Artikel-Suche

Ingold, P. & A. Boldt

Birkhühner Tetrao tetrix und das Schutzkonzept auf der Lombachalp: Bestandsentwicklung als Erfolgskontrolle

2018

115

175–196

Key words
(von 1994 bis 2006 vergeben)

Besucherlenkung, Freizeitbetrieb, Tourismus, Störungen, Balzaktivität, Bestandsentwicklung, Verbreitung, Artenschutz, Schutzkonzept

Schlagwort_Vogelart
(wissenschaftlich)

Tetrao urogallus, Tetrao tetrix, Tetrastes bonasia, Turdus torquatus, Anthus pratensis, Crex crex, Alauda arvensis, Turdus torquatus, Anthus spinoletta, Anthus trivialis, Saxiola rubetra

Schlagwort_Vogelart
(deutsch)

Auerhuhn, Birkhuhn, Haselhuhn, Ringdrossel, Wiesenpieper, Wachtelkönig, Feldlerche, Ringdrossel, Bergpieper, Baumpieper, Braunkehlchen

Lombachalp, Bern, Berner Oberland, Schweiz

deutsch

Abhandlung

Black Grouse Tetrao tetrix and the protection scheme on the Lombachalp: Population trend as a performance analysis. – Since 1990, censuses of the courting male Black Grouse have been carried out on the Lombachalp (Bernese Oberland, Switzerland). Since 2007 they are part of the performance analysis of the protection scheme Lombachalp (concept for visitor information and management). The scheme aims at preserving the rich wildlife despite the increase in leisure activities. The study focussed on two questions: (1) how does the Black Grouse population develop and (2) are there any spatial and/or social changes in the courtship behaviour? The Black Grouse stands as a target species for many bird species that use the same habitat. After a maximum of 58 cocks at the beginning of the 1990s, a minimum of 14 cocks was recorded in 1998. The number increased to 37 cocks in 2005 and varied between 21 and 39 cocks since then. A positive trend was recorded in the last few years. No significant difference was found in the number of cocks before (1990–2005) and after (2007–2017) establishing the protection scheme in three out of four subregions with leisure activities in winter and in summer. The number even increased in one subregion. The spatial distribution of the leks was largely the same in both periods. Despite the winter routes partly running through the census areas, the cocks courted at the same places as in times when there were only summer hiking trails. There was no significant difference between 1995–2005 and 2007–2017 in neither the proportion of individually courting cocks nor the size of the lekking groups. Thus, a positive conclusion can be drawn. A lot of other bird species will benefit from the protection scheme, e.g. Meadow Pipit Anthus pratensis, Ring Ouzel Turdus torquatus, Capercaillie Tetrao urogallus and Hazel Grouse Tetrastes bonasia.