Sökning: "loop migration"
Visar resultat 1 - 5 av 30 avhandlingar innehållade orden loop migration.
1. Migration strategies of raptors – spatio-temporal adaptations and constraints in travelling and foraging
Sammanfattning : My dissertation is about bird migration and addresses questions about how raptors adapt to the fluctuating environments during the transition seasons between breeding and wintering. The migration is highly affected by local prey abundance, foraging strategies, weather conditions and landscape patterns along the migration routes as well as navigation and orientation mechanisms and cues. LÄS MER
2. Migratory routes and stopover behaviour in avian migration
Sammanfattning : 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. LÄS MER
3. Reuse and Recycling of Food Packaging - Odour Related Aspects of the Use and Misuse of PET Beverage Bottles
Sammanfattning : The reuse and closed-loop recycling of food packaging was studied in order to assess consumer safety and the sensory quality (e.g. taste and smell) of packaged food. LÄS MER
4. Inhibition of WNT5A Signaling and Function in Malignant Melanoma
Sammanfattning : The life-threatening disease of malignant melanoma is one of the fastest growing forms of cancer, affecting an estimated number of 200,000 patients worldwide every year. Although highly curable if detected early, once the melanoma has metastasized there are few treatment options and a median survival rate of only 6-9 months. LÄS MER
5. Movement ecology of aerial insectivorous birds : Individual-based studies on swifts and nightjars
Sammanfattning : Many birds are predisposed to annually undertake movements over large temporal and spatial scales. They have an efficient flight machinery, demonstrate impressive capacities in storing and burning fuel, and they exhibit necessary orientation and navigational skills. LÄS MER
