Détail de l'auteur
Auteur Håkan Karlsson |
Documents disponibles écrits par cet auteur (3)
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Article
Thomas Alerstam, Auteur ; Jason W. Chapman, Auteur ; Johan Bäckman, Auteur ; Alan D. Smith, Auteur ; Håkan Karlsson, Auteur ; Cecilia Nilsson, Auteur ; Don R. Reynolds, Auteur ; Raymond H. G. Klaassen, Auteur ; Jane K. Hill, AuteurVast numbers of insects and passerines achieve long-distance migrations between summer and winter locations by undertaking high-altitude nocturnal flights. Insects such as noctuid moths fly relatively slowly in relation to the surrounding air, w[...]![]()
Article
Sara S. Henningsson, Auteur ; Håkan Karlsson, AuteurMany northerly breeding shorebird species show a separation in timing of adult and juvenile migration. If, in addition to genetic control of migration, learning from experienced conspecifics is advantageous, juveniles should join adult birds dur[...]![]()
Article
Håkan Karlsson, Auteur ; Cecilia Nilsson, Auteur ; Johan Bäckman, Auteur ; Thomas Alerstam, AuteurNocturnal passerine migrants could substantially reduce the amount of energy spent per distance covered if they fly with tailwind assistance and thus achieve ground speeds that exceed their airspeeds (the birds' speed in relation to the surround[...]



