Essays about: "trofiska interaktioner"
Found 4 essays containing the words trofiska interaktioner.
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1. Behavioural effects on Lymnaea stagnalis following sublethal exposure to the antidepressant fluoxetine
University essay from Lunds universitet/Miljövetenskaplig utbildningAbstract : The use of selective serotonin reuptake inhibitors (SSRI), a group of antidepressants, increases globally resulting in higher concentrations also in wastewater recipients. These concentrations may cause altered behaviour of aquatic organisms and have effects on whole ecosystem level. READ MORE
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2. Importance of fish community structure, nutrients and browning for shallow lake ecosystem dynamics : A modelling perspective
University essay from Uppsala universitet/Institutionen för biologisk grundutbildningAbstract : In a changing climate, it is increasingly important to be able to model environmental effects on food webs, and to do that, one must have appropriate dynamic models. I present a shallow lake ecosystem model where producers, grazers, carnivores, piscivores, and detritivores are coupled through resource (light, nutrients and detritus) fluxes between the benthic and pelagic habitats and through carnivore life history events (ontogenetic habitat and diet shifts). READ MORE
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3. The influence of northern pike on the diet of Eurasian perch
University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskapAbstract : Top predators in aquatic ecosystems often have strong top-down effects on the ecosystem. Northern pike (Esox lucius) has been documented to cause whitefish (Coregonus lavaretus) populations to diverge into different ecomorphs. READ MORE
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4. Biotiska faktorers inverkan på markstrukturen
University essay from SLU/Dept. of Soil and EnvironmentAbstract : Soil structure is a key factor in the functioning of soil, including its ability to support root growth. Soil structure influences the circulation of nutrients and affects the gas exchange, and acts as habitat for the soil organisms. READ MORE