Détail de l'auteur
Documents disponibles écrits par cet auteur (20)
Ajouter le résultat dans votre panier Affiner la recherche
Article
Marco Perrig, Auteur ; Martin U. Grüebler, Auteur ; Herbert Keil, Auteur ; Beat Naef-Daenzer, AuteurAmong the range of determinants of post-fledging survival in altricial birds, the energy supply to the growing juveniles is likely to play a central role. However, the exact mechanisms shaping post-fledging survival are poorly understood. Using [...]
Article
Julia Staggenborg, Auteur ; H. Martin Schaefer, Auteur ; Christian Stange, Auteur ; Beat Naef-Daenzer, Auteur ; Martin U. Grüebler, AuteurIn many bird species, parents adjust their home-ranges during chick-rearing to the availability and distribution of food resources, balancing the benefits of energy intake against the costs of travelling. Over recent decades, European agricultur[...]
Article
Vanja T. Michel, Auteur ; Beat Naef-Daenzer, Auteur ; Herbert Keil, Auteur ; Martin U. Grüebler, AuteurThe amount of high-quality habitat patches, their distribution, and the resource accessibility therein play a key role in regulating habitat effects on reproductive success. Heterogeneous habitats offer non-substitutable resources (e.g. nest sit[...]
Article
Luzia Naef-Daenzer, Auteur ; Martin U. Grueebler, Auteur ; Beat Naef-Daenzer, AuteurIn seasonal environments with limited time and energy resources, double-brooded birds face trade-offs in the timing of their two reproductive attempts and in the effort allocated to the first and the second broods. In the Barn Swallow Hirundo ru[...]
Article
Harnesses are indispensable for a long-term attachment of instruments to animals, particularly birds. The exact fit is crucial for both the reliability of the tags and the animals' health and natural behaviour. Using data from 19 bird species ra[...]
Article
Luc Schifferli, Auteur ; Martin U. Grueebler, Auteur ; Harro A. J. Meijer, Auteur ; G. Henk Visser, Auteur ; Beat Naef-Daenzer, AuteurIn altricial birds, the great effort involved in supplying food to nestlings can create trade-offs in the allocation of resources between the current brood and parental self-maintenance. In poor foraging conditions, parents have to adjust their [...]
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
Beat Naef-Daenzer, Auteur ; Fränzi Korner-Nievergelt, Auteur ; Wolfgang Fiedler, Auteur ; Martin U. Grüebler, AuteurRecoveries of marked animals hold long-term, large-scale information on survival and causes of mortality, but are prone to bias towards dead recoveries and casualties in the range of presence of potential finders. Thus, accounting for circumstan[...]
Article
Heiko Schmaljohann, Auteur ; Beat Naef-Daenzer, Auteur1. An innate migration strategy guides birds through space and time. Environmental variation further modulates individual behaviour within a genetically determined frame. In particular, ecological barriers could influence departure direction and[...]
Article
Olivia Rickenbach, Auteur ; Martin U. Grueebler, Auteur ; Michael Schaub, Auteur ; Andreia Koller, Auteur ; Beat Naef-Daenzer, Auteur ; Luc Schifferli, AuteurMany farmland-breeding wader species have declined across Europe, probably due to reductions in reproductive output caused by high nest losses as a result of agriculture or predation, or low chick survival between hatching and fledging. Most stu[...]
Article
Marco Perrig, Auteur ; Martin U. Grueebler, Auteur ; Herbert Keil, Auteur ; Beat Naef-Daenzer, AuteurIn birds, energy supply during growth is a major predictor of the fledglings' physical condition and survival prospects. Differential quantity and quality of fledglings produced under varying nestling food supplies are likely to affect the numbe[...]
Article
Martin Gruebler, Auteur ; Beat Naef-Daenzer, Auteur
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
Martin U. Grueebler, Auteur ; Beat Naef-Daenzer, AuteurIn seasonal environments, avian reproductive performance almost generally declines in the course of the season. Quantifying the associated fitness consequences of timing of breeding, i.e. of date-related factors, is important for understanding t[...]
Article
Heiko Schmaljohann, Auteur ; Philipp J. J. Becker, Auteur ; Hakan Karaardic, Auteur ; Felix Liechti, Auteur ; Beat Naef-Daenzer, Auteur ; Celia Grande, AuteurStopover studies have concentrated so far mostly on mechanisms regulating the temporal organisation on the day-to-day level. Taking advantage of the small and isolated island of Helgoland in the North Sea, we investigated the stopover and depart[...]
Article
Beat Naef-Daenzer, Auteur ; Martin U. Grueebler, AuteurThe timing of breeding and the chicks' fledging condition are major fitness-relevant traits in the Great Tit Parus major. Yet, the proximate mechanisms relating these traits to differential survival and recruitment are largely unknown. We analys[...]
Article
Beat Naef-Daenzer, Auteur ; Martin U. Grüebler, AuteurFor altricial young, fledging is an abrupt step into an unknown environment. Despite increasing numbers of studies addressing the post-fledging period, our current knowledge of the causes and consequences of post-fledging survival remains fragme[...]
Article
Anja Bock, Auteur ; Beat Naef-Daenzer, Auteur ; Herbert Keil, Auteur ; Fraenzi Korner-Nievergelt, Auteur ; Marco Perrig, Auteur ; Martin U. Grueebler, AuteurRoost site selection is a state-dependent process, affected by the individual's costs and benefits of roosting at a specific site in the available environment. Costs and benefits of different roost sites vary in relation to intrinsic factors and[...]
Article
Martin U. Grueebler, Auteur ; Beat Naef-Daenzer, AuteurP>1. Caring for offspring beyond leaving the nest is an important but under-studied part of avian life histories. Theory predicts that prolonged post-fledging parental care should yield fitness benefits such as increased fledgling survival. Post[...]
