Artikel-Suche

Meichtry-Stier, K. S., F. Korner-Nievergelt, U. Kormann, M. Spiess, P. Mosimann-Kampe, S. Strebel, J.-L. Zollinger & R. Spaar

Habitatwahl der Dorngrasmücke Sylvia communis in der Westschweiz: Folgerungen für die Artenförderung.

2013

110

1–16

Key words
(von 1994 bis 2006 vergeben)

Bestandesentwicklung, Bestandesrückgang, Habitatverlust, Lebensraum, Hecken, Buntbrachen, Verhalten, Aktivität, Artenschutz

Schlagwort_Vogelart
(wissenschaftlich)

Sylvia communis

Schlagwort_Vogelart
(deutsch)

Dorngrasmücke

Grosses Moos, Bern, Freiburg, Waadt, Westschweiz

deutsch

Abhandlung

Habitat selection of the Common Whitethroat Sylvia communis in the western part of Switzerland: implications for species conservation. – The decline of Common Whitethroat populations in Switzerland between the mid-1970s and the mid-1990s has been mainly attributed to habitat loss and degradation of habitat quality. To improve farmland biodiversity, agri-environment schemes (AES) were introduced in the 1990s. Here, we show optimizations of the AES-types «hedgerow» and «wildflower strip» for the Common Whitethroat. We looked at the population trend of the Whitethroat in the region of Grosses Moos on the Swiss plateau. Furthermore, we compared vegetation structure of occupied breeding sites in hedgerows and wildflower strips with similar but unoccupied habitats nearby. Between 2000 and 2006 the number of Whitethroat territories in the Grosses Moos decreased from 115 to 30. This decline was most pronounced in habitats with tall hedgerows, whereas the territory numbers in wildflower strips even increased. Whitethroat territories in hedgerows were positively associated with the presence of brambles and an increasing area of thorny bushes, and negatively with hedgerow cross-section area and margin width. In wildflower strips, territories were positively associated with the presence of tall herbaceous plants. Within agri-environment schemes, conservation measures for the Whitethroat should favour the presence of thorny shrubs and brambles in hedgerows, and the cultivation of wild flower strips with different tall plant species such as Fuller’s Teasel Dipsacus fullonum.