Détail de l'auteur
Documents disponibles écrits par cet auteur (36)
Ajouter le résultat dans votre panier Affiner la recherche
Article
Steffen Hahn, Auteur ; Raffaella Schmid, Auteur ; Davor Cikovic, Auteur ; Sanja Barisic, Auteur ; Tamara Emmenegger, AuteurSpanish Sparrows in the Western Palaearctic show different migration strategies that might affect haemosporidian parasitism. In a migratory Croatian population, haemosporidian prevalence averaged at 39.8%, with low parasitemia and low parasite d[...]Nouveauté
Article
Joanna B. Wong, Auteur ; Tomas Brinke, Auteur ; Martins Briedis, Auteur ; Steffen Hahn, AuteurThe natural history of migration comprises a set of population-specific ecological and flexible traits, that will undergo fundamental changes under current climate alterations, but basic features remain undiscovered for many species and populati[...]
Article
Sarah Strubbe, Auteur ; Oleg Bourski, Auteur ; Johannes Amshoff, Auteur ; Moritz Meinken, Auteur ; Vladimir Tarasov, Auteur ; Vera Volkova, Auteur ; Ramona Julia Heim, Auteur ; Nathalie Kürten, Auteur ; Steffen Hahn, Auteur ; Kasper Thorup, Auteur ; Wieland Heim, AuteurThe Red-spotted Bluethroat (Luscinia svecica svecica) has a large breeding range in northern Eurasia and populations are known to migrate along the Indo-European or the East Asian flyway towards wintering areas in South and South-East Asia. The [...]
Article
Peter Adamik, Auteur ; Joanna B. Wong, Auteur ; Steffen Hahn, Auteur ; Anton Krištín, AuteurThe Lesser Grey Shrike is a typical Palaearctic songbird for which we have limited knowledge of its migration ecology. All that is known about its non-breeding movements is inferred from observational data of birds on passage. The few available [...]
Article
Joanna B. Wong, Auteur ; Francina Turon, Auteur ; Mario Fernández-Tizón, Auteur ; Steffen Hahn, AuteurUsing EURING data and geolocation, we describe migration routes and the nonbreeding range of Red-rumped Swallows breeding in the Western Palearctic. One bird ringed in southern Spain and recovered in southern Morocco indicates southwestern migra[...]
Article
Joana S. Costa, Auteur ; Steffen Hahn, Auteur ; Afonso D. Rocha, Auteur ; Pedro M. Araújo, Auteur ; Juanita Olano-Marín, Auteur ; Tamara Emmenegger, Auteur ; José A. Alves, AuteurCapsule: A combination of several biometric measures enables the reliable sexing of the European Bee-eater Merops apiaster, a species with subtle sex differences in plumage and morphometry.Aims: To explore variation in biometrics and their suita[...]
Article
Volker Salewski, Auteur ; Martin Flade, Auteur ; Simeon Lisovski, Auteur ; Anatolii Poluda, Auteur ; Oleksander Iliukha, Auteur ; Grzegorz Kiljan, Auteur ; Uladzimir Malashevich, Auteur ; Steffen Hahn, AuteurBirds that are long-distance migrants partition their annual cycle among a number of locations over a large spatial range. The conservation of these species is particularly complex because it requires attention to a number of different and dista[...]
Article
Martins Briedis, Auteur ; Petras Kurlavičius, Auteur ; Renata Mackevičienė, Auteur ; Rasa Vaišvilienė, Auteur ; Steffen Hahn, AuteurSeasonal variation in migratory routes seems to be a common trait among many Afro-Palearctic migrants, but there are only few examples of species or populations which shift between entirely different flyways in autumn and spring. To identify non[...]
Article
Petr Procházka, Auteur ; Vojtěch Brlík, Auteur ; Elizabeth Yohannes, Auteur ; Bert Meister, Auteur ; Jürgen Auerswald, Auteur ; Mihaela Ilieva, Auteur ; Steffen Hahn, AuteurMigratory divides represent narrow zones of overlap between parapatric populations with distinct migration directions and, consequently, expected divergent non-breeding distributions. The composition of the mixed population at a migratory divide[...]
Article
Dieter Hiemer, Auteur ; Volker Salewski, Auteur ; Wolfgang Fiedler, Auteur ; Steffen Hahn, Auteur ; Simeon Lisovski, AuteurThe Blackcap Sylvia atricapilla is a model species for the evolution of bird migration in a time of global change. However, many assumptions about putative changes to their migratory paths have not been verified because, until recently, it has n[...]
Article
Terje Lislevand, Auteur ; Martins Briedis, Auteur ; Oddvar Heggøy, Auteur ; Steffen Hahn, AuteurHow individual birds schedule their movements and use different sites during the non-breeding season are fundamental issues in avian migration ecology, and studies have often revealed strong seasonal variation in such strategies. Using geolocato[...]
Article
Anna Gersten, Auteur ; Steffen Hahn, AuteurTiming the annual cycle according to local conditions is crucial for animals in seasonal environments, because individual resource requirements must match seasonal resource availabilities. Pre-nuptial spring migration is especially time constrai[...]
Article
Martins Briedis, Auteur ; Johan Träff, Auteur ; Steffen Hahn, Auteur ; Mihaela Ilieva, Auteur ; Miroslav Král, Auteur ; Strahil Peev, Auteur ; Peter Adamik, AuteurWe examined migration routes and non-breeding sites of a poorly studied long-distance migrant, the Semi-collared Flycatcher Ficedula semitorquata, by tracking adult birds with geolocators from an eastern European breeding population across two s[...]
Article
Susanne Arbeiter, Auteur ; Martin Schulze, Auteur ; Peter Tamm, Auteur ; Steffen Hahn, AuteurAerial insectivorous birds depend highly on favourable weather conditions for successful foraging because flight activity of insects is constrained by daily weather. Thus, the variation in weather conditions during reproduction, mediated by prey[...]
Article
Terje Lislevand, Auteur ; Bohumír Chutný, Auteur ; Ingvar Byrkjedal, Auteur ; Václav Pavel, Auteur ; Martins Briedis, Auteur ; Peter Adamik, Auteur ; Steffen Hahn, AuteurCapsule Red-spotted Bluethroats Luscinia s. svecica from two European breeding populations spent the boreal winter on the Indian sub-continent.Aim Tracking the migration of Red-spotted Bluethroats from Europe to the hitherto unknown non-breeding[...]
Article
Terje Lislevand, Auteur ; Bohumír Chutný, Auteur ; Ingvar Byrkjedal, Auteur ; Václav Pavel, Auteur ; Martins Briedis, Auteur ; Peter Adamik, Auteur ; Steffen Hahn, AuteurCapsule Red-spotted Bluethroats Luscinia s. svecica from two European breeding populations spent the boreal winter on the Indian sub-continent.Aim Tracking the migration of Red-spotted Bluethroats from Europe to the hitherto unknown non-breeding[...]
Article
Juan G. Navedo, Auteur ; Steffen Hahn, Auteur ; Manuel Parejo, Auteur ; José M. Abad-Gómez, Auteur ; Jorge S. Gutiérrez, Auteur ; Auxiliadora Villegas, Auteur ; Juan M. Sánchez-Guzmán, Auteur ; José A. Masero, AuteurWaterbirds can reallocate a considerable amount of nutrients within agricultural fields and between agriculture sites and wetlands. However their effects on biogeochemical cycles have rarely been quantified. We estimated bird numbers, diet (from[...]
Article
Susanne Arbeiter, Auteur ; Hannah Schnepel, Auteur ; Karl Uhlenhaut, Auteur ; Yves Bloege, Auteur ; Martin Schulze, Auteur ; Steffen Hahn, AuteurEuropean bee-eaters Merops apiaster forage almost exclusively on airborne insects caught on the wing. The availability of this food might be temporally limited due to adverse weather conditions, especially at climatically sub-optimal breeding si[...]
Article
Steffen Hahn, Auteur ; Dimitar Dimitrov, Auteur ; Saskia Rehse, Auteur ; Elizabeth Yohannes, Auteur ; Lukas Jenni, AuteurDetailed knowledge about claw formation and growth rate is a prerequisite for the interpretation of avian claw stable isotopes, as is commonly done with feather stable isotopes to e.g. infer habitat use, dietary specialisations, and spatial occu[...]
Article
Martins Briedis, Auteur ; Steffen Hahn, Auteur ; Lars Gustafsson, Auteur ; Ian Henshaw, Auteur ; Johan Träff, Auteur ; Miroslav Král, Auteur ; Peter Adamik, AuteurThe temporal and spatial organization of the annual cycle according to local conditions is of crucial importance for individuals' fitness. Moreover, which sites and when particular sites are used can have profound consequences especially for mig[...]
Article
Jaroslav Kolecek, Auteur ; Petr Procházka, Auteur ; Naglaa El-Arabany, Auteur ; Maja Tarka, Auteur ; Mihaela Ilieva, Auteur ; Steffen Hahn, Auteur ; Marcel Honza, Auteur ; Javier de la Puente, Auteur ; Ana Bermejo, Auteur ; Arzu Gursoy, Auteur ; Staffan Bensch, Auteur ; Pavel Zehtindjiev, Auteur ; Dennis Hasselquist, Auteur ; Bengt Hansson, AuteurMigratory connectivity describes to which degree different breeding populations have distinct (non-overlapping) non-breeding sites. Uncovering the level of migratory connectivity is crucial for effective conservation actions and for understandin[...]
Article
Tamara Emmenegger, Auteur ; Patrick Mayet, Auteur ; Olivier Duriez, Auteur ; Steffen Hahn, AuteurIndividual migrants often fly detours when travelling between breeding and non-breeding sites, resulting in specific changes in flight directions along a migratory leg. Western European populations of the European Roller (Coracias garrulus), the[...]
Article
Tibor Szép, Auteur ; Felix Liechti, Auteur ; Karoly Nagy, Auteur ; Zsolt Nagy, Auteur ; Steffen Hahn, AuteurThe central-eastern European populations of sand martin and house martin have declined in the last decades. The drivers for this decline cannot be identified as long as the whereabouts of these long distance migrants remain unknown outside the b[...]
Article
Terje Lislevand, Auteur ; Steffen Hahn, Auteur
Article
Marcel Klaassen, Auteur ; Steffen Hahn, Auteur ; Harry Korthals, Auteur ; Jesper Madsen, AuteurMany Arctic-breeding waterbirds are thought to bring nutrients for egg production from southern latitudes to allow early breeding. It has proved problematic to quantify the extent of such capital breeding and identify whether nutrients for egg p[...]
Article
Chiara Scandolara, Auteur ; Diego Rubolini, Auteur ; Roberto Ambrosini, Auteur ; Manuela Caprioli, Auteur ; Steffen Hahn, Auteur ; Felix Liechti, Auteur ; Andrea Romano, Auteur ; Maria Romano, Auteur ; Beatrice Sicurella, Auteur ; Nicola Saino, AuteurMiniaturized light-level geolocators may revolutionise the study of avian migration. However, there are increasing concerns that they might negatively affect fitness. We investigated the impact of two miniaturized geolocator models (SOI-GDL2.10,[...]
Article
Jaroslav Kolecek, Auteur ; Steffen Hahn, Auteur ; Tamara Emmenegger, Auteur ; Petr Procházka, AuteurMigratory birds often move significantly within their non-breeding range before returning to breed. It remains unresolved under which circumstances individuals relocate, whether movement patterns are consistent between populations and to what de[...]
Article
Tim Janicke, Auteur ; Steffen Hahn, Auteur ; Klaus Reinhardt, Auteur ; Markus Ritz, Auteur ; Hans-Ulrich Peter, Auteur
Article
Fraenzi Korner-Nievergelt, Auteur ; Felix Liechti, Auteur ; Steffen Hahn, AuteurThe large databases on ring reencounters, e.g. Euring database, contain extant information on the spatial distribution and potentially, on migratory connectivity of birds. However, reencounter data are normally sparse due to low reencounter prob[...]
Article
Steffen Hahn, Auteur ; Maarten J. J. E. Loonen, Auteur ; Marcel Klaassen, AuteurBreeding in the high Arctic is time constrained and animals should therefore start with their annual reproduction as early as possible. To allow for such early reproduction in migratory birds, females arrive at the breeding grounds either with b[...]
