Search for dissertations about: "ontogenetic diet shifts"
Found 4 swedish dissertations containing the words ontogenetic diet shifts.
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1. Ontogenetic scaling and the development of within-cohort size structure
Abstract : It is increasingly recognized that individuals of the same species differ from each other and influence and respond to their environment in unique ways. This thesis deals with size variation among individuals that not only are of the same species but also of similar age. READ MORE
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2. Bottom-up and top-down regulation of heterogeneous lake food webs
Abstract : Food webs are networks of organisms linked by trophic interactions that regulate the responses of ecosystems to environmental change. Such regulation is a result of the effects of resources on the abundance of their consumers (i.e. bottom-up effects) and/or the influence of consumers on the abundance of their resources (i. READ MORE
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3. The role of young-of-the-year fish in lake ecosystems
Abstract : Food chain theory is based on consumption; that is, presupposing that the only important interaction between organisms is that they actually meet in an unstructured environment and that one of them is consumed. Recently, studies, including biomanipulation projects, have indicated that trophic interactions are more complex than predicted by food chain theory. READ MORE
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4. Baltic cod predation: mechanisms, impact on prey, implications for fisheries
Abstract : Trophic interactions are fundamental in the functioning of ecosystems. Predator-prey interactions between cod (Gadus morhua), herring (Clupea harengus) and sprat (Sprattus sprattus) in the Baltic Sea are typical examples of strong trophic interactions with consequences on the structure of this ecosystem. READ MORE