Search for dissertations about: "Migration"

Showing result 11 - 15 of 1903 swedish dissertations containing the word Migration.

  2. 11. Ecology and evolution of large-scale bird migration patterns : A natural history and comparative study of the migration in common and little ringed plovers

    Author : Linus Hedh; Evolutionär ekologi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; ringed plover; leap-frog migration; migration speed; migration process; light level geolocator; migration;

    Abstract : Migration distance and seasonal redistribution patterns may vary between and within bird populations. A common pattern is leap-frog migration, in which northerly breeding populations migrate farther and winter south of more southerly breeding populations. READ MORE

  4. 12. Barnfamiljers migration : familjers relationer i en förändrad livssituation = [Migration of families with children] : [family relations in a changed life situation]

    Author : Eva Nyberg; Stockholms universitet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Barnfamiljer; Emigration; Immigration; Invandrarbarn-- Sverige;

    Abstract : .... READ MORE

  5. 13. Moving again : Studies of international return and onward migration

    Author : Andrea Monti; Eleonora Mussino; Karen Haandrikman; Hill Kulu; Stockholms universitet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Repeat migration; re-migration; return migration; onward migration; register data; survey data; Sweden; Romania; Senegal; sociologisk demografi; Sociological Demography;

    Abstract : Contemporary international migration is characterized by increasingly complex migration patterns, with high shares of re-migration, i.e., return and onward migration after an initial move. READ MORE

  6. 14. Migration to Shashemene : ethnicity, gender and occupation in urban Ethiopia

    Author : Gunilla Bjerén; Stockholms universitet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Migration; Städer; Migration; Etiopien; Etnicitet; Arbetsmarknad; Levnadsförhållanden; SOCIAL SCIENCES;

    Abstract : .... READ MORE

  7. 15. Flight Behaviour of Passerines on Nocturnal Migration

    Author : Cecilia Nilsson; Evolutionär ekologi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Bird migration; Passerines; Flight Behaviour; Tracking radar; Optimal migration; Flight speed; Airspeed; Wind drift; Nocturnal migration; Coastline effects; Flight directions; Reverse migration;

    Abstract : Many passerines migrate during the night and at high altitudes, making their migration difficult to observe. By using tracking radars we have been able to make exact observations of the flight behaviour of passerines on nocturnal migration, which has enabled us to test several hypotheses about adaptive values and constraints regarding migratory behaviour in different ecological contexts. READ MORE