Essays about: "födovävar"
Found 2 essays containing the word födovävar.
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1. Change in uptake and transfer of zinc in the food chain when predatory fish disappear from the system
University essay from Uppsala universitet/Institutionen för geovetenskaperAbstract : There is a widespread distribution of possibly toxic heavy metals, such as zinc, in aquatic ecosystems. Simultaneously aquatic food webs are changing due to declining predatory fish stocks. 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