10 Works

Data from: Survival varies seasonally in a migratory bird: linkages between breeding and non-breeding periods

Robert Robinson, Christoph Meier, Willem Witvliet, Marc Kery & Michael Schaub
1. Migratory species form an important component of biodiversity; they link ecosystems across the globe, but are increasingly threatened by global environmental change. Understanding and mitigating threats requires knowledge of how demographic processes operate throughout the annual cycle, but this can be difficult to achieve when breeding and non-breeding grounds are widely separated. 2. Our goal is to quantify the importance of variability in survival during the breeding and non-breeding seasons in determining variation in...

Integrating light-level geolocation with activity tracking reveals unexpected nocturnal migration patterns of the tawny pipit

Martins Briedis, Václav Beran, Peter Adamik & Steffen Hahn
Migratory birds complete their seasonal journeys between breeding and non-breeding sites with a series of migratory flights that are separated by prolonged stopovers. While songbirds are the most common taxa among migratory birds, empirical data on flight and stopover behaviour along their entire migratory journeys are still rare. Here, we integrate activity and barometric pressure tracking with classical light-level geolocation to describe migration behaviour of tawny pipits Anthus campestris breeding in Central Europe. Surprisingly, tracked...

Deer density drives habitat use of establishing wolves in the Western European Alps

Stefanie Roder, François Biollaz, Stéphane Mettaz, Fridolin Zimmermann, Ralph Manz, Marc Kery, Sergio Vignali, Luca Fumagalli, Raphaël Arlettaz & Veronika Braunisch
1. The return of top carnivores to their historical range triggers conflicts with the interests of different stakeholder groups. Anticipating such conflicts is key to appropriate conservation management, which calls for reliable spatial predictions of future carnivore occurrence. Previous models have assessed general habitat suitability for wolves, but the factors driving the settlement of dispersing individuals remain ill-understood. In particular, little attention has been paid to the role of prey availability in the recolonization process....

Age specific reproduction in female pied flycatcher: evidence for asynchronous aging

Rémi Fay
Age-related variation in demographic performance is central for the understanding of population dynamics and evolutionary processes. Our understanding of age-trajectories in vital rates has long been limited by the lack of distinction between patterns occurring at the population and the individual levels, and by the lack of comparative studies of age trajectories among traits. Thus, we poorly know how sets of demographic traits change within individuals according to the age. Based on a 40 years...

Potential sex-dependent effects of weather on apparent survival of a high-elevation specialist

Eliseo Strinella, Davide Scridel, Mattia Brambilla, Christian Schano & Fränzi Korner-Nievergelt
Mountain ecosystems are inhabited by highly specialised and endemic species which are particularly susceptible to climatic changes. However, the mechanisms by which climate change affects species population dynamics are still largely unknown, particularly for mountain birds. We investigated how weather variables correlate with apparent survival of the White-winged Snowfinch Montifringilla nivalis, a specialist of high-elevation habitat. We analysed a 15-year (2003-2017) mark-recapture data set of 671 individuals from the Apennines (Italy), using mark-recapture models. We...

Integrating stable isotopes, parasite and ring-reencounter data to quantify migratory connectivity - a case study with Barn Swallows breeding in Switzerland, Germany, Sweden and Finland

Jan Von Rönn, Martin U. Grüebler, Thord Fransson & Fränzi Korner-Nievergelt
Ecosystems around the world are connected by seasonal migration. The migrant animals themselves are influenced by migratory connectivity through effects on the individual and the population level. Measuring migratory connectivity is notoriously difficult due to the simple requirement of data conveying information about the non-breeding distribution of many individuals from several breeding populations. Explicit integration of data derived from different methods increases the precision and the reliability of parameter estimates. We combine ring-reencounter, stable isotope...

Data from: First records of complete annual cycles in water rails Rallus aquaticus show evidence of itinerant breeding and a complex migration system

Terje Lislevand, Steffen Hahn, Sven Rislaa & Martins Briedis
In water rails Rallus aquaticus, northern and eastern populations are migratory while southern and western populations are sedentary. Few details are known about the annual cycle of this elusive species. We studied movements and breeding in water rails from southernmost Norway where the species occurs year-round. Colour-ringed wintering birds occurred only occasionally at the study site in summer, and vice versa. Geolocator tracks revealed that wintering birds (n = 10) migrated eastwards in spring to...

Data from: Disentangling the spatial and temporal causes of decline in a bird population

Floriane Plard, Raphaël Arlettaz, Alain Jacot & Michael Schaub
The difficulties in understanding the underlying reasons of a population decline lie in the typical short duration of field studies, the often too small size already reached by a declining population or the multitude of environmental factors that may influence population trend. In this difficult context, useful demographic tools such as integrated population models (IPM) may help disentangling the main reasons for a population decline. To understand why a hoopoe Upupa epops population has declined,...

Bird communities in the Swiss Alps, 1999-2018, abundance data

Vicente García-Navas, Thomas Sattler, Hans Schmid & Arpat Ozgul
Aim: Mountains are biodiversity hotspots and are among the most sensitive eco- systems to ongoing global change being thus of conservation concern. Under this scenario, assessing how biological communities vary over time along elevational gra- dients and the relative effects of niche-based deterministic processes and stochastic events in structuring assemblages is essential. Here, we examined how the temporal trends of bird communities vary with elevation over a 20 year-period (1999–2018). We also tested for differences...

Data from: Combining climate, land use change and dispersal to predict the distribution of endangered species with limited vagility

Francesca Della Rocca & Pietro Milanesi
Aim: Many rare species are dispersal-limited and minimal land use and climate changes can impact their colonization capacity. Most ecological niche models predict the distribution of species under future climate and land use change scenarios without incorporating specie-specific dispersal abilities. Here we investigated the effect of climate and land use change on low vagile species accounting for their dispersal capacity and defined accessible areas in the future. Location: Europe. Taxon: Saproxylic beetles. Methods: We used...

Registration Year

  • 2020

Resource Types

  • Dataset


  • Swiss Ornithological Institute
  • University of Bern
  • Museo delle Scienze
  • University of Pavia
  • University of Lausanne
  • University of Lisbon
  • Prirodnjacki Muzej Crne Gore
  • University of Zurich
  • N&N Pharmaceuticals (United States)
  • British Trust for Ornithology