im Offenland von Erschwil (Kanton Solothurn) zwischen 1994 und 2010.

2012

109

31–42

Key words
(von 1994 bis 2006 vergeben)

Landschaftsveränderung, Kulturlandbewohner, Siedlungsbewohner, Waldbewohner, Bestandesentwicklung, Bestandesabnahme, Artenzahl, Siedlungsdichte

Schlagwort_Vogelart
(wissenschaftlich)

Motacilla alba, Parus caeruleus, Garrulus glandarius, Passer montanus, Sylvia borin, Phoenicurus phoenicurus, Emberiza citrinella, Muscicapa striata, Phoenicurus ochruros, Passer domesticus, Parus major, Delichon urbicum, Sylvia atricapilla, Hirundo rustica, Aegithalos caudatus, Sturnus vulgaris, Parus palustris, Parus ater, Turdus pilaris, Troglodytes troglodytes, Phylloscopus collybita

Schlagwort_Vogelart
(deutsch)

Bachstelze, Blaumeise, Eichelhäher, Feldsperling, Gartengrasmücke, Gartenrotschwanz, Goldammer, Grauschnäpper, Hausrotschwanz, Haussperling, Kohlmeise, Mehlschwalbe, Mönchsgrasmücke, Rauchschwalbe, Schwanzmeise, Star, Sumpfmeise, Tannenmeise, Wacholderdrossel, Zaunkönig, Zilpzalp

Schweiz, Solothurn, Erschwil

deutsch

Abhandlung

Changes in the breeding bird community of open landscapes in Erschwil (canton of Solothurn) between 1994 and 2010. – Landscape changes during the last decades have strongly affected bird species inhabiting open landscapes. For example, the number of farmland bird species is disproportionately high on the Red List of Swiss breeding birds and bird species of human settlements show a moderate decline as well. In the present article we document the change in the breeding bird community of open landscapes (i.e. agricultural land and settlements) between 1994 and 2010 for Erschwil, a rural municipality located in the Jura mountains of northern Switzerland (surface area 7.5 km2). We used the territory mapping method as applied in the project «monitoring common breeding birds» of Switzerland and conducted a study that covered the entire open landscapes of Erschwil. In 1994 we counted a total of 1429 territories of 61 bird species and in 2010 we counted about 1500 territories of 61 bird species. Since 1994 8 out of 9 bird species with an observed population change and typical for open landscapes decreased. During the same time, the population of 8 woodland species increased in the open landscape. Our results suggest that the populations of woodland species not only increased within forests as found in other studies but also increased outside woodland in open landscape that is not the main habitat for these species. We suggest that hedges, bushes and single trees that were planted before the start of our study but matured between 1994 and 2010 and thus became bigger and denser are one possible explanation for the increased populations sizes of most forest bird species in the open landscapes of Erschwil. Habitat changes favouring forest birds in open landscape might also be an explanation why bird species typical for open landscapes decreased during the same period.