Search for dissertations about: "ducklings"
Found 5 swedish dissertations containing the word ducklings.
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1. Survival patterns and density-dependent processes in breeding mallards Anas platyrhynchos
Abstract : Measuring and assessing vital rates such as births and deaths are prerequisites for understanding population dynamics. Vital rates may be affected by the density of individuals, even though the importance of density dependence on population dynamics has been debated for a long time. READ MORE
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2. The influence of food abundance patterns and predation on breeding ducks with a special emphasis on the interactions between ducklings and fish
Abstract : Ducks breeding in Fennoscandia represent a large part of the total population in Europe, and variations in reproductive success can affect continental population trajectories. It is therefore essential to understand processes affecting breeding success. READ MORE
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3. Survival patterns and density-dependent processes in breeding mallards Anas platyrhynchos
Abstract : Measuring and assessing vital rates such as births and deaths are prerequisites for understanding population dynamics. Vital rates may be affected by the density of individuals, even though the importance of density dependence on population dynamics has been debated for a long time. READ MORE
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4. Large-scale releases of native species : the mallard as a predictive model system
Abstract : Human alteration of natural systems, and its consequences are of great concern and the impact on global ecosystems is one of the biggest threats that biodiversity stands before. Translocations of invasive species, as well as intraspecific contingents with non-native genotypes, whether they are deliberate or unintentional, are one such alteration and its consequences are continuously being assessed. READ MORE
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5. Large-scale releases of native species: the mallard as a predictive model system
Abstract : Human alteration of natural systems, and its consequences are of great concern and the impact on global ecosystems is one of the biggest threats that biodiversity stands before. Translocations of invasive species, as well as intraspecific contingents with non-native genotypes, whether they are deliberate or unintentional, are one such alteration and its consequences are continuously being assessed. READ MORE