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Documents disponibles écrits par cet auteur (39)
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Article
Mads Eskildsen, Auteur ; Stefan Garthe, Auteur ; Philipp Schwemmer, AuteurStopovers during migration periods are essential to allow birds to accumulate energy, recover, and/or avoid adverse weather conditions. Recoveries of ringed birds have shown that Pied Avocets (Recurvirostra avosetta) may winter at various places[...]
Article
Anthony D. Fox, Auteur ; Johanna Osterberg, Auteur ; Ib K. Petersen, Auteur ; Thorsten J. S. Balsby, Auteur ; Nele Markones, Auteur ; Philipp Schwemmer, Auteur ; Stefan Garthe, AuteurMoulting and overwintering Common Scoter Melanitta nigra aggregate in largely undisturbed, shallow-water marine areas, preying upon sessile benthic organisms (mainly bivalves), which do not reproduce during this period of exploitation. Assuming [...]
Article
Stefan Garthe, Auteur ; Karena Haecker, Auteur ; Alexander Mitschke, Auteur ; Volker Dierschke, Auteur ; Philipp Schwemmer, AuteurThe lower River Elbe, including Hamburg, is part of a distribution hotspot for Mediterranean Gulls in northwest Europe. We studied local population trends and foraging behaviours of 13 adult Mediterranean Gulls breeding on a roof top at the edge[...]
Article
Dagmar S. Cimiotti, Auteur ; Dominic V. Cimiotti, Auteur ; Hermann Hötker, Auteur ; Stefan Garthe, AuteurInformation on migratory connections provides a basis for effective conservation efforts. The spatial connections between breeding and wintering areas are poorly known for many species. The connections become complicated in species that carry ou[...]
Article
Stefan Garthe, Auteur ; Verena Peschko, Auteur ; David A. Fifield, Auteur ; Kai Borkenhagen, Auteur ; Timme Nyegaard, Auteur ; Jochen Dierschke, AuteurWe analysed the migratory behaviour of adult Northern Gannets (Morus bassanus) breeding at Helgoland in the North Sea, based on data obtained from geolocation devices in the non-breeding season 2016–2017. Birds moved east and south-west to a bro[...]
Article
Dagmar S. Cimiotti, Auteur ; Hermann Hötker, Auteur ; Stefan Garthe, AuteurHabitat conditions surrounding individual birds are key components determining their fitness, notably by influencing effective foraging, escape from predators, and adaptation to changing environmental conditions. Birds living in dynamic habitats[...]
Article
Dagmar S. Cimiotti, Auteur ; Hermann Hötker, Auteur ; Stefan Garthe, AuteurExperimental studies have shown that individual wildfowl can shorten or skip moulting if the time between breeding and wintering is short; however, studies in wild birds are scarce. We tracked nine Common Shelducks Tadorna tadorna during the bre[...]
Article
Jethro G. Gauld, Auteur ; João P. Silva, Auteur ; Philip W. Atkinson, Auteur ; Paul Record, Auteur ; Marta Acácio, Auteur ; Volen Arkumarev, Auteur ; Julio Blas, Auteur ; Willem Bouten, Auteur ; Niall Burton, Auteur ; Ines Catry, Auteur ; Jocelyn Champagnon, Auteur ; Gary D. Clewley, Auteur ; Mindaugas Dagys, Auteur ; Olivier Duriez, Auteur ; Klaus-Michael Exo, Auteur ; Wolfgang Fiedler, Auteur ; Andrea Flack, Auteur ; Guilad Friedemann, Auteur ; Johannes Fritz, Auteur ; Clara Garcia-Ripolles, Auteur ; Stefan Garthe, Auteur ; Dimitri Giunchi, Auteur ; Atanas Grozdanov, Auteur ; Roi Harel, Auteur ; Elizabeth M. Humphreys, Auteur ; Rene Janssen, Auteur ; Andrea Kolzsch, Auteur ; Olga Kulikova, Auteur ; Thomas K. Lameris, Auteur ; Pascual López-López, Auteur ; Elizabeth A. Masden, Auteur ; Flavio Monti, Auteur ; Ran Nathan, Auteur ; Stoyan Nikolov, Auteur ; Steffen Oppel, Auteur ; Hristo Peshev, Auteur ; Louis Phipps, Auteur ; Ivan Pokrovsky, Auteur ; Viola H. Ross-Smith, Auteur ; Victoria Saravia, Auteur ; Emily S. Scragg, Auteur ; Andrea Sforzi, Auteur ; Emilian Stoynov, Auteur ; Chris Thaxter, Auteur ; Wouter Van Steelant, Auteur ; Mariëlle van Toor, Auteur ; Bernd Vorneweg, Auteur ; Jonas Waldenström, Auteur ; Martin Wikelski, Auteur ; Ramunas Zydelis, Auteur ; Aldina M. A. Franco, AuteurWind turbines and power lines can cause bird mortality due to collision or electrocution. The biodiversity impacts of energy infrastructure (EI) can be minimised through effective landscape-scale planning and mitigation. The identification of hi[...]
Article
Rahel M. Borrmann, Auteur ; Richard A. Phillips, Auteur ; Thomas A. Clay, Auteur ; Stefan Garthe, AuteurResearch into the patterns and drivers of juvenile migration is important for understanding the development of individual migration strategies. Although several recent studies have tracked adult large gulls throughout the annual cycle, the movem[...]
Article
Philipp Schwemmer, Auteur ; Leonie Enners, Auteur ; Stefan Garthe, AuteurThe Wadden Sea is an important resting site on the East Atlantic Flyway for Eurasian Curlews (Numenius arquata). However, there is currently little information regarding the connectivity between breeding, staging, and over-wintering sites. We eq[...]
Article
Stefan Garthe, Auteur ; Henriette Schwemmer, Auteur ; Nele Markones, Auteur ; Sabine Müller, Auteur ; Philipp Schwemmer, AuteurOne of the most important wintering sites for Red-throated Divers Gavia stellata is the offshore zone of the German North Sea. The implementation of the EU Birds Directive in German offshore waters requires special protection of divers that comp[...]
Article
Philipp Schwemmer, Auteur ; Franziska Guepner, Auteur ; Nils Guse, Auteur ; Stefan Garthe, AuteurSound knowledge on the food choice of seabirds and coastal birds essentially contributes to the understanding of marine food webs. In the present study stomach contents of beached coastal birds from the German North Sea coast were analysed. The [...]
Article
Robert W. Furness, Auteur ; Gunnar T. Hallgrimsson, Auteur ; William A. Montevecchi, Auteur ; David Fifield, Auteur ; Ulrike Kubetzki, Auteur ; Bettina Mendel, Auteur ; Stefan Garthe, AuteurThe Gannet Morus bassanus is one of the seabirds considered most at risk from collision mortality at offshore wind farms in UK waters, so a better understanding of migration routes informs assessments of risk for different populations. Deploymen[...]
Article
Klaus-Michael Exo, Auteur ; Ommo Hüppop, Auteur ; Stefan Garthe, Auteur
Article
Philipp Schwemmer, Auteur ; Christian C. Voigt, Auteur ; Anna-Marie Corman, Auteur ; Sven Adler, Auteur ; Stefan Garthe, AuteurBirds may change their diet and foraging habitat during or after migration. Dunlins Calidris alpina alpina breed in the tundra of northern Europe and Russia where they feed exclusively on terrestrial prey. However, up to 80% of the flyway popula[...]
Article
Stefan Garthe, Auteur ; Bernd-Olaf Flore, Auteur ; Bernd Haelterlein, Auteur ; Ommo Hueppop, Auteur ; Ulrike Kubetzki, Auteur ; Peter Suedbeck, AuteurBased on published literature and unpublished data for the second half of the 20th century, the population development of all gull species breeding at the German North Sea coast is described and analysed. Breeding populations of all gull species[...]
Article
Ramunas Zydelis, Auteur ; Jochen Bellebaum, Auteur ; Henrik Osterblom, Auteur ; Markus Vetemaa, Auteur ; Bernd Schirmeister, Auteur ; Antra Stipniece, Auteur ; Mindaugas Dagys, Auteur ; Mennobart van Eerden, Auteur ; Stefan Garthe, AuteurBird mortality in fishing gear is a global conservation issue and it is recognised that bycatch in industrial longline and trawl fisheries threatens several seabird species. Little is known however about the effects of bycatch in small-scale gil[...]
Article
Johan Ekroos, Auteur ; Anthony D. Fox, Auteur ; Thomas K. Christensen, Auteur ; Ib K. Petersen, Auteur ; Mikael Kilpi, Auteur ; Jón E. Jónsson, Auteur ; Martin Green, Auteur ; Karsten Laursen, Auteur ; Anja Cervencl, Auteur ; Peter de Boer, Auteur ; Leif Nilsson, Auteur ; Wlodzimierz Meissner, Auteur ; Stefan Garthe, Auteur ; Markus Ost, AuteurWe report on the status of the Baltic/Wadden Sea flyway Eider population based on trends in breeding and wintering numbers throughout the region, supplemented by changes in the sex ratio and proportion of young Eiders as monitored in the Danish [...]
Article
Katrin Ludynia, Auteur ; Stefan Garthe, Auteur ; Guillermo Luna-Jorquera, AuteurThe Peruvian Booby (Sula variegata) is one of the most numerous guano bird species in the Humboldt Current. We used a combination of data logger deployment, at-sea observations and colony-based work to investigate the foraging and diving behavio[...]
Article
Nicole Sonntag, Auteur ; Bettina Mendel, Auteur ; Stefan Garthe, AuteurThe German Baltic Sea is a very important area for seabirds and waterbirds. 38 species are regularly found in coastal or offshore waters. Many of them occur in international important concentrations and are subject to various conservation-relate[...]
Article
Stefan Garthe, Auteur ; Nicole Sonntag, Auteur ; Philipp Schwemmer, Auteur ; Volker Dierschke, AuteurIncreasing plans for economic activities at sea have recently led to intensive studies of seabird IV distribution and seabird numbers. However, there are still some temporal gaps concerning seabird numbers, and important up-to-date information i[...]
Article
Stefan Garthe, Auteur ; Nicole Sonntag, Auteur ; Philipp Schwemmer, Auteur ; Volker Dierschke, AuteurIncreasing plans for economic activities at sea have recently led to intensive studies of seabird IV distribution and seabird numbers. However, there are still some temporal gaps concerning seabird numbers, and important up-to-date information i[...]
Article
Jana Kotzerka, Auteur ; Stefan Garthe, Auteur ; Scott A. Hatch, AuteurThe Black-legged Kittiwake Rissa tridactyla is the most abundant gull species in the world, but some populations have declined in recent years, apparently due to food shortage. Kittiwakes are surface feeders and thus can compensate for low food [...]
Article
Volker Dierschke, Auteur ; Stefan Garthe, Auteur ; Nele Markones, AuteurOwing to the long distances to the nearest seabird colonies in Britain and Norway, the home ranges of seabirds breeding on Helgoland (southeastern North Sea) can be investigated by transect counts at sea. According to ship-based counts from the [...]
Article
Volker Dierschke, Auteur ; Stefan Garthe, Auteur ; Nele Markones, AuteurOwing to the long distances to the nearest seabird colonies in Britain and Norway, the home ranges of seabirds breeding on Helgoland (southeastern North Sea) can be investigated by transect counts at sea. According to ship-based counts from the [...]
Article
Kees Camphuysen, Auteur ; Judy Shamoun-Baranes, Auteur ; Willem Bouten, Auteur ; Stefan Garthe, AuteurThe identification of marine areas of importance for seabirds is a challenge, because it is often unclear how birds are using the different areas in which they occur. Species differ in habitat choice, foraging behaviour and feeding range, but al[...]
Article
Julia Sommerfeld, Auteur ; Akiko Kato, Auteur ; Yan Ropert-Coudert, Auteur ; Stefan Garthe, Auteur ; Mark A. Hindell, AuteurUnderstanding how animals allocate their foraging time is a central question in behavioural ecology. Intrinsic factors, such as body mass and size differences between sexes or species, influence animals' foraging behaviour, but studies investiga[...]
Article
Alexander Mitschke, Auteur ; Stefan Garthe, Auteur ; Ronald Mulsow, AuteurStudies of the long-term population development of common breeding birds in the urban environment are scarce. We studied 15 census plots in the city of Hamburg in the 1990s, all of which had been investigated for the first time in the 1960s or 1[...]
Article
Jochen Bellebaum, Auteur ; Christoph Bock, Auteur ; Stefan Garthe, Auteur ; Jan Kube, Auteur ; Marco Schilz, Auteur ; Nicole Sonntag, AuteurStandardised seabird surveys from ships and systematic counts of migrating birds in the German Baltic Sea from 2002 to 2008 revealed a regular occurrence of White-billed Divers mainly on spring migration (March to May). Migration intensity was 0[...]
