Search for dissertations about: "migration routes"
Showing result 1 - 5 of 29 swedish dissertations containing the words migration routes.
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1. Gendered routes and courses : The socio-spatial mobility of migrants in nineteenth-century Sundsvall, Sweden
Abstract : This dissertation examines migrants during a time of large-scale socio-economic transformations. These changes were particularly evident in the nineteenth-century town of Sundsvall, Sweden, to which thousands of men and women moved. READ MORE
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2. Migratory routes and stopover behaviour in avian migration
Abstract : Migratory birds, some small and light weight as matchboxes, engage in seasonal inter-continental journeys in order to take advantage of the long summer days and abundance of food at northern latitudes to breed and raise their young, and then escape the harsh winters by migrating to lower latitudes. This thesis deals with two important aspects of migration, the routes taken during migration and the birds’ behaviour at stopovers. READ MORE
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3. Individual consistency in bird migration
Abstract : Slight differences, which appear in the individual animals of the same species and population have been recognised and appreciated ever since Darwin. These consistent intra-specific differences in animals have been considered very important because they are often inherited, and thus, provide the basic material for evolution to act on. READ MORE
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4. On the role of migration for the distribution of arctic birds - a circumpolar perspective
Abstract : Flexibility as well as constraints to the evolution of migration routes has the possibility of affecting large-scale patterns of geographical ranges of animals both by facilitating, but sometimes restricting, accessibility to and colonization of new regions. This dissertation concerns the broad-scale effects migration has on the distributional patterns of birds in the Arctic. READ MORE
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5. Adaptive flexibility in migratory behaviour of shorebirds
Abstract : The phenomenon of bird migration has long fascinated us humans and it has prompted questions like where do they go or come from and how do they find their way? Arctic shorebirds are well known for their spectacular long-distance migrations with some species travelling more than 10 000 km every spring and autumn, and some even cover this distance in one single nonstop flight. The aim of my thesis was to investigate the flexibility of Arctic shorebirds when it comes to orientation behaviour, departure behaviour and migration strategy. READ MORE
