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Article
Andrea Koelzsch, Auteur ; Silke Bauer, Auteur ; Rob de Boer, Auteur ; Larry Griffin, Auteur ; David Cabot, Auteur ; Klaus-Michael Exo, Auteur ; Henk P. van der Jeugd, Auteur ; Bart A. Nolet, AuteurHerbivorous birds are hypothesized to migrate in spring along a seasonal gradient of plant profitability towards their breeding grounds (green wave hypothesis). For Arctic breeding species in particular, following highly profitable food is impor[...]
Article
Christine Kowallik, Auteur ; Helmut Kruckenberg, Auteur ; Kees Koffijberg, Auteur ; Andrea Koelzsch, Auteur ; Johannes Borbach-Jaene, AuteurThe coastal marshes around the River Ems and the Dollard Bay in NW Germany are a core stopover site for migratory and wintering European Golden Plovers. Numbers, spatial distribution, phenology and habitat selection were studied in a 415 km(2) a[...]
Article
Andrea Koelzsch, Auteur ; Stein A. Saether, Auteur ; Henrik Gustafsson, Auteur ; Peder Fiske, Auteur ; Jacob Höglund, Auteur ; John Atle Kålås, Auteur1. During the last centuries, the breeding range of the great snipe Gallinago media has declined dramatically in the western part of its distribution. To examine present population dynamics in the Scandinavian mountains, we collected and analyse[...]
Article
Bart Nolet, Auteur ; Andrea Koelzsch, Auteur ; Kees Oosterbeek, Auteur ; Peter de Vries, AuteurIn the classical approach, counts are used to designate sites as important stopovers of migratory birds. Now that individual birds can be tracked on migration by high-tech means, we can also determine which sites are visited most often and/or fo[...]
