Sökning: "stopover site"

Hittade 4 uppsatser innehållade orden stopover site.

  1. 1. Comparing Resource Abundance And Intake At The Reda And Wisla River Estuaries

    Master-uppsats, Linköpings universitet/Statistik och maskininlärning

    Författare :Saman Zahid; [2021]
    Nyckelord :Reda and Wisla river estuaries; resource abundance; change in mass; multiple linear regression; generalized additive model; linear mixed effect model; Expectation-maximization; AIC;

    Sammanfattning : The migratory birds stop at different stopover sites during migration. The presence of resources in these stopover sites is essential to regain the energy of these birds. This thesis aims to compare the resource abundance and intake at the two stopover sites: Reda and Wisla river estuaries. LÄS MER

  3. 2. Status, trends and values of wintering and migrating birds in Gialova lagoon, Messenia, Greece

    Master-uppsats, Stockholms universitet/Institutionen för naturgeografi

    Författare :Viggo Norrby; [2017]
    Nyckelord :Wetlands; waterbirds; bird migration; greece; inventory; monitoring;

    Sammanfattning : Areas of wetland have for the last century declined globally, mostly as a cause of anthropogenic activitities. Since many bird species are depending on wetlands, this have affected their populations negatively, and today many of the remaining wetlands are protected. LÄS MER

  4. 3. Site fidelity of a migratory species towards its annual range

    Master-uppsats, SLU/Dept. of Wildlife, Fish and Environmental Studies

    Författare :Peter Lojander; [2013]
    Nyckelord :calving; rutting; stopover site; migration; habitat selection; moose Alces alces ; ungulates; Sweden;

    Sammanfattning : Site fidelity, the behaviour of animals to return to areas where they have been before is a common trait in many species. The Scandinavian moose is known to show fidelity to its range, but to what extent, is little known. LÄS MER

  5. 4. Stopover duration and field site selection by whooper swan (Cygnus cygnus) at Lake Tysslingen, Sweden

    Magister-uppsats, SLU/Dept. of Ecology

    Författare :Louise Hämäläinen; [2010]
    Nyckelord :whooper swan; Cygnus cygnus; agricultural land; foraging; crop; stopover; migration; field selection; feeding;

    Sammanfattning : The aim of this study was to increase the knowledge about whooper swan (Cygnus cygnus) ecology to enhance the ability to predict and also to prevent the crop damage they cause. The largest proportion of damage in Sweden has been reported at stopover sites during spring migration in February, March and April. LÄS MER