Search for dissertations about: "Flyttfåglar"
Showing result 1 - 5 of 14 swedish dissertations containing the word Flyttfåglar.
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1. Moult strategies in relation to migration in long-distance migrants
Abstract : .... READ MORE
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2. Fuel and fly: adaptations to endurance exercise in migrating birds
Abstract : Birds on migration alternate between consuming fuel stores during flights and accumulating fuel stores during stopovers. This thesis highlights some of the ways in which migrating birds have adapted to the different demands of fuelling and flight. Most of the time on migration is spent at stopover sites accumulating fuel stores. READ MORE
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3. Epidemiological and Bacteriological Aspects of Spotted Fever Rickettsioses in Humans, Vectors and Mammals in Sweden
Abstract : Rickettsiae are obligate intracellular gram-negative bacteria transmitted by arthropod vectors. Rickettsiae sometimes cause disease in humans, typically with high fever, headache and occasionally an eschar.In Sweden, Rickettsia helvetica, belonging to the spotted fever group, is the only tick-transmitted rickettsia found free in nature. READ MORE
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4. Movement ecology of aerial insectivorous birds : Individual-based studies on swifts and nightjars
Abstract : 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. READ MORE
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5. 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