Search for dissertations about: "predation risk"
Showing result 1 - 5 of 78 swedish dissertations containing the words predation risk.
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1. Predation and shorebirds: predation management, habitat effects and public opinions
Abstract : Many shorebird populations are rapidly declining and a high nest predation rate is one of the threats facing these populations. Thus, factors that affect predation and how to manage it in an effective way are receiving increased attention. READ MORE
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2. The development of resource polymorphism – Effects of diet, predation risk and population dynamical feedbacks
Abstract : This thesis deals with the evolution of individuals within a species adapted to utilize specific resources, i.e. resource polymorphism. Although a well-known phenomenon, the understanding of the mechanisms behind is not complete. READ MORE
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3. Behaviour under predation risk in birds
Abstract : Predation is a major selective force in the evolution of both morphological and behavioural characters in animals. The flexibility in behavioural traits according to perceived predation risk has received much attention in recent years. READ MORE
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4. Behaviour under predation risk - antipredator strategies, behavioural syndromes and sex-specific responses in aquatic prey
Abstract : In many natural ecosystems, predation is well recognized as a strong evolutionary force, and predator-mediated selection has been demonstrated to induce changes in prey morphology, life history and behaviour. In my thesis, I have focused on behavioural responses in aquatic prey under the risk of predation. READ MORE
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5. The importance of predation in benthic stream communities
Abstract : There has been considerable debate whether or not predators has any significant effects on prey densities in streams. This thesis examines the importance of predation in stream communities. I have conducted both field and laboratory studies where I have studied how both vertebrate and invertebrate predators affects benthic prey. READ MORE