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Documents disponibles écrits par cet auteur (15)
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Article
Valentin Moser, Auteur ; Reto Spaar, Auteur ; Kim Meichtry-Stier, Auteur ; Nicolas Martinez, AuteurWe compared habitat characteristics between territories of paired and unpaired males of the long-distance migratory Common Redstart Phoenicurus phoenicurus. Nesting possibilities and reachable sparse vegetation were more abundant in territories [...]
Article
Gavino Strebel, Auteur ; Alain Jacot, Auteur ; Petra Horch, Auteur ; Reto Spaar, AuteurModern, intensive grassland management has led to strong declines in ground-nesting grassland birds, and is now increasingly threatening the last remaining strongholds of the Whinchat Saxicola rubetra in the Central European uplands. In this stu[...]
Article
Gavino Strebel, Auteur ; Alain Jacot, Auteur ; Petra Horch, Auteur ; Reto Spaar, AuteurModern, intensive grassland management has led to strong declines in ground-nesting grassland birds, and is now increasingly threatening the last remaining strongholds of the Whinchat Saxicola rubetra in the Central European uplands. In this stu[...]
Article
Martin U. Grueebler, Auteur ; Heidi Schuler, Auteur ; Reto Spaar, Auteur ; Beat Naef-Daenzer, AuteurHarvesting often results in the destruction of both, the nest and the surrounding habitat of ground-nesting farmland birds. While the direct effect of harvesting on nest loss and productivity is well investigated, the behavioural responses of pa[...]
Article
Martin Moritzi, Auteur ; Reto Spaar, Auteur ; Olivier Biber, Auteur1381 recoveries of White Storks ringed in Switzerland from 1947 to 1997 were analysed. 512 are from wild born, free-ranging storks and 856 from storks that were kept in captivity for a part of their life for reintroduction purposes ("project sto[...]
Article
Martin U. Grueebler, Auteur ; Heidi Schuler, Auteur ; Petra Horch, Auteur ; Reto Spaar, AuteurThe main reason for meadow bird declines is supposed to be the intensification of grassland management with earlier first harvest dates and more frequent harvests, resulting in high nest destruction rates. To increase productivity of meadow bird[...]
Article
Mathis Mueller, Auteur ; Reto Spaar, Auteur ; Luc Schifferli, Auteur ; Lukas Jenni, AuteurThe increasing intensity of farming of meadows is supposed to be the major cause for strong declines of many meadow breeding birds. The whinchat, Saxicola rubetra, a Palaearctic migratory bird, is an indicator species of open grassland farmed at[...]
Article
Mathis Mueller, Auteur ; Reto Spaar, Auteur ; Luc Schifferli, Auteur ; Lukas Jenni, AuteurThe increasing intensity of farming of meadows is supposed to be the major cause for strong declines of many meadow breeding birds. The whinchat, Saxicola rubetra, a Palaearctic migratory bird, is an indicator species of open grassland farmed at[...]
Article
Martin U. Grüebler, Auteur ; Heidi Schuler, Auteur ; Mathis Mueller, Auteur ; Reto Spaar, Auteur ; Petra Horch, Auteur ; Beat Naef-Daenzer, AuteurMeadow breeding birds such as the whinchat Saxicola rubetra have been declining due to increased farming intensity. In modern grassland management, the first mowing and the bird's breeding cycle coincide, causing high nest destruction rates and [...]
Article
Rasmus Revermann, Auteur ; Hans Schmid, Auteur ; Niklaus Zbinden, Auteur ; Reto Spaar, Auteur ; Boris Schroeder, AuteurOngoing monitoring in the Swiss Alps has shown that Rock Ptarmigan (Lagopus muta helvetica) has suffered a significant population decrease over the last decade and climate change has been proposed as a potential cause. In this study, we investig[...]
Article
Habitatwahl der Dorngrasmücke Sylvia communis in der Westschweiz: Folgerungen für die Artenförderung
Kim Silvana Meichtry-Stier, Auteur ; Fränzi Korner-Nievergelt, Auteur ; Urs Kormann, Auteur ; Martin Spiess, Auteur ; Paul Mosimann-Kampe, Auteur ; Stephan Strebel, Auteur ; Jean-Luc Zollinger, Auteur ; Reto Spaar, Auteur
Article
Adrian Britschgi, Auteur ; Reto Spaar, Auteur ; Raphaël Arlettaz, AuteurThe decline of insectivorous farmland passerines has been attributed mostly to global decrease in arthropod availability, as a result of intensification of agricultural practices. The diminution of the Alpine Whinchat, once a widespread insectiv[...]
Article
Jens von dem Bussche, Auteur ; Reto Spaar, Auteur ; Hans Schmid, Auteur ; Boris Schroeder, AuteurWe present here a multiscale modelling approach to predict the current and future spatial distribution of Ring Ouzel (Turdus torquatus) and Blackbird (T. merula) in Switzerland. Species distribution models (SDMs) are applied on three different s[...]
Article
ANATOLE GERBER, Auteur ; STEFAN MÜLLER, Auteur ; THOMAS SCHWALLER, Auteur ; Hans Schmid, Auteur ; Reto Spaar, Auteur
Article
Raffael Aye, Auteur ; Verena Keller, Auteur ; WERNER Müller, Auteur ; Reto Spaar, Auteur ; Niklaus Zbinden, Auteur
